[v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.

Message ID 20230608062954.2513718-1-pan2.li@intel.com
State Dropped
Headers
Series [v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN. |

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Commit Message

Li, Pan2 via Gcc-patches June 8, 2023, 6:29 a.m. UTC
  From: Pan Li <pan2.li@intel.com>

This patch would like to refactor the requirement of both the ZVFH
and ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the
iterators of RVV. And then the ZVFH will leverage one function as
the gate for FP16 supported or not.

Please note the ZVFH will cover the ZVFHMIN instructions. This patch
add one test for this.

Signed-off-by: Pan Li <pan2.li@intel.com>
Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai>

gcc/ChangeLog:

	* config/riscv/riscv-protos.h (float_mode_supported_p):
	New function to float point is supported by extension.
	* config/riscv/riscv-v.cc (float_mode_supported_p):
	Ditto.
	* config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
	* config/riscv/vector.md: Add condition to FP define insn.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test
	for ZVFHMIN.
---
 gcc/config/riscv/riscv-protos.h               |   1 +
 gcc/config/riscv/riscv-v.cc                   |  12 ++
 gcc/config/riscv/vector-iterators.md          |  23 +--
 gcc/config/riscv/vector.md                    | 144 ++++++++++--------
 .../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
 5 files changed, 118 insertions(+), 77 deletions(-)
  

Comments

钟居哲 June 8, 2023, 6:34 a.m. UTC | #1
LGTM. Let's wait for Jeff and Robin. After this patch, we can start FP16 autovec.



juzhe.zhong@rivai.ai
 
From: pan2.li
Date: 2023-06-08 14:29
To: gcc-patches
CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li; yanzhang.wang; kito.cheng
Subject: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
From: Pan Li <pan2.li@intel.com>
 
This patch would like to refactor the requirement of both the ZVFH
and ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the
iterators of RVV. And then the ZVFH will leverage one function as
the gate for FP16 supported or not.
 
Please note the ZVFH will cover the ZVFHMIN instructions. This patch
add one test for this.
 
Signed-off-by: Pan Li <pan2.li@intel.com>
Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai>
 
gcc/ChangeLog:
 
* config/riscv/riscv-protos.h (float_mode_supported_p):
New function to float point is supported by extension.
* config/riscv/riscv-v.cc (float_mode_supported_p):
Ditto.
* config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
* config/riscv/vector.md: Add condition to FP define insn.
 
gcc/testsuite/ChangeLog:
 
* gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test
for ZVFHMIN.
---
gcc/config/riscv/riscv-protos.h               |   1 +
gcc/config/riscv/riscv-v.cc                   |  12 ++
gcc/config/riscv/vector-iterators.md          |  23 +--
gcc/config/riscv/vector.md                    | 144 ++++++++++--------
.../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
5 files changed, 118 insertions(+), 77 deletions(-)
 
diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
index ebbaac255f9..1f606f59ce1 100644
--- a/gcc/config/riscv/riscv-protos.h
+++ b/gcc/config/riscv/riscv-protos.h
@@ -177,6 +177,7 @@ rtx expand_builtin (unsigned int, tree, rtx);
bool check_builtin_call (location_t, vec<location_t>, unsigned int,
   tree, unsigned int, tree *);
bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
+bool float_mode_supported_p (machine_mode mode);
bool legitimize_move (rtx, rtx);
void emit_vlmax_vsetvl (machine_mode, rtx);
void emit_hard_vlmax_vsetvl (machine_mode, rtx);
diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
index 49752cd8899..fe4eb058ec0 100644
--- a/gcc/config/riscv/riscv-v.cc
+++ b/gcc/config/riscv/riscv-v.cc
@@ -418,6 +418,18 @@ const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
  && IN_RANGE (INTVAL (elt), minval, maxval));
}
+/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
+   float point machine mode.  */
+bool
+float_mode_supported_p (machine_mode mode)
+{
+  machine_mode inner_mode = GET_MODE_INNER (mode);
+
+  gcc_assert (FLOAT_MODE_P (inner_mode));
+
+  return inner_mode == HFmode ? TARGET_ZVFH : true;
+}
+
/* Return true if VEC is a constant in which every element is in the range
    [MINVAL, MAXVAL].  The elements do not need to have the same value.
diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
index f4946d84449..234b712bc9d 100644
--- a/gcc/config/riscv/vector-iterators.md
+++ b/gcc/config/riscv/vector-iterators.md
@@ -453,9 +453,8 @@ (define_mode_iterator V_WHOLE [
   (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
   (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
-  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
-  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
-  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
+  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")
+  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
   (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
   (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
   (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
@@ -477,7 +476,11 @@ (define_mode_iterator V_WHOLE [
(define_mode_iterator V_FRACT [
   (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
   (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") (VNx4HI "TARGET_MIN_VLEN >= 128")
-  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") (VNx4HF "TARGET_MIN_VLEN >= 128")
+
+  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
+  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
+  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
+
   (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
   (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
   (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
@@ -497,12 +500,12 @@ (define_mode_iterator VWEXTI [
])
(define_mode_iterator VWEXTF [
-  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
-  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
-  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
-  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
-  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
-  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
+  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
+  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
+  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
+  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
+  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
+  (VNx32SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
   (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
   (VNx2DF "TARGET_VECTOR_ELEN_FP_64")
diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
index 1d1847bd85a..2fe0233f102 100644
--- a/gcc/config/riscv/vector.md
+++ b/gcc/config/riscv/vector.md
@@ -1364,7 +1364,7 @@ (define_insn "*pred_broadcast<mode>"
  (vec_duplicate:VF
    (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
  (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vfmv.v.f\t%0,%3
    vfmv.v.f\t%0,%3
@@ -5685,7 +5685,7 @@ (define_insn "@pred_<optab><mode>"
    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
    (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5705,7 +5705,7 @@ (define_insn "@pred_<optab><mode>"
    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
    (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5728,7 +5728,7 @@ (define_insn "@pred_<optab><mode>_scalar"
      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5749,7 +5749,7 @@ (define_insn "@pred_<optab><mode>_scalar"
      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5772,7 +5772,7 @@ (define_insn "@pred_<optab><mode>_scalar"
    (vec_duplicate:VF
      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5795,7 +5795,7 @@ (define_insn "@pred_<optab><mode>_reverse_scalar"
      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfr<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5815,7 +5815,7 @@ (define_insn "@pred_<copysign><mode>"
    [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfsgnj<nx>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vfsgnj")
    (set_attr "mode" "<MODE>")])
@@ -5836,7 +5836,7 @@ (define_insn "@pred_<copysign><mode>_scalar"
     (vec_duplicate:VF
       (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfsgnj<nx>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfsgnj")
    (set_attr "mode" "<MODE>")])
@@ -5894,7 +5894,7 @@ (define_insn "*pred_<madd_msub><mode>"
      (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
    (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<madd_msub>.vv\t%0,%3,%4%p1
    vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
@@ -5927,7 +5927,7 @@ (define_insn "*pred_<macc_msac><mode>"
      (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
    (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<macc_msac>.vv\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
@@ -5960,7 +5960,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>"
      (match_operand:VF 3 "register_operand"     "   vr,   vr"))
    (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
  (match_operand:VF 5 "register_operand"         "    0,   vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[2], operands[5])
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
@@ -6021,7 +6021,7 @@ (define_insn "*pred_<madd_msub><mode>_scalar"
      (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
    (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
  (match_dup 3)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<madd_msub>.vf\t%0,%2,%4%p1
    vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
@@ -6055,7 +6055,7 @@ (define_insn "*pred_<macc_msac><mode>_scalar"
      (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
    (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<macc_msac>.vf\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
@@ -6089,7 +6089,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
      (match_operand:VF 3 "register_operand"      "   vr,  vr"))
    (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
  (match_operand:VF 5 "register_operand"          "    0,  vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
   "@
@@ -6154,7 +6154,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>"
        (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
    (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
    vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
@@ -6188,7 +6188,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>"
        (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
    (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
@@ -6222,7 +6222,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
        (match_operand:VF 3 "register_operand"     "   vr,   vr")))
    (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
  (match_operand:VF 5 "register_operand"         "    0,   vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[2], operands[5])
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
@@ -6285,7 +6285,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
        (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
    (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
  (match_dup 3)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
    vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
@@ -6320,7 +6320,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
        (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
    (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
@@ -6355,7 +6355,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
        (match_operand:VF 3 "register_operand"      "   vr,  vr")))
    (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
  (match_operand:VF 5 "register_operand"            "    0,  vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
   "@
@@ -6399,7 +6399,7 @@ (define_insn "@pred_<optab><mode>"
  (any_float_unop:VF
    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.v\t%0,%3%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")
@@ -6422,7 +6422,7 @@ (define_insn "@pred_<optab><mode>"
  (any_float_unop_nofrm:VF
    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.v\t%0,%3%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")
@@ -6445,7 +6445,7 @@ (define_insn "@pred_<misc_op><mode>"
  (unspec:VF
    [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<misc_op>.v\t%0,%3%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -6464,7 +6464,7 @@ (define_insn "@pred_class<mode>"
  (unspec:<VCONVERT>
    [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
  (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfclass.v\t%0,%3%p1"
   [(set_attr "type" "vfclass")
    (set_attr "mode" "<MODE>")])
@@ -6497,7 +6497,7 @@ (define_insn "@pred_dual_widen_<optab><mode>"
    (float_extend:VWEXTF
      (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6522,7 +6522,7 @@ (define_insn "@pred_dual_widen_<optab><mode>_scalar"
      (vec_duplicate:<V_DOUBLE_TRUNC>
(match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6545,7 +6545,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
    (float_extend:VWEXTF
      (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.wv\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6569,7 +6569,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
      (vec_duplicate:<V_DOUBLE_TRUNC>
(match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.wf\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6602,7 +6602,7 @@ (define_insn "@pred_widen_mul_<optab><mode>"
        (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
    (match_operand:VWEXTF 2 "register_operand"               "    0"))
  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<macc_msac>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6629,7 +6629,7 @@ (define_insn "@pred_widen_mul_<optab><mode>_scalar"
        (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
    (match_operand:VWEXTF 2 "register_operand"               "    0"))
  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<macc_msac>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6656,7 +6656,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>"
          (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
      (match_operand:VWEXTF 2 "register_operand"               "    0"))
  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6684,7 +6684,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
          (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
    (match_operand:VWEXTF 2 "register_operand"                 "    0"))
  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6728,7 +6728,8 @@ (define_insn "*pred_cmp<mode>"
     [(match_operand:VF 4 "register_operand"          "   vr,   vr")
      (match_operand:VF 5 "register_operand"          "   vr,   vr")])
  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
-  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vv\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6747,7 +6748,7 @@ (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
     [(match_operand:VF 3 "register_operand"           " vr")
      (match_operand:VF 4 "register_operand"           " vr")])
  (match_dup 1)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B2.vv\t%0,%3,%4,v0.t"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")
@@ -6771,7 +6772,8 @@ (define_insn "*pred_cmp<mode>_narrow"
     [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
      (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
-  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vv\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6809,7 +6811,7 @@ (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
      (vec_duplicate:VF
        (match_operand:<VEL> 4 "register_operand"     "  f"))])
  (match_dup 1)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B2.vf\t%0,%3,%4,v0.t"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")
@@ -6834,7 +6836,8 @@ (define_insn "*pred_cmp<mode>_scalar"
      (vec_duplicate:VF
        (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
-  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6855,7 +6858,8 @@ (define_insn "*pred_cmp<mode>_scalar_narrow"
      (vec_duplicate:VF
        (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
-  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6893,7 +6897,7 @@ (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
        (match_operand:<VEL> 4 "register_operand"     "  f"))
      (match_operand:VF 3 "register_operand"          " vr")])
  (match_dup 1)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B2.vf\t%0,%3,%4,v0.t"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")
@@ -6918,7 +6922,8 @@ (define_insn "*pred_eqne<mode>_scalar"
        (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
      (match_operand:VF 4 "register_operand"          "   vr,   vr")])
  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
-  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6939,7 +6944,8 @@ (define_insn "*pred_eqne<mode>_scalar_narrow"
        (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
      (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
-  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6966,7 +6972,7 @@ (define_insn "@pred_merge<mode>_scalar"
         (match_operand:VF 2 "register_operand"      " vr,vr")
(match_operand:<VM> 4 "register_operand"    " vm,vm"))
       (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfmerge.vfm\t%0,%2,%3,%4"
   [(set_attr "type" "vfmerge")
    (set_attr "mode" "<MODE>")])
@@ -6994,7 +7000,7 @@ (define_insn "@pred_fcvt_x<v_su>_f<mode>"
  (unspec:<VCONVERT>
     [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
  (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfcvt.x<v_su>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfcvtftoi")
    (set_attr "mode" "<MODE>")])
@@ -7013,7 +7019,7 @@ (define_insn "@pred_<fix_cvt><mode>"
  (any_fix:<VCONVERT>
     (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
  (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfcvtftoi")
    (set_attr "mode" "<MODE>")])
@@ -7034,7 +7040,7 @@ (define_insn "@pred_<float_cvt><mode>"
  (any_float:VF
     (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
  (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfcvt.f.x<u>.v\t%0,%3%p1"
   [(set_attr "type" "vfcvtitof")
    (set_attr "mode" "<MODE>")])
@@ -7062,7 +7068,7 @@ (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
  (unspec:VWCONVERTI
     [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
  (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7081,7 +7087,7 @@ (define_insn "@pred_widen_<fix_cvt><mode>"
  (any_fix:VWCONVERTI
     (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
  (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7100,7 +7106,7 @@ (define_insn "@pred_widen_<float_cvt><mode>"
  (any_float:VF
     (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
  (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwcvt.f.x<u>.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtitof")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7119,7 +7125,7 @@ (define_insn "@pred_extend<mode>"
  (float_extend:VWEXTF
     (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
  (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwcvt.f.f.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtftof")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -7147,7 +7153,7 @@ (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
  (unspec:<VNCONVERT>
     [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
  (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfncvt.x<v_su>.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7166,7 +7172,7 @@ (define_insn "@pred_narrow_<fix_cvt><mode>"
  (any_fix:<VNCONVERT>
     (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
  (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7187,7 +7193,7 @@ (define_insn "@pred_narrow_<float_cvt><mode>"
  (any_float:<VNCONVERT>
     (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
  (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfncvt.f.x<u>.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtitof")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7208,7 +7214,7 @@ (define_insn "@pred_trunc<mode>"
  (float_truncate:<V_DOUBLE_TRUNC>
     (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
  (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfncvt.f.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftof")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -7228,7 +7234,7 @@ (define_insn "@pred_rod_trunc<mode>"
    [(float_truncate:<V_DOUBLE_TRUNC>
       (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
  (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfncvt.rod.f.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftof")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -7389,7 +7395,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
         (parallel [(const_int 0)])))
     (match_operand:VF 3 "register_operand"           "   vr,   vr"))
   (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
+  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<reduc>.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfredu")
    (set_attr "mode" "<MODE>")])
@@ -7413,7 +7420,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
         (parallel [(const_int 0)])))
     (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
   (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<reduc>.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfredu")
    (set_attr "mode" "<MODE>")])
@@ -7437,7 +7445,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
         (parallel [(const_int 0)])))
     (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
   (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<reduc>.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfredu")
    (set_attr "mode" "<MODE>")])
@@ -7462,7 +7471,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
           (parallel [(const_int 0)])))
       (match_operand:VF 3 "register_operand"           "   vr,   vr"))
     (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
+  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7487,7 +7497,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
           (parallel [(const_int 0)])))
       (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
     (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7512,7 +7523,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
           (parallel [(const_int 0)])))
       (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
     (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7533,7 +7545,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
     (match_operand:VWF 3 "register_operand"             "   vr,   vr")
     (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
     (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
+  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfwred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7554,7 +7567,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
     (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
     (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
     (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfwred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7657,7 +7671,7 @@ (define_insn "*pred_extract_first<mode>"
     (match_operand:VF 1 "register_operand" "vr")
     (parallel [(const_int 0)]))
   (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfmv.f.s\t%0,%1"
   [(set_attr "type" "vfmovvf")
    (set_attr "mode" "<MODE>")])
@@ -7778,7 +7792,7 @@ (define_insn "@pred_slide<ud><mode>"
   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
   (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
   (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfslide<ud>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfslide<ud>")
    (set_attr "mode" "<MODE>")])
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
index 0923b6bc4d2..f1a29b639e0 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
@@ -3,6 +3,8 @@
#include "riscv_vector.h"
+typedef _Float16 float16_t;
+
vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
   return __riscv_vfncvt_f_f_w_f16mf4(src, vl);
}
@@ -43,11 +45,20 @@ vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
   return __riscv_vfwcvt_f_f_v_f32m8(src, vl);
}
-/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
+vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
+  return __riscv_vle16_v_f16mf4(base, vl);
+}
+
+vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
+  return __riscv_vle16_v_f16m8(base, vl);
+}
+
+/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } */
/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
+/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
/* { dg-final { scan-assembler-times {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
/* { dg-final { scan-assembler-times {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
-
+/* { dg-final { scan-assembler-times {vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */
-- 
2.34.1
  
Kito Cheng June 8, 2023, 7:58 a.m. UTC | #2
I am thinking, is it possible to use mode attr to remove the overhead
of checking the mode for other FP modes other than FP16?

e.g.
(define_mode_attr TARGET_FP_FULL_OPERATION_CHECKING [
  (VNx1HF "TARGET_ZVFH")
...
  (VNx1SF "1")
...
])


  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
->
  "TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>"


On Thu, Jun 8, 2023 at 2:35 PM juzhe.zhong@rivai.ai
<juzhe.zhong@rivai.ai> wrote:
>
> LGTM. Let's wait for Jeff and Robin. After this patch, we can start FP16 autovec.
>
>
>
> juzhe.zhong@rivai.ai
>
> From: pan2.li
> Date: 2023-06-08 14:29
> To: gcc-patches
> CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li; yanzhang.wang; kito.cheng
> Subject: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
> From: Pan Li <pan2.li@intel.com>
>
> This patch would like to refactor the requirement of both the ZVFH
> and ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the
> iterators of RVV. And then the ZVFH will leverage one function as
> the gate for FP16 supported or not.
>
> Please note the ZVFH will cover the ZVFHMIN instructions. This patch
> add one test for this.
>
> Signed-off-by: Pan Li <pan2.li@intel.com>
> Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai>
>
> gcc/ChangeLog:
>
> * config/riscv/riscv-protos.h (float_mode_supported_p):
> New function to float point is supported by extension.
> * config/riscv/riscv-v.cc (float_mode_supported_p):
> Ditto.
> * config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
> * config/riscv/vector.md: Add condition to FP define insn.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test
> for ZVFHMIN.
> ---
> gcc/config/riscv/riscv-protos.h               |   1 +
> gcc/config/riscv/riscv-v.cc                   |  12 ++
> gcc/config/riscv/vector-iterators.md          |  23 +--
> gcc/config/riscv/vector.md                    | 144 ++++++++++--------
> .../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
> 5 files changed, 118 insertions(+), 77 deletions(-)
>
> diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
> index ebbaac255f9..1f606f59ce1 100644
> --- a/gcc/config/riscv/riscv-protos.h
> +++ b/gcc/config/riscv/riscv-protos.h
> @@ -177,6 +177,7 @@ rtx expand_builtin (unsigned int, tree, rtx);
> bool check_builtin_call (location_t, vec<location_t>, unsigned int,
>    tree, unsigned int, tree *);
> bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
> +bool float_mode_supported_p (machine_mode mode);
> bool legitimize_move (rtx, rtx);
> void emit_vlmax_vsetvl (machine_mode, rtx);
> void emit_hard_vlmax_vsetvl (machine_mode, rtx);
> diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
> index 49752cd8899..fe4eb058ec0 100644
> --- a/gcc/config/riscv/riscv-v.cc
> +++ b/gcc/config/riscv/riscv-v.cc
> @@ -418,6 +418,18 @@ const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
>   && IN_RANGE (INTVAL (elt), minval, maxval));
> }
> +/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
> +   float point machine mode.  */
> +bool
> +float_mode_supported_p (machine_mode mode)
> +{
> +  machine_mode inner_mode = GET_MODE_INNER (mode);
> +
> +  gcc_assert (FLOAT_MODE_P (inner_mode));
> +
> +  return inner_mode == HFmode ? TARGET_ZVFH : true;
> +}
> +
> /* Return true if VEC is a constant in which every element is in the range
>     [MINVAL, MAXVAL].  The elements do not need to have the same value.
> diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
> index f4946d84449..234b712bc9d 100644
> --- a/gcc/config/riscv/vector-iterators.md
> +++ b/gcc/config/riscv/vector-iterators.md
> @@ -453,9 +453,8 @@ (define_mode_iterator V_WHOLE [
>    (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
>    (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> -  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
> -  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
>    (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> @@ -477,7 +476,11 @@ (define_mode_iterator V_WHOLE [
> (define_mode_iterator V_FRACT [
>    (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
>    (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") (VNx4HI "TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") (VNx4HF "TARGET_MIN_VLEN >= 128")
> +
> +  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
> +
>    (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
>    (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
>    (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> @@ -497,12 +500,12 @@ (define_mode_iterator VWEXTI [
> ])
> (define_mode_iterator VWEXTF [
> -  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> -  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> -  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> +  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> +  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> +  (VNx32SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
>    (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
>    (VNx2DF "TARGET_VECTOR_ELEN_FP_64")
> diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
> index 1d1847bd85a..2fe0233f102 100644
> --- a/gcc/config/riscv/vector.md
> +++ b/gcc/config/riscv/vector.md
> @@ -1364,7 +1364,7 @@ (define_insn "*pred_broadcast<mode>"
>   (vec_duplicate:VF
>     (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
>   (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vfmv.v.f\t%0,%3
>     vfmv.v.f\t%0,%3
> @@ -5685,7 +5685,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5705,7 +5705,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5728,7 +5728,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5749,7 +5749,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5772,7 +5772,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>     (vec_duplicate:VF
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5795,7 +5795,7 @@ (define_insn "@pred_<optab><mode>_reverse_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfr<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5815,7 +5815,7 @@ (define_insn "@pred_<copysign><mode>"
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>      (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5836,7 +5836,7 @@ (define_insn "@pred_<copysign><mode>_scalar"
>      (vec_duplicate:VF
>        (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5894,7 +5894,7 @@ (define_insn "*pred_<madd_msub><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
> @@ -5927,7 +5927,7 @@ (define_insn "*pred_<macc_msac><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
> @@ -5960,7 +5960,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>"
>       (match_operand:VF 3 "register_operand"     "   vr,   vr"))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6021,7 +6021,7 @@ (define_insn "*pred_<madd_msub><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
>     (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
> @@ -6055,7 +6055,7 @@ (define_insn "*pred_<macc_msac><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
>     (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
> @@ -6089,7 +6089,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "   vr,  vr"))
>     (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"          "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6154,7 +6154,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
> @@ -6188,7 +6188,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
> @@ -6222,7 +6222,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
>         (match_operand:VF 3 "register_operand"     "   vr,   vr")))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6285,7 +6285,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
>     (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
> @@ -6320,7 +6320,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
> @@ -6355,7 +6355,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "   vr,  vr")))
>     (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"            "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6399,7 +6399,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6422,7 +6422,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop_nofrm:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6445,7 +6445,7 @@ (define_insn "@pred_<misc_op><mode>"
>   (unspec:VF
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<misc_op>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -6464,7 +6464,7 @@ (define_insn "@pred_class<mode>"
>   (unspec:<VCONVERT>
>     [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfclass.v\t%0,%3%p1"
>    [(set_attr "type" "vfclass")
>     (set_attr "mode" "<MODE>")])
> @@ -6497,7 +6497,7 @@ (define_insn "@pred_dual_widen_<optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6522,7 +6522,7 @@ (define_insn "@pred_dual_widen_<optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6545,7 +6545,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6569,7 +6569,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6602,7 +6602,7 @@ (define_insn "@pred_widen_mul_<optab><mode>"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6629,7 +6629,7 @@ (define_insn "@pred_widen_mul_<optab><mode>_scalar"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6656,7 +6656,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>       (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6684,7 +6684,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>     (match_operand:VWEXTF 2 "register_operand"                 "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6728,7 +6728,8 @@ (define_insn "*pred_cmp<mode>"
>      [(match_operand:VF 4 "register_operand"          "   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6747,7 +6748,7 @@ (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
>      [(match_operand:VF 3 "register_operand"           " vr")
>       (match_operand:VF 4 "register_operand"           " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vv\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6771,7 +6772,8 @@ (define_insn "*pred_cmp<mode>_narrow"
>      [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6809,7 +6811,7 @@ (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 4 "register_operand"     "  f"))])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6834,7 +6836,8 @@ (define_insn "*pred_cmp<mode>_scalar"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6855,7 +6858,8 @@ (define_insn "*pred_cmp<mode>_scalar_narrow"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6893,7 +6897,7 @@ (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
>         (match_operand:<VEL> 4 "register_operand"     "  f"))
>       (match_operand:VF 3 "register_operand"          " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6918,7 +6922,8 @@ (define_insn "*pred_eqne<mode>_scalar"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6939,7 +6944,8 @@ (define_insn "*pred_eqne<mode>_scalar_narrow"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6966,7 +6972,7 @@ (define_insn "@pred_merge<mode>_scalar"
>          (match_operand:VF 2 "register_operand"      " vr,vr")
> (match_operand:<VM> 4 "register_operand"    " vm,vm"))
>        (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmerge.vfm\t%0,%2,%3,%4"
>    [(set_attr "type" "vfmerge")
>     (set_attr "mode" "<MODE>")])
> @@ -6994,7 +7000,7 @@ (define_insn "@pred_fcvt_x<v_su>_f<mode>"
>   (unspec:<VCONVERT>
>      [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7013,7 +7019,7 @@ (define_insn "@pred_<fix_cvt><mode>"
>   (any_fix:<VCONVERT>
>      (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7034,7 +7040,7 @@ (define_insn "@pred_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtitof")
>     (set_attr "mode" "<MODE>")])
> @@ -7062,7 +7068,7 @@ (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
>   (unspec:VWCONVERTI
>      [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
>   (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7081,7 +7087,7 @@ (define_insn "@pred_widen_<fix_cvt><mode>"
>   (any_fix:VWCONVERTI
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7100,7 +7106,7 @@ (define_insn "@pred_widen_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7119,7 +7125,7 @@ (define_insn "@pred_extend<mode>"
>   (float_extend:VWEXTF
>      (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7147,7 +7153,7 @@ (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
>   (unspec:<VNCONVERT>
>      [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.x<v_su>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7166,7 +7172,7 @@ (define_insn "@pred_narrow_<fix_cvt><mode>"
>   (any_fix:<VNCONVERT>
>      (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7187,7 +7193,7 @@ (define_insn "@pred_narrow_<float_cvt><mode>"
>   (any_float:<VNCONVERT>
>      (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.f.x<u>.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7208,7 +7214,7 @@ (define_insn "@pred_trunc<mode>"
>   (float_truncate:<V_DOUBLE_TRUNC>
>      (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7228,7 +7234,7 @@ (define_insn "@pred_rod_trunc<mode>"
>     [(float_truncate:<V_DOUBLE_TRUNC>
>        (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfncvt.rod.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7389,7 +7395,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7413,7 +7420,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7437,7 +7445,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>    (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7462,7 +7471,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7487,7 +7497,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7512,7 +7523,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>      (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7533,7 +7545,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
>      (match_operand:VWF 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7554,7 +7567,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
>      (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7657,7 +7671,7 @@ (define_insn "*pred_extract_first<mode>"
>      (match_operand:VF 1 "register_operand" "vr")
>      (parallel [(const_int 0)]))
>    (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmv.f.s\t%0,%1"
>    [(set_attr "type" "vfmovvf")
>     (set_attr "mode" "<MODE>")])
> @@ -7778,7 +7792,7 @@ (define_insn "@pred_slide<ud><mode>"
>    (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
>    (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
>    (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfslide<ud>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfslide<ud>")
>     (set_attr "mode" "<MODE>")])
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> index 0923b6bc4d2..f1a29b639e0 100644
> --- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> @@ -3,6 +3,8 @@
> #include "riscv_vector.h"
> +typedef _Float16 float16_t;
> +
> vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
>    return __riscv_vfncvt_f_f_w_f16mf4(src, vl);
> }
> @@ -43,11 +45,20 @@ vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
>    return __riscv_vfwcvt_f_f_v_f32m8(src, vl);
> }
> -/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
> +vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16mf4(base, vl);
> +}
> +
> +vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16m8(base, vl);
> +}
> +
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
> /* { dg-final { scan-assembler-times {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> /* { dg-final { scan-assembler-times {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> -
> +/* { dg-final { scan-assembler-times {vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */
> --
> 2.34.1
>
>
  
钟居哲 June 8, 2023, 8 a.m. UTC | #3
Oh. Good suggestion.  It's much better than my solution I think.



juzhe.zhong@rivai.ai
 
From: Kito Cheng
Date: 2023-06-08 15:58
To: juzhe.zhong@rivai.ai
CC: pan2.li; gcc-patches; Robin Dapp; jeffreyalaw; yanzhang.wang
Subject: Re: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
I am thinking, is it possible to use mode attr to remove the overhead
of checking the mode for other FP modes other than FP16?
 
e.g.
(define_mode_attr TARGET_FP_FULL_OPERATION_CHECKING [
  (VNx1HF "TARGET_ZVFH")
...
  (VNx1SF "1")
...
])
 
 
  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
->
  "TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>"
 
 
On Thu, Jun 8, 2023 at 2:35 PM juzhe.zhong@rivai.ai
<juzhe.zhong@rivai.ai> wrote:
>
> LGTM. Let's wait for Jeff and Robin. After this patch, we can start FP16 autovec.
>
>
>
> juzhe.zhong@rivai.ai
>
> From: pan2.li
> Date: 2023-06-08 14:29
> To: gcc-patches
> CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li; yanzhang.wang; kito.cheng
> Subject: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
> From: Pan Li <pan2.li@intel.com>
>
> This patch would like to refactor the requirement of both the ZVFH
> and ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the
> iterators of RVV. And then the ZVFH will leverage one function as
> the gate for FP16 supported or not.
>
> Please note the ZVFH will cover the ZVFHMIN instructions. This patch
> add one test for this.
>
> Signed-off-by: Pan Li <pan2.li@intel.com>
> Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai>
>
> gcc/ChangeLog:
>
> * config/riscv/riscv-protos.h (float_mode_supported_p):
> New function to float point is supported by extension.
> * config/riscv/riscv-v.cc (float_mode_supported_p):
> Ditto.
> * config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
> * config/riscv/vector.md: Add condition to FP define insn.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test
> for ZVFHMIN.
> ---
> gcc/config/riscv/riscv-protos.h               |   1 +
> gcc/config/riscv/riscv-v.cc                   |  12 ++
> gcc/config/riscv/vector-iterators.md          |  23 +--
> gcc/config/riscv/vector.md                    | 144 ++++++++++--------
> .../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
> 5 files changed, 118 insertions(+), 77 deletions(-)
>
> diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
> index ebbaac255f9..1f606f59ce1 100644
> --- a/gcc/config/riscv/riscv-protos.h
> +++ b/gcc/config/riscv/riscv-protos.h
> @@ -177,6 +177,7 @@ rtx expand_builtin (unsigned int, tree, rtx);
> bool check_builtin_call (location_t, vec<location_t>, unsigned int,
>    tree, unsigned int, tree *);
> bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
> +bool float_mode_supported_p (machine_mode mode);
> bool legitimize_move (rtx, rtx);
> void emit_vlmax_vsetvl (machine_mode, rtx);
> void emit_hard_vlmax_vsetvl (machine_mode, rtx);
> diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
> index 49752cd8899..fe4eb058ec0 100644
> --- a/gcc/config/riscv/riscv-v.cc
> +++ b/gcc/config/riscv/riscv-v.cc
> @@ -418,6 +418,18 @@ const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
>   && IN_RANGE (INTVAL (elt), minval, maxval));
> }
> +/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
> +   float point machine mode.  */
> +bool
> +float_mode_supported_p (machine_mode mode)
> +{
> +  machine_mode inner_mode = GET_MODE_INNER (mode);
> +
> +  gcc_assert (FLOAT_MODE_P (inner_mode));
> +
> +  return inner_mode == HFmode ? TARGET_ZVFH : true;
> +}
> +
> /* Return true if VEC is a constant in which every element is in the range
>     [MINVAL, MAXVAL].  The elements do not need to have the same value.
> diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
> index f4946d84449..234b712bc9d 100644
> --- a/gcc/config/riscv/vector-iterators.md
> +++ b/gcc/config/riscv/vector-iterators.md
> @@ -453,9 +453,8 @@ (define_mode_iterator V_WHOLE [
>    (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
>    (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> -  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
> -  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
>    (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> @@ -477,7 +476,11 @@ (define_mode_iterator V_WHOLE [
> (define_mode_iterator V_FRACT [
>    (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
>    (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") (VNx4HI "TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") (VNx4HF "TARGET_MIN_VLEN >= 128")
> +
> +  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
> +
>    (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
>    (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
>    (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> @@ -497,12 +500,12 @@ (define_mode_iterator VWEXTI [
> ])
> (define_mode_iterator VWEXTF [
> -  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> -  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> -  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> +  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> +  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> +  (VNx32SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
>    (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
>    (VNx2DF "TARGET_VECTOR_ELEN_FP_64")
> diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
> index 1d1847bd85a..2fe0233f102 100644
> --- a/gcc/config/riscv/vector.md
> +++ b/gcc/config/riscv/vector.md
> @@ -1364,7 +1364,7 @@ (define_insn "*pred_broadcast<mode>"
>   (vec_duplicate:VF
>     (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
>   (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vfmv.v.f\t%0,%3
>     vfmv.v.f\t%0,%3
> @@ -5685,7 +5685,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5705,7 +5705,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5728,7 +5728,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5749,7 +5749,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5772,7 +5772,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>     (vec_duplicate:VF
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5795,7 +5795,7 @@ (define_insn "@pred_<optab><mode>_reverse_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfr<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5815,7 +5815,7 @@ (define_insn "@pred_<copysign><mode>"
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>      (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5836,7 +5836,7 @@ (define_insn "@pred_<copysign><mode>_scalar"
>      (vec_duplicate:VF
>        (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5894,7 +5894,7 @@ (define_insn "*pred_<madd_msub><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
> @@ -5927,7 +5927,7 @@ (define_insn "*pred_<macc_msac><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
> @@ -5960,7 +5960,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>"
>       (match_operand:VF 3 "register_operand"     "   vr,   vr"))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6021,7 +6021,7 @@ (define_insn "*pred_<madd_msub><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
>     (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
> @@ -6055,7 +6055,7 @@ (define_insn "*pred_<macc_msac><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
>     (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
> @@ -6089,7 +6089,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "   vr,  vr"))
>     (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"          "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6154,7 +6154,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
> @@ -6188,7 +6188,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
> @@ -6222,7 +6222,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
>         (match_operand:VF 3 "register_operand"     "   vr,   vr")))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6285,7 +6285,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
>     (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
> @@ -6320,7 +6320,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
> @@ -6355,7 +6355,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "   vr,  vr")))
>     (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"            "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6399,7 +6399,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6422,7 +6422,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop_nofrm:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6445,7 +6445,7 @@ (define_insn "@pred_<misc_op><mode>"
>   (unspec:VF
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<misc_op>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -6464,7 +6464,7 @@ (define_insn "@pred_class<mode>"
>   (unspec:<VCONVERT>
>     [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfclass.v\t%0,%3%p1"
>    [(set_attr "type" "vfclass")
>     (set_attr "mode" "<MODE>")])
> @@ -6497,7 +6497,7 @@ (define_insn "@pred_dual_widen_<optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6522,7 +6522,7 @@ (define_insn "@pred_dual_widen_<optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6545,7 +6545,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6569,7 +6569,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6602,7 +6602,7 @@ (define_insn "@pred_widen_mul_<optab><mode>"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6629,7 +6629,7 @@ (define_insn "@pred_widen_mul_<optab><mode>_scalar"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6656,7 +6656,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>       (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6684,7 +6684,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>     (match_operand:VWEXTF 2 "register_operand"                 "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6728,7 +6728,8 @@ (define_insn "*pred_cmp<mode>"
>      [(match_operand:VF 4 "register_operand"          "   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6747,7 +6748,7 @@ (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
>      [(match_operand:VF 3 "register_operand"           " vr")
>       (match_operand:VF 4 "register_operand"           " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vv\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6771,7 +6772,8 @@ (define_insn "*pred_cmp<mode>_narrow"
>      [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6809,7 +6811,7 @@ (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 4 "register_operand"     "  f"))])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6834,7 +6836,8 @@ (define_insn "*pred_cmp<mode>_scalar"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6855,7 +6858,8 @@ (define_insn "*pred_cmp<mode>_scalar_narrow"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6893,7 +6897,7 @@ (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
>         (match_operand:<VEL> 4 "register_operand"     "  f"))
>       (match_operand:VF 3 "register_operand"          " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6918,7 +6922,8 @@ (define_insn "*pred_eqne<mode>_scalar"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6939,7 +6944,8 @@ (define_insn "*pred_eqne<mode>_scalar_narrow"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6966,7 +6972,7 @@ (define_insn "@pred_merge<mode>_scalar"
>          (match_operand:VF 2 "register_operand"      " vr,vr")
> (match_operand:<VM> 4 "register_operand"    " vm,vm"))
>        (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmerge.vfm\t%0,%2,%3,%4"
>    [(set_attr "type" "vfmerge")
>     (set_attr "mode" "<MODE>")])
> @@ -6994,7 +7000,7 @@ (define_insn "@pred_fcvt_x<v_su>_f<mode>"
>   (unspec:<VCONVERT>
>      [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7013,7 +7019,7 @@ (define_insn "@pred_<fix_cvt><mode>"
>   (any_fix:<VCONVERT>
>      (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7034,7 +7040,7 @@ (define_insn "@pred_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtitof")
>     (set_attr "mode" "<MODE>")])
> @@ -7062,7 +7068,7 @@ (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
>   (unspec:VWCONVERTI
>      [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
>   (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7081,7 +7087,7 @@ (define_insn "@pred_widen_<fix_cvt><mode>"
>   (any_fix:VWCONVERTI
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7100,7 +7106,7 @@ (define_insn "@pred_widen_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7119,7 +7125,7 @@ (define_insn "@pred_extend<mode>"
>   (float_extend:VWEXTF
>      (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7147,7 +7153,7 @@ (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
>   (unspec:<VNCONVERT>
>      [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.x<v_su>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7166,7 +7172,7 @@ (define_insn "@pred_narrow_<fix_cvt><mode>"
>   (any_fix:<VNCONVERT>
>      (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7187,7 +7193,7 @@ (define_insn "@pred_narrow_<float_cvt><mode>"
>   (any_float:<VNCONVERT>
>      (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.f.x<u>.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7208,7 +7214,7 @@ (define_insn "@pred_trunc<mode>"
>   (float_truncate:<V_DOUBLE_TRUNC>
>      (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7228,7 +7234,7 @@ (define_insn "@pred_rod_trunc<mode>"
>     [(float_truncate:<V_DOUBLE_TRUNC>
>        (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfncvt.rod.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7389,7 +7395,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7413,7 +7420,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7437,7 +7445,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>    (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7462,7 +7471,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7487,7 +7497,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7512,7 +7523,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>      (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7533,7 +7545,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
>      (match_operand:VWF 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7554,7 +7567,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
>      (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7657,7 +7671,7 @@ (define_insn "*pred_extract_first<mode>"
>      (match_operand:VF 1 "register_operand" "vr")
>      (parallel [(const_int 0)]))
>    (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmv.f.s\t%0,%1"
>    [(set_attr "type" "vfmovvf")
>     (set_attr "mode" "<MODE>")])
> @@ -7778,7 +7792,7 @@ (define_insn "@pred_slide<ud><mode>"
>    (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
>    (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
>    (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfslide<ud>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfslide<ud>")
>     (set_attr "mode" "<MODE>")])
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> index 0923b6bc4d2..f1a29b639e0 100644
> --- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> @@ -3,6 +3,8 @@
> #include "riscv_vector.h"
> +typedef _Float16 float16_t;
> +
> vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
>    return __riscv_vfncvt_f_f_w_f16mf4(src, vl);
> }
> @@ -43,11 +45,20 @@ vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
>    return __riscv_vfwcvt_f_f_v_f32m8(src, vl);
> }
> -/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
> +vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16mf4(base, vl);
> +}
> +
> +vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16m8(base, vl);
> +}
> +
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
> /* { dg-final { scan-assembler-times {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> /* { dg-final { scan-assembler-times {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> -
> +/* { dg-final { scan-assembler-times {vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */
> --
> 2.34.1
>
>
  
Li, Pan2 via Gcc-patches June 8, 2023, 8:01 a.m. UTC | #4
Looks doable up to a point, I will have a try and keep you posted.

Pan

-----Original Message-----
From: Kito Cheng <kito.cheng@gmail.com> 
Sent: Thursday, June 8, 2023 3:58 PM
To: juzhe.zhong@rivai.ai
Cc: Li, Pan2 <pan2.li@intel.com>; gcc-patches <gcc-patches@gcc.gnu.org>; Robin Dapp <rdapp.gcc@gmail.com>; jeffreyalaw <jeffreyalaw@gmail.com>; Wang, Yanzhang <yanzhang.wang@intel.com>
Subject: Re: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.

I am thinking, is it possible to use mode attr to remove the overhead of checking the mode for other FP modes other than FP16?

e.g.
(define_mode_attr TARGET_FP_FULL_OPERATION_CHECKING [
  (VNx1HF "TARGET_ZVFH")
...
  (VNx1SF "1")
...
])


  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
->
  "TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>"


On Thu, Jun 8, 2023 at 2:35 PM juzhe.zhong@rivai.ai <juzhe.zhong@rivai.ai> wrote:
>
> LGTM. Let's wait for Jeff and Robin. After this patch, we can start FP16 autovec.
>
>
>
> juzhe.zhong@rivai.ai
>
> From: pan2.li
> Date: 2023-06-08 14:29
> To: gcc-patches
> CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li; yanzhang.wang; 
> kito.cheng
> Subject: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
> From: Pan Li <pan2.li@intel.com>
>
> This patch would like to refactor the requirement of both the ZVFH and 
> ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the 
> iterators of RVV. And then the ZVFH will leverage one function as the 
> gate for FP16 supported or not.
>
> Please note the ZVFH will cover the ZVFHMIN instructions. This patch 
> add one test for this.
>
> Signed-off-by: Pan Li <pan2.li@intel.com> Co-Authored by: Juzhe-Zhong 
> <juzhe.zhong@rivai.ai>
>
> gcc/ChangeLog:
>
> * config/riscv/riscv-protos.h (float_mode_supported_p):
> New function to float point is supported by extension.
> * config/riscv/riscv-v.cc (float_mode_supported_p):
> Ditto.
> * config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
> * config/riscv/vector.md: Add condition to FP define insn.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test for 
> ZVFHMIN.
> ---
> gcc/config/riscv/riscv-protos.h               |   1 +
> gcc/config/riscv/riscv-v.cc                   |  12 ++
> gcc/config/riscv/vector-iterators.md          |  23 +--
> gcc/config/riscv/vector.md                    | 144 ++++++++++--------
> .../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
> 5 files changed, 118 insertions(+), 77 deletions(-)
>
> diff --git a/gcc/config/riscv/riscv-protos.h 
> b/gcc/config/riscv/riscv-protos.h index ebbaac255f9..1f606f59ce1 
> 100644
> --- a/gcc/config/riscv/riscv-protos.h
> +++ b/gcc/config/riscv/riscv-protos.h
> @@ -177,6 +177,7 @@ rtx expand_builtin (unsigned int, tree, rtx); bool 
> check_builtin_call (location_t, vec<location_t>, unsigned int,
>    tree, unsigned int, tree *);
> bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, 
> HOST_WIDE_INT);
> +bool float_mode_supported_p (machine_mode mode);
> bool legitimize_move (rtx, rtx);
> void emit_vlmax_vsetvl (machine_mode, rtx); void 
> emit_hard_vlmax_vsetvl (machine_mode, rtx); diff --git 
> a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc index 
> 49752cd8899..fe4eb058ec0 100644
> --- a/gcc/config/riscv/riscv-v.cc
> +++ b/gcc/config/riscv/riscv-v.cc
> @@ -418,6 +418,18 @@ const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
>   && IN_RANGE (INTVAL (elt), minval, maxval)); }
> +/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
> +   float point machine mode.  */
> +bool
> +float_mode_supported_p (machine_mode mode) {
> +  machine_mode inner_mode = GET_MODE_INNER (mode);
> +
> +  gcc_assert (FLOAT_MODE_P (inner_mode));
> +
> +  return inner_mode == HFmode ? TARGET_ZVFH : true; }
> +
> /* Return true if VEC is a constant in which every element is in the range
>     [MINVAL, MAXVAL].  The elements do not need to have the same value.
> diff --git a/gcc/config/riscv/vector-iterators.md 
> b/gcc/config/riscv/vector-iterators.md
> index f4946d84449..234b712bc9d 100644
> --- a/gcc/config/riscv/vector-iterators.md
> +++ b/gcc/config/riscv/vector-iterators.md
> @@ -453,9 +453,8 @@ (define_mode_iterator V_WHOLE [
>    (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
>    (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") 
> (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> -  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
> -  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")  
> + (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
>    (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32") @@ 
> -477,7 +476,11 @@ (define_mode_iterator V_WHOLE [ 
> (define_mode_iterator V_FRACT [
>    (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
>    (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") 
> (VNx4HI "TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") 
> (VNx4HF "TARGET_MIN_VLEN >= 128")
> +
> +  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")  
> + (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")  (VNx4HF 
> + "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
> +
>    (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
>    (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
>    (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128") @@ 
> -497,12 +500,12 @@ (define_mode_iterator VWEXTI [
> ])
> (define_mode_iterator VWEXTF [
> -  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> -  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> -  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> +  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && 
> + TARGET_MIN_VLEN < 128")  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && 
> + TARGET_VECTOR_ELEN_FP_32")  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && 
> + TARGET_VECTOR_ELEN_FP_32")  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && 
> + TARGET_VECTOR_ELEN_FP_32")  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && 
> + TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")  (VNx32SF 
> + "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && 
> + TARGET_MIN_VLEN >= 128")
>    (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
>    (VNx2DF "TARGET_VECTOR_ELEN_FP_64") diff --git 
> a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md index 
> 1d1847bd85a..2fe0233f102 100644
> --- a/gcc/config/riscv/vector.md
> +++ b/gcc/config/riscv/vector.md
> @@ -1364,7 +1364,7 @@ (define_insn "*pred_broadcast<mode>"
>   (vec_duplicate:VF
>     (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
>   (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vfmv.v.f\t%0,%3
>     vfmv.v.f\t%0,%3
> @@ -5685,7 +5685,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5705,7 +5705,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5728,7 +5728,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5749,7 +5749,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5772,7 +5772,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>     (vec_duplicate:VF
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5795,7 +5795,7 @@ (define_insn "@pred_<optab><mode>_reverse_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfr<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5815,7 +5815,7 @@ (define_insn "@pred_<copysign><mode>"
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>      (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5836,7 +5836,7 @@ (define_insn "@pred_<copysign><mode>_scalar"
>      (vec_duplicate:VF
>        (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5894,7 +5894,7 @@ (define_insn "*pred_<madd_msub><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
> @@ -5927,7 +5927,7 @@ (define_insn "*pred_<macc_msac><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
> @@ -5960,7 +5960,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>"
>       (match_operand:VF 3 "register_operand"     "   vr,   vr"))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6021,7 +6021,7 @@ (define_insn "*pred_<madd_msub><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
>     (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
> @@ -6055,7 +6055,7 @@ (define_insn "*pred_<macc_msac><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
>     (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
> @@ -6089,7 +6089,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "   vr,  vr"))
>     (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"          "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6154,7 +6154,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
> @@ -6188,7 +6188,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
> @@ -6222,7 +6222,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
>         (match_operand:VF 3 "register_operand"     "   vr,   vr")))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6285,7 +6285,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
>     (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
> @@ -6320,7 +6320,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
> @@ -6355,7 +6355,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "   vr,  vr")))
>     (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"            "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6399,7 +6399,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6422,7 +6422,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop_nofrm:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6445,7 +6445,7 @@ (define_insn "@pred_<misc_op><mode>"
>   (unspec:VF
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<misc_op>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -6464,7 +6464,7 @@ (define_insn "@pred_class<mode>"
>   (unspec:<VCONVERT>
>     [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  
> 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfclass.v\t%0,%3%p1"
>    [(set_attr "type" "vfclass")
>     (set_attr "mode" "<MODE>")])
> @@ -6497,7 +6497,7 @@ (define_insn "@pred_dual_widen_<optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6522,7 +6522,7 @@ 
> (define_insn "@pred_dual_widen_<optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6545,7 +6545,7 @@ 
> (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6569,7 +6569,7 @@ 
> (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6602,7 +6602,7 @@ 
> (define_insn "@pred_widen_mul_<optab><mode>"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6629,7 +6629,7 @@ 
> (define_insn "@pred_widen_mul_<optab><mode>_scalar"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6656,7 +6656,7 @@ 
> (define_insn "@pred_widen_mul_neg_<optab><mode>"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>       (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6684,7 +6684,7 @@ 
> (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>     (match_operand:VWEXTF 2 "register_operand"                 "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -6728,7 +6728,8 @@ 
> (define_insn "*pred_cmp<mode>"
>      [(match_operand:VF 4 "register_operand"          "   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6747,7 +6748,7 @@ (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
>      [(match_operand:VF 3 "register_operand"           " vr")
>       (match_operand:VF 4 "register_operand"           " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vv\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6771,7 +6772,8 @@ (define_insn "*pred_cmp<mode>_narrow"
>      [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6809,7 +6811,7 @@ (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 4 "register_operand"     "  f"))])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6834,7 +6836,8 @@ (define_insn "*pred_cmp<mode>_scalar"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6855,7 +6858,8 @@ (define_insn "*pred_cmp<mode>_scalar_narrow"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6893,7 +6897,7 @@ (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
>         (match_operand:<VEL> 4 "register_operand"     "  f"))
>       (match_operand:VF 3 "register_operand"          " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6918,7 +6922,8 @@ (define_insn "*pred_eqne<mode>_scalar"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6939,7 +6944,8 @@ (define_insn "*pred_eqne<mode>_scalar_narrow"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6966,7 +6972,7 @@ (define_insn "@pred_merge<mode>_scalar"
>          (match_operand:VF 2 "register_operand"      " vr,vr")
> (match_operand:<VM> 4 "register_operand"    " vm,vm"))
>        (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmerge.vfm\t%0,%2,%3,%4"
>    [(set_attr "type" "vfmerge")
>     (set_attr "mode" "<MODE>")])
> @@ -6994,7 +7000,7 @@ (define_insn "@pred_fcvt_x<v_su>_f<mode>"
>   (unspec:<VCONVERT>
>      [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  
> 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7013,7 +7019,7 @@ (define_insn "@pred_<fix_cvt><mode>"
>   (any_fix:<VCONVERT>
>      (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  
> 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7034,7 +7040,7 @@ (define_insn "@pred_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtitof")
>     (set_attr "mode" "<MODE>")])
> @@ -7062,7 +7068,7 @@ (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
>   (unspec:VWCONVERTI
>      [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
>   (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7081,7 +7087,7 @@ (define_insn "@pred_widen_<fix_cvt><mode>"
>   (any_fix:VWCONVERTI
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7100,7 +7106,7 @@ (define_insn "@pred_widen_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7119,7 +7125,7 @@ (define_insn "@pred_extend<mode>"
>   (float_extend:VWEXTF
>      (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -7147,7 +7153,7 @@ 
> (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
>   (unspec:<VNCONVERT>
>      [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.x<v_su>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7166,7 +7172,7 @@ (define_insn "@pred_narrow_<fix_cvt><mode>"
>   (any_fix:<VNCONVERT>
>      (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7187,7 +7193,7 @@ (define_insn "@pred_narrow_<float_cvt><mode>"
>   (any_float:<VNCONVERT>
>      (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.f.x<u>.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7208,7 +7214,7 @@ (define_insn "@pred_trunc<mode>"
>   (float_truncate:<V_DOUBLE_TRUNC>
>      (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -7228,7 +7234,7 @@ 
> (define_insn "@pred_rod_trunc<mode>"
>     [(float_truncate:<V_DOUBLE_TRUNC>
>        (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfncvt.rod.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")]) @@ -7389,7 +7395,8 @@ 
> (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7413,7 +7420,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7437,7 +7445,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>    (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7462,7 +7471,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7487,7 +7497,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7512,7 +7523,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>      (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7533,7 +7545,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
>      (match_operand:VWF 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7554,7 +7567,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
>      (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7657,7 +7671,7 @@ (define_insn "*pred_extract_first<mode>"
>      (match_operand:VF 1 "register_operand" "vr")
>      (parallel [(const_int 0)]))
>    (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmv.f.s\t%0,%1"
>    [(set_attr "type" "vfmovvf")
>     (set_attr "mode" "<MODE>")])
> @@ -7778,7 +7792,7 @@ (define_insn "@pred_slide<ud><mode>"
>    (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
>    (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
>    (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfslide<ud>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfslide<ud>")
>     (set_attr "mode" "<MODE>")])
> diff --git 
> a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c 
> b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> index 0923b6bc4d2..f1a29b639e0 100644
> --- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> @@ -3,6 +3,8 @@
> #include "riscv_vector.h"
> +typedef _Float16 float16_t;
> +
> vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
>    return __riscv_vfncvt_f_f_w_f16mf4(src, vl); } @@ -43,11 +45,20 @@ 
> vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
>    return __riscv_vfwcvt_f_f_v_f32m8(src, vl); }
> -/* { dg-final { scan-assembler-times 
> {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
> +vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16mf4(base, vl); }
> +
> +vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16m8(base, vl); }
> +
> +/* { dg-final { scan-assembler-times 
> +{vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } 
> +*/
> /* { dg-final { scan-assembler-times 
> {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times 
> {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times 
> {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times 
> {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
> +/* { dg-final { scan-assembler-times 
> +{vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
> /* { dg-final { scan-assembler-times 
> {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> /* { dg-final { scan-assembler-times 
> {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> -
> +/* { dg-final { scan-assembler-times 
> +{vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */
> --
> 2.34.1
>
>
  
钟居哲 June 8, 2023, 8:32 a.m. UTC | #5
I have an idea base on what Kito said.
We enable vfadd FP16 for TARGET_ZVFH. But we don't need to add TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>
for each instruction.

We can reference riscv.md:
(define_attr "ext_enabled" "no,yes"
  (cond [(eq_attr "ext" "base")
   (const_string "yes")

   (and (eq_attr "ext" "f")
        (match_test "TARGET_HARD_FLOAT"))
   (const_string "yes")

   (and (eq_attr "ext" "d")
        (match_test "TARGET_DOUBLE_FLOAT"))
   (const_string "yes")

   (and (eq_attr "ext" "vector")
        (match_test "TARGET_VECTOR"))
   (const_string "yes")
  ]
  (const_string "no")))

Define a new attribute as follows:
(define_attr "fp16_vector_enabled" "no,yes"
  (cond [
   (and (eq_attr "type" "vfalu")
(and eq_attr "mode" "VNx1HF")
        (match_test "!TARGET_ZVFH")))
   (const_string "no")
  ]
  (const_string "yes")))


I think you can do experiment with this to see whether it can disable MD pattern.



juzhe.zhong@rivai.ai
 
From: Kito Cheng
Date: 2023-06-08 15:58
To: juzhe.zhong@rivai.ai
CC: pan2.li; gcc-patches; Robin Dapp; jeffreyalaw; yanzhang.wang
Subject: Re: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
I am thinking, is it possible to use mode attr to remove the overhead
of checking the mode for other FP modes other than FP16?
 
e.g.
(define_mode_attr TARGET_FP_FULL_OPERATION_CHECKING [
  (VNx1HF "TARGET_ZVFH")
...
  (VNx1SF "1")
...
])
 
 
  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
->
  "TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>"
 
 
On Thu, Jun 8, 2023 at 2:35 PM juzhe.zhong@rivai.ai
<juzhe.zhong@rivai.ai> wrote:
>
> LGTM. Let's wait for Jeff and Robin. After this patch, we can start FP16 autovec.
>
>
>
> juzhe.zhong@rivai.ai
>
> From: pan2.li
> Date: 2023-06-08 14:29
> To: gcc-patches
> CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li; yanzhang.wang; kito.cheng
> Subject: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
> From: Pan Li <pan2.li@intel.com>
>
> This patch would like to refactor the requirement of both the ZVFH
> and ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the
> iterators of RVV. And then the ZVFH will leverage one function as
> the gate for FP16 supported or not.
>
> Please note the ZVFH will cover the ZVFHMIN instructions. This patch
> add one test for this.
>
> Signed-off-by: Pan Li <pan2.li@intel.com>
> Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai>
>
> gcc/ChangeLog:
>
> * config/riscv/riscv-protos.h (float_mode_supported_p):
> New function to float point is supported by extension.
> * config/riscv/riscv-v.cc (float_mode_supported_p):
> Ditto.
> * config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
> * config/riscv/vector.md: Add condition to FP define insn.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test
> for ZVFHMIN.
> ---
> gcc/config/riscv/riscv-protos.h               |   1 +
> gcc/config/riscv/riscv-v.cc                   |  12 ++
> gcc/config/riscv/vector-iterators.md          |  23 +--
> gcc/config/riscv/vector.md                    | 144 ++++++++++--------
> .../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
> 5 files changed, 118 insertions(+), 77 deletions(-)
>
> diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
> index ebbaac255f9..1f606f59ce1 100644
> --- a/gcc/config/riscv/riscv-protos.h
> +++ b/gcc/config/riscv/riscv-protos.h
> @@ -177,6 +177,7 @@ rtx expand_builtin (unsigned int, tree, rtx);
> bool check_builtin_call (location_t, vec<location_t>, unsigned int,
>    tree, unsigned int, tree *);
> bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
> +bool float_mode_supported_p (machine_mode mode);
> bool legitimize_move (rtx, rtx);
> void emit_vlmax_vsetvl (machine_mode, rtx);
> void emit_hard_vlmax_vsetvl (machine_mode, rtx);
> diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
> index 49752cd8899..fe4eb058ec0 100644
> --- a/gcc/config/riscv/riscv-v.cc
> +++ b/gcc/config/riscv/riscv-v.cc
> @@ -418,6 +418,18 @@ const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
>   && IN_RANGE (INTVAL (elt), minval, maxval));
> }
> +/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
> +   float point machine mode.  */
> +bool
> +float_mode_supported_p (machine_mode mode)
> +{
> +  machine_mode inner_mode = GET_MODE_INNER (mode);
> +
> +  gcc_assert (FLOAT_MODE_P (inner_mode));
> +
> +  return inner_mode == HFmode ? TARGET_ZVFH : true;
> +}
> +
> /* Return true if VEC is a constant in which every element is in the range
>     [MINVAL, MAXVAL].  The elements do not need to have the same value.
> diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
> index f4946d84449..234b712bc9d 100644
> --- a/gcc/config/riscv/vector-iterators.md
> +++ b/gcc/config/riscv/vector-iterators.md
> @@ -453,9 +453,8 @@ (define_mode_iterator V_WHOLE [
>    (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
>    (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> -  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
> -  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
>    (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> @@ -477,7 +476,11 @@ (define_mode_iterator V_WHOLE [
> (define_mode_iterator V_FRACT [
>    (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
>    (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") (VNx4HI "TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") (VNx4HF "TARGET_MIN_VLEN >= 128")
> +
> +  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
> +
>    (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
>    (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
>    (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> @@ -497,12 +500,12 @@ (define_mode_iterator VWEXTI [
> ])
> (define_mode_iterator VWEXTF [
> -  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> -  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> -  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> +  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> +  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> +  (VNx32SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
>    (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
>    (VNx2DF "TARGET_VECTOR_ELEN_FP_64")
> diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
> index 1d1847bd85a..2fe0233f102 100644
> --- a/gcc/config/riscv/vector.md
> +++ b/gcc/config/riscv/vector.md
> @@ -1364,7 +1364,7 @@ (define_insn "*pred_broadcast<mode>"
>   (vec_duplicate:VF
>     (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
>   (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vfmv.v.f\t%0,%3
>     vfmv.v.f\t%0,%3
> @@ -5685,7 +5685,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5705,7 +5705,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5728,7 +5728,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5749,7 +5749,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5772,7 +5772,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>     (vec_duplicate:VF
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5795,7 +5795,7 @@ (define_insn "@pred_<optab><mode>_reverse_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfr<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5815,7 +5815,7 @@ (define_insn "@pred_<copysign><mode>"
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>      (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5836,7 +5836,7 @@ (define_insn "@pred_<copysign><mode>_scalar"
>      (vec_duplicate:VF
>        (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5894,7 +5894,7 @@ (define_insn "*pred_<madd_msub><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
> @@ -5927,7 +5927,7 @@ (define_insn "*pred_<macc_msac><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
> @@ -5960,7 +5960,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>"
>       (match_operand:VF 3 "register_operand"     "   vr,   vr"))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6021,7 +6021,7 @@ (define_insn "*pred_<madd_msub><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
>     (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
> @@ -6055,7 +6055,7 @@ (define_insn "*pred_<macc_msac><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
>     (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
> @@ -6089,7 +6089,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "   vr,  vr"))
>     (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"          "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6154,7 +6154,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
> @@ -6188,7 +6188,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
> @@ -6222,7 +6222,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
>         (match_operand:VF 3 "register_operand"     "   vr,   vr")))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6285,7 +6285,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
>     (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
> @@ -6320,7 +6320,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
> @@ -6355,7 +6355,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "   vr,  vr")))
>     (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"            "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6399,7 +6399,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6422,7 +6422,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop_nofrm:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6445,7 +6445,7 @@ (define_insn "@pred_<misc_op><mode>"
>   (unspec:VF
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<misc_op>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -6464,7 +6464,7 @@ (define_insn "@pred_class<mode>"
>   (unspec:<VCONVERT>
>     [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfclass.v\t%0,%3%p1"
>    [(set_attr "type" "vfclass")
>     (set_attr "mode" "<MODE>")])
> @@ -6497,7 +6497,7 @@ (define_insn "@pred_dual_widen_<optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6522,7 +6522,7 @@ (define_insn "@pred_dual_widen_<optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6545,7 +6545,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6569,7 +6569,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6602,7 +6602,7 @@ (define_insn "@pred_widen_mul_<optab><mode>"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6629,7 +6629,7 @@ (define_insn "@pred_widen_mul_<optab><mode>_scalar"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6656,7 +6656,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>       (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6684,7 +6684,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>     (match_operand:VWEXTF 2 "register_operand"                 "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6728,7 +6728,8 @@ (define_insn "*pred_cmp<mode>"
>      [(match_operand:VF 4 "register_operand"          "   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6747,7 +6748,7 @@ (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
>      [(match_operand:VF 3 "register_operand"           " vr")
>       (match_operand:VF 4 "register_operand"           " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vv\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6771,7 +6772,8 @@ (define_insn "*pred_cmp<mode>_narrow"
>      [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6809,7 +6811,7 @@ (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 4 "register_operand"     "  f"))])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6834,7 +6836,8 @@ (define_insn "*pred_cmp<mode>_scalar"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6855,7 +6858,8 @@ (define_insn "*pred_cmp<mode>_scalar_narrow"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6893,7 +6897,7 @@ (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
>         (match_operand:<VEL> 4 "register_operand"     "  f"))
>       (match_operand:VF 3 "register_operand"          " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6918,7 +6922,8 @@ (define_insn "*pred_eqne<mode>_scalar"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6939,7 +6944,8 @@ (define_insn "*pred_eqne<mode>_scalar_narrow"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6966,7 +6972,7 @@ (define_insn "@pred_merge<mode>_scalar"
>          (match_operand:VF 2 "register_operand"      " vr,vr")
> (match_operand:<VM> 4 "register_operand"    " vm,vm"))
>        (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmerge.vfm\t%0,%2,%3,%4"
>    [(set_attr "type" "vfmerge")
>     (set_attr "mode" "<MODE>")])
> @@ -6994,7 +7000,7 @@ (define_insn "@pred_fcvt_x<v_su>_f<mode>"
>   (unspec:<VCONVERT>
>      [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7013,7 +7019,7 @@ (define_insn "@pred_<fix_cvt><mode>"
>   (any_fix:<VCONVERT>
>      (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7034,7 +7040,7 @@ (define_insn "@pred_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtitof")
>     (set_attr "mode" "<MODE>")])
> @@ -7062,7 +7068,7 @@ (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
>   (unspec:VWCONVERTI
>      [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
>   (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7081,7 +7087,7 @@ (define_insn "@pred_widen_<fix_cvt><mode>"
>   (any_fix:VWCONVERTI
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7100,7 +7106,7 @@ (define_insn "@pred_widen_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7119,7 +7125,7 @@ (define_insn "@pred_extend<mode>"
>   (float_extend:VWEXTF
>      (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7147,7 +7153,7 @@ (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
>   (unspec:<VNCONVERT>
>      [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.x<v_su>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7166,7 +7172,7 @@ (define_insn "@pred_narrow_<fix_cvt><mode>"
>   (any_fix:<VNCONVERT>
>      (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7187,7 +7193,7 @@ (define_insn "@pred_narrow_<float_cvt><mode>"
>   (any_float:<VNCONVERT>
>      (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.f.x<u>.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7208,7 +7214,7 @@ (define_insn "@pred_trunc<mode>"
>   (float_truncate:<V_DOUBLE_TRUNC>
>      (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7228,7 +7234,7 @@ (define_insn "@pred_rod_trunc<mode>"
>     [(float_truncate:<V_DOUBLE_TRUNC>
>        (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfncvt.rod.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7389,7 +7395,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7413,7 +7420,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7437,7 +7445,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>    (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7462,7 +7471,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7487,7 +7497,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7512,7 +7523,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>      (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7533,7 +7545,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
>      (match_operand:VWF 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7554,7 +7567,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
>      (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7657,7 +7671,7 @@ (define_insn "*pred_extract_first<mode>"
>      (match_operand:VF 1 "register_operand" "vr")
>      (parallel [(const_int 0)]))
>    (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmv.f.s\t%0,%1"
>    [(set_attr "type" "vfmovvf")
>     (set_attr "mode" "<MODE>")])
> @@ -7778,7 +7792,7 @@ (define_insn "@pred_slide<ud><mode>"
>    (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
>    (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
>    (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfslide<ud>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfslide<ud>")
>     (set_attr "mode" "<MODE>")])
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> index 0923b6bc4d2..f1a29b639e0 100644
> --- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> @@ -3,6 +3,8 @@
> #include "riscv_vector.h"
> +typedef _Float16 float16_t;
> +
> vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
>    return __riscv_vfncvt_f_f_w_f16mf4(src, vl);
> }
> @@ -43,11 +45,20 @@ vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
>    return __riscv_vfwcvt_f_f_v_f32m8(src, vl);
> }
> -/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
> +vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16mf4(base, vl);
> +}
> +
> +vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16m8(base, vl);
> +}
> +
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
> /* { dg-final { scan-assembler-times {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> /* { dg-final { scan-assembler-times {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> -
> +/* { dg-final { scan-assembler-times {vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */
> --
> 2.34.1
>
>
  
Li, Pan2 via Gcc-patches June 8, 2023, 1:13 p.m. UTC | #6
Thanks Juzhe for the idea. It looks work well as we expected, with the following try.


  1.  Allow all FP=16 types for vfadd, then _zvfh and _zvfhmin will be OK.
  2.  Add restriction define_attr as juzhe mentioned, then _zvfh works well, and _zvfhmin will meet error like unsatisfied insn.

I think only we need to do is the define_attr, and there will be no changes to vector.md. If no more concern, will have a try for this approach.

Pan

From: juzhe.zhong@rivai.ai <juzhe.zhong@rivai.ai>
Sent: Thursday, June 8, 2023 4:32 PM
To: kito.cheng <kito.cheng@gmail.com>
Cc: Li, Pan2 <pan2.li@intel.com>; gcc-patches <gcc-patches@gcc.gnu.org>; Robin Dapp <rdapp.gcc@gmail.com>; jeffreyalaw <jeffreyalaw@gmail.com>; Wang, Yanzhang <yanzhang.wang@intel.com>
Subject: Re: Re: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.

I have an idea base on what Kito said.
We enable vfadd FP16 for TARGET_ZVFH. But we don't need to add TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>
for each instruction.

We can reference riscv.md:
(define_attr "ext_enabled" "no,yes"
  (cond [(eq_attr "ext" "base")
   (const_string "yes")

   (and (eq_attr "ext" "f")
        (match_test "TARGET_HARD_FLOAT"))
   (const_string "yes")

   (and (eq_attr "ext" "d")
        (match_test "TARGET_DOUBLE_FLOAT"))
   (const_string "yes")

   (and (eq_attr "ext" "vector")
        (match_test "TARGET_VECTOR"))
   (const_string "yes")
  ]
  (const_string "no")))

Define a new attribute as follows:
(define_attr "fp16_vector_enabled" "no,yes"
  (cond [
   (and (eq_attr "type" "vfalu")
         (and eq_attr "mode" "VNx1HF")
            (match_test "!TARGET_ZVFH")))
   (const_string "no")
  ]
  (const_string "yes")))


I think you can do experiment with this to see whether it can disable MD pattern.

________________________________
juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>

From: Kito Cheng<mailto:kito.cheng@gmail.com>
Date: 2023-06-08 15:58
To: juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>
CC: pan2.li<mailto:pan2.li@intel.com>; gcc-patches<mailto:gcc-patches@gcc.gnu.org>; Robin Dapp<mailto:rdapp.gcc@gmail.com>; jeffreyalaw<mailto:jeffreyalaw@gmail.com>; yanzhang.wang<mailto:yanzhang.wang@intel.com>
Subject: Re: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
I am thinking, is it possible to use mode attr to remove the overhead
of checking the mode for other FP modes other than FP16?

e.g.
(define_mode_attr TARGET_FP_FULL_OPERATION_CHECKING [
  (VNx1HF "TARGET_ZVFH")
...
  (VNx1SF "1")
...
])


  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
->
  "TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>"


On Thu, Jun 8, 2023 at 2:35 PM juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>
<juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>> wrote:
>
> LGTM. Let's wait for Jeff and Robin. After this patch, we can start FP16 autovec.
>
>
>
> juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>
>
> From: pan2.li
> Date: 2023-06-08 14:29
> To: gcc-patches
> CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li; yanzhang.wang; kito.cheng
> Subject: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
> From: Pan Li <pan2.li@intel.com<mailto:pan2.li@intel.com>>
>
> This patch would like to refactor the requirement of both the ZVFH
> and ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the
> iterators of RVV. And then the ZVFH will leverage one function as
> the gate for FP16 supported or not.
>
> Please note the ZVFH will cover the ZVFHMIN instructions. This patch
> add one test for this.
>
> Signed-off-by: Pan Li <pan2.li@intel.com<mailto:pan2.li@intel.com>>
> Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>>
>
> gcc/ChangeLog:
>
> * config/riscv/riscv-protos.h (float_mode_supported_p):
> New function to float point is supported by extension.
> * config/riscv/riscv-v.cc (float_mode_supported_p):
> Ditto.
> * config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
> * config/riscv/vector.md: Add condition to FP define insn.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test
> for ZVFHMIN.
> ---
> gcc/config/riscv/riscv-protos.h               |   1 +
> gcc/config/riscv/riscv-v.cc                   |  12 ++
> gcc/config/riscv/vector-iterators.md          |  23 +--
> gcc/config/riscv/vector.md                    | 144 ++++++++++--------
> .../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
> 5 files changed, 118 insertions(+), 77 deletions(-)
>
> diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
> index ebbaac255f9..1f606f59ce1 100644
> --- a/gcc/config/riscv/riscv-protos.h
> +++ b/gcc/config/riscv/riscv-protos.h
> @@ -177,6 +177,7 @@ rtx expand_builtin (unsigned int, tree, rtx);
> bool check_builtin_call (location_t, vec<location_t>, unsigned int,
>    tree, unsigned int, tree *);
> bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
> +bool float_mode_supported_p (machine_mode mode);
> bool legitimize_move (rtx, rtx);
> void emit_vlmax_vsetvl (machine_mode, rtx);
> void emit_hard_vlmax_vsetvl (machine_mode, rtx);
> diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
> index 49752cd8899..fe4eb058ec0 100644
> --- a/gcc/config/riscv/riscv-v.cc
> +++ b/gcc/config/riscv/riscv-v.cc
> @@ -418,6 +418,18 @@ const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
>   && IN_RANGE (INTVAL (elt), minval, maxval));
> }
> +/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
> +   float point machine mode.  */
> +bool
> +float_mode_supported_p (machine_mode mode)
> +{
> +  machine_mode inner_mode = GET_MODE_INNER (mode);
> +
> +  gcc_assert (FLOAT_MODE_P (inner_mode));
> +
> +  return inner_mode == HFmode ? TARGET_ZVFH : true;
> +}
> +
> /* Return true if VEC is a constant in which every element is in the range
>     [MINVAL, MAXVAL].  The elements do not need to have the same value.
> diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
> index f4946d84449..234b712bc9d 100644
> --- a/gcc/config/riscv/vector-iterators.md
> +++ b/gcc/config/riscv/vector-iterators.md
> @@ -453,9 +453,8 @@ (define_mode_iterator V_WHOLE [
>    (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
>    (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> -  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
> -  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
>    (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
>    (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> @@ -477,7 +476,11 @@ (define_mode_iterator V_WHOLE [
> (define_mode_iterator V_FRACT [
>    (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
>    (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") (VNx4HI "TARGET_MIN_VLEN >= 128")
> -  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") (VNx4HF "TARGET_MIN_VLEN >= 128")
> +
> +  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
> +
>    (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
>    (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
>    (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> @@ -497,12 +500,12 @@ (define_mode_iterator VWEXTI [
> ])
> (define_mode_iterator VWEXTF [
> -  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> -  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
> -  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> -  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> +  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> +  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> +  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> +  (VNx32SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
>    (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
>    (VNx2DF "TARGET_VECTOR_ELEN_FP_64")
> diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
> index 1d1847bd85a..2fe0233f102 100644
> --- a/gcc/config/riscv/vector.md
> +++ b/gcc/config/riscv/vector.md
> @@ -1364,7 +1364,7 @@ (define_insn "*pred_broadcast<mode>"
>   (vec_duplicate:VF
>     (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
>   (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>
>     vfmv.v.f\t%0,%3<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>
>     vfmv.v.f\t%0,%3<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>
> @@ -5685,7 +5685,7 @@ (define_insn "@pred_<optab><mode<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5705,7 +5705,7 @@ (define_insn "@pred_<optab><mode>"
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5728,7 +5728,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5749,7 +5749,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5772,7 +5772,7 @@ (define_insn "@pred_<optab><mode>_scalar"
>     (vec_duplicate:VF
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5795,7 +5795,7 @@ (define_insn "@pred_<optab><mode>_reverse_scalar"
>       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfr<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -5815,7 +5815,7 @@ (define_insn "@pred_<copysign><mode>"
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
>      (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5836,7 +5836,7 @@ (define_insn "@pred_<copysign><mode>_scalar"
>      (vec_duplicate:VF
>        (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfsgnj<nx>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfsgnj")
>     (set_attr "mode" "<MODE>")])
> @@ -5894,7 +5894,7 @@ (define_insn "*pred_<madd_msub><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
> @@ -5927,7 +5927,7 @@ (define_insn "*pred_<macc_msac><mode>"
>       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
> @@ -5960,7 +5960,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>"
>       (match_operand:VF 3 "register_operand"     "   vr,   vr"))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6021,7 +6021,7 @@ (define_insn "*pred_<madd_msub><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
>     (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<madd_msub>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
> @@ -6055,7 +6055,7 @@ (define_insn "*pred_<macc_msac><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
>     (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<macc_msac>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
> @@ -6089,7 +6089,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
>       (match_operand:VF 3 "register_operand"      "   vr,  vr"))
>     (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"          "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6154,7 +6154,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
>     vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
> @@ -6188,7 +6188,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>"
>         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
> @@ -6222,7 +6222,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
>         (match_operand:VF 3 "register_operand"     "   vr,   vr")))
>     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
>   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[2], operands[5])
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
> @@ -6285,7 +6285,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
>     (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
>   (match_dup 3)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
>     vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
> @@ -6320,7 +6320,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
>     (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
>   (match_dup 4)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "@
>     vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
>     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
> @@ -6355,7 +6355,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
>         (match_operand:VF 3 "register_operand"      "   vr,  vr")))
>     (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
>   (match_operand:VF 5 "register_operand"            "    0,  vr")))]
> -  "TARGET_VECTOR
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
>     && !rtx_equal_p (operands[3], operands[5])
>     && !rtx_equal_p (operands[4], operands[5])"
>    "@
> @@ -6399,7 +6399,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6422,7 +6422,7 @@ (define_insn "@pred_<optab><mode>"
>   (any_float_unop_nofrm:VF
>     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<insn>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")
> @@ -6445,7 +6445,7 @@ (define_insn "@pred_<misc_op><mode>"
>   (unspec:VF
>     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
>   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vf<misc_op>.v\t%0,%3%p1"
>    [(set_attr "type" "<float_insn_type>")
>     (set_attr "mode" "<MODE>")])
> @@ -6464,7 +6464,7 @@ (define_insn "@pred_class<mode>"
>   (unspec:<VCONVERT>
>     [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfclass.v\t%0,%3%p1"
>    [(set_attr "type" "vfclass")
>     (set_attr "mode" "<MODE>")])
> @@ -6497,7 +6497,7 @@ (define_insn "@pred_dual_widen_<optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6522,7 +6522,7 @@ (define_insn "@pred_dual_widen_<optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6545,7 +6545,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
>     (float_extend:VWEXTF
>       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wv\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6569,7 +6569,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
>       (vec_duplicate:<V_DOUBLE_TRUNC>
> (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
>   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<insn>.wf\t%0,%3,%4%p1"
>    [(set_attr "type" "vf<widen_binop_insn_type>")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6602,7 +6602,7 @@ (define_insn "@pred_widen_mul_<optab><mode>"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6629,7 +6629,7 @@ (define_insn "@pred_widen_mul_<optab><mode>_scalar"
>         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
>     (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<macc_msac>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6656,7 +6656,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>       (match_operand:VWEXTF 2 "register_operand"               "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6684,7 +6684,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
>           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
>     (match_operand:VWEXTF 2 "register_operand"                 "    0"))
>   (match_dup 2)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwmuladd")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -6728,7 +6728,8 @@ (define_insn "*pred_cmp<mode>"
>      [(match_operand:VF 4 "register_operand"          "   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6747,7 +6748,7 @@ (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
>      [(match_operand:VF 3 "register_operand"           " vr")
>       (match_operand:VF 4 "register_operand"           " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vv\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6771,7 +6772,8 @@ (define_insn "*pred_cmp<mode>_narrow"
>      [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
>       (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vv\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6809,7 +6811,7 @@ (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 4 "register_operand"     "  f"))])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6834,7 +6836,8 @@ (define_insn "*pred_cmp<mode>_scalar"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6855,7 +6858,8 @@ (define_insn "*pred_cmp<mode>_scalar_narrow"
>       (vec_duplicate:VF
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6893,7 +6897,7 @@ (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
>         (match_operand:<VEL> 4 "register_operand"     "  f"))
>       (match_operand:VF 3 "register_operand"          " vr")])
>   (match_dup 1)))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B2.vf\t%0,%3,%4,v0.t"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")
> @@ -6918,7 +6922,8 @@ (define_insn "*pred_eqne<mode>_scalar"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6939,7 +6944,8 @@ (define_insn "*pred_eqne<mode>_scalar_narrow"
>         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
>       (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
>   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vmf%B3.vf\t%0,%4,%5%p1"
>    [(set_attr "type" "vfcmp")
>     (set_attr "mode" "<MODE>")])
> @@ -6966,7 +6972,7 @@ (define_insn "@pred_merge<mode>_scalar"
>          (match_operand:VF 2 "register_operand"      " vr,vr")
> (match_operand:<VM> 4 "register_operand"    " vm,vm"))
>        (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmerge.vfm\t%0,%2,%3,%4"
>    [(set_attr "type" "vfmerge")
>     (set_attr "mode" "<MODE>")])
> @@ -6994,7 +7000,7 @@ (define_insn "@pred_fcvt_x<v_su>_f<mode>"
>   (unspec:<VCONVERT>
>      [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7013,7 +7019,7 @@ (define_insn "@pred_<fix_cvt><mode>"
>   (any_fix:<VCONVERT>
>      (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
>   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtftoi")
>     (set_attr "mode" "<MODE>")])
> @@ -7034,7 +7040,7 @@ (define_insn "@pred_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
>   (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfcvtitof")
>     (set_attr "mode" "<MODE>")])
> @@ -7062,7 +7068,7 @@ (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
>   (unspec:VWCONVERTI
>      [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
>   (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7081,7 +7087,7 @@ (define_insn "@pred_widen_<fix_cvt><mode>"
>   (any_fix:VWCONVERTI
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7100,7 +7106,7 @@ (define_insn "@pred_widen_<float_cvt><mode>"
>   (any_float:VF
>      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.x<u>.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7119,7 +7125,7 @@ (define_insn "@pred_extend<mode>"
>   (float_extend:VWEXTF
>      (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
>   (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwcvt.f.f.v\t%0,%3%p1"
>    [(set_attr "type" "vfwcvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7147,7 +7153,7 @@ (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
>   (unspec:<VNCONVERT>
>      [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.x<v_su>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7166,7 +7172,7 @@ (define_insn "@pred_narrow_<fix_cvt><mode>"
>   (any_fix:<VNCONVERT>
>      (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftoi")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7187,7 +7193,7 @@ (define_insn "@pred_narrow_<float_cvt><mode>"
>   (any_float:<VNCONVERT>
>      (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
>    "vfncvt.f.x<u>.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtitof")
>     (set_attr "mode" "<VNCONVERT>")])
> @@ -7208,7 +7214,7 @@ (define_insn "@pred_trunc<mode>"
>   (float_truncate:<V_DOUBLE_TRUNC>
>      (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfncvt.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7228,7 +7234,7 @@ (define_insn "@pred_rod_trunc<mode>"
>     [(float_truncate:<V_DOUBLE_TRUNC>
>        (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
>   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
>    "vfncvt.rod.f.f.w\t%0,%3%p1"
>    [(set_attr "type" "vfncvtftof")
>     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> @@ -7389,7 +7395,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7413,7 +7420,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>    (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7437,7 +7445,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
>          (parallel [(const_int 0)])))
>      (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>    (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<reduc>.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfredu")
>     (set_attr "mode" "<MODE>")])
> @@ -7462,7 +7471,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7487,7 +7497,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
>      (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7512,7 +7523,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
>            (parallel [(const_int 0)])))
>        (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
>      (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7533,7 +7545,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
>      (match_operand:VWF 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7554,7 +7567,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
>      (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
>      (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfwred<order>sum.vs\t%0,%3,%4%p1"
>    [(set_attr "type" "vfwred<order>")
>     (set_attr "mode" "<MODE>")])
> @@ -7657,7 +7671,7 @@ (define_insn "*pred_extract_first<mode>"
>      (match_operand:VF 1 "register_operand" "vr")
>      (parallel [(const_int 0)]))
>    (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfmv.f.s\t%0,%1"
>    [(set_attr "type" "vfmovvf")
>     (set_attr "mode" "<MODE>")])
> @@ -7778,7 +7792,7 @@ (define_insn "@pred_slide<ud><mode>"
>    (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
>    (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
>    (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
> -  "TARGET_VECTOR"
> +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
>    "vfslide<ud>.vf\t%0,%3,%4%p1"
>    [(set_attr "type" "vfslide<ud>")
>     (set_attr "mode" "<MODE>")])
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> index 0923b6bc4d2..f1a29b639e0 100644
> --- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> @@ -3,6 +3,8 @@
> #include "riscv_vector.h"
> +typedef _Float16 float16_t;
> +
> vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
>    return __riscv_vfncvt_f_f_w_f16mf4(src, vl);
> }
> @@ -43,11 +45,20 @@ vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
>    return __riscv_vfwcvt_f_f_v_f32m8(src, vl);
> }
> -/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
> +vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16mf4(base, vl);
> +}
> +
> +vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
> +  return __riscv_vle16_v_f16m8(base, vl);
> +}
> +
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
> /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
> +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
> /* { dg-final { scan-assembler-times {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> /* { dg-final { scan-assembler-times {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> -
> +/* { dg-final { scan-assembler-times {vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */
> --
> 2.34.1
>
>
  
Kito Cheng June 8, 2023, 1:24 p.m. UTC | #7
I like JuZhe's proposal too since it's a less invasive way :)

On Thu, Jun 8, 2023 at 9:18 PM Li, Pan2 via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> Thanks Juzhe for the idea. It looks work well as we expected, with the following try.
>
>
>   1.  Allow all FP=16 types for vfadd, then _zvfh and _zvfhmin will be OK.
>   2.  Add restriction define_attr as juzhe mentioned, then _zvfh works well, and _zvfhmin will meet error like unsatisfied insn.
>
> I think only we need to do is the define_attr, and there will be no changes to vector.md. If no more concern, will have a try for this approach.
>
> Pan
>
> From: juzhe.zhong@rivai.ai <juzhe.zhong@rivai.ai>
> Sent: Thursday, June 8, 2023 4:32 PM
> To: kito.cheng <kito.cheng@gmail.com>
> Cc: Li, Pan2 <pan2.li@intel.com>; gcc-patches <gcc-patches@gcc.gnu.org>; Robin Dapp <rdapp.gcc@gmail.com>; jeffreyalaw <jeffreyalaw@gmail.com>; Wang, Yanzhang <yanzhang.wang@intel.com>
> Subject: Re: Re: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
>
> I have an idea base on what Kito said.
> We enable vfadd FP16 for TARGET_ZVFH. But we don't need to add TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>
> for each instruction.
>
> We can reference riscv.md:
> (define_attr "ext_enabled" "no,yes"
>   (cond [(eq_attr "ext" "base")
>    (const_string "yes")
>
>    (and (eq_attr "ext" "f")
>         (match_test "TARGET_HARD_FLOAT"))
>    (const_string "yes")
>
>    (and (eq_attr "ext" "d")
>         (match_test "TARGET_DOUBLE_FLOAT"))
>    (const_string "yes")
>
>    (and (eq_attr "ext" "vector")
>         (match_test "TARGET_VECTOR"))
>    (const_string "yes")
>   ]
>   (const_string "no")))
>
> Define a new attribute as follows:
> (define_attr "fp16_vector_enabled" "no,yes"
>   (cond [
>    (and (eq_attr "type" "vfalu")
>          (and eq_attr "mode" "VNx1HF")
>             (match_test "!TARGET_ZVFH")))
>    (const_string "no")
>   ]
>   (const_string "yes")))
>
>
> I think you can do experiment with this to see whether it can disable MD pattern.
>
> ________________________________
> juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>
>
> From: Kito Cheng<mailto:kito.cheng@gmail.com>
> Date: 2023-06-08 15:58
> To: juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>
> CC: pan2.li<mailto:pan2.li@intel.com>; gcc-patches<mailto:gcc-patches@gcc.gnu.org>; Robin Dapp<mailto:rdapp.gcc@gmail.com>; jeffreyalaw<mailto:jeffreyalaw@gmail.com>; yanzhang.wang<mailto:yanzhang.wang@intel.com>
> Subject: Re: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
> I am thinking, is it possible to use mode attr to remove the overhead
> of checking the mode for other FP modes other than FP16?
>
> e.g.
> (define_mode_attr TARGET_FP_FULL_OPERATION_CHECKING [
>   (VNx1HF "TARGET_ZVFH")
> ...
>   (VNx1SF "1")
> ...
> ])
>
>
>   "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> ->
>   "TARGET_VECTOR && <TARGET_FP_FULL_OPERATION_CHECKING>"
>
>
> On Thu, Jun 8, 2023 at 2:35 PM juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>
> <juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>> wrote:
> >
> > LGTM. Let's wait for Jeff and Robin. After this patch, we can start FP16 autovec.
> >
> >
> >
> > juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>
> >
> > From: pan2.li
> > Date: 2023-06-08 14:29
> > To: gcc-patches
> > CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li; yanzhang.wang; kito.cheng
> > Subject: [PATCH v8] RISC-V: Refactor requirement of ZVFH and ZVFHMIN.
> > From: Pan Li <pan2.li@intel.com<mailto:pan2.li@intel.com>>
> >
> > This patch would like to refactor the requirement of both the ZVFH
> > and ZVFHMIN. By default, the ZVFHMIN will enable FP16 for all the
> > iterators of RVV. And then the ZVFH will leverage one function as
> > the gate for FP16 supported or not.
> >
> > Please note the ZVFH will cover the ZVFHMIN instructions. This patch
> > add one test for this.
> >
> > Signed-off-by: Pan Li <pan2.li@intel.com<mailto:pan2.li@intel.com>>
> > Co-Authored by: Juzhe-Zhong <juzhe.zhong@rivai.ai<mailto:juzhe.zhong@rivai.ai>>
> >
> > gcc/ChangeLog:
> >
> > * config/riscv/riscv-protos.h (float_mode_supported_p):
> > New function to float point is supported by extension.
> > * config/riscv/riscv-v.cc (float_mode_supported_p):
> > Ditto.
> > * config/riscv/vector-iterators.md: Fix V_WHOLE and V_FRACT.
> > * config/riscv/vector.md: Add condition to FP define insn.
> >
> > gcc/testsuite/ChangeLog:
> >
> > * gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c: Add vle16 test
> > for ZVFHMIN.
> > ---
> > gcc/config/riscv/riscv-protos.h               |   1 +
> > gcc/config/riscv/riscv-v.cc                   |  12 ++
> > gcc/config/riscv/vector-iterators.md          |  23 +--
> > gcc/config/riscv/vector.md                    | 144 ++++++++++--------
> > .../riscv/rvv/base/zvfhmin-intrinsic.c        |  15 +-
> > 5 files changed, 118 insertions(+), 77 deletions(-)
> >
> > diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
> > index ebbaac255f9..1f606f59ce1 100644
> > --- a/gcc/config/riscv/riscv-protos.h
> > +++ b/gcc/config/riscv/riscv-protos.h
> > @@ -177,6 +177,7 @@ rtx expand_builtin (unsigned int, tree, rtx);
> > bool check_builtin_call (location_t, vec<location_t>, unsigned int,
> >    tree, unsigned int, tree *);
> > bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
> > +bool float_mode_supported_p (machine_mode mode);
> > bool legitimize_move (rtx, rtx);
> > void emit_vlmax_vsetvl (machine_mode, rtx);
> > void emit_hard_vlmax_vsetvl (machine_mode, rtx);
> > diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
> > index 49752cd8899..fe4eb058ec0 100644
> > --- a/gcc/config/riscv/riscv-v.cc
> > +++ b/gcc/config/riscv/riscv-v.cc
> > @@ -418,6 +418,18 @@ const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
> >   && IN_RANGE (INTVAL (elt), minval, maxval));
> > }
> > +/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
> > +   float point machine mode.  */
> > +bool
> > +float_mode_supported_p (machine_mode mode)
> > +{
> > +  machine_mode inner_mode = GET_MODE_INNER (mode);
> > +
> > +  gcc_assert (FLOAT_MODE_P (inner_mode));
> > +
> > +  return inner_mode == HFmode ? TARGET_ZVFH : true;
> > +}
> > +
> > /* Return true if VEC is a constant in which every element is in the range
> >     [MINVAL, MAXVAL].  The elements do not need to have the same value.
> > diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
> > index f4946d84449..234b712bc9d 100644
> > --- a/gcc/config/riscv/vector-iterators.md
> > +++ b/gcc/config/riscv/vector-iterators.md
> > @@ -453,9 +453,8 @@ (define_mode_iterator V_WHOLE [
> >    (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
> >    (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
> > -  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> > -  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
> > -  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
> > +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")
> > +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
> >    (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
> >    (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
> >    (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> > @@ -477,7 +476,11 @@ (define_mode_iterator V_WHOLE [
> > (define_mode_iterator V_FRACT [
> >    (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
> >    (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") (VNx4HI "TARGET_MIN_VLEN >= 128")
> > -  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") (VNx4HF "TARGET_MIN_VLEN >= 128")
> > +
> > +  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
> > +  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
> > +  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
> > +
> >    (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
> >    (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
> >    (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> > @@ -497,12 +500,12 @@ (define_mode_iterator VWEXTI [
> > ])
> > (define_mode_iterator VWEXTF [
> > -  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> > -  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
> > -  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
> > -  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
> > -  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> > -  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> > +  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
> > +  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> > +  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> > +  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
> > +  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
> > +  (VNx32SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
> >    (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
> >    (VNx2DF "TARGET_VECTOR_ELEN_FP_64")
> > diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
> > index 1d1847bd85a..2fe0233f102 100644
> > --- a/gcc/config/riscv/vector.md
> > +++ b/gcc/config/riscv/vector.md
> > @@ -1364,7 +1364,7 @@ (define_insn "*pred_broadcast<mode>"
> >   (vec_duplicate:VF
> >     (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
> >   (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>
> >     vfmv.v.f\t%0,%3<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>
> >     vfmv.v.f\t%0,%3<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>
> > @@ -5685,7 +5685,7 @@ (define_insn "@pred_<optab><mode<mailto:%22@%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e    %20vfmv.v.f\t%250,%253%0d%3e%20@@%20-5685,7%20+5685,7%20@@%20(define_insn%20%22@pred_%3coptab%3e%3cmode>>"
> >     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
> >     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<insn>.vv\t%0,%3,%4%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5705,7 +5705,7 @@ (define_insn "@pred_<optab><mode>"
> >     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
> >     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<insn>.vv\t%0,%3,%4%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5728,7 +5728,7 @@ (define_insn "@pred_<optab><mode>_scalar"
> >       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
> >     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<insn>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5749,7 +5749,7 @@ (define_insn "@pred_<optab><mode>_scalar"
> >       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
> >     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<insn>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5772,7 +5772,7 @@ (define_insn "@pred_<optab><mode>_scalar"
> >     (vec_duplicate:VF
> >       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<insn>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5795,7 +5795,7 @@ (define_insn "@pred_<optab><mode>_reverse_scalar"
> >       (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
> >     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfr<insn>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5815,7 +5815,7 @@ (define_insn "@pred_<copysign><mode>"
> >     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
> >      (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfsgnj<nx>.vv\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfsgnj")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5836,7 +5836,7 @@ (define_insn "@pred_<copysign><mode>_scalar"
> >      (vec_duplicate:VF
> >        (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfsgnj<nx>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfsgnj")
> >     (set_attr "mode" "<MODE>")])
> > @@ -5894,7 +5894,7 @@ (define_insn "*pred_<madd_msub><mode>"
> >       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
> >     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
> >   (match_dup 2)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<madd_msub>.vv\t%0,%3,%4%p1
> >     vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
> > @@ -5927,7 +5927,7 @@ (define_insn "*pred_<macc_msac><mode>"
> >       (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
> >     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
> >   (match_dup 4)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<macc_msac>.vv\t%0,%2,%3%p1
> >     vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
> > @@ -5960,7 +5960,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>"
> >       (match_operand:VF 3 "register_operand"     "   vr,   vr"))
> >     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
> >   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> > -  "TARGET_VECTOR
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
> >     && !rtx_equal_p (operands[2], operands[5])
> >     && !rtx_equal_p (operands[3], operands[5])
> >     && !rtx_equal_p (operands[4], operands[5])"
> > @@ -6021,7 +6021,7 @@ (define_insn "*pred_<madd_msub><mode>_scalar"
> >       (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
> >     (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
> >   (match_dup 3)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<madd_msub>.vf\t%0,%2,%4%p1
> >     vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
> > @@ -6055,7 +6055,7 @@ (define_insn "*pred_<macc_msac><mode>_scalar"
> >       (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
> >     (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
> >   (match_dup 4)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<macc_msac>.vf\t%0,%2,%3%p1
> >     vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
> > @@ -6089,7 +6089,7 @@ (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
> >       (match_operand:VF 3 "register_operand"      "   vr,  vr"))
> >     (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
> >   (match_operand:VF 5 "register_operand"          "    0,  vr")))]
> > -  "TARGET_VECTOR
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
> >     && !rtx_equal_p (operands[3], operands[5])
> >     && !rtx_equal_p (operands[4], operands[5])"
> >    "@
> > @@ -6154,7 +6154,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>"
> >         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
> >     (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
> >   (match_dup 2)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
> >     vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
> > @@ -6188,7 +6188,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>"
> >         (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
> >     (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
> >   (match_dup 4)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
> >     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
> > @@ -6222,7 +6222,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
> >         (match_operand:VF 3 "register_operand"     "   vr,   vr")))
> >     (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
> >   (match_operand:VF 5 "register_operand"         "    0,   vr")))]
> > -  "TARGET_VECTOR
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
> >     && !rtx_equal_p (operands[2], operands[5])
> >     && !rtx_equal_p (operands[3], operands[5])
> >     && !rtx_equal_p (operands[4], operands[5])"
> > @@ -6285,7 +6285,7 @@ (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
> >         (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
> >     (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
> >   (match_dup 3)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
> >     vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
> > @@ -6320,7 +6320,7 @@ (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
> >         (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
> >     (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
> >   (match_dup 4)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "@
> >     vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
> >     vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
> > @@ -6355,7 +6355,7 @@ (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
> >         (match_operand:VF 3 "register_operand"      "   vr,  vr")))
> >     (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
> >   (match_operand:VF 5 "register_operand"            "    0,  vr")))]
> > -  "TARGET_VECTOR
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
> >     && !rtx_equal_p (operands[3], operands[5])
> >     && !rtx_equal_p (operands[4], operands[5])"
> >    "@
> > @@ -6399,7 +6399,7 @@ (define_insn "@pred_<optab><mode>"
> >   (any_float_unop:VF
> >     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<insn>.v\t%0,%3%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")
> > @@ -6422,7 +6422,7 @@ (define_insn "@pred_<optab><mode>"
> >   (any_float_unop_nofrm:VF
> >     (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<insn>.v\t%0,%3%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")
> > @@ -6445,7 +6445,7 @@ (define_insn "@pred_<misc_op><mode>"
> >   (unspec:VF
> >     [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
> >   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vf<misc_op>.v\t%0,%3%p1"
> >    [(set_attr "type" "<float_insn_type>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6464,7 +6464,7 @@ (define_insn "@pred_class<mode>"
> >   (unspec:<VCONVERT>
> >     [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
> >   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfclass.v\t%0,%3%p1"
> >    [(set_attr "type" "vfclass")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6497,7 +6497,7 @@ (define_insn "@pred_dual_widen_<optab><mode>"
> >     (float_extend:VWEXTF
> >       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
> >   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<insn>.vv\t%0,%3,%4%p1"
> >    [(set_attr "type" "vf<widen_binop_insn_type>")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6522,7 +6522,7 @@ (define_insn "@pred_dual_widen_<optab><mode>_scalar"
> >       (vec_duplicate:<V_DOUBLE_TRUNC>
> > (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
> >   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<insn>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "vf<widen_binop_insn_type>")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6545,7 +6545,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
> >     (float_extend:VWEXTF
> >       (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
> >   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<insn>.wv\t%0,%3,%4%p1"
> >    [(set_attr "type" "vf<widen_binop_insn_type>")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6569,7 +6569,7 @@ (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
> >       (vec_duplicate:<V_DOUBLE_TRUNC>
> > (match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
> >   (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<insn>.wf\t%0,%3,%4%p1"
> >    [(set_attr "type" "vf<widen_binop_insn_type>")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6602,7 +6602,7 @@ (define_insn "@pred_widen_mul_<optab><mode>"
> >         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
> >     (match_operand:VWEXTF 2 "register_operand"               "    0"))
> >   (match_dup 2)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<macc_msac>.vv\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfwmuladd")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6629,7 +6629,7 @@ (define_insn "@pred_widen_mul_<optab><mode>_scalar"
> >         (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
> >     (match_operand:VWEXTF 2 "register_operand"               "    0"))
> >   (match_dup 2)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<macc_msac>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfwmuladd")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6656,7 +6656,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>"
> >           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
> >       (match_operand:VWEXTF 2 "register_operand"               "    0"))
> >   (match_dup 2)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfwmuladd")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6684,7 +6684,7 @@ (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
> >           (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
> >     (match_operand:VWEXTF 2 "register_operand"                 "    0"))
> >   (match_dup 2)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfwmuladd")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -6728,7 +6728,8 @@ (define_insn "*pred_cmp<mode>"
> >      [(match_operand:VF 4 "register_operand"          "   vr,   vr")
> >       (match_operand:VF 5 "register_operand"          "   vr,   vr")])
> >   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> > -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> > +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B3.vv\t%0,%4,%5%p1"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6747,7 +6748,7 @@ (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
> >      [(match_operand:VF 3 "register_operand"           " vr")
> >       (match_operand:VF 4 "register_operand"           " vr")])
> >   (match_dup 1)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B2.vv\t%0,%3,%4,v0.t"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")
> > @@ -6771,7 +6772,8 @@ (define_insn "*pred_cmp<mode>_narrow"
> >      [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
> >       (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
> >   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
> > -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> > +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B3.vv\t%0,%4,%5%p1"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6809,7 +6811,7 @@ (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
> >       (vec_duplicate:VF
> >         (match_operand:<VEL> 4 "register_operand"     "  f"))])
> >   (match_dup 1)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B2.vf\t%0,%3,%4,v0.t"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")
> > @@ -6834,7 +6836,8 @@ (define_insn "*pred_cmp<mode>_scalar"
> >       (vec_duplicate:VF
> >         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
> >   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> > -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> > +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B3.vf\t%0,%4,%5%p1"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6855,7 +6858,8 @@ (define_insn "*pred_cmp<mode>_scalar_narrow"
> >       (vec_duplicate:VF
> >         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
> >   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> > -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> > +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B3.vf\t%0,%4,%5%p1"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6893,7 +6897,7 @@ (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
> >         (match_operand:<VEL> 4 "register_operand"     "  f"))
> >       (match_operand:VF 3 "register_operand"          " vr")])
> >   (match_dup 1)))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B2.vf\t%0,%3,%4,v0.t"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")
> > @@ -6918,7 +6922,8 @@ (define_insn "*pred_eqne<mode>_scalar"
> >         (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
> >       (match_operand:VF 4 "register_operand"          "   vr,   vr")])
> >   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
> > -  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> > +  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B3.vf\t%0,%4,%5%p1"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6939,7 +6944,8 @@ (define_insn "*pred_eqne<mode>_scalar_narrow"
> >         (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
> >       (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
> >   (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
> > -  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
> > +  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vmf%B3.vf\t%0,%4,%5%p1"
> >    [(set_attr "type" "vfcmp")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6966,7 +6972,7 @@ (define_insn "@pred_merge<mode>_scalar"
> >          (match_operand:VF 2 "register_operand"      " vr,vr")
> > (match_operand:<VM> 4 "register_operand"    " vm,vm"))
> >        (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfmerge.vfm\t%0,%2,%3,%4"
> >    [(set_attr "type" "vfmerge")
> >     (set_attr "mode" "<MODE>")])
> > @@ -6994,7 +7000,7 @@ (define_insn "@pred_fcvt_x<v_su>_f<mode>"
> >   (unspec:<VCONVERT>
> >      [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
> >   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfcvt.x<v_su>.f.v\t%0,%3%p1"
> >    [(set_attr "type" "vfcvtftoi")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7013,7 +7019,7 @@ (define_insn "@pred_<fix_cvt><mode>"
> >   (any_fix:<VCONVERT>
> >      (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
> >   (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
> >    [(set_attr "type" "vfcvtftoi")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7034,7 +7040,7 @@ (define_insn "@pred_<float_cvt><mode>"
> >   (any_float:VF
> >      (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
> >   (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfcvt.f.x<u>.v\t%0,%3%p1"
> >    [(set_attr "type" "vfcvtitof")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7062,7 +7068,7 @@ (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
> >   (unspec:VWCONVERTI
> >      [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
> >   (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
> >    "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
> >    [(set_attr "type" "vfwcvtftoi")
> >     (set_attr "mode" "<VNCONVERT>")])
> > @@ -7081,7 +7087,7 @@ (define_insn "@pred_widen_<fix_cvt><mode>"
> >   (any_fix:VWCONVERTI
> >      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
> >   (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
> >    "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
> >    [(set_attr "type" "vfwcvtftoi")
> >     (set_attr "mode" "<VNCONVERT>")])
> > @@ -7100,7 +7106,7 @@ (define_insn "@pred_widen_<float_cvt><mode>"
> >   (any_float:VF
> >      (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
> >   (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfwcvt.f.x<u>.v\t%0,%3%p1"
> >    [(set_attr "type" "vfwcvtitof")
> >     (set_attr "mode" "<VNCONVERT>")])
> > @@ -7119,7 +7125,7 @@ (define_insn "@pred_extend<mode>"
> >   (float_extend:VWEXTF
> >      (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
> >   (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfwcvt.f.f.v\t%0,%3%p1"
> >    [(set_attr "type" "vfwcvtftof")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -7147,7 +7153,7 @@ (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
> >   (unspec:<VNCONVERT>
> >      [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
> >   (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfncvt.x<v_su>.f.w\t%0,%3%p1"
> >    [(set_attr "type" "vfncvtftoi")
> >     (set_attr "mode" "<VNCONVERT>")])
> > @@ -7166,7 +7172,7 @@ (define_insn "@pred_narrow_<fix_cvt><mode>"
> >   (any_fix:<VNCONVERT>
> >      (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
> >   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
> >    "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
> >    [(set_attr "type" "vfncvtftoi")
> >     (set_attr "mode" "<VNCONVERT>")])
> > @@ -7187,7 +7193,7 @@ (define_insn "@pred_narrow_<float_cvt><mode>"
> >   (any_float:<VNCONVERT>
> >      (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
> >   (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
> >    "vfncvt.f.x<u>.w\t%0,%3%p1"
> >    [(set_attr "type" "vfncvtitof")
> >     (set_attr "mode" "<VNCONVERT>")])
> > @@ -7208,7 +7214,7 @@ (define_insn "@pred_trunc<mode>"
> >   (float_truncate:<V_DOUBLE_TRUNC>
> >      (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
> >   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfncvt.f.f.w\t%0,%3%p1"
> >    [(set_attr "type" "vfncvtftof")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -7228,7 +7234,7 @@ (define_insn "@pred_rod_trunc<mode>"
> >     [(float_truncate:<V_DOUBLE_TRUNC>
> >        (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
> >   (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
> >    "vfncvt.rod.f.f.w\t%0,%3%p1"
> >    [(set_attr "type" "vfncvtftof")
> >     (set_attr "mode" "<V_DOUBLE_TRUNC>")])
> > @@ -7389,7 +7395,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
> >          (parallel [(const_int 0)])))
> >      (match_operand:VF 3 "register_operand"           "   vr,   vr"))
> >    (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfred<reduc>.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfredu")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7413,7 +7420,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
> >          (parallel [(const_int 0)])))
> >      (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
> >    (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfred<reduc>.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfredu")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7437,7 +7445,8 @@ (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
> >          (parallel [(const_int 0)])))
> >      (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
> >    (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfred<reduc>.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfredu")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7462,7 +7471,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
> >            (parallel [(const_int 0)])))
> >        (match_operand:VF 3 "register_operand"           "   vr,   vr"))
> >      (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfred<order>sum.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfred<order>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7487,7 +7497,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
> >            (parallel [(const_int 0)])))
> >        (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
> >      (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfred<order>sum.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfred<order>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7512,7 +7523,8 @@ (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
> >            (parallel [(const_int 0)])))
> >        (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
> >      (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfred<order>sum.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfred<order>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7533,7 +7545,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
> >      (match_operand:VWF 3 "register_operand"             "   vr,   vr")
> >      (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
> >      (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfwred<order>sum.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfwred<order>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7554,7 +7567,8 @@ (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
> >      (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
> >      (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
> >      (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
> > -  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
> > +  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
> > +    && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfwred<order>sum.vs\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfwred<order>")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7657,7 +7671,7 @@ (define_insn "*pred_extract_first<mode>"
> >      (match_operand:VF 1 "register_operand" "vr")
> >      (parallel [(const_int 0)]))
> >    (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfmv.f.s\t%0,%1"
> >    [(set_attr "type" "vfmovvf")
> >     (set_attr "mode" "<MODE>")])
> > @@ -7778,7 +7792,7 @@ (define_insn "@pred_slide<ud><mode>"
> >    (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
> >    (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
> >    (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
> > -  "TARGET_VECTOR"
> > +  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
> >    "vfslide<ud>.vf\t%0,%3,%4%p1"
> >    [(set_attr "type" "vfslide<ud>")
> >     (set_attr "mode" "<MODE>")])
> > diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> > index 0923b6bc4d2..f1a29b639e0 100644
> > --- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> > +++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
> > @@ -3,6 +3,8 @@
> > #include "riscv_vector.h"
> > +typedef _Float16 float16_t;
> > +
> > vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
> >    return __riscv_vfncvt_f_f_w_f16mf4(src, vl);
> > }
> > @@ -43,11 +45,20 @@ vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
> >    return __riscv_vfwcvt_f_f_v_f32m8(src, vl);
> > }
> > -/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
> > +vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
> > +  return __riscv_vle16_v_f16mf4(base, vl);
> > +}
> > +
> > +vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
> > +  return __riscv_vle16_v_f16m8(base, vl);
> > +}
> > +
> > +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } */
> > /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
> > /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
> > /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
> > /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
> > +/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
> > /* { dg-final { scan-assembler-times {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> > /* { dg-final { scan-assembler-times {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
> > -
> > +/* { dg-final { scan-assembler-times {vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */
> > --
> > 2.34.1
> >
> >
>
  

Patch

diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
index ebbaac255f9..1f606f59ce1 100644
--- a/gcc/config/riscv/riscv-protos.h
+++ b/gcc/config/riscv/riscv-protos.h
@@ -177,6 +177,7 @@  rtx expand_builtin (unsigned int, tree, rtx);
 bool check_builtin_call (location_t, vec<location_t>, unsigned int,
 			   tree, unsigned int, tree *);
 bool const_vec_all_same_in_range_p (rtx, HOST_WIDE_INT, HOST_WIDE_INT);
+bool float_mode_supported_p (machine_mode mode);
 bool legitimize_move (rtx, rtx);
 void emit_vlmax_vsetvl (machine_mode, rtx);
 void emit_hard_vlmax_vsetvl (machine_mode, rtx);
diff --git a/gcc/config/riscv/riscv-v.cc b/gcc/config/riscv/riscv-v.cc
index 49752cd8899..fe4eb058ec0 100644
--- a/gcc/config/riscv/riscv-v.cc
+++ b/gcc/config/riscv/riscv-v.cc
@@ -418,6 +418,18 @@  const_vec_all_same_in_range_p (rtx x, HOST_WIDE_INT minval,
 	  && IN_RANGE (INTVAL (elt), minval, maxval));
 }
 
+/* Return true if the inner of mode is HFmode when ZVFH enabled, or other
+   float point machine mode.  */
+bool
+float_mode_supported_p (machine_mode mode)
+{
+  machine_mode inner_mode = GET_MODE_INNER (mode);
+
+  gcc_assert (FLOAT_MODE_P (inner_mode));
+
+  return inner_mode == HFmode ? TARGET_ZVFH : true;
+}
+
 /* Return true if VEC is a constant in which every element is in the range
    [MINVAL, MAXVAL].  The elements do not need to have the same value.
 
diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
index f4946d84449..234b712bc9d 100644
--- a/gcc/config/riscv/vector-iterators.md
+++ b/gcc/config/riscv/vector-iterators.md
@@ -453,9 +453,8 @@  (define_mode_iterator V_WHOLE [
   (VNx1DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN < 128") (VNx2DI "TARGET_VECTOR_ELEN_64")
   (VNx4DI "TARGET_VECTOR_ELEN_64") (VNx8DI "TARGET_VECTOR_ELEN_64") (VNx16DI "TARGET_VECTOR_ELEN_64 && TARGET_MIN_VLEN >= 128")
 
-  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
-  (VNx2HF "TARGET_VECTOR_ELEN_FP_16")
-  (VNx4HF "TARGET_VECTOR_ELEN_FP_16")
+  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 32")
+  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN == 64")
   (VNx8HF "TARGET_VECTOR_ELEN_FP_16")
   (VNx16HF "TARGET_VECTOR_ELEN_FP_16")
   (VNx32HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
@@ -477,7 +476,11 @@  (define_mode_iterator V_WHOLE [
 (define_mode_iterator V_FRACT [
   (VNx1QI "TARGET_MIN_VLEN < 128") VNx2QI (VNx4QI "TARGET_MIN_VLEN > 32") (VNx8QI "TARGET_MIN_VLEN >= 128")
   (VNx1HI "TARGET_MIN_VLEN < 128") (VNx2HI "TARGET_MIN_VLEN > 32") (VNx4HI "TARGET_MIN_VLEN >= 128")
-  (VNx1HF "TARGET_MIN_VLEN < 128") (VNx2HF "TARGET_MIN_VLEN > 32") (VNx4HF "TARGET_MIN_VLEN >= 128")
+
+  (VNx1HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN < 128")
+  (VNx2HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN > 32")
+  (VNx4HF "TARGET_VECTOR_ELEN_FP_16 && TARGET_MIN_VLEN >= 128")
+
   (VNx1SI "TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128") (VNx2SI "TARGET_MIN_VLEN >= 128")
   (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32 && TARGET_MIN_VLEN < 128")
   (VNx2SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
@@ -497,12 +500,12 @@  (define_mode_iterator VWEXTI [
 ])
 
 (define_mode_iterator VWEXTF [
-  (VNx1SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
-  (VNx2SF "TARGET_VECTOR_ELEN_FP_32")
-  (VNx4SF "TARGET_VECTOR_ELEN_FP_32")
-  (VNx8SF "TARGET_VECTOR_ELEN_FP_32")
-  (VNx16SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
-  (VNx32SF "TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
+  (VNx1SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN < 128")
+  (VNx2SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
+  (VNx4SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
+  (VNx8SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32")
+  (VNx16SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN > 32")
+  (VNx32SF "TARGET_VECTOR_ELEN_FP_16 && TARGET_VECTOR_ELEN_FP_32 && TARGET_MIN_VLEN >= 128")
 
   (VNx1DF "TARGET_VECTOR_ELEN_FP_64 && TARGET_MIN_VLEN < 128")
   (VNx2DF "TARGET_VECTOR_ELEN_FP_64")
diff --git a/gcc/config/riscv/vector.md b/gcc/config/riscv/vector.md
index 1d1847bd85a..2fe0233f102 100644
--- a/gcc/config/riscv/vector.md
+++ b/gcc/config/riscv/vector.md
@@ -1364,7 +1364,7 @@  (define_insn "*pred_broadcast<mode>"
 	  (vec_duplicate:VF
 	    (match_operand:<VEL> 3 "direct_broadcast_operand"       " f,  f,Wdm,Wdm,Wdm,Wdm,  f,  f"))
 	  (match_operand:VF 2 "vector_merge_operand"                "vu,  0, vu,  0, vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vfmv.v.f\t%0,%3
    vfmv.v.f\t%0,%3
@@ -5685,7 +5685,7 @@  (define_insn "@pred_<optab><mode>"
 	    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
 	    (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5705,7 +5705,7 @@  (define_insn "@pred_<optab><mode>"
 	    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
 	    (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5728,7 +5728,7 @@  (define_insn "@pred_<optab><mode>_scalar"
 	      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
 	    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5749,7 +5749,7 @@  (define_insn "@pred_<optab><mode>_scalar"
 	      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
 	    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5772,7 +5772,7 @@  (define_insn "@pred_<optab><mode>_scalar"
 	    (vec_duplicate:VF
 	      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f")))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5795,7 +5795,7 @@  (define_insn "@pred_<optab><mode>_reverse_scalar"
 	      (match_operand:<VEL> 4 "register_operand"  "  f,  f,  f,  f"))
 	    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfr<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -5815,7 +5815,7 @@  (define_insn "@pred_<copysign><mode>"
 	    [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")
 	     (match_operand:VF 4 "register_operand"       " vr, vr, vr, vr")] VCOPYSIGNS)
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfsgnj<nx>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vfsgnj")
    (set_attr "mode" "<MODE>")])
@@ -5836,7 +5836,7 @@  (define_insn "@pred_<copysign><mode>_scalar"
 	     (vec_duplicate:VF
 	       (match_operand:<VEL> 4 "register_operand" "  f,  f,  f,  f"))] VCOPYSIGNS)
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfsgnj<nx>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfsgnj")
    (set_attr "mode" "<MODE>")])
@@ -5894,7 +5894,7 @@  (define_insn "*pred_<madd_msub><mode>"
 	      (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
 	    (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
 	  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<madd_msub>.vv\t%0,%3,%4%p1
    vmv.v.v\t%0,%2\;vf<madd_msub>.vv\t%0,%3,%4%p1
@@ -5927,7 +5927,7 @@  (define_insn "*pred_<macc_msac><mode>"
 	      (match_operand:VF 3 "register_operand"     " vr,   vr, vr,   vr"))
 	    (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
 	  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<macc_msac>.vv\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<macc_msac>.vv\t%0,%2,%3%p1
@@ -5960,7 +5960,7 @@  (define_insn_and_rewrite "*pred_mul_<optab><mode>"
 	      (match_operand:VF 3 "register_operand"     "   vr,   vr"))
 	    (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
 	  (match_operand:VF 5 "register_operand"         "    0,   vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[2], operands[5])
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
@@ -6021,7 +6021,7 @@  (define_insn "*pred_<madd_msub><mode>_scalar"
 	      (match_operand:VF 3 "register_operand"      "  0, vr,    0,   vr"))
 	    (match_operand:VF 4 "register_operand"        " vr, vr,   vr,   vr"))
 	  (match_dup 3)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<madd_msub>.vf\t%0,%2,%4%p1
    vmv.v.v\t%0,%3\;vf<madd_msub>.vf\t%0,%2,%4%p1
@@ -6055,7 +6055,7 @@  (define_insn "*pred_<macc_msac><mode>_scalar"
 	      (match_operand:VF 3 "register_operand"      " vr, vr,   vr,   vr"))
 	    (match_operand:VF 4 "register_operand"        "  0, vr,    0,   vr"))
 	  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<macc_msac>.vf\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<macc_msac>.vf\t%0,%2,%3%p1
@@ -6089,7 +6089,7 @@  (define_insn_and_rewrite "*pred_mul_<optab><mode>_scalar"
 	      (match_operand:VF 3 "register_operand"      "   vr,  vr"))
 	    (match_operand:VF 4 "vector_arith_operand"    "   vr,  vr"))
 	  (match_operand:VF 5 "register_operand"          "    0,  vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
   "@
@@ -6154,7 +6154,7 @@  (define_insn "*pred_<nmsub_nmadd><mode>"
 	        (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
 	    (match_operand:VF 4 "register_operand"       " vr,   vr, vr,   vr"))
 	  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
    vmv.v.v\t%0,%2\;vf<nmsub_nmadd>.vv\t%0,%3,%4%p1
@@ -6188,7 +6188,7 @@  (define_insn "*pred_<nmsac_nmacc><mode>"
 	        (match_operand:VF 3 "register_operand"   " vr,   vr, vr,   vr")))
 	    (match_operand:VF 4 "register_operand"       "  0,   vr,  0,   vr"))
 	  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vv\t%0,%2,%3%p1
@@ -6222,7 +6222,7 @@  (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>"
 	        (match_operand:VF 3 "register_operand"     "   vr,   vr")))
 	    (match_operand:VF 4 "vector_arith_operand"   "   vr,   vr"))
 	  (match_operand:VF 5 "register_operand"         "    0,   vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[2], operands[5])
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
@@ -6285,7 +6285,7 @@  (define_insn "*pred_<nmsub_nmadd><mode>_scalar"
 	        (match_operand:VF 3 "register_operand"      "  0,   vr,  0,   vr")))
 	    (match_operand:VF 4 "register_operand"          " vr,   vr, vr,   vr"))
 	  (match_dup 3)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
    vmv.v.v\t%0,%3\;vf<nmsub_nmadd>.vf\t%0,%2,%4%p1
@@ -6320,7 +6320,7 @@  (define_insn "*pred_<nmsac_nmacc><mode>_scalar"
 	        (match_operand:VF 3 "register_operand"      " vr,   vr, vr,   vr")))
 	    (match_operand:VF 4 "register_operand"          "  0,   vr,  0,   vr"))
 	  (match_dup 4)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "@
    vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
    vmv.v.v\t%0,%4\;vf<nmsac_nmacc>.vf\t%0,%2,%3%p1
@@ -6355,7 +6355,7 @@  (define_insn_and_rewrite "*pred_mul_neg_<optab><mode>_scalar"
 	        (match_operand:VF 3 "register_operand"      "   vr,  vr")))
 	    (match_operand:VF 4 "vector_arith_operand"      "   vr,  vr"))
 	  (match_operand:VF 5 "register_operand"            "    0,  vr")))]
-  "TARGET_VECTOR
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)
    && !rtx_equal_p (operands[3], operands[5])
    && !rtx_equal_p (operands[4], operands[5])"
   "@
@@ -6399,7 +6399,7 @@  (define_insn "@pred_<optab><mode>"
 	  (any_float_unop:VF
 	    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.v\t%0,%3%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")
@@ -6422,7 +6422,7 @@  (define_insn "@pred_<optab><mode>"
 	  (any_float_unop_nofrm:VF
 	    (match_operand:VF 3 "register_operand"       " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<insn>.v\t%0,%3%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")
@@ -6445,7 +6445,7 @@  (define_insn "@pred_<misc_op><mode>"
 	  (unspec:VF
 	    [(match_operand:VF 3 "register_operand"       " vr, vr, vr, vr")] VFMISC)
 	  (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vf<misc_op>.v\t%0,%3%p1"
   [(set_attr "type" "<float_insn_type>")
    (set_attr "mode" "<MODE>")])
@@ -6464,7 +6464,7 @@  (define_insn "@pred_class<mode>"
 	  (unspec:<VCONVERT>
 	    [(match_operand:VF 3 "register_operand"          " vr, vr, vr, vr")] UNSPEC_VFCLASS)
 	  (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfclass.v\t%0,%3%p1"
   [(set_attr "type" "vfclass")
    (set_attr "mode" "<MODE>")])
@@ -6497,7 +6497,7 @@  (define_insn "@pred_dual_widen_<optab><mode>"
 	    (float_extend:VWEXTF
 	      (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
 	  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6522,7 +6522,7 @@  (define_insn "@pred_dual_widen_<optab><mode>_scalar"
 	      (vec_duplicate:<V_DOUBLE_TRUNC>
 		(match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
 	  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6545,7 +6545,7 @@  (define_insn "@pred_single_widen_<plus_minus:optab><mode>"
 	    (float_extend:VWEXTF
 	      (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr,   vr")))
 	  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.wv\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6569,7 +6569,7 @@  (define_insn "@pred_single_widen_<plus_minus:optab><mode>_scalar"
 	      (vec_duplicate:<V_DOUBLE_TRUNC>
 		(match_operand:<VSUBEL> 4 "register_operand"       "    f,    f"))))
 	  (match_operand:VWEXTF 2 "vector_merge_operand"           "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<insn>.wf\t%0,%3,%4%p1"
   [(set_attr "type" "vf<widen_binop_insn_type>")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6602,7 +6602,7 @@  (define_insn "@pred_widen_mul_<optab><mode>"
 	        (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
 	    (match_operand:VWEXTF 2 "register_operand"               "    0"))
 	  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<macc_msac>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6629,7 +6629,7 @@  (define_insn "@pred_widen_mul_<optab><mode>_scalar"
 	        (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr")))
 	    (match_operand:VWEXTF 2 "register_operand"               "    0"))
 	  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<macc_msac>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6656,7 +6656,7 @@  (define_insn "@pred_widen_mul_neg_<optab><mode>"
 	          (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
 	      (match_operand:VWEXTF 2 "register_operand"               "    0"))
 	  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<nmsac_nmacc>.vv\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6684,7 +6684,7 @@  (define_insn "@pred_widen_mul_neg_<optab><mode>_scalar"
 	          (match_operand:<V_DOUBLE_TRUNC> 4 "register_operand" "   vr"))))
 	    (match_operand:VWEXTF 2 "register_operand"                 "    0"))
 	  (match_dup 2)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfw<nmsac_nmacc>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfwmuladd")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -6728,7 +6728,8 @@  (define_insn "*pred_cmp<mode>"
 	     [(match_operand:VF 4 "register_operand"          "   vr,   vr")
 	      (match_operand:VF 5 "register_operand"          "   vr,   vr")])
 	  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
-  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vv\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6747,7 +6748,7 @@  (define_insn "*pred_cmp<mode>_narrow_merge_tie_mask"
 	     [(match_operand:VF 3 "register_operand"           " vr")
 	      (match_operand:VF 4 "register_operand"           " vr")])
 	  (match_dup 1)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B2.vv\t%0,%3,%4,v0.t"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")
@@ -6771,7 +6772,8 @@  (define_insn "*pred_cmp<mode>_narrow"
 	     [(match_operand:VF 4 "register_operand"          "   vr,    0,   vr,    0,    0,   vr,    0,   vr,   vr")
 	      (match_operand:VF 5 "register_operand"          "   vr,   vr,    0,    0,   vr,    0,    0,   vr,   vr")])
 	  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,   vu,   vu,    0,    0,    0,   vu,    0")))]
-  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vv\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6809,7 +6811,7 @@  (define_insn "*pred_cmp<mode>_scalar_merge_tie_mask"
 	      (vec_duplicate:VF
 	        (match_operand:<VEL> 4 "register_operand"     "  f"))])
 	  (match_dup 1)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B2.vf\t%0,%3,%4,v0.t"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")
@@ -6834,7 +6836,8 @@  (define_insn "*pred_cmp<mode>_scalar"
 	      (vec_duplicate:VF
 	        (match_operand:<VEL> 5 "register_operand"     "    f,    f"))])
 	  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
-  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6855,7 +6858,8 @@  (define_insn "*pred_cmp<mode>_scalar_narrow"
 	      (vec_duplicate:VF
 	        (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))])
 	  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
-  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6893,7 +6897,7 @@  (define_insn "*pred_eqne<mode>_scalar_merge_tie_mask"
 	        (match_operand:<VEL> 4 "register_operand"     "  f"))
 	      (match_operand:VF 3 "register_operand"          " vr")])
 	  (match_dup 1)))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B2.vf\t%0,%3,%4,v0.t"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")
@@ -6918,7 +6922,8 @@  (define_insn "*pred_eqne<mode>_scalar"
 	        (match_operand:<VEL> 5 "register_operand"     "    f,    f"))
 	      (match_operand:VF 4 "register_operand"          "   vr,   vr")])
 	  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,    0")))]
-  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_le (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6939,7 +6944,8 @@  (define_insn "*pred_eqne<mode>_scalar_narrow"
 	        (match_operand:<VEL> 5 "register_operand"     "    f,    f,    f,    f,    f"))
 	      (match_operand:VF 4 "register_operand"          "   vr,    0,    0,   vr,   vr")])
 	  (match_operand:<VM> 2 "vector_merge_operand"        "   vu,   vu,    0,   vu,    0")))]
-  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)"
+  "TARGET_VECTOR && known_gt (GET_MODE_SIZE (<MODE>mode), BYTES_PER_RISCV_VECTOR)
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vmf%B3.vf\t%0,%4,%5%p1"
   [(set_attr "type" "vfcmp")
    (set_attr "mode" "<MODE>")])
@@ -6966,7 +6972,7 @@  (define_insn "@pred_merge<mode>_scalar"
         (match_operand:VF 2 "register_operand"      " vr,vr")
 	(match_operand:<VM> 4 "register_operand"    " vm,vm"))
       (match_operand:VF 1 "vector_merge_operand"    " vu, 0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfmerge.vfm\t%0,%2,%3,%4"
   [(set_attr "type" "vfmerge")
    (set_attr "mode" "<MODE>")])
@@ -6994,7 +7000,7 @@  (define_insn "@pred_fcvt_x<v_su>_f<mode>"
 	  (unspec:<VCONVERT>
 	     [(match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")] VFCVTS)
 	  (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfcvt.x<v_su>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfcvtftoi")
    (set_attr "mode" "<MODE>")])
@@ -7013,7 +7019,7 @@  (define_insn "@pred_<fix_cvt><mode>"
 	  (any_fix:<VCONVERT>
 	     (match_operand:VF 3 "register_operand"          " vr, vr, vr, vr"))
 	  (match_operand:<VCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfcvt.rtz.x<u>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfcvtftoi")
    (set_attr "mode" "<MODE>")])
@@ -7034,7 +7040,7 @@  (define_insn "@pred_<float_cvt><mode>"
 	  (any_float:VF
 	     (match_operand:<VCONVERT> 3 "register_operand" " vr, vr, vr, vr"))
 	  (match_operand:VF 2 "vector_merge_operand"        " vu,  0, vu,  0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfcvt.f.x<u>.v\t%0,%3%p1"
   [(set_attr "type" "vfcvtitof")
    (set_attr "mode" "<MODE>")])
@@ -7062,7 +7068,7 @@  (define_insn "@pred_widen_fcvt_x<v_su>_f<mode>"
 	  (unspec:VWCONVERTI
 	     [(match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr")] VFCVTS)
 	  (match_operand:VWCONVERTI 2 "vector_merge_operand"  "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfwcvt.x<v_su>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7081,7 +7087,7 @@  (define_insn "@pred_widen_<fix_cvt><mode>"
 	  (any_fix:VWCONVERTI
 	     (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
 	  (match_operand:VWCONVERTI 2 "vector_merge_operand" "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfwcvt.rtz.x<u>.f.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7100,7 +7106,7 @@  (define_insn "@pred_widen_<float_cvt><mode>"
 	  (any_float:VF
 	     (match_operand:<VNCONVERT> 3 "register_operand" "   vr,   vr"))
 	  (match_operand:VF 2 "vector_merge_operand"         "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwcvt.f.x<u>.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtitof")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7119,7 +7125,7 @@  (define_insn "@pred_extend<mode>"
 	  (float_extend:VWEXTF
 	     (match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" "   vr,   vr"))
 	  (match_operand:VWEXTF 2 "vector_merge_operand"          "   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwcvt.f.f.v\t%0,%3%p1"
   [(set_attr "type" "vfwcvtftof")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -7147,7 +7153,7 @@  (define_insn "@pred_narrow_fcvt_x<v_su>_f<mode>"
 	  (unspec:<VNCONVERT>
 	     [(match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr")] VFCVTS)
 	  (match_operand:<VNCONVERT> 2 "vector_merge_operand"  " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfncvt.x<v_su>.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7166,7 +7172,7 @@  (define_insn "@pred_narrow_<fix_cvt><mode>"
 	  (any_fix:<VNCONVERT>
 	     (match_operand:VF 3 "register_operand"           "  0,  0,  0,  0,   vr,   vr"))
 	  (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfncvt.rtz.x<u>.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftoi")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7187,7 +7193,7 @@  (define_insn "@pred_narrow_<float_cvt><mode>"
 	  (any_float:<VNCONVERT>
 	     (match_operand:VWCONVERTI 3 "register_operand"   "  0,  0,  0,  0,   vr,   vr"))
 	  (match_operand:<VNCONVERT> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<VNCONVERT>mode)"
   "vfncvt.f.x<u>.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtitof")
    (set_attr "mode" "<VNCONVERT>")])
@@ -7208,7 +7214,7 @@  (define_insn "@pred_trunc<mode>"
 	  (float_truncate:<V_DOUBLE_TRUNC>
 	     (match_operand:VWEXTF 3 "register_operand"            "  0,  0,  0,  0,   vr,   vr"))
 	  (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfncvt.f.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftof")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -7228,7 +7234,7 @@  (define_insn "@pred_rod_trunc<mode>"
 	    [(float_truncate:<V_DOUBLE_TRUNC>
 	       (match_operand:VWEXTF 3 "register_operand"          "  0,  0,  0,  0,   vr,   vr"))] UNSPEC_ROD)
 	  (match_operand:<V_DOUBLE_TRUNC> 2 "vector_merge_operand" " vu,  0, vu,  0,   vu,    0")))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<V_DOUBLE_TRUNC>mode)"
   "vfncvt.rod.f.f.w\t%0,%3%p1"
   [(set_attr "type" "vfncvtftof")
    (set_attr "mode" "<V_DOUBLE_TRUNC>")])
@@ -7389,7 +7395,8 @@  (define_insn "@pred_reduc_<reduc><mode><vlmul1>"
 	         (parallel [(const_int 0)])))
 	     (match_operand:VF 3 "register_operand"           "   vr,   vr"))
 	   (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
+  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<reduc>.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfredu")
    (set_attr "mode" "<MODE>")])
@@ -7413,7 +7420,8 @@  (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve64>"
 	         (parallel [(const_int 0)])))
 	     (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
 	   (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<reduc>.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfredu")
    (set_attr "mode" "<MODE>")])
@@ -7437,7 +7445,8 @@  (define_insn "@pred_reduc_<reduc><mode><vlmul1_zve32>"
 	         (parallel [(const_int 0)])))
 	     (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
 	   (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<reduc>.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfredu")
    (set_attr "mode" "<MODE>")])
@@ -7462,7 +7471,8 @@  (define_insn "@pred_reduc_plus<order><mode><vlmul1>"
 	           (parallel [(const_int 0)])))
 	       (match_operand:VF 3 "register_operand"           "   vr,   vr"))
 	     (match_operand:<VLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
+  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7487,7 +7497,8 @@  (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve64>"
 	           (parallel [(const_int 0)])))
 	       (match_operand:VF_ZVE64 3 "register_operand"           "   vr,   vr"))
 	     (match_operand:<VLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_REDUC)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7512,7 +7523,8 @@  (define_insn "@pred_reduc_plus<order><mode><vlmul1_zve32>"
 	           (parallel [(const_int 0)])))
 	       (match_operand:VF_ZVE32 3 "register_operand"           " vr, vr, vr, vr"))
 	     (match_operand:<VLMUL1_ZVE32> 2 "vector_merge_operand"   " vu,  0, vu,  0")] UNSPEC_REDUC)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 32"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 32
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7533,7 +7545,8 @@  (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1>"
 	     (match_operand:VWF 3 "register_operand"             "   vr,   vr")
 	     (match_operand:<VWLMUL1> 4 "register_operand"       "   vr,   vr")
 	     (match_operand:<VWLMUL1> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128"
+  "TARGET_VECTOR && TARGET_MIN_VLEN >= 128
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfwred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7554,7 +7567,8 @@  (define_insn "@pred_widen_reduc_plus<order><mode><vwlmul1_zve64>"
 	     (match_operand:VWF_ZVE64 3 "register_operand"             "   vr,   vr")
 	     (match_operand:<VWLMUL1_ZVE64> 4 "register_operand"       "   vr,   vr")
 	     (match_operand:<VWLMUL1_ZVE64> 2 "vector_merge_operand"   "   vu,    0")] UNSPEC_WREDUC_SUM)] ORDER))]
-  "TARGET_VECTOR && TARGET_MIN_VLEN == 64"
+  "TARGET_VECTOR && TARGET_MIN_VLEN == 64
+    && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfwred<order>sum.vs\t%0,%3,%4%p1"
   [(set_attr "type" "vfwred<order>")
    (set_attr "mode" "<MODE>")])
@@ -7657,7 +7671,7 @@  (define_insn "*pred_extract_first<mode>"
 	     (match_operand:VF 1 "register_operand" "vr")
 	     (parallel [(const_int 0)]))
 	   (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfmv.f.s\t%0,%1"
   [(set_attr "type" "vfmovvf")
    (set_attr "mode" "<MODE>")])
@@ -7778,7 +7792,7 @@  (define_insn "@pred_slide<ud><mode>"
 	   (match_operand:VF 2 "vector_merge_operand"     " vu,  0, vu,  0")
 	   (match_operand:VF 3 "register_operand"         " vr, vr, vr, vr")
 	   (match_operand:<VEL> 4 "register_operand"      "  f,  f,  f,  f")] VFSLIDES1))]
-  "TARGET_VECTOR"
+  "TARGET_VECTOR && riscv_vector::float_mode_supported_p (<MODE>mode)"
   "vfslide<ud>.vf\t%0,%3,%4%p1"
   [(set_attr "type" "vfslide<ud>")
    (set_attr "mode" "<MODE>")])
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
index 0923b6bc4d2..f1a29b639e0 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/zvfhmin-intrinsic.c
@@ -3,6 +3,8 @@ 
 
 #include "riscv_vector.h"
 
+typedef _Float16 float16_t;
+
 vfloat16mf4_t test_vfncvt_f_f_w_f16mf4(vfloat32mf2_t src, size_t vl) {
   return __riscv_vfncvt_f_f_w_f16mf4(src, vl);
 }
@@ -43,11 +45,20 @@  vfloat32m8_t test_vfwcvt_f_f_v_f32m8(vfloat16m4_t src, size_t vl) {
   return __riscv_vfwcvt_f_f_v_f32m8(src, vl);
 }
 
-/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 2 } } */
+vfloat16mf4_t test_vle16_v_f16mf4(const float16_t *base, size_t vl) {
+  return __riscv_vle16_v_f16mf4(base, vl);
+}
+
+vfloat16m8_t test_vle16_v_f16m8(const float16_t *base, size_t vl) {
+  return __riscv_vle16_v_f16m8(base, vl);
+}
+
+/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf4,\s*t[au],\s*m[au]} 3 } } */
 /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*mf2,\s*t[au],\s*m[au]} 2 } } */
 /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m1,\s*t[au],\s*m[au]} 2 } } */
 /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m2,\s*t[au],\s*m[au]} 2 } } */
 /* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m4,\s*t[au],\s*m[au]} 2 } } */
+/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e16,\s*m8,\s*t[au],\s*m[au]} 1 } } */
 /* { dg-final { scan-assembler-times {vfwcvt\.f\.f\.v\s+v[0-9]+,\s*v[0-9]+} 5 } } */
 /* { dg-final { scan-assembler-times {vfncvt\.f\.f\.w\s+v[0-9]+,\s*v[0-9]+} 5 } } */
-
+/* { dg-final { scan-assembler-times {vle16\.v\s+v[0-9]+,\s*0\([0-9ax]+\)} 4 } } */