diff mbox series

RISC-V: Add floating-point to integer conversion RVV auto-vectorization support

Message ID 20230529034916.4045904-1-juzhe.zhong@rivai.ai
State Superseded
Headers
Series RISC-V: Add floating-point to integer conversion RVV auto-vectorization support |

Commit Message

juzhe.zhong@rivai.ai May 29, 2023, 3:49 a.m. UTC 
  From: Juzhe-Zhong <juzhe.zhong@rivai.ai>

Even though we can't support floating-point operations which are depending
on FRM yet, (for example vfadd support is blocked) since the RVV intrinsic doc is not updated
and we can't support mode switching for this.

We can support floating-point to integer conversion now since it's not depending on FRM and
we don't need mode switching support for this ('rtz' conversions independent FRM).

gcc/ChangeLog:

        * config/riscv/autovec.md (<optab><mode><vconvert>2): New pattern.
        * config/riscv/iterators.md: New attribute.
        * config/riscv/vector-iterators.md: New attribute.

gcc/testsuite/ChangeLog:

        * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c: New test.
        * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c: New test.
        * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c: New test.
        * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h: New test.

---
 gcc/config/riscv/autovec.md                   | 23 ++++++++
 gcc/config/riscv/iterators.md                 |  4 +-
 gcc/config/riscv/vector-iterators.md          |  5 ++
 .../rvv/autovec/conversions/vfcvt_rtz-run.c   | 52 +++++++++++++++++++
 .../autovec/conversions/vfcvt_rtz-rv32gcv.c   |  6 +++
 .../autovec/conversions/vfcvt_rtz-rv64gcv.c   |  6 +++
 .../autovec/conversions/vfcvt_rtz-template.h  | 15 ++++++
 7 files changed, 110 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
diff mbox series

Patch

diff --git a/gcc/config/riscv/autovec.md b/gcc/config/riscv/autovec.md
index b24867ae4d0..3989ffb26ee 100644
--- a/gcc/config/riscv/autovec.md
+++ b/gcc/config/riscv/autovec.md
@@ -478,6 +478,29 @@ 
   DONE;
 })
 
+;; =========================================================================
+;; == Conversions
+;; =========================================================================
+
+;; -------------------------------------------------------------------------
+;; ---- [INT<-FP] Conversions
+;; -------------------------------------------------------------------------
+;; Includes:
+;; - vfcvt.rtz.xu.f.v
+;; - vfcvt.rtz.x.f.v
+;; -------------------------------------------------------------------------
+
+(define_expand "<optab><mode><vconvert>2"
+  [(set (match_operand:<VCONVERT> 0 "register_operand")
+	(any_fix:<VCONVERT>
+	  (match_operand:VF 1 "register_operand")))]
+  "TARGET_VECTOR"
+{
+  insn_code icode = code_for_pred (<CODE>, <MODE>mode);
+  riscv_vector::emit_vlmax_insn (icode, riscv_vector::RVV_UNOP, operands);
+  DONE;
+})
+
 ;; =========================================================================
 ;; == Unary arithmetic
 ;; =========================================================================
diff --git a/gcc/config/riscv/iterators.md b/gcc/config/riscv/iterators.md
index 8afe98e4410..d374a10810c 100644
--- a/gcc/config/riscv/iterators.md
+++ b/gcc/config/riscv/iterators.md
@@ -225,7 +225,9 @@ 
 			 (ss_minus "sssub")
 			 (us_minus "ussub")
 			 (sign_extend "extend")
-			 (zero_extend "zero_extend")])
+			 (zero_extend "zero_extend")
+			 (fix "fix_trunc")
+			 (unsigned_fix "fixuns_trunc")])
 
 ;; <or_optab> code attributes
 (define_code_attr or_optab [(ior "ior")
diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
index 70fb5b80b1b..937ec3c7f67 100644
--- a/gcc/config/riscv/vector-iterators.md
+++ b/gcc/config/riscv/vector-iterators.md
@@ -1208,6 +1208,11 @@ 
   (VNx1DF "VNx1DI") (VNx2DF "VNx2DI") (VNx4DF "VNx4DI") (VNx8DF "VNx8DI") (VNx16DF "VNx16DI")
 ])
 
+(define_mode_attr vconvert [
+  (VNx1SF "vnx1si") (VNx2SF "vnx2si") (VNx4SF "vnx4si") (VNx8SF "vnx8si") (VNx16SF "vnx16si") (VNx32SF "vnx32si")
+  (VNx1DF "vnx1di") (VNx2DF "vnx2di") (VNx4DF "vnx4di") (VNx8DF "vnx8di") (VNx16DF "vnx16di")
+])
+
 (define_mode_attr VNCONVERT [
   (VNx1SF "VNx1HI") (VNx2SF "VNx2HI") (VNx4SF "VNx4HI") (VNx8SF "VNx8HI") (VNx16SF "VNx16HI") (VNx32SF "VNx32HI")
   (VNx1DI "VNx1SF") (VNx2DI "VNx2SF") (VNx4DI "VNx4SF") (VNx8DI "VNx8SF") (VNx16DI "VNx16SF")
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
new file mode 100644
index 00000000000..b81814893dd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
@@ -0,0 +1,52 @@ 
+/* { dg-do run { target { riscv_vector } } } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+#define RUN(TYPE1, TYPE2, NUM)                                                 \
+  TYPE1 src##TYPE1##TYPE2##NUM[NUM];                                           \
+  TYPE2 dst##TYPE1##TYPE2##NUM[NUM];                                           \
+  for (int i = 0; i < NUM; i++)                                                \
+    {                                                                          \
+      src##TYPE1##TYPE2##NUM[i] = i * 3.1315926 + 88932.947289;                \
+    }                                                                          \
+  vfcvt_##TYPE1##TYPE2 (dst##TYPE1##TYPE2##NUM, src##TYPE1##TYPE2##NUM, NUM);  \
+  for (int i = 0; i < NUM; i++)                                                \
+    if (dst##TYPE1##TYPE2##NUM[i] == (TYPE2) i)                                \
+      __builtin_abort ();
+
+int
+main ()
+{
+  RUN (float, int32_t, 3)
+  RUN (float, int32_t, 4)
+  RUN (float, int32_t, 7)
+  RUN (float, int32_t, 99)
+  RUN (float, int32_t, 119)
+  RUN (float, int32_t, 128)
+  RUN (float, int32_t, 256)
+  RUN (float, int32_t, 279)
+  RUN (float, int32_t, 555)
+  RUN (float, int32_t, 1024)
+  RUN (float, int32_t, 1389)
+  RUN (float, int32_t, 2048)
+  RUN (float, int32_t, 3989)
+  RUN (float, int32_t, 4096)
+  RUN (float, int32_t, 5975)
+
+  RUN (double, int64_t, 3)
+  RUN (double, int64_t, 4)
+  RUN (double, int64_t, 7)
+  RUN (double, int64_t, 99)
+  RUN (double, int64_t, 119)
+  RUN (double, int64_t, 128)
+  RUN (double, int64_t, 256)
+  RUN (double, int64_t, 279)
+  RUN (double, int64_t, 555)
+  RUN (double, int64_t, 1024)
+  RUN (double, int64_t, 1389)
+  RUN (double, int64_t, 2048)
+  RUN (double, int64_t, 3989)
+  RUN (double, int64_t, 4096)
+  RUN (double, int64_t, 5975)
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
new file mode 100644
index 00000000000..2f84631775f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
@@ -0,0 +1,6 @@ 
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv32gcv -mabi=ilp32d --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
new file mode 100644
index 00000000000..40e3e7a450d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
@@ -0,0 +1,6 @@ 
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv64gcv -mabi=lp64d --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
new file mode 100644
index 00000000000..73bc1ad5591
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
@@ -0,0 +1,15 @@ 
+#include <stdint-gcc.h>
+
+#define TEST(TYPE1, TYPE2)                                                     \
+  __attribute__ ((noipa)) void vfcvt_##TYPE1##TYPE2 (TYPE2 *dst, TYPE1 *a,     \
+						     int n)                    \
+  {                                                                            \
+    for (int i = 0; i < n; i++)                                                \
+      dst[i] = (TYPE1) a[i];                                                   \
+  }
+
+#define TEST_ALL()                                                             \
+  TEST (float, int32_t)                                                        \
+  TEST (double, int64_t)
+
+TEST_ALL ()