[v2,1/6] config: Added HAVE_AARCH64_SVE_ASM for aarch64
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Commit Message
From: Naohiro Tamura <naohirot@jp.fujitsu.com>
This patch checks if assembler supports '-march=armv8.2-a+sve' to
generate SVE code or not, and then define HAVE_AARCH64_SVE_ASM macro.
---
config.h.in | 5 +++++
sysdeps/aarch64/configure | 28 ++++++++++++++++++++++++++++
sysdeps/aarch64/configure.ac | 15 +++++++++++++++
3 files changed, 48 insertions(+)
Comments
The 05/12/2021 09:26, Naohiro Tamura wrote:
> From: Naohiro Tamura <naohirot@jp.fujitsu.com>
>
> This patch checks if assembler supports '-march=armv8.2-a+sve' to
> generate SVE code or not, and then define HAVE_AARCH64_SVE_ASM macro.
this is ok for master.
i will commit it for you.
> ---
> config.h.in | 5 +++++
> sysdeps/aarch64/configure | 28 ++++++++++++++++++++++++++++
> sysdeps/aarch64/configure.ac | 15 +++++++++++++++
> 3 files changed, 48 insertions(+)
>
> diff --git a/config.h.in b/config.h.in
> index 99036b887f..13fba9bb8d 100644
> --- a/config.h.in
> +++ b/config.h.in
> @@ -121,6 +121,11 @@
> /* AArch64 PAC-RET code generation is enabled. */
> #define HAVE_AARCH64_PAC_RET 0
>
> +/* Assembler support ARMv8.2-A SVE.
> + This macro becomes obsolete when glibc increased the minimum
> + required version of GNU 'binutils' to 2.28 or later. */
> +#define HAVE_AARCH64_SVE_ASM 0
> +
> /* ARC big endian ABI */
> #undef HAVE_ARC_BE
>
> diff --git a/sysdeps/aarch64/configure b/sysdeps/aarch64/configure
> index 83c3a23e44..4c1fac49f3 100644
> --- a/sysdeps/aarch64/configure
> +++ b/sysdeps/aarch64/configure
> @@ -304,3 +304,31 @@ fi
> $as_echo "$libc_cv_aarch64_variant_pcs" >&6; }
> config_vars="$config_vars
> aarch64-variant-pcs = $libc_cv_aarch64_variant_pcs"
> +
> +# Check if asm support armv8.2-a+sve
> +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SVE support in assembler" >&5
> +$as_echo_n "checking for SVE support in assembler... " >&6; }
> +if ${libc_cv_asm_sve+:} false; then :
> + $as_echo_n "(cached) " >&6
> +else
> + cat > conftest.s <<\EOF
> + ptrue p0.b
> +EOF
> +if { ac_try='${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&5'
> + { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
> + (eval $ac_try) 2>&5
> + ac_status=$?
> + $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
> + test $ac_status = 0; }; }; then
> + libc_cv_aarch64_sve_asm=yes
> +else
> + libc_cv_aarch64_sve_asm=no
> +fi
> +rm -f conftest*
> +fi
> +{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_sve" >&5
> +$as_echo "$libc_cv_asm_sve" >&6; }
> +if test $libc_cv_aarch64_sve_asm = yes; then
> + $as_echo "#define HAVE_AARCH64_SVE_ASM 1" >>confdefs.h
> +
> +fi
> diff --git a/sysdeps/aarch64/configure.ac b/sysdeps/aarch64/configure.ac
> index 66f755078a..3347c13fa1 100644
> --- a/sysdeps/aarch64/configure.ac
> +++ b/sysdeps/aarch64/configure.ac
> @@ -90,3 +90,18 @@ EOF
> fi
> rm -rf conftest.*])
> LIBC_CONFIG_VAR([aarch64-variant-pcs], [$libc_cv_aarch64_variant_pcs])
> +
> +# Check if asm support armv8.2-a+sve
> +AC_CACHE_CHECK(for SVE support in assembler, libc_cv_asm_sve, [dnl
> +cat > conftest.s <<\EOF
> + ptrue p0.b
> +EOF
> +if AC_TRY_COMMAND(${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&AS_MESSAGE_LOG_FD); then
> + libc_cv_aarch64_sve_asm=yes
> +else
> + libc_cv_aarch64_sve_asm=no
> +fi
> +rm -f conftest*])
> +if test $libc_cv_aarch64_sve_asm = yes; then
> + AC_DEFINE(HAVE_AARCH64_SVE_ASM)
> +fi
> --
> 2.17.1
>
@@ -121,6 +121,11 @@
/* AArch64 PAC-RET code generation is enabled. */
#define HAVE_AARCH64_PAC_RET 0
+/* Assembler support ARMv8.2-A SVE.
+ This macro becomes obsolete when glibc increased the minimum
+ required version of GNU 'binutils' to 2.28 or later. */
+#define HAVE_AARCH64_SVE_ASM 0
+
/* ARC big endian ABI */
#undef HAVE_ARC_BE
@@ -304,3 +304,31 @@ fi
$as_echo "$libc_cv_aarch64_variant_pcs" >&6; }
config_vars="$config_vars
aarch64-variant-pcs = $libc_cv_aarch64_variant_pcs"
+
+# Check if asm support armv8.2-a+sve
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SVE support in assembler" >&5
+$as_echo_n "checking for SVE support in assembler... " >&6; }
+if ${libc_cv_asm_sve+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat > conftest.s <<\EOF
+ ptrue p0.b
+EOF
+if { ac_try='${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&5'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }; then
+ libc_cv_aarch64_sve_asm=yes
+else
+ libc_cv_aarch64_sve_asm=no
+fi
+rm -f conftest*
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_sve" >&5
+$as_echo "$libc_cv_asm_sve" >&6; }
+if test $libc_cv_aarch64_sve_asm = yes; then
+ $as_echo "#define HAVE_AARCH64_SVE_ASM 1" >>confdefs.h
+
+fi
@@ -90,3 +90,18 @@ EOF
fi
rm -rf conftest.*])
LIBC_CONFIG_VAR([aarch64-variant-pcs], [$libc_cv_aarch64_variant_pcs])
+
+# Check if asm support armv8.2-a+sve
+AC_CACHE_CHECK(for SVE support in assembler, libc_cv_asm_sve, [dnl
+cat > conftest.s <<\EOF
+ ptrue p0.b
+EOF
+if AC_TRY_COMMAND(${CC-cc} -c -march=armv8.2-a+sve conftest.s 1>&AS_MESSAGE_LOG_FD); then
+ libc_cv_aarch64_sve_asm=yes
+else
+ libc_cv_aarch64_sve_asm=no
+fi
+rm -f conftest*])
+if test $libc_cv_aarch64_sve_asm = yes; then
+ AC_DEFINE(HAVE_AARCH64_SVE_ASM)
+fi