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| author | Naohiro Tamura <naohirot@jp.fujitsu.com> | 2021-05-12 09:26:40 +0000 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2021-05-26 12:01:06 +0100 |
| commit | 77d175e14e5f4cf24e9579c03eef5d006a286316 (patch) | |
| tree | a7d8a3778d938f830137f537796cd9a06e53d4e5 /sysdeps/aarch64/configure.ac | |
| parent | bfbdfe4eabb7514d7c44f3bc161fa8ef4e2ee364 (diff) | |
| download | glibc-77d175e14e5f4cf24e9579c03eef5d006a286316.zip glibc-77d175e14e5f4cf24e9579c03eef5d006a286316.tar.gz glibc-77d175e14e5f4cf24e9579c03eef5d006a286316.tar.bz2 | |
config: Added HAVE_AARCH64_SVE_ASM for aarch64
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.
Diffstat (limited to 'sysdeps/aarch64/configure.ac')
| -rw-r--r-- | sysdeps/aarch64/configure.ac | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/aarch64/configure.ac b/sysdeps/aarch64/configure.ac index 66f7550..3347c13 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 |