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| author | H.J. Lu <hjl.tools@gmail.com> | 2014-03-14 08:51:25 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2014-03-14 08:51:25 -0700 |
| commit | aa4de9cea5c07d43caeaca9722c2d417e9a2919c (patch) | |
| tree | ad0d817c67581c5c0e5b54d0e3213b361075485e /sysdeps/x86_64/configure.ac | |
| parent | 2e03fae7b711b87733f8c897cb42ea74d2dc156a (diff) | |
| download | glibc-aa4de9cea5c07d43caeaca9722c2d417e9a2919c.tar.gz | |
Check AVX-512 assembler support first
It checks AVX-512 assembler support first and sets libc_cv_cc_avx512 to
$libc_cv_asm_avx512, instead of yes. GCC won't support AVX-512 if
assembler doesn't support it.
* sysdeps/x86_64/configure.ac: Check AVX-512 assembler support
first. Disable AVX-512 GCC support if assembler doesn't support
it.
* sysdeps/x86_64/configure: Regenerated.
Diffstat (limited to 'sysdeps/x86_64/configure.ac')
| -rw-r--r-- | sysdeps/x86_64/configure.ac | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac index 5e5d61b317..d34f9a8eec 100644 --- a/sysdeps/x86_64/configure.ac +++ b/sysdeps/x86_64/configure.ac @@ -23,15 +23,6 @@ if test $libc_cv_cc_avx = yes; then fi LIBC_CONFIG_VAR([config-cflags-avx], [$libc_cv_cc_avx]) -dnl Check if -mavx512f works. -AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl -LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=yes], [libc_cv_cc_avx512=no]) -]) -if test $libc_cv_cc_avx512 = yes; then - AC_DEFINE(HAVE_AVX512_SUPPORT) -fi -LIBC_CONFIG_VAR([config-cflags-avx512], [$libc_cv_cc_avx512]) - dnl Check if asm supports AVX512. AC_CACHE_CHECK(for AVX512 support in assembler, libc_cv_asm_avx512, [dnl cat > conftest.s <<\EOF @@ -47,6 +38,15 @@ if test $libc_cv_asm_avx512 == yes; then AC_DEFINE(HAVE_AVX512_ASM_SUPPORT) fi +dnl Check if -mavx512f works. +AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl +LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512], [libc_cv_cc_avx512=no]) +]) +if test $libc_cv_cc_avx512 = yes; then + AC_DEFINE(HAVE_AVX512_SUPPORT) +fi +LIBC_CONFIG_VAR([config-cflags-avx512], [$libc_cv_cc_avx512]) + dnl Check if -msse2avx works. AC_CACHE_CHECK(for AVX encoding of SSE instructions, libc_cv_cc_sse2avx, [dnl LIBC_TRY_CC_OPTION([-msse2avx], |