diff options
Diffstat (limited to 'sysdeps/x86_64/configure.ac')
| -rw-r--r-- | sysdeps/x86_64/configure.ac | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac index c682f93c3e..5e5d61b317 100644 --- a/sysdeps/x86_64/configure.ac +++ b/sysdeps/x86_64/configure.ac @@ -23,6 +23,30 @@ 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 + vmovdqu64 %zmm0, (%rsp) +EOF +if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_asm_avx512=yes +else + libc_cv_asm_avx512=no +fi +rm -f conftest*]) +if test $libc_cv_asm_avx512 == yes; then + AC_DEFINE(HAVE_AVX512_ASM_SUPPORT) +fi + dnl Check if -msse2avx works. AC_CACHE_CHECK(for AVX encoding of SSE instructions, libc_cv_cc_sse2avx, [dnl LIBC_TRY_CC_OPTION([-msse2avx], |