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x86-64: Remove compiler -mavx512f check

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The minimum GCC requirement is GCC 6.2 which supports -mavx512f.  Remove
compiler -mavx512f check.  Tested with GCC 6.4.1 on Linux/x86-64.
This commit is contained in:
H.J. Lu
2021-08-20 05:23:02 -07:00
parent 84a7eb1f87
commit 5359c3bc91
5 changed files with 0 additions and 42 deletions
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3
config.h.in
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@@ -62,9 +62,6 @@
/* Define if _rtld_local structure should be forced into .sdata section. */ /* Define if _rtld_local structure should be forced into .sdata section. */
#undef HAVE_SDATA_SECTION #undef HAVE_SDATA_SECTION
/* Define if compiler supports AVX512. */
#undef HAVE_AVX512_SUPPORT
/* Define if assembler supports AVX512DQ. */ /* Define if assembler supports AVX512DQ. */
#undef HAVE_AVX512DQ_ASM_SUPPORT #undef HAVE_AVX512DQ_ASM_SUPPORT

2
sysdeps/x86_64/Makefile
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@@ -134,14 +134,12 @@ CFLAGS-tst-auditmod6c.c += $(AVX-CFLAGS)
CFLAGS-tst-auditmod7b.c += $(AVX-CFLAGS) CFLAGS-tst-auditmod7b.c += $(AVX-CFLAGS)
CFLAGS-tst-avx-aux.c += $(AVX-CFLAGS) CFLAGS-tst-avx-aux.c += $(AVX-CFLAGS)
CFLAGS-tst-avxmod.c += $(AVX-CFLAGS) CFLAGS-tst-avxmod.c += $(AVX-CFLAGS)
ifeq (yes,$(config-cflags-avx512))
AVX512-CFLAGS = -mavx512f AVX512-CFLAGS = -mavx512f
CFLAGS-tst-audit10-aux.c += $(AVX512-CFLAGS) CFLAGS-tst-audit10-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-auditmod10a.c += $(AVX512-CFLAGS) CFLAGS-tst-auditmod10a.c += $(AVX512-CFLAGS)
CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS) CFLAGS-tst-auditmod10b.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS) CFLAGS-tst-avx512-aux.c += $(AVX512-CFLAGS)
CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS) CFLAGS-tst-avx512mod.c += $(AVX512-CFLAGS)
endif
$(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \ $(objpfx)tst-glibc-hwcaps: $(objpfx)libmarkermod2-1.so \
$(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so $(objpfx)libmarkermod3-1.so $(objpfx)libmarkermod4-1.so

26
sysdeps/x86_64/configure vendored
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@@ -28,32 +28,6 @@ if test $libc_cv_asm_avx512dq = yes; then
fi fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX512 support" >&5
$as_echo_n "checking for AVX512 support... " >&6; }
if ${libc_cv_cc_avx512+:} false; then :
$as_echo_n "(cached) " >&6
else
if { ac_try='${CC-cc} -mavx512f -xc /dev/null -S -o /dev/null'
{ { 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 $ac_status = 0; }; }; then :
libc_cv_cc_avx512=$libc_cv_asm_avx512dq
else
libc_cv_cc_avx512=no
fi
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_avx512" >&5
$as_echo "$libc_cv_cc_avx512" >&6; }
if test $libc_cv_cc_avx512 = yes; then
$as_echo "#define HAVE_AVX512_SUPPORT 1" >>confdefs.h
fi
config_vars="$config_vars
config-cflags-avx512 = $libc_cv_cc_avx512"
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking -mprefer-vector-width=128" >&5 { $as_echo "$as_me:${as_lineno-$LINENO}: checking -mprefer-vector-width=128" >&5
$as_echo_n "checking -mprefer-vector-width=128... " >&6; } $as_echo_n "checking -mprefer-vector-width=128... " >&6; }
if ${libc_cv_cc_mprefer_vector_width+:} false; then : if ${libc_cv_cc_mprefer_vector_width+:} false; then :

9
sysdeps/x86_64/configure.ac
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@@ -16,15 +16,6 @@ if test $libc_cv_asm_avx512dq = yes; then
AC_DEFINE(HAVE_AVX512DQ_ASM_SUPPORT) AC_DEFINE(HAVE_AVX512DQ_ASM_SUPPORT)
fi fi
dnl Check if -mavx512f works.
AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl
LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512dq], [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 -mprefer-vector-width=128 works. dnl Check if -mprefer-vector-width=128 works.
AC_CACHE_CHECK(-mprefer-vector-width=128, libc_cv_cc_mprefer_vector_width, [dnl AC_CACHE_CHECK(-mprefer-vector-width=128, libc_cv_cc_mprefer_vector_width, [dnl
LIBC_TRY_CC_OPTION([-mprefer-vector-width=128], LIBC_TRY_CC_OPTION([-mprefer-vector-width=128],

2
sysdeps/x86_64/fpu/Makefile
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@@ -68,7 +68,6 @@ $(objpfx)test-float-libmvec-sincosf-avx2: \
$(objpfx)test-float-libmvec-sincosf-avx2.o \ $(objpfx)test-float-libmvec-sincosf-avx2.o \
$(objpfx)test-float-libmvec-sincosf-avx2-main.o $(libmvec) $(objpfx)test-float-libmvec-sincosf-avx2-main.o $(libmvec)
ifeq (yes,$(config-cflags-avx512))
libmvec-tests += double-vlen8 float-vlen16 libmvec-tests += double-vlen8 float-vlen16
tests += test-double-libmvec-sincos-avx512 \ tests += test-double-libmvec-sincos-avx512 \
test-float-libmvec-sincosf-avx512 test-float-libmvec-sincosf-avx512
@@ -84,7 +83,6 @@ $(objpfx)test-double-libmvec-sincos-avx512: \
$(objpfx)test-float-libmvec-sincosf-avx512: \ $(objpfx)test-float-libmvec-sincosf-avx512: \
$(objpfx)test-float-libmvec-sincosf-avx512.o \ $(objpfx)test-float-libmvec-sincosf-avx512.o \
$(objpfx)test-float-libmvec-sincosf-avx512-main.o $(libmvec) $(objpfx)test-float-libmvec-sincosf-avx512-main.o $(libmvec)
endif
double-vlen2-funcs = cos exp log pow sin sincos double-vlen2-funcs = cos exp log pow sin sincos
double-vlen4-funcs = cos exp log pow sin sincos double-vlen4-funcs = cos exp log pow sin sincos