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x86: Properly set MINIMUM_X86_ISA_LEVEL for i386 [BZ ] 

On i386, set the default minimum ISA level to 0, not 1 (baseline which
includes SSE2).  There are no changes in config.h nor in config.make on
x86-64.  This fixes BZ .

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Tested-by: Ian Jordan <immoloism@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
H.J. Lu 2024-06-10 13:02:06 -07:00
parent bef2a827a5
commit 09bc68b0ac
2 changed files with 12 additions and 4 deletions

8
sysdeps/x86/configure vendored
View File

@ -139,8 +139,10 @@ libc_cv_have_x86_isa_level=4
libc_cv_have_x86_isa_level=3
#elif MINIMUM_X86_ISA_LEVEL == 2
libc_cv_have_x86_isa_level=2
#else
#elif defined __x86_64__
libc_cv_have_x86_isa_level=baseline
#else
libc_cv_have_x86_isa_level=MINIMUM_X86_ISA_LEVEL
#endif
EOF
eval `${CC-cc} $CFLAGS $CPPFLAGS $ISAFLAG -I$srcdir -E conftest.c | grep libc_cv_have_x86_isa_level`
@ -148,8 +150,10 @@ EOF
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_isa_level" >&5
printf "%s\n" "$libc_cv_have_x86_isa_level" >&6; }
else
elif test $base_machine = x86_64; then
libc_cv_have_x86_isa_level=baseline
else
libc_cv_have_x86_isa_level=0
fi
if test $libc_cv_have_x86_isa_level = baseline; then
printf "%s\n" "#define MINIMUM_X86_ISA_LEVEL 1" >>confdefs.h

8
sysdeps/x86/configure.ac
View File

@ -96,14 +96,18 @@ libc_cv_have_x86_isa_level=4
libc_cv_have_x86_isa_level=3
#elif MINIMUM_X86_ISA_LEVEL == 2
libc_cv_have_x86_isa_level=2
#else
#elif defined __x86_64__
libc_cv_have_x86_isa_level=baseline
#else
libc_cv_have_x86_isa_level=MINIMUM_X86_ISA_LEVEL
#endif
EOF
eval `${CC-cc} $CFLAGS $CPPFLAGS $ISAFLAG -I$srcdir -E conftest.c | grep libc_cv_have_x86_isa_level`
rm -rf conftest*])
else
elif test $base_machine = x86_64; then
libc_cv_have_x86_isa_level=baseline
else
libc_cv_have_x86_isa_level=0
fi
if test $libc_cv_have_x86_isa_level = baseline; then
AC_DEFINE_UNQUOTED(MINIMUM_X86_ISA_LEVEL, 1)