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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2017-01-03 20:41:54 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2017-01-03 20:41:54 +0000 |
| commit | b379f8d81f6141336c8585b19f9703bc26b99e2a (patch) | |
| tree | e91a764a7f1c84b2581d2ad59d2e3c768e807937 /libgo/configure.ac | |
| parent | d4eff95b5795146476524ee1d558323ca98eb292 (diff) | |
| download | gcc-b379f8d81f6141336c8585b19f9703bc26b99e2a.zip gcc-b379f8d81f6141336c8585b19f9703bc26b99e2a.tar.gz gcc-b379f8d81f6141336c8585b19f9703bc26b99e2a.tar.bz2 | |
re PR go/78789 (Error: no such instruction: `aesenc %xmm0,%xmm2' when compiling libgo/runtime/aeshash.c)
PR go/78789
runtime: don't build aeshash.c if the assembler doesn't support it
This is for CentOS 5, whose assembler does not know the aesinc
instruction.
Fixes GCC PR 78789.
Patch by Uros Bizjak.
Reviewed-on: https://go-review.googlesource.com/34796
From-SVN: r244031
Diffstat (limited to 'libgo/configure.ac')
| -rw-r--r-- | libgo/configure.ac | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/libgo/configure.ac b/libgo/configure.ac index b7710ca..a326730 100644 --- a/libgo/configure.ac +++ b/libgo/configure.ac @@ -934,6 +934,24 @@ if test "x$libgo_cv_as_x86_64_unwind_section_type" = xyes; then [Define if your assembler supports unwind section type.]) fi +AC_CACHE_CHECK([assembler supports AES instructions], +libgo_cv_as_x86_aes, [ +libgo_cv_as_x86_aes=yes +echo 'aesenc %xmm0, %xmm1' > conftest.s +CFLAGS_hold=$CFLAGS +if test "$libgo_cv_c_unused_arguments" = yes; then + CFLAGS="$CFLAGS -Qunused-arguments" +fi +if $CC $CFLAGS -c conftest.s 2>&1 | grep -i error > /dev/null; then + libgo_cv_as_x86_aes=no +fi +CFLAGS=$CFLAGS_hold +]) +if test "x$libgo_cv_as_x86_aes" = xyes; then + AC_DEFINE(HAVE_AS_X86_AES, 1, + [Define if your assembler supports AES instructions.]) +fi + AC_CACHE_SAVE if test ${multilib} = yes; then |