diff options
| author | H.J. Lu <hongjiu.lu@intel.com> | 2018-10-12 12:34:36 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2018-10-12 05:34:36 -0700 |
| commit | e0b0bc007cb21d0541dee0f80544884d5d74d06e (patch) | |
| tree | 725686bb0aeae67fbfa9b5d4510a859acf2bf67d | |
| parent | a19a0829cab9c0358a90c73010104d421f43ead4 (diff) | |
| download | gcc-e0b0bc007cb21d0541dee0f80544884d5d74d06e.tar.gz | |
i386: Don't pass -msse2avx to assembler for -mavx
With
gcc -O2 -fPIC -flto -g -c -o a.o a.c
gcc -O2 -fPIC -flto -g -mavx -c -o b.o b.c
gcc -shared -O2 -fPIC -flto -g -o lib1.so a.o b.o
LTO correctly generates AVX for b.o and SSE for a.o. But the GCC driver
passes -msse2avx to assembler, which encodes SSE instructions as AVX
instructions. We shouldn't pass -msse2avx to assembler for -mavx.
Backport from mainline
PR target/87522
* config/i386/gnu-user.h (ASM_SPEC): Don't pass -msse2avx to
assembler for -mavx.
* config/i386/gnu-user64.h (ASM_SPEC): Likewise.
From-SVN: r265090
| -rw-r--r-- | gcc/ChangeLog | 10 | ||||
| -rw-r--r-- | gcc/config/i386/gnu-user.h | 2 | ||||
| -rw-r--r-- | gcc/config/i386/gnu-user64.h | 2 |
3 files changed, 12 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index dfe7efc61fb..acfb3175e4d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,13 @@ +2018-10-12 H.J. Lu <hongjiu.lu@intel.com> + + Backport from mainline + 2018-10-05 H.J. Lu <hongjiu.lu@intel.com> + + PR target/87522 + * config/i386/gnu-user.h (ASM_SPEC): Don't pass -msse2avx to + assembler for -mavx. + * config/i386/gnu-user64.h (ASM_SPEC): Likewise. + 2018-09-19 John David Anglin <danglin@gcc.gnu.org> * config/pa/pa.md (atomic_storeqi): Restore deleted expander. diff --git a/gcc/config/i386/gnu-user.h b/gcc/config/i386/gnu-user.h index fee33a3efdc..3842f8928d5 100644 --- a/gcc/config/i386/gnu-user.h +++ b/gcc/config/i386/gnu-user.h @@ -67,7 +67,7 @@ along with GCC; see the file COPYING3. If not see #undef ASM_SPEC #define ASM_SPEC \ - "--32 %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}" + "--32 %{msse2avx:%{!mavx:-msse2avx}}" #undef SUBTARGET_EXTRA_SPECS #define SUBTARGET_EXTRA_SPECS \ diff --git a/gcc/config/i386/gnu-user64.h b/gcc/config/i386/gnu-user64.h index 7a02a7eb4d7..5aa2876739f 100644 --- a/gcc/config/i386/gnu-user64.h +++ b/gcc/config/i386/gnu-user64.h @@ -50,7 +50,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see #define ASM_SPEC "%{" SPEC_32 ":--32} \ %{" SPEC_64 ":--64} \ %{" SPEC_X32 ":--x32} \ - %{!mno-sse2avx:%{mavx:-msse2avx}} %{msse2avx:%{!mavx:-msse2avx}}" + %{msse2avx:%{!mavx:-msse2avx}}" #define GNU_USER_TARGET_LINK_SPEC \ "%{" SPEC_64 ":-m " GNU_USER_LINK_EMULATION64 "} \ |