[Bug target/44088] New: -mavx doesn't generate always AVX instructions

[hjl dot tools at gmail dot com]

[...@gnu-6 gcc]$ cat
/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/avx-cmpsd-2.c
/* { dg-do compile } */
/* { dg-options "-O2 -mavx" } */

#include <emmintrin.h>

__m128d
foo (__m128d x, __m128d y)
{
  return _mm_cmpeq_sd (x, y);
}


/* { dg-final { scan-assembler "vcmpeqsd" } } */
[...@gnu-6 gcc]$ gcc -S -mavx
/export/gnu/import/git/gcc/gcc/testsuite/gcc.target/i386/avx-cmpsd-2.c -O2
[...@gnu-6 gcc]$ cat avx-cmpsd-2.s 
        .file   "avx-cmpsd-2.c"
        .text
        .p2align 4,,15
.globl foo
        .type   foo, @function
foo:
.LFB516:
        .cfi_startproc
        cmpeqsd %xmm1, %xmm0
        ret
        .cfi_endproc
.LFE516:
        .size   foo, .-foo


-- 
           Summary: -mavx doesn't generate always AVX instructions
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44088