[Bug testsuite/50185] New: [4.7 Regression] FAIL: gcc.target/i386/avx2-vmovmskb-2.c scan-assembler vmovmskb on x86_64-apple-darwin10

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50185

             Bug #: 50185
           Summary: [4.7 Regression] FAIL:
                    gcc.target/i386/avx2-vmovmskb-2.c scan-assembler
                    vmovmskb on x86_64-apple-darwin10
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: domi...@lps.ens.fr
                CC: h...@gcc.gnu.org, kirill.yuk...@intel.com
              Host: x86_64-apple-darwin10
            Target: x86_64-apple-darwin10
             Build: x86_64-apple-darwin10


In the tests introduced in revision 178006, scan-assembler vmovmskb fails for
gcc.target/i386/avx2-vmovmskb-2.c on x86_64-apple-darwin10. The assembly is

    .text
    .align 4,0x90
_do_test:
LFB1005:
    pushq    %rbp
LCFI0:
    xorl    %eax, %eax
    movl    $1, %esi
LCFI1:
    movq    %rsp, %rbp
LCFI2:
    andq    $-32, %rsp
    subq    $32, %rsp
    vmovdqa    LC0(%rip), %ymm0
    vmovdqa    %ymm0, (%rsp)
    jmp    L3
    .align 4,0x90
L2:
    addq    $1, %rax
    cmpq    $32, %rax
    je    L7
L3:
    cmpb    $0, (%rsp,%rax)
    movl    %eax, %ecx
    jns    L2
    movl    %esi, %edi
    addq    $1, %rax
    sall    %cl, %edi
    orl    %edi, %edx
    cmpq    $32, %rax
    jne    L3
L7:
    vmovdqa    LC1(%rip), %ymm0
    vpmovmskb    %ymm0, %eax
    cmpl    %edx, %eax
    jne    L8
    leave
LCFI3:
    vzeroupper
    ret
L8:
LCFI4:
    vzeroupper
    call    _abort
...

So there is no vmovmskb, but three vmovdqa. Any idea why?