https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89654
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Apparently started with r253934:
foo:
.LFB0:
.cfi_startproc
vmovq 4(%esp), %xmm0
vpsllq $3, %xmm0, %xmm0
vmovd %xmm0, %eax
vpextrd $1, %xmm0, %edx
ret
.cfi_endproc
while the previous revision generates:
foo:
.LFB0:
.cfi_startproc
pushl %ebx
.cfi_def_cfa_offset 8
.cfi_offset 3, -8
movl 8(%esp), %ecx
movl 12(%esp), %ebx
movl %ecx, %eax
movl %ebx, %edx
sall $3, %eax
popl %ebx
.cfi_restore 3
.cfi_def_cfa_offset 4
shldl $3, %ecx, %edx
ret
.cfi_endproc
