http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52910
--- Comment #2 from Uros Bizjak <ubizjak at gmail dot com> 2012-11-23 07:42:38
UTC ---
Current mainline compiles f13 to:
f13:
vpxor %xmm0, %xmm0, %xmm0
xorl %eax, %eax
.L36:
vmovdqa c2(%rax), %xmm2
addq $16, %rax
vpmacsdqh %xmm0, c3-16(%rax), %xmm2, %xmm0
vpmacsdql %xmm0, c3-16(%rax), %xmm2, %xmm0
cmpq $2048, %rax
jne .L36
vpsrldq $8, %xmm0, %xmm1
vpaddq %xmm0, %xmm1, %xmm0
vpextrq $0, %xmm0, %rax
ret
Does this work OK?
