On Thu, Oct 19, 2017 at 10:09 AM, Jakub Jelinek wrote:
> Hi!
>
> With the patch you've checked in yesterday we generate e.g. for f2
> cmpq%rdi, %rdx
> sbbq%rsi, %rcx
> setb%al
> movzbl %al, %eax
> This is because the peephole2s we have for setcc + movzb
Hi!
With the patch you've checked in yesterday we generate e.g. for f2
cmpq%rdi, %rdx
sbbq%rsi, %rcx
setb%al
movzbl %al, %eax
This is because the peephole2s we have for setcc + movzbl to xorl + setcc
check that the flags register is dead before the inst
