[Bug tree-optimization/110087] Missing if conversion

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110087

--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #7)
> Similar conversion, not performed by gcc:
> 
> --cut here--
> #include <stdbool.h>
> 
> _Bool foo (void);
> 
> int bar (int r)
> {
>   if (foo ())
>     r++;
> 
>   return r;
> }
> --cut here--
> 
> gcc -O2:
> 
>         movl    %edi, %ebx
>         call    foo
>         cmpb    $1, %al
>         sbbl    $-1, %ebx
>         movl    %ebx, %eax
> 
> could be:
> 
>         movl    %edi, %ebx
>         callq   foo
>         movzbl  %al, %eax
>         addl    %ebx, %eax

Please file this separately, since it is a different issue. Though I think
there are dups of that one too.