чт, 5 дек. 2024 г. в 14:23, Georg-Johann Lay :
>
> This is an addendum to the -msplit-ldst patch.
>
> When -msplit-ldst is on, it may be possible to propagate __zero_reg__
> to the sources of the new stores. For example, without this patch,
>
> unsigned long lx;
>
> void store_lsr17 (void)
> {
>
This is an addendum to the -msplit-ldst patch.
When -msplit-ldst is on, it may be possible to propagate __zero_reg__
to the sources of the new stores. For example, without this patch,
unsigned long lx;
void store_lsr17 (void)
{
lx >>= 17;
}
compiles to:
store_lsr17:
lds r26,lx+2
