On Thu, Jun 2, 2022 at 12:55 PM Roger Sayle wrote:
>
>
> Hi Richard,
> > + /* RTL expansion knows how to expand rotates using shift/or. */ if
> > + (icode == CODE_FOR_nothing
> > + && (code == LROTATE_EXPR || code == RROTATE_EXPR)
> > + && optab_handler (ior_optab, vec_mode) != CODE_F
Hi Richard,
> + /* RTL expansion knows how to expand rotates using shift/or. */ if
> + (icode == CODE_FOR_nothing
> + && (code == LROTATE_EXPR || code == RROTATE_EXPR)
> + && optab_handler (ior_optab, vec_mode) != CODE_FOR_nothing
> + && optab_handler (ashl_optab, vec_mode) != C
On Mon, May 30, 2022 at 2:24 PM Roger Sayle wrote:
>
>
> Whilst investigating PR 55278, I noticed that the tree-ssa optimizers
> aren't eliminating the promotions of shifts to "int" as inserted by the
> c-family front-ends, instead leaving this simplification to be left to
> the RTL optimizers. T
On 5/30/2022 6:23 AM, Roger Sayle wrote:
Whilst investigating PR 55278, I noticed that the tree-ssa optimizers
aren't eliminating the promotions of shifts to "int" as inserted by the
c-family front-ends, instead leaving this simplification to be left to
the RTL optimizers. This patch allows m
