On Thu, Dec 31, 2020 at 04:39:52PM +, Richard Sandiford wrote:
> Segher Boessenkool writes:
> > It isn't likely that any other pass would try to create this pattern,
> > but this isn't guaranteed, and such other passes do not necessarily do
> > the add-the-clobber (that is specific to combine,
Segher Boessenkool writes:
> It isn't likely that any other pass would try to create this pattern,
> but this isn't guaranteed, and such other passes do not necessarily do
> the add-the-clobber (that is specific to combine, even!) Maybe fwprop
> could create this insn, or something like Richard's
On Thu, Dec 31, 2020 at 1:29 PM Segher Boessenkool
wrote:
>
> Hi!
>
> On Thu, Dec 31, 2020 at 09:54:01AM +0100, Uros Bizjak wrote:
> > On Thu, Dec 31, 2020 at 9:40 AM Segher Boessenkool
> > wrote:
> > > Nice. Just one thing: in principle the splitters can be used outside of
> > > combine, too?
Hi!
On Thu, Dec 31, 2020 at 09:54:01AM +0100, Uros Bizjak wrote:
> On Thu, Dec 31, 2020 at 9:40 AM Segher Boessenkool
> wrote:
> > Nice. Just one thing: in principle the splitters can be used outside of
> > combine, too? This can lead to insns that do not recog() then? Is
> > there anything th
On Thu, Dec 31, 2020 at 9:40 AM Segher Boessenkool
wrote:
>
> Hi Uros,
>
> On Wed, Dec 30, 2020 at 05:44:50PM +0100, Uros Bizjak via Gcc-patches wrote:
> > There is no need for combine splitters to emit insn patterns with clobbers,
> > the pass is smart enough to add clobbers to patterns as necess
Hi Uros,
On Wed, Dec 30, 2020 at 05:44:50PM +0100, Uros Bizjak via Gcc-patches wrote:
> There is no need for combine splitters to emit insn patterns with clobbers,
> the pass is smart enough to add clobbers to patterns as necessary.
Nice. Just one thing: in principle the splitters can be used ou
There is no need for combine splitters to emit insn patterns with clobbers,
the pass is smart enough to add clobbers to patterns as necessary.
2020-12-30 Uroš Bizjak
gcc/
* config/i386/i386.md: Remove unnecessary clobbers
from combine splitters.
Bootstrapped and regression tested on x
