On Sun, Jan 16, 2022 at 12:44 AM Uros Bizjak via Gcc-patches
wrote:
>
> On Sat, Jan 15, 2022 at 5:39 PM Hongyu Wang wrote:
> >
> > Thanks for the suggestion, here is the updated patch that survived
> > bootstrap/regtest.
>
> LGTM for me, but please get the final approval from Hongtao.
>
Ok, thank
On Sat, Jan 15, 2022 at 5:39 PM Hongyu Wang wrote:
>
> Thanks for the suggestion, here is the updated patch that survived
> bootstrap/regtest.
LGTM for me, but please get the final approval from Hongtao.
Thanks,
Uros.
> > Please note reg_mentioned_p in the above condition. This function
> > ret
_AVX512F
> - rename "mask3_dest_false_dep_attr" to "mask3_false_dep_for_avx512f_cond"
>
> Please note reg_mentioned_p in the above condition. This function
> returns nonzero if register op0 appears somewhere within op1 and is
> critical for the correct operation of your patch.
>
> Uros.
From ac
On Fri, Jan 14, 2022 at 2:44 PM Hongyu Wang wrote:
>
> > Are there any technical obstacles to introduce subst to
> > define_{,insn_and_}split?
>
> gccint says: define_subst can be used only in define_insn and
> define_expand, it cannot be used in other expressions (e.g. in
> define_insn_and_split)
> Are there any technical obstacles to introduce subst to
> define_{,insn_and_}split?
gccint says: define_subst can be used only in define_insn and
define_expand, it cannot be used in other expressions (e.g. in
define_insn_and_split).
I have no idea how to implement it in current infrastructure.
On Fri, Jan 14, 2022 at 7:11 AM Hongyu Wang wrote:
>
> > > No, the approach is wrong. You have to solve output clearing on RTL
> > > level, please look at how e.g. tzcnt false dep is solved:
> >
> > Actually we have considered such approach before, but we found we need
> > to break original define
On Fri, Jan 14, 2022 at 6:46 AM Hongyu Wang wrote:
>
> > No, the approach is wrong. You have to solve output clearing on RTL
> > level, please look at how e.g. tzcnt false dep is solved:
>
> Actually we have considered such approach before, but we found we need
> to break original define_insn to r
> > No, the approach is wrong. You have to solve output clearing on RTL
> > level, please look at how e.g. tzcnt false dep is solved:
>
> Actually we have considered such approach before, but we found we need
> to break original define_insn to remove the mask/rounding subst,
> since define_split co
> No, the approach is wrong. You have to solve output clearing on RTL
> level, please look at how e.g. tzcnt false dep is solved:
Actually we have considered such approach before, but we found we need
to break original define_insn to remove the mask/rounding subst,
since define_split could not ado
On Thu, Jan 13, 2022 at 8:28 AM Hongyu Wang wrote:
>
> From: wwwhhhyyy
>
> Hi,
>
> For GoldenCove micro-architecture, force insert zero-idiom in asm
> template to break false dependency of dest register for several insns.
>
> The related insns are:
>
> VPERM/D/Q/PS/PD
> VRANGEPD/PS/SD/SS
> VGETMA
From: wwwhhhyyy
Hi,
For GoldenCove micro-architecture, force insert zero-idiom in asm
template to break false dependency of dest register for several insns.
The related insns are:
VPERM/D/Q/PS/PD
VRANGEPD/PS/SD/SS
VGETMANTSS/SD/SH
VGETMANDPS/PD - mem version only
VPMULLQ
VFMULCSH/PH
VFCMULCSH/
11 matches
Mail list logo
