> > Thank you so much. Kito helped me fix it already.
> > RVV instruction patterns can have CSE optimizations now.
> What was the issue?
VL and VTYPE isn't listed in fixed register so CSE feel that isn't
cheap (See CHEAP_REGNO in cse.cc),
but actually it's kind of mistake sett for VL and VTYPE reg
e.zh...@rivai.ai
From: Jeff Law
Date: 2023-02-02 22:36
To: juzhe.zh...@rivai.ai; rguenther
CC: gcc-patches; kito.cheng; richard.sandiford; apinski
Subject: Re: [PATCH] CPROP: Allow cprop optimization when the function has a
single block
On 2/2/23 05:35, juzhe.zh...@rivai.ai wrote:
>
On 2/2/23 05:35, juzhe.zh...@rivai.ai wrote:
Thank you so much. Kito helped me fix it already.
RVV instruction patterns can have CSE optimizations now.
What was the issue?
jeff
On 2/2/23 05:26, Richard Biener wrote:
On Thu, 2 Feb 2023, juzhe.zh...@rivai.ai wrote:
Yeah, Thanks. You are right. CSE should do the job.
Now I know the reason CSE failed to optimize is I include
VL_REGNUM(66)/VTYPE_RENUM(67) hard reg
as the dependency of pred_broadcast:
(insn 19 18 20 4 (
] CPROP: Allow cprop optimization when the function has
a single block
On Thu, 2 Feb 2023, juzhe.zh...@rivai.ai wrote:
> Yeah, Thanks. You are right. CSE should do the job.
> Now I know the reason CSE failed to optimize is I include
> VL_REGNUM(66)/VTYPE_RENUM(67) hard reg
> as the d
On Thu, 2 Feb 2023, juzhe.zh...@rivai.ai wrote:
> Yeah, Thanks. You are right. CSE should do the job.
> Now I know the reason CSE failed to optimize is I include
> VL_REGNUM(66)/VTYPE_RENUM(67) hard reg
> as the dependency of pred_broadcast:
> (insn 19 18 20 4 (set (reg:VNx1DI 152)
> > (
structions ?
Thanks.
juzhe.zh...@rivai.ai
From: Richard Biener
Date: 2023-02-01 23:46
To: juzhe.zhong
CC: rguenther; gcc-patches; kito.cheng; richard.sandiford; jeffreyalaw; apinski
Subject: Re: [PATCH] CPROP: Allow cprop optimization when the function has a
single block
Am 01.02.2023 um 13:57
t sure
whether CSE can propagate the 151 pseudo
to the second pred_add ??
juzhe.zh...@rivai.ai
From: Richard Biener
Date: 2023-02-01 20:51
To: juzhe.zh...@rivai.ai
CC: gcc-patches; kito.cheng; richard.sandiford; jeffreyalaw; apinski
Subject: Re: Re: [PATCH] CPROP: Allow cprop optimization wh
8)
> (expr_list:REG_DEAD (reg/v:VNx1DI 139 [ v3 ])
> (nil
>
> You can see CPROP remove the second the "pred_broadcast" instruction and
> propagate the result to the second "pred_add" instruction?
I see loads of UNSPECs, that might explain why
CPROP remove the second the "pred_broadcast" instruction and
propagate the result to the second "pred_add" instruction。
juzhe.zh...@rivai.ai
From: Richard Biener
Date: 2023-02-01 20:40
To: Ju-Zhe Zhong
CC: gcc-patches; kito.cheng; richard.sandiford; jeffreyalaw; apinski
Subje
On Wed, 1 Feb 2023, juzhe.zh...@rivai.ai wrote:
> From: Ju-Zhe Zhong
>
> Hi, this patch is present for GCC 14 since I understand it's not appropriate
> to land it in GCC 13.
>
> NUM_FIXED_BLOCKS = 2 since GCC define each function has aleast 2 blocks
> one is entry block, the other is exit block
11 matches
Mail list logo
