We set VL/VTYPE these 2 implicit global status denpency register as fixed reg.
Then CSE can do the optimization now.
>> Yea. I'm wondering about when the right place to introduce these
>>dependencies might be. I'm still a few months out from worrying about
>>RVV, but it's not too far away.
You d
] 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)
> > (
uzhe.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 when the function has
a single block
On Wed, 1 Feb 2023, juzhe.zh...@rivai.ai wrote:
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
On Wed, 1 Feb 2023, juzhe.zh...@rivai.ai wrote:
> I don't known whether CSE do the job. What I saw is CPROP do the
> optimization when we have more than 1 block.
>
> This the RTL dump before CPROP:
>
> (insn 19 18 20 4 (set (reg:VNx1DI 151)
> (if_then_else:VNx1DI (unspec:VNx1BI [
>
I don't known whether CSE do the job. What I saw is CPROP do the optimization
when we have more than 1 block.
This the RTL dump before CPROP:
(insn 19 18 20 4 (set (reg:VNx1DI 151)
(if_then_else:VNx1DI (unspec:VNx1BI [
(const_vector:VNx1BI repeat [
