: richard.sandiford; gcc-patches
Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
On Wed, 2 Aug 2023, juzhe.zh...@rivai.ai wrote:
> Thanks Richard so much.
>
> Forgive me asking question again :)
>
> Is this following code correct for you ?
Well, I wond
CC: richard.sandiford; gcc-patches
Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
On Wed, 2 Aug 2023, juzhe.zh...@rivai.ai wrote:
> Thanks Richard so much.
>
> Forgive me asking question again :)
>
> Is this following code correct for you ?
Well, I w
+ else if (reduc_idx >= 0)
> + gcc_unreachable ();
> +}
>
> Thanks.
>
>
> juzhe.zh...@rivai.ai
>
> From: Richard Biener
> Date: 2023-08-02 15:49
> To: ???
> CC: richard.sandiford; gcc-patches
> Subject: Re: Re: [PATCH V2] VECT: Support CALL vectoriz
s += 2;
+ }
+ else if (reduc_idx >= 0)
+ gcc_unreachable ();
+}
Thanks.
juzhe.zh...@rivai.ai
From: Richard Biener
Date: 2023-08-02 15:49
To: 钟居哲
CC: richard.sandiford; gcc-patches
Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
On Mon, 31 Jul 2023,
18 : 0.0;
>
> with -ffast-math (probably rightfully so). I then get .FMAs
> vectorized and .COND_FMA folded.
>
> > The thing I wonder is that whether this condtion:
> >
> > if (mask_opno >= 0 && reduc_idx >= 0)
> >
> > or similar as len
> &
t;= 0)
>
> or similar as len
> if (len_opno >= 0 && reduc_idx >= 0)
>
> Whether they are redundant in vectorizable_call ?
>
>
> juzhe.zh...@rivai.ai
>
> From: Richard Biener
> Date: 2023-07-31 21:33
> To: juzhe.zh...@rivai.ai
> CC: richard.sandifor
gt;
> juzhe.zh...@rivai.ai
>
> From: Richard Biener
> Date: 2023-07-31 21:33
> To: juzhe.zh...@rivai.ai
> CC: richard.sandiford; gcc-patches
> Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
> On Mon, 31 Jul 2023, juzhe.zh...@rivai.ai wrote:
>
0)
Whether they are redundant in vectorizable_call ?
juzhe.zh...@rivai.ai
From: Richard Biener
Date: 2023-07-31 21:33
To: juzhe.zh...@rivai.ai
CC: richard.sandiford; gcc-patches
Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
On Mon, 31 Jul 2023, juzhe.zh...@rivai.ai wrote:
>
-07-31 20:00
> To: juzhe.zh...@rivai.ai
> CC: richard.sandiford; gcc-patches
> Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
> On Mon, 31 Jul 2023, juzhe.zh...@rivai.ai wrote:
>
> > Ok . Thanks Richard.
> >
> > Could you give me a case
ate: 2023-07-31 20:00
To: juzhe.zh...@rivai.ai
CC: richard.sandiford; gcc-patches
Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
On Mon, 31 Jul 2023, juzhe.zh...@rivai.ai wrote:
> Ok . Thanks Richard.
>
> Could you give me a case that SVE can vectorize
iled.
I think you need to use fma from math.h together with -ffast-math
to get fma.
Richard.
> Thanks.
>
>
> juzhe.zh...@rivai.ai
>
> From: Richard Sandiford
> Date: 2023-07-31 18:19
> To: Juzhe-Zhong
> CC: gcc-patches; rguenther
> Subject: Re: [PATCH V2] VECT: S
18:19
To: Juzhe-Zhong
CC: gcc-patches; rguenther
Subject: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
Juzhe-Zhong writes:
> Hi, Richard and Richi.
>
> Base on the suggestions from Richard:
> https://gcc.gnu.org/pipermail/gcc-patches/2023-July/625396.html
>
> Th
...@rivai.ai
From: Richard Biener
Date: 2023-07-31 18:45
To: juzhe.zh...@rivai.ai
CC: gcc-patches; richard.sandiford
Subject: Re: Re: [PATCH V2] VECT: Support CALL vectorization for COND_LEN_*
On Mon, 31 Jul 2023, juzhe.zh...@rivai.ai wrote:
> Hi, Richard. Thanks a lot for the comment
>
&
e reduc_idx >= 0 at the moment
>
> I also want to vectorize FMA into COND_LEN_FMA even reduc_idx < 0.
> Could I relax this condition for COND_LEN_* since it will improve RVV codegen
> a lot.
reduc_idx < 0 means this stmt isn't part of a reduction. So yes,
you can vectorize FMA
Juzhe-Zhong writes:
> Hi, Richard and Richi.
>
> Base on the suggestions from Richard:
> https://gcc.gnu.org/pipermail/gcc-patches/2023-July/625396.html
>
> This patch choose (1) approach that Richard provided, meaning:
>
> RVV implements cond_* optabs as expanders. RVV therefore supports
> both
.
So we only need to add 2 arguments.
But when vectorizing FMA into COND_LEN_FMA, we need to add 4 arguments
(mask,else,len,bias).
>>as said,
>>no idea why we special case reduc_idx >= 0 at the moment
I also want to vectorize FMA into COND_LEN_FMA even reduc_idx < 0.
Could
On Fri, 28 Jul 2023, Juzhe-Zhong wrote:
> Hi, Richard and Richi.
>
> Base on the suggestions from Richard:
> https://gcc.gnu.org/pipermail/gcc-patches/2023-July/625396.html
>
> This patch choose (1) approach that Richard provided, meaning:
>
> RVV implements cond_* optabs as expanders. RVV the
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