> the dump-scans. Can we do sth like
> "vect_recog_dot_prod_pattern: detected\n(!FAILED)*SUCCEEDED", thus
> after the dot-prod pattern dumping allow arbitrary stuff but _not_
> a "failed" and then require a "succeeded"?
It took some fighting with tcl syntax until I arrived at the regex
pattern be
>> I am wondering whether we do have some situations that
>> vec_pack/vec_unpack/vec_widen_xxx/dot_prod pattern can be
>> beneficial for RVV ? I have ever met some situation that vec_unpack
>> can be beneficial when working on SELECT_VL but I don't which
>> case
>
> With fixed size vectors y
> it's target dependent what we choose first so it's going to be
> a bit difficult to adjust testcases like this (and it looks like
> a testsuite issue). I think for this specific testcase changing
> scan-tree-dump-times to scan-tree-dump is reasonable. Note we
> really want to check that for the
e of how useful it would be.
Richard.
>
>
> juzhe.zh...@rivai.ai
>
> From: Robin Dapp
> Date: 2023-08-30 16:06
> To: Richard Biener; juzhe.zh...@rivai.ai
> CC: rdapp.gcc; gcc
> Subject: Re: Question about wrapv-vect-reduc-dot-s8b.c
> >> To fix it, is it necess
On Wed, 30 Aug 2023, Robin Dapp wrote:
> >> To fix it, is it necessary to support 'vec_unpack' ?
> >
> > both same units would be sext, not vec_unpacks_{lo,hi} - the vectorizer
> > ties its hands by choosing vector types early and based on the number
> > of incoming/outgoing vectors it chooses on
Dapp
Date: 2023-08-30 16:06
To: Richard Biener; juzhe.zh...@rivai.ai
CC: rdapp.gcc; gcc
Subject: Re: Question about wrapv-vect-reduc-dot-s8b.c
>> To fix it, is it necessary to support 'vec_unpack' ?
>
> both same units would be sext, not vec_unpacks_{lo,hi} - the vectorizer
&
>> To fix it, is it necessary to support 'vec_unpack' ?
>
> both same units would be sext, not vec_unpacks_{lo,hi} - the vectorizer
> ties its hands by choosing vector types early and based on the number
> of incoming/outgoing vectors it chooses one or the other method.
>
> More precise dumping w
cted" 1
> FAIL: gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c scan-tree-dump-times vect
> "vect_recog_widen_mult_pattern: detected" 1
juzhe.zh...@rivai.ai
From: Richard Biener
Date: 2023-08-30 15:45
To: juzhe.zh...@rivai.ai
CC: gcc; Robin Dapp
Subject: Re: Question about wrapv-vec
On Wed, 30 Aug 2023, juzhe.zh...@rivai.ai wrote:
> Hi, I start to enable "vect" testsuite for RISC-V.
>
> I have a question when analyzing the 'wrapv-vect-reduc-dot-s8b.c'
> It failed at:
> FAIL: gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c scan-tree-dump-times vect
> "vect_recog_dot_prod_pattern: det
Hi, I start to enable "vect" testsuite for RISC-V.
I have a question when analyzing the 'wrapv-vect-reduc-dot-s8b.c'
It failed at:
FAIL: gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c scan-tree-dump-times vect
"vect_recog_dot_prod_pattern: detected" 1
FAIL: gcc.dg/vect/wrapv-vect-reduc-dot-s8b.c scan-tre
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