From: Ju-Zhe Zhong
This patch implement decrement IV for length approach in loop control.
Address comment from kewen that incorporate the implementation inside
"vect_set_loop_controls_directly" instead of a standalone function.
Address comment from Richard using MIN_EXPR to handle these 3 follo
u-Zhe Zhong
Subject: [PATCH V11] VECT: Add decrement IV support in Loop Vectorizer
From: Ju-Zhe Zhong
This patch implement decrement IV for length approach in loop control.
Address comment from kewen that incorporate the implementation inside
"vect_set_loop_controls_directly&quo
Thanks for the update. I'll split this review into two pieces.
Second piece to follow (not sure when, but hopefully soon).
juzhe.zh...@rivai.ai writes:
> diff --git a/gcc/tree-vect-loop.cc b/gcc/tree-vect-loop.cc
> index ed0166fedab..6f49bdee009 100644
> --- a/gcc/tree-vect-loop.cc
> +++ b/gcc/tr
"juzhe.zh...@rivai.ai" writes:
>>> I don't think this is a property of decrementing IVs. IIUC it's really
>>> a property of rgl->factor == 1 && factor == 1, where factor would need
>>> to be passed in by the caller. Because of that, it should probably be
>>> a separate patch.
> Is it right that
"juzhe.zh...@rivai.ai" writes:
> Hi, Richard. Thanks for the comments.
>
> Would you mind telling me whether it is possible that we can make decrement
> IV support into GCC middle-end ?
>
> If yes, could you tell what I should do next for the patches since I am
> confused that it seems the imple
On Fri, May 19, 2023 at 12:59 PM Richard Sandiford via Gcc-patches
wrote:
>
> "juzhe.zh...@rivai.ai" writes:
> >>> I don't think this is a property of decrementing IVs. IIUC it's really
> >>> a property of rgl->factor == 1 && factor == 1, where factor would need
> >>> to be passed in by the call
n elements rather than bytes.
>> So I think the above part of the patch should go in ahead of the IV changes.
>> But the test should be based on factor rather than
>> TYPE_VECTOR_SUBPARTS.Since the length control measured by bytes instead of
>> bytes is not appropriate for
abandoned and need to rewrite the whole thing.
Would you mind giving me more information?
Thanks.
juzhe.zh...@rivai.ai
From: Richard Sandiford
Date: 2023-05-19 18:23
To: juzhe.zhong
CC: gcc-patches; rguenther
Subject: Re: [PATCH V11] VECT: Add decrement IV support in Loop Vectorizer
Thanks for
ue for RVV).
So you could image I will post more middle-end patches for RVV
auto-vectorization in the future.
Thanks.
juzhe.zh...@rivai.ai
From: Richard Biener
Date: 2023-05-22 18:12
To: Richard Sandiford; juzhe.zh...@rivai.ai; gcc-patches; rguenther
Subject: Re: [PATCH V11] VECT: Add decreme
