Sure thing.
Pan
-Original Message-
From: Vineet Gupta
Sent: Saturday, March 2, 2024 3:00 AM
To: Li, Pan2 ; Kito Cheng ; 钟居哲
Cc: gcc-patches ; Wang, Yanzhang
; rdapp.gcc ; Jeff Law
Subject: Re: [PATCH v3] RISC-V: Introduce gcc option mrvv-vector-bits for RVV
Hi Pan,
On 2/28/24 17
; gcc-patches
> ; Wang, Yanzhang ;
> rdapp.gcc ; Jeff Law
> *Subject:* Re: Re: [PATCH v3] RISC-V: Introduce gcc option
> mrvv-vector-bits for RVV
>
>
>
> Hmm, maybe only keep --param=riscv-autovec-preference=none and remove
> other two if we think that might still useful
> I think it makes more sense to remove the whole
> --param=riscv-autovec-preference since we should use
> -fno-tree-vectorize instead of --param=riscv-autovec-preference=none
> which is more reasonable compile option for users.
>
> --param is just a internal testing option that we added before,
To: 钟居哲
Cc: Li, Pan2 ; gcc-patches ; Wang,
Yanzhang ; rdapp.gcc ; Jeff Law
Subject: Re: Re: [PATCH v3] RISC-V: Introduce gcc option mrvv-vector-bits for
RVV
Hmm, maybe only keep --param=riscv-autovec-preference=none and remove other two
if we think that might still useful? But anyway I have
should remove them.
juzhe.zh...@rivai.ai
From: Kito Cheng
Date: 2024-02-28 22:55
To: 钟居哲
CC: pan2.li; gcc-patches; yanzhang.wang; rdapp.gcc; Jeff Law
Subject: Re: Re: [PATCH v3] RISC-V: Introduce gcc option mrvv-vector-bits for
RVV
Hmm, maybe only keep --param=riscv-autovec-preference=none
gcc
> ; jeffreyalaw
> *Subject:* Re: [PATCH v3] RISC-V: Introduce gcc option mrvv-vector-bits
> for RVV
> Take one more look, I think this option should work and integrate with
> --param=riscv-autovec-preference= since they have similar jobs but
> slightly different.
>
>
I think it makes more sense to remove --param=riscv-autovec-preference and add
-mrvv-vector-bits
juzhe.zh...@rivai.ai
From: Kito Cheng
Date: 2024-02-28 20:56
To: pan2.li
CC: gcc-patches; juzhe.zhong; yanzhang.wang; rdapp.gcc; jeffreyalaw
Subject: Re: [PATCH v3] RISC-V: Introduce gcc
..@gmail.com
Subject: Re: [PATCH v3] RISC-V: Introduce gcc option mrvv-vector-bits for RVV
Take one more look, I think this option should work and integrate with
--param=riscv-autovec-preference= since they have similar jobs but
slightly different.
We have 3 value for --param=riscv-autovec-prefe
Take one more look, I think this option should work and integrate with
--param=riscv-autovec-preference= since they have similar jobs but
slightly different.
We have 3 value for --param=riscv-autovec-preference=: none, scalable
and fixed-vlmax
-mrvv-vector-bits=scalable is work like
From: Pan Li
This patch would like to introduce one new gcc option for RVV. To
appoint the bits size of one RVV vector register. Valid arguments to
'-mrvv-vector-bits=' are:
* scalable
* zvl
The scalable will pick up the zvl*b in the march as the minimal vlen.
For example, the minimal vlen
From: Pan Li
This patch would like to introduce one new gcc option for RVV. To
appoint the bits size of one RVV vector register. Valid arguments to
'-mrvv-vector-bits=' are:
* scalable
* zvl
The scalable will pick up the zvl*b in the march as the minimal vlen.
For example, the minimal vlen
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