>> How does it affect RVV code quality? I thought you specifically chose
>> the previous approach because code quality was better that way.
Yes, previous way is better for RVV. But as I said, we will definitely use
SELECT_VL then
in SELECT_VL, we will using remain - step (produced by SELET_VL).
juzhe.zh...@rivai.ai
From: Richard Sandiford
Date: 2023-05-30 19:31
To: juzhe.zhong
CC: gcc-patches; rguenther; linkw
Subject: Re: [PATCH] VECT: Change flow of decrement IV
juzhe.zh...@rivai.ai writes:
> From: Ju-Zhe Zhong <juzhe.zh...@rivai.ai>
>
> Follow Richi's suggestion, I change current decrement IV flow from:
>
> do {
> remain -= MIN (vf, remain);
> } while (remain != 0);
>
> into:
>
> do {
> old_remain = remain;
> len = MIN (vf, remain);
> remain -= vf;
> } while (old_remain >= vf);
>
> to enhance SCEV.
>
> ALL tests (decrement IV) of RVV are passed.
How does it affect RVV code quality? I thought you specifically chose
the previous approach because code quality was better that way.
Richard
