> Plz put your testcases into:
>
> # widening operation only test on LMUL < 8
> set AUTOVEC_TEST_OPTS [list \
> {-ftree-vectorize -O3 --param riscv-autovec-lmul=m1} \
> {-ftree-vectorize -O3 --param riscv-autovec-lmul=m2} \
> {-ftree-vectorize -O3 --param riscv-autovec-lmul=m4} \
> {-ftree
ot;
}
You could either simpilfy put them into "widen" directory or create a new
directly.
Anyway, make sure you have fully tested it with LMUL = 1/2/4.
juzhe.zh...@rivai.ai
From: Robin Dapp
Date: 2023-08-03 02:49
To: 钟居哲; gcc-patches; palmer; kito.cheng; Jeff Law
CC: rdapp.gcc
Subject: Re:
I just checked LLVM:
https://godbolt.org/z/nMa6qnEeT
This patch generally is reasonable so LGTM.
juzhe.zh...@rivai.ai
From: Robin Dapp
Date: 2023-08-03 02:49
To: 钟居哲; gcc-patches; palmer; kito.cheng; Jeff Law
CC: rdapp.gcc
Subject: Re: [PATCH] RISC-V: Implement vector "average&quo
> 1. How do you model round to +Inf (avg_floor) and round to -Inf (avg_ceil) ?
That's just specified by the +1 or the lack of it in the original pattern.
Actually the IFN is just a detour because we would create perfect code
if not for the fallback. But as there is currently now way to check for
: rdapp.gcc
Subject: [PATCH] RISC-V: Implement vector "average" autovec pattern.
Hi,
this patch adds vector average patterns
op[0] = (narrow) ((wide) op[1] + (wide) op[2]) >> 1;
op[0] = (narrow) ((wide) op[1] + (wide) op[2] + 1) >> 1;
If there is no direct support, the vectori
Hi,
this patch adds vector average patterns
op[0] = (narrow) ((wide) op[1] + (wide) op[2]) >> 1;
op[0] = (narrow) ((wide) op[1] + (wide) op[2] + 1) >> 1;
If there is no direct support, the vectorizer can synthesize the patterns
but, presumably due to lack of narrowing operation support, won't
