Address comment V2:
https://gcc.gnu.org/pipermail/gcc-patches/2023-July/625799.html
juzhe.zh...@rivai.ai
From: Kito Cheng
Date: 2023-07-31 09:55
To: Juzhe-Zhong
CC: gcc-patches; kito.cheng; rdapp.gcc; jeffreyalaw
Subject: Re: [PATCH] RISC-V: Enable basic VLS auto-vectorization
Hi Juzhe
Hi Juzhe:
> * config/riscv/riscv.cc (riscv_estimated_poly_value): Fix incorrect
> poly estimation.
Is it a necessary change for the VLS autovectorizaion or could it be a
separate change??
Consider this following case:
void
foo (int8_t *in, int8_t *out, int8_t x)
{
for (int i = 0; i < 16; i++)
in[i] = x;
}
Compile option: --param=riscv-autovec-preference=scalable -fno-builtin
Before this patch:
foo:
li a5,16
csrra4,vlenb
vsetvli a3,zero,e8,m1
