: 2023-08-24 17:13
To: Juzhe-Zhong; gcc-patches
CC: rdapp.gcc; kito.cheng; kito.cheng; jeffreyalaw
Subject: Re: [PATCH] RISC-V: Support LEN_FOLD_EXTRACT_LAST auto-vectorization
Hi Juzhe,
> vcpop.m a5,v0
> beq a5,zero,.L3
> addi a5,a5,-1
> vsetvli a4,zero,e32,m1,ta,ma
> vcompress.vm
ential bugs. I will commit that tomorrow
when kito no more comments.
juzhe.zh...@rivai.ai
From: Robin Dapp
Date: 2023-08-24 17:13
To: Juzhe-Zhong; gcc-patches
CC: rdapp.gcc; kito.cheng; kito.cheng; jeffreyalaw
Subject: Re: [PATCH] RISC-V: Support LEN_FOLD_EXTRACT_LAST auto-vectorization
Hi Juzhe,
>
Hi Juzhe,
> vcpop.m a5,v0
> beq a5,zero,.L3
> addia5,a5,-1
> vsetvli a4,zero,e32,m1,ta,ma
> vcompress.vmv2,v3,v0
> vslidedown.vx v2,v2,a5
> vmv.x.s a0,v2
> .L3:
> sext.w a0,a0
Mhm, where is this sext coming from? Thought I had this c
Consider this following case:
int __attribute__ ((noinline, noclone))
condition_reduction (int *a, int min_v)
{
int last = 66; /* High start value. */
for (int i = 0; i < 4; i++)
if (a[i] < min_v)
last = i;
return last;
}
--param=riscv-autovec-preference=fixed-vlmax --param=risc
