Committed with an extra testcase from PR109547
https://gcc.gnu.org/pipermail/gcc-patches/2023-April/616363.html
On Fri, Apr 7, 2023 at 9:34 AM wrote:
>
> From: Juzhe-Zhong
>
> This patch is to enhance optimization for auto-vectorization.
>
> Before this patch:
>
> Loop:
> vsetvl a5,a2...
> vset
From: Juzhe-Zhong
This patch is to enhance optimization for auto-vectorization.
Before this patch:
Loop:
vsetvl a5,a2...
vsetvl zero,a5...
vle
After this patch:
Loop:
vsetvl a5,a2
vle
gcc/ChangeLog:
* config/riscv/riscv-vsetvl.cc (local_eliminate_vsetvl_insn): New
function.
