On 5/24/23 17:14, Jivan Hakobyan via Gcc-patches wrote:
Subject:
[RFC] RISC-V: Eliminate extension after for *w instructions
From:
Jivan Hakobyan via Gcc-patches
Date:
5/24/23, 17:14
To:
gcc-patches@gcc.gnu.org
`This patch tries to prevent generating unnecessary sign extension
after *w
On 5/24/23 17:14, Jivan Hakobyan via Gcc-patches wrote:
`This patch tries to prevent generating unnecessary sign extension
after *w instructions like "addiw" or "divw".
The main idea of it is to add SUBREG_PROMOTED fields during expanding.
I have tested on SPEC2017 there is no regression.
On
On 5/24/23 17:14, Jivan Hakobyan via Gcc-patches wrote:
gcc/ChangeLog:
* config/riscv/bitmanip.md (rotrdi3): New pattern.
(rotrsi3): Likewise.
(rotlsi3): Likewise.
* config/riscv/riscv-protos.h (riscv_emit_binary): New function
declaration
`This patch tries to prevent generating unnecessary sign extension
after *w instructions like "addiw" or "divw".
The main idea of it is to add SUBREG_PROMOTED fields during expanding.
I have tested on SPEC2017 there is no regression.
Only gcc.dg/pr30957-1.c test failed.
To solve that I did some c
