Log
* config/i386/i386.md (peephole2): Reduce unnecessary
register shuffling produced by register allocation.
Cheers,
Roger
--
-Original Message-
From: Uros Bizjak
Sent: 11 August 2020 11:14
To: Roger Sayle
Cc: GCC Patches
Subject: Re: [PATCH] x86_64: Use peephole2 to
On Tue, Aug 11, 2020 at 9:34 AM Roger Sayle wrote:
>
>
> The recent fix for mul_widen_cost revealed an interesting
> quirk of ira/reload register allocation on x86_64. As shown in
> https://gcc.gnu.org/pipermail/gcc-patches/2020-August/551648.html
> for gcc.target/i386/pr71321.c we generate the f
The recent fix for mul_widen_cost revealed an interesting
quirk of ira/reload register allocation on x86_64. As shown in
https://gcc.gnu.org/pipermail/gcc-patches/2020-August/551648.html
for gcc.target/i386/pr71321.c we generate the following code that
performs unnecessary register shuffling.
