Re: [PATCH] [rtl/cprop_hardreg] Don't propagate for a more expensive reg-reg move.

On 1/24/2022 6:31 PM, liuhongt via Gcc-patches wrote: For i386, it enables optimization like: vmovd %xmm0, %edx - vmovd %xmm0, %eax + movl%edx, %eax Bootstrapped and regtested on CLX for both x86_64-pc-linux-gnu{-m32,} and x86_64-pc-linux-gnu{-m32\ -march=native,

[PATCH] [rtl/cprop_hardreg] Don't propagate for a more expensive reg-reg move.

For i386, it enables optimization like: vmovd %xmm0, %edx - vmovd %xmm0, %eax + movl%edx, %eax Bootstrapped and regtested on CLX for both x86_64-pc-linux-gnu{-m32,} and x86_64-pc-linux-gnu{-m32\ -march=native,\ -march=native} Ok for trunk? gcc/ChangeLog: PR