[PATCH] D63709: [AMDGPU] Add peephole to optimize MOV

Tue Jun 25 08:24:43 PDT 2019

arsenm added a comment.

In D63709#1557605 <https://reviews.llvm.org/D63709#1557605>, @arsenm wrote:

> In D63709#1557592 <https://reviews.llvm.org/D63709#1557592>, @arsenm wrote:
>
> > Reduced further: https://paste.debian.net/1089194
>
>
> Other targets seem to not have this problem with a slightly generalized version, so I would look into how this is cleaned up there

It seems we're missing a simplifycfg run somewhere, so maybe we're thinking of this on the wrong level entirely.. If I run simplify cfg on any of the testcase variants, this problem disappears

Repository:
  rL LLVM

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D63709/new/

https://reviews.llvm.org/D63709