[PATCH] D77076: [InstSimplify] Allow some arithmetic optimizations for add/sub/div/rem look through freeze

[Juneyoung Lee via Phabricator via llvm-commits]

aqjune added a comment.

In D77076#1951042 <https://reviews.llvm.org/D77076#1951042>, @nikic wrote:

> > This is a patch to relieve possible performance degradation after D76483 <https://reviews.llvm.org/D76483>.
>
> To clarify, does this address a specific issue encountered there, or is this more of a hypothetical optimization? (The last comment on that thread indicates that the issue is lack of Freeze support in SCEV.)


This is more of a hypothetical optimization, but making a few existing optimizations in InstSimplify to expand seemed straightforward to me. I'll clarify this in the summary.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D77076/new/

https://reviews.llvm.org/D77076