[PATCH] D152278: [SCEV] Compute SCEV for ashr(add(shl(x, n), c), m) instr triplet

Fri Jun 9 01:37:38 PDT 2023

vedant-amd added a comment.

In D152278#4407841 <https://reviews.llvm.org/D152278#4407841>, @nikic wrote:

> I assume the motivation for this is the following InstCombine transform? https://llvm.godbolt.org/z/zd63TWKbW I don't think we can change that canonicalization, so undoing it in SCEV is fine.

Yup, that's correct. This canonicalization is used several times in LSR, so having it's SCEV might be beneficial.

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D152278/new/

https://reviews.llvm.org/D152278