[all-commits] [llvm/llvm-project] abc8ca: [LoopInterchange] Detect output dependency of a st...

[CongzheUalberta via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: abc8ca65c3de07f12c2f019d78b7e182ae1b46d7
      https://github.com/llvm/llvm-project/commit/abc8ca65c3de07f12c2f019d78b7e182ae1b46d7
  Author: Congzhe Cao <congzhe.cao at huawei.com>
  Date:   2022-03-09 (Wed, 09 Mar 2022)

  Changed paths:
    M llvm/lib/Transforms/Scalar/LoopInterchange.cpp
    M llvm/test/Transforms/LoopInterchange/lcssa-preheader.ll
    M llvm/test/Transforms/LoopInterchange/perserve-lcssa.ll
    M llvm/test/Transforms/LoopInterchange/pr45743-move-from-inner-preheader.ll

  Log Message:
  -----------
  [LoopInterchange] Detect output dependency of a store instruction with itself

This patch is motivated by pr48057 where an output dependency is not detected
since loop interchange did not check a store instruction with itself.
Fixed that deficiency.

Reviewed By: bmahjour, Meinersbur, #loopoptwg

Differential Revision: https://reviews.llvm.org/D118102