[all-commits] [llvm/llvm-project] 659c7b: [LoopRotate] Use llvm.experimental.noalias.scope.d...

[dobbelaj-snps via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 659c7bcde62e96c84f157b1d4ac4f320c56089a1
      https://github.com/llvm/llvm-project/commit/659c7bcde62e96c84f157b1d4ac4f320c56089a1
  Author: Jeroen Dobbelaere <jeroen.dobbelaere at synopsys.com>
  Date:   2021-01-24 (Sun, 24 Jan 2021)

  Changed paths:
    M llvm/include/llvm/Transforms/Utils/Cloning.h
    M llvm/lib/Transforms/Utils/CloneFunction.cpp
    M llvm/lib/Transforms/Utils/LoopRotationUtils.cpp
    A llvm/test/Transforms/LoopRotate/noalias.ll

  Log Message:
  -----------
  [LoopRotate] Use llvm.experimental.noalias.scope.decl for duplicating noalias metadata as needed

Similar to D92887, LoopRotation also needs duplicate the noalias scopes when rotating a `@llvm.experimental.noalias.scope.decl` across a block boundary.
This is based on the version from the Full Restrict paches (D68511).

The problem it fixes also showed up in Transforms/Coroutines/ex5.ll after D93040 (when enabling strict checking with -verify-noalias-scope-decl-dom).

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D94306