[PATCH] D90104: [LoopUnroll] Duplicate noalias metadata

[Nikita Popov via Phabricator via llvm-commits]

nikic created this revision.
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Fix for https://bugs.llvm.org/show_bug.cgi?id=39282. Scoped noalias metadata inside a loop might only be applicable within an iteration, so we should duplicate it into distinct domains when unrolling a loop.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90104

Files:
  llvm/lib/Transforms/Utils/LoopUnroll.cpp
  llvm/test/Transforms/LoopUnroll/noalias.ll
  llvm/test/Transforms/PhaseOrdering/X86/vdiv.ll

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