[PATCH] D123629: [InstCombine] Fold memrchr calls with a constant character.

[Martin Sebor via Phabricator via llvm-commits]

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This change implements folding of `memrchr` calls with a constant array and character, analogous to `memchr`.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D123629

Files:
  llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
  llvm/test/Transforms/InstCombine/memrchr-3.ll

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