[PATCH] D126515: [InstCombine] Fold memchr of sequences of same characters

[Martin Sebor via Phabricator via llvm-commits]

msebor updated this revision to Diff 433202.
msebor marked an inline comment as done.
msebor added a comment.
Herald added a subscriber: jsji.

- Add a `substr` helper function and call it.
- Remove a spurious change to `LibCallSimplifier::optimizeStrChr`.
- Add a missing conditional and a test case for it.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D126515/new/

https://reviews.llvm.org/D126515

Files:
  llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
  llvm/test/Transforms/InstCombine/memchr-6.ll
  llvm/test/Transforms/InstCombine/memchr.ll
  llvm/test/Transforms/InstCombine/strchr-3.ll

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