[PATCH] D127766: [InstCombine] Fold memcmp of constant arrays and variable size

[Martin Sebor via Phabricator via llvm-commits]

msebor updated this revision to Diff 437390.
msebor added a comment.

Revision 3 performs the `memcmp` character comparison in `unsigned char`.

I've left the loop as suggested but I expect to need to go back to something closer to the original in the `strncmp` followup.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D127766/new/

https://reviews.llvm.org/D127766

Files:
  llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
  llvm/test/Transforms/InstCombine/memcmp-5.ll
  llvm/test/Transforms/InstCombine/memcmp-6.ll

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