[PATCH] D43835: Simplify more cases of logical ops of masked icmps.

Hiroshi Yamauchi via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Feb 27 14:43:34 PST 2018


yamauchi created this revision.
yamauchi added a reviewer: davidxl.

For example,

((X & 255) != 0) && ((X & 15) == 8) -> ((X & 15) == 8).
((X & 7) != 0) && ((X & 15) == 8) -> false.


Repository:
  rL LLVM

https://reviews.llvm.org/D43835

Files:
  lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  test/Transforms/InstCombine/icmp-logical.ll

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