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Commit 16464b36 authored by Chris Lattner's avatar Chris Lattner
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- InstCombine: (X | C1) & C2 --> X & C2 iff C1 & C1 == 0 

  - InstCombine: (X | C) & C --> C
  - InstCombine: (X | C1) & C2 --> (X | (C1&C2)) & C2

llvm-svn: 7269
parent fcd1efbb
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