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Commit 8c35fb07 authored by Benjamin Kramer's avatar Benjamin Kramer
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Teach InstructionSimplify to fold (A & B) & A -> A & B and (A | B) | A -> A | B. 

Reassociate does this but it doesn't catch all cases (e.g. if the operands are i1).

llvm-svn: 113651
parent b8a76c42
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