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Commit eddf7712 authored by Dan Gohman's avatar Dan Gohman
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Teach ScalarEvolution how to recognize another xor(and(x, C), C) case. 

If C is a single bit and the and gets analyzed as a truncate and
zero-extend, the xor can be represnted as an add.

llvm-svn: 73664
parent 4d8723d4
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