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Commit 04a4fd43 authored by Shuxin Yang's avatar Shuxin Yang
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Fix a XOR reassociation bug. 

When Reassociator optimize "(x | C1)" ^ "(X & C2)", it may swap the two
subexpressions, however, it forgot to swap cached constants (of C1 and C2)
accordingly.

rdar://13739160

llvm-svn: 180676
parent 7d8b607f
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