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Commit b1b3db68 authored by Manman Ren's avatar Manman Ren
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ARM: Clean up optimizeCompare in peephole, no functional change. 

Use getUniqueVRegDef.
Replace a loop with existing interfaces: modifiesRegister and readsRegister.
Factor out code into inline functions and simplify the code.

llvm-svn: 159470
parent 5d577a22
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