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Commit d0a4ee84 authored by Manman Ren's avatar Manman Ren
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X86: remove redundant cmp against zero. 

Updated OptimizeCompare in peephole to remove redundant cmp against zero.
We only remove Compare if CF and OF are not used.

rdar://11855129

llvm-svn: 160454
parent b03cc7e9
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