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Commit 34cb93e1 authored by Manman Ren's avatar Manman Ren
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ARM: Fix optimizeCompare to correctly check safe condition. 

It is safe if CPSR is killed or re-defined.
When we are done with the basic block, check whether CPSR is live-out.
Do not optimize away cmp if CPSR is live-out.

llvm-svn: 160090
parent 1325384b
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