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Commit 97e14e02 authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Eliminate the IS_PHI_DEF flag and VNInfo::setIsPHIDef(). 

A value number is a PHI def if and only if it begins at a block
boundary. This can be derived from the def slot, a separate flag is not
necessary.

llvm-svn: 160893
parent 4021a7bf
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