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Commit 4453dc97 authored by Jakob Stoklund Olesen's avatar Jakob Stoklund Olesen
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Teach PHIElimination to split critical edges when -split-phi-edges is enabled. 

Critical edges leading to a PHI node are split when the PHI source variable is
live out from the predecessor block. This help the coalescer eliminate more
PHI joins.

llvm-svn: 86725
parent 19f235e4
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