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Commit fd018c8d authored by Chris Lattner's avatar Chris Lattner
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Fix an issue where LSR would miss rewriting a use of an IV expression by a PHI... 

Fix an issue where LSR would miss rewriting a use of an IV expression by a PHI node that is not the original PHI.

This fixes up a dot-product loop in galgel, speeding it up from 18.47s to
16.13s.

llvm-svn: 23327
parent a78635c1
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