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Author SHA1 Message Date
Chris Lattner 8fb07c5a21 fix PR5837 by having SSAUpdate reuse phi nodes for the 
'GetValueInMiddleOfBlock' case, instead of inserting 
duplicates.

A similar fix is almost certainly needed by the machine-level
SSAUpdate implementation.

llvm-svn: 91820
 2009-12-21 07:16:11 +00:00