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Author SHA1 Message Date
Chris Lattner 222ef4c489 Enhance heap sra to be substantially more aggressive w.r.t PHI 
nodes.  This allows it to do fairly general phi insertion if a 
load from a pointer global wants to be SRAd but the load is used
by (recursive) phi nodes.  This fixes a pessimization on ppc
introduced by Load PRE.

llvm-svn: 61123
 2008-12-17 05:28:49 +00:00