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Author SHA1 Message Date
Nadav Rotem b0082d246a PR1860 - We can't save a list of ExtractElement instructions to CSE because some of these instructions 
may be removed and optimized in future iterations. Instead we save a list of basic blocks that we need to CSE.

llvm-svn: 195791
 2013-11-26 22:24:25 +00:00
Nadav Rotem f9f8482e3a PR18060 - When we RAUW values with ExtractElement instructions in some cases 
we generate PHI nodes with multiple entries from the same basic block but
with different values. Enabling CSE on ExtractElement instructions make sure
that all of the RAUWed instructions are the same.

llvm-svn: 195773
 2013-11-26 17:29:19 +00:00