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7 Commits

Author SHA1 Message Date
Owen Anderson d104806575 Use a depth-first iteratation in CorrelatedValuePropagation to avoid wasting time trying 
to optimize unreachable blocks.

llvm-svn: 114105
 2010-09-16 18:35:07 +00:00
Owen Anderson c91c1a205a Propagate non-local comparisons. Fixes PR1757. 
llvm-svn: 113025
 2010-09-03 22:47:08 +00:00
Owen Anderson c725462245 Add support for simplifying a load from a computed value to a load from a global when it 
is provable that they're equivalent.  This fixes PR4855.

llvm-svn: 112994
 2010-09-03 19:08:37 +00:00
Owen Anderson 048efbe225 Only try to clean up the current block if we changed that block already. 
llvm-svn: 112625
 2010-08-31 18:55:52 +00:00
Owen Anderson ce401be792 Don't perform an extra traversal of the function just to do cleanup. We can safely simplify instructions after each block has been processed without worrying about iterator invalidation. 
llvm-svn: 112594
 2010-08-31 07:55:56 +00:00
Owen Anderson 48d58ad64c Rename ValuePropagation to a more descriptive CorrelatedValuePropagation. 
llvm-svn: 112591
 2010-08-31 07:48:34 +00:00
Owen Anderson d2918a07bd Rename file to something more descriptive. 
llvm-svn: 112590
 2010-08-31 07:41:39 +00:00