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Author SHA1 Message Date
Dan Gohman
40561dd0ba When checking whether the special handling for an addrec increment which 
doesn't dominate the header is needed, don't check whether the increment
expression has computable loop evolution. While the operands of an
addrec are required to be loop-invariant, they're not required to 
dominate any part of the loop. This fixes PR6914.

llvm-svn: 102389
 2010-04-26 21:46:36 +00:00
Dan Gohman
38949c2f1f Fix LSR to tolerate cases where ScalarEvolution initially 
misses an opportunity to fold add operands, but folds them
after LSR has separated them out. This fixes rdar://7886751.

llvm-svn: 102157
 2010-04-23 01:55:05 +00:00
Dan Gohman
bfa2d75c49 Create a README.txt for lib/Analysis, and add an entry. 
llvm-svn: 83001
 2009-09-28 18:38:53 +00:00