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2 Commits

Author SHA1 Message Date
Dan Gohman
70ff4cf1ba Finally re-apply r46959. This is made feasible by the combination 
of r56230, r56232, and r56246.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56247 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-16 18:52:57 +00:00
Dan Gohman
fd6edef87b Teach ScalarEvolution to consider loop preheaders in the search for 
an if statement that guards a loop, to allow indvars to avoid smax
operations in more situations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56232 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-09-15 22:18:04 +00:00