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Commit Graph

2 Commits

Author SHA1 Message Date
Dan Gohman
885e592e9b Finally re-apply r46959. This is made feasible by the combination
of r56230, r56232, and r56246.

llvm-svn: 56247
2008-09-16 18:52:57 +00:00
Dan Gohman
0045cec2ba 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.

llvm-svn: 56232
2008-09-15 22:18:04 +00:00