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Author SHA1 Message Date
Dan Gohman 04c8bd7e11 Revert 52645, the loop unroller changes. It caused a regression in 252.eon. 
llvm-svn: 52688
 2008-06-24 20:44:42 +00:00
Dan Gohman 48c5c7e860 Revamp the loop unroller, extending it to correctly update PHI nodes 
in the presence of out-of-loop users of in-loop values and the trip
count is not a known multiple of the unroll count, and to be a bit
simpler overall. This fixes PR2253.

llvm-svn: 52645
 2008-06-23 21:29:41 +00:00
Dan Gohman 3dc2d92ebd Split the loop unroll mechanism logic out into a utility function. 
Patch by Matthijs Kooijman!

llvm-svn: 51083
 2008-05-14 00:24:14 +00:00