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Author SHA1 Message Date
Dinesh Dwivedi
2a747bf1c5 LCSSA should be performed on the outermost affected loop while unrolling loop. 
During loop-unroll, loop exits from the current loop may end up in in different
outer loop. This requires to re-form LCSSA recursively for one level down from
the outer most loop where loop exits are landed during unroll. This fixes PR18861.

Differential Revision: http://reviews.llvm.org/D2976



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209796 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-29 06:47:23 +00:00