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Author SHA1 Message Date
Brendon Cahoon
23b0065f29 [Hexagon] Check for underflow/wrap in hardware loop pass 
If the loop trip count may underflow or wrap, the compiler should
not generate a hardware loop since the trip count will be
incorrect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237365 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-05-14 14:15:08 +00:00