Anna Thomas 8e431a9851 [LoopUnrollRuntime] NFC: Refactored safety checks of unrolling multi-exit loop ...

Refactored the code and separated out a function
`canSafelyUnrollMultiExitLoop` to reduce redundant checks and make it
easier to add profitability heuristics later.
Added tests to runtime unrolling to make sure that unrolling for
multi-exit loops is not done unless the option
-unroll-runtime-multi-exit is true.

llvm-svn: 307843

2017-07-12 20:55:43 +00:00

8.5 KiB

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