Fedor Sergeev 2f6987ba61 [LoopRotate] add ability to repeat loop rotation until non-deoptimizing exit is found ... In case of loops with multiple exit where all-but-one exit are deoptimizing it might happen that the first rotation will end up with latch having a deoptimizing exit. This makes the loop unsuitable for trip-count analysis (say, getLoopEstimatedTripCount) as well as for loop transformations that know how to handle multple deoptimizing exits. It pretty much means that canonical form in multple-deoptimizing-exits case should be with non-deoptimizing exit at latch. Teach loop-rotation to reach this canonical form by repeating rotation. -loop-rotate-multi option introduced to control this behavior, currently disabled by default. Reviewers: skatkov, asbirlea, reames, fhahn Reviewed By: skatkov Tags: #llvm Differential Revision: https://reviews.llvm.org/D73058		2020-01-23 15:56:24 +03:00
..
IPO
Scalar	[LICM] Invalidate SCEV upon instruction hoisting	2019-10-31 17:37:53 +07:00
Utils	[LoopRotate] add ability to repeat loop rotation until non-deoptimizing exit is found	2020-01-23 15:56:24 +03:00
Vectorize	[VPlan] Rename VPlanHCFGTransforms to VPlanTransforms (NFC).	2019-12-07 08:56:35 +00:00
CMakeLists.txt