en Copyright 2015 Java http://172.16.0.5:8080/history/llvm-project-15.0.7/llvm/test/Transforms/LoopRotate/multiple-deopt-exits.ll#9e6a1e57 [NewPM][LoopRotate] Rename rotate -> loop-rotateTo match legacy pass name.Reviewed By: ychenDifferential Revision: https://reviews.llvm.org/D85338 List of files: /llvm-project-15.0.7/llvm/test/Transforms/LoopRotate/multiple-deopt-exits.ll Wed, 05 Aug 2020 19:22:07 +0000 Arthur Eubanks <aeubanks@google.com> http://172.16.0.5:8080/history/llvm-project-15.0.7/llvm/test/Transforms/LoopRotate/multiple-deopt-exits.ll#2f6987ba [LoopRotate] add ability to repeat loop rotation until non-deoptimizing exit is foundIn case of loops with multiple exit where all-but-one exit are deoptimizingit might happen that the first rotation will end up with latch having a deoptimizingexit. 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 bewith 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, fhahnReviewed By: skatkovTags: #llvmDifferential Revision: https://reviews.llvm.org/D73058 List of files: /llvm-project-15.0.7/llvm/test/Transforms/LoopRotate/multiple-deopt-exits.ll Thu, 23 Jan 2020 12:55:32 +0000 Fedor Sergeev <fedor.sergeev@azul.com>