diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/LoopRotationUtils.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/LoopRotationUtils.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/LoopRotationUtils.cpp b/llvm/lib/Transforms/Utils/LoopRotationUtils.cpp index 7bb7cea..da817fb 100644 --- a/llvm/lib/Transforms/Utils/LoopRotationUtils.cpp +++ b/llvm/lib/Transforms/Utils/LoopRotationUtils.cpp @@ -345,8 +345,12 @@ bool LoopRotate::rotateLoop(Loop *L, bool SimplifiedLatch) { // all outer loops because insertion and deletion of blocks that happens // during the rotation may violate invariants related to backedge taken // infos in them. - if (SE) + if (SE) { SE->forgetTopmostLoop(L); + // We may hoist some instructions out of loop. In case if they were cached + // as "loop variant" or "loop computable", these caches must be dropped. + SE->forgetLoopDispositions(); + } LLVM_DEBUG(dbgs() << "LoopRotation: rotating "; L->dump()); if (MSSAU && VerifyMemorySSA) |