diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/JumpThreading.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/JumpThreading.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/JumpThreading.cpp b/llvm/lib/Transforms/Scalar/JumpThreading.cpp index ba406a8e8b3..75c340fd593 100644 --- a/llvm/lib/Transforms/Scalar/JumpThreading.cpp +++ b/llvm/lib/Transforms/Scalar/JumpThreading.cpp @@ -925,11 +925,14 @@ bool JumpThreading::ProcessImpliedCondition(BasicBlock *BB) { while (CurrentPred && Iter++ < ImplicationSearchThreshold) { auto *PBI = dyn_cast<BranchInst>(CurrentPred->getTerminator()); - if (!PBI || !PBI->isConditional() || PBI->getSuccessor(0) != CurrentBB) + if (!PBI || !PBI->isConditional()) + return false; + if (PBI->getSuccessor(0) != CurrentBB && PBI->getSuccessor(1) != CurrentBB) return false; + bool FalseDest = PBI->getSuccessor(1) == CurrentBB; Optional<bool> Implication = - isImpliedCondition(PBI->getCondition(), Cond, DL); + isImpliedCondition(PBI->getCondition(), Cond, DL, FalseDest); if (Implication) { BI->getSuccessor(*Implication ? 1 : 0)->removePredecessor(BB); BranchInst::Create(BI->getSuccessor(*Implication ? 0 : 1), BI); |
