diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/CodeGen/MachineBlockPlacement.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/MachineBlockPlacement.cpp b/llvm/lib/CodeGen/MachineBlockPlacement.cpp index ddddd483e80..fcddf346cf6 100644 --- a/llvm/lib/CodeGen/MachineBlockPlacement.cpp +++ b/llvm/lib/CodeGen/MachineBlockPlacement.cpp @@ -423,9 +423,13 @@ MachineBlockPlacement::selectBestSuccessor(MachineBasicBlock *BB, DEBUG(dbgs() << "Attempting merge from: " << getBlockName(BB) << "\n"); for (MachineBasicBlock *Succ : Successors) { - BranchProbability SuccProb( - MBPI->getEdgeProbability(BB, Succ).getNumerator(), - AdjustedSumProb.getNumerator()); + BranchProbability SuccProb; + uint32_t SuccProbN = MBPI->getEdgeProbability(BB, Succ).getNumerator(); + uint32_t SuccProbD = AdjustedSumProb.getNumerator(); + if (SuccProbN >= SuccProbD) + SuccProb = BranchProbability::getOne(); + else + SuccProb = BranchProbability(SuccProbN, SuccProbD); // If we outline optional branches, look whether Succ is unavoidable, i.e. // dominates all terminators of the MachineFunction. If it does, other |
