diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/BranchProbabilityInfo.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/BranchProbabilityInfo.cpp b/llvm/lib/Analysis/BranchProbabilityInfo.cpp index 62cc686211a..301c3ee6ad8 100644 --- a/llvm/lib/Analysis/BranchProbabilityInfo.cpp +++ b/llvm/lib/Analysis/BranchProbabilityInfo.cpp @@ -322,6 +322,9 @@ bool BranchProbabilityInfo::calcLoopBranchHeuristics(BasicBlock *BB) { InEdges.push_back(I.getSuccessorIndex()); } + if (BackEdges.empty() && ExitingEdges.empty()) + return false; + if (uint32_t numBackEdges = BackEdges.size()) { uint32_t backWeight = LBH_TAKEN_WEIGHT / numBackEdges; if (backWeight < NORMAL_WEIGHT) |
