diff options
Diffstat (limited to 'llvm/lib/Transforms/Utils/SimplifyCFG.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Utils/SimplifyCFG.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp index 4e2dc7f..c52c4dc 100644 --- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp @@ -5818,7 +5818,8 @@ static bool ForwardSwitchConditionToPHI(SwitchInst *SI) { for (auto &ForwardingNode : ForwardingNodes) { PHINode *Phi = ForwardingNode.first; SmallVectorImpl<int> &Indexes = ForwardingNode.second; - if (Indexes.size() < 2) + // Check if it helps to fold PHI. + if (Indexes.size() < 2 && !llvm::is_contained(Phi->incoming_values(), SI->getCondition())) continue; for (int Index : Indexes) |