diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 8 | ||||
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 412de1c89b..71da0ab3e5 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -918,10 +918,10 @@ void SelectionDAGBuilder::visitRet(const ReturnInst &I) { /// created for it, emit nodes to copy the value into the virtual /// registers. void SelectionDAGBuilder::CopyToExportRegsIfNeeded(const Value *V) { - if (!V->use_empty()) { - DenseMap<const Value *, unsigned>::iterator VMI = FuncInfo.ValueMap.find(V); - if (VMI != FuncInfo.ValueMap.end()) - CopyValueToVirtualRegister(V, VMI->second); + DenseMap<const Value *, unsigned>::iterator VMI = FuncInfo.ValueMap.find(V); + if (VMI != FuncInfo.ValueMap.end()) { + assert(!V->use_empty() && "Unused value assigned virtual registers!"); + CopyValueToVirtualRegister(V, VMI->second); } } diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 7436bbea72..9082fb6fbe 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -834,7 +834,7 @@ void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) { BI->dump(); } - if (!BI->getType()->isVoidTy()) { + if (!BI->getType()->isVoidTy() && !BI->use_empty()) { unsigned &R = FuncInfo->ValueMap[BI]; if (!R) R = FuncInfo->CreateRegForValue(BI); |