diff options
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 27ee96dfedf..7bf58514bdb 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -3831,13 +3831,10 @@ void SelectionDAGBuilder::visitMaskedLoad(const CallInst &I) { I.getAAMetadata(AAInfo); const MDNode *Ranges = I.getMetadata(LLVMContext::MD_range); - SDValue InChain = DAG.getRoot(); - if (AA->pointsToConstantMemory(MemoryLocation( - PtrOperand, DAG.getDataLayout().getTypeStoreSize(I.getType()), - AAInfo))) { - // Do not serialize (non-volatile) loads of constant memory with anything. - InChain = DAG.getEntryNode(); - } + // Do not serialize masked loads of constant memory with anything. + bool AddToChain = !AA->pointsToConstantMemory(MemoryLocation( + PtrOperand, DAG.getDataLayout().getTypeStoreSize(I.getType()), AAInfo)); + SDValue InChain = AddToChain ? DAG.getRoot() : InChain = DAG.getEntryNode(); MachineMemOperand *MMO = DAG.getMachineFunction(). @@ -3847,8 +3844,10 @@ void SelectionDAGBuilder::visitMaskedLoad(const CallInst &I) { SDValue Load = DAG.getMaskedLoad(VT, sdl, InChain, Ptr, Mask, Src0, VT, MMO, ISD::NON_EXTLOAD); - SDValue OutChain = Load.getValue(1); - DAG.setRoot(OutChain); + if (AddToChain) { + SDValue OutChain = Load.getValue(1); + DAG.setRoot(OutChain); + } setValue(&I, Load); } |
