diff options
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index df695010bf..f928c6be6b 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -196,6 +196,18 @@ public: /// getZeroExtendInReg - Return the expression required to zero extend the Op /// value assuming it was the smaller SrcTy value. SDOperand getZeroExtendInReg(SDOperand Op, MVT::ValueType SrcTy); + + /// getCALLSEQ_START - Return a new CALLSEQ_START node, which always must have + /// a flag result (to ensure it's not CSE'd). + SDOperand getCALLSEQ_START(SDOperand Chain, SDOperand Op) { + std::vector<MVT::ValueType> ResultTys; + ResultTys.push_back(MVT::Other); + ResultTys.push_back(MVT::Flag); + std::vector<SDOperand> Ops; + Ops.push_back(Chain); + Ops.push_back(Op); + return getNode(ISD::CALLSEQ_START, ResultTys, Ops); + } /// getNode - Gets or creates the specified node. /// |