diff options
Diffstat (limited to 'llvm/lib/Target/XCore/XCoreISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/XCore/XCoreISelLowering.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/llvm/lib/Target/XCore/XCoreISelLowering.cpp b/llvm/lib/Target/XCore/XCoreISelLowering.cpp index 65568c96543..c0edee55e43 100644 --- a/llvm/lib/Target/XCore/XCoreISelLowering.cpp +++ b/llvm/lib/Target/XCore/XCoreISelLowering.cpp @@ -60,6 +60,7 @@ getTargetNodeName(unsigned Opcode) const case XCoreISD::CRC8 : return "XCoreISD::CRC8"; case XCoreISD::BR_JT : return "XCoreISD::BR_JT"; case XCoreISD::BR_JT32 : return "XCoreISD::BR_JT32"; + case XCoreISD::FRAME_TO_ARGS_OFFSET : return "XCoreISD::FRAME_TO_ARGS_OFFSET"; case XCoreISD::MEMBARRIER : return "XCoreISD::MEMBARRIER"; default : return NULL; } @@ -153,6 +154,7 @@ XCoreTargetLowering::XCoreTargetLowering(XCoreTargetMachine &XTM) // Exception handling setExceptionPointerRegister(XCore::R0); setExceptionSelectorRegister(XCore::R1); + setOperationAction(ISD::FRAME_TO_ARGS_OFFSET, MVT::i32, Custom); // Atomic operations setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Custom); @@ -213,6 +215,7 @@ LowerOperation(SDValue Op, SelectionDAG &DAG) const { case ISD::SUB: return ExpandADDSUB(Op.getNode(), DAG); case ISD::FRAMEADDR: return LowerFRAMEADDR(Op, DAG); case ISD::RETURNADDR: return LowerRETURNADDR(Op, DAG); + case ISD::FRAME_TO_ARGS_OFFSET: return LowerFRAME_TO_ARGS_OFFSET(Op, DAG); case ISD::INIT_TRAMPOLINE: return LowerINIT_TRAMPOLINE(Op, DAG); case ISD::ADJUST_TRAMPOLINE: return LowerADJUST_TRAMPOLINE(Op, DAG); case ISD::INTRINSIC_WO_CHAIN: return LowerINTRINSIC_WO_CHAIN(Op, DAG); @@ -827,6 +830,15 @@ LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const { } SDValue XCoreTargetLowering:: +LowerFRAME_TO_ARGS_OFFSET(SDValue Op, SelectionDAG &DAG) const { + // This node represents offset from frame pointer to first on-stack argument. + // This is needed for correct stack adjustment during unwind. + // However, we don't know the offset until after the frame has be finalised. + // This is done during the XCoreFTAOElim pass. + return DAG.getNode(XCoreISD::FRAME_TO_ARGS_OFFSET, SDLoc(Op), MVT::i32); +} + +SDValue XCoreTargetLowering:: LowerADJUST_TRAMPOLINE(SDValue Op, SelectionDAG &DAG) const { return Op.getOperand(0); } |
