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+//===-- R600ISelLowering.h - R600 DAG Lowering Interface -*- C++ -*--------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+/// \file
+/// \brief R600 DAG Lowering interface definition
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef R600ISELLOWERING_H
+#define R600ISELLOWERING_H
+
+#include "AMDGPUISelLowering.h"
+
+namespace llvm {
+
+class R600InstrInfo;
+
+class R600TargetLowering : public AMDGPUTargetLowering {
+public:
+ R600TargetLowering(TargetMachine &TM);
+ virtual MachineBasicBlock * EmitInstrWithCustomInserter(MachineInstr *MI,
+ MachineBasicBlock * BB) const;
+ virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const;
+ virtual SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const;
+ void ReplaceNodeResults(SDNode * N,
+ SmallVectorImpl<SDValue> &Results,
+ SelectionDAG &DAG) const;
+ virtual SDValue LowerFormalArguments(
+ SDValue Chain,
+ CallingConv::ID CallConv,
+ bool isVarArg,
+ const SmallVectorImpl<ISD::InputArg> &Ins,
+ DebugLoc DL, SelectionDAG &DAG,
+ SmallVectorImpl<SDValue> &InVals) const;
+ virtual EVT getSetCCResultType(EVT VT) const;
+private:
+ const R600InstrInfo * TII;
+
+ /// Each OpenCL kernel has nine implicit parameters that are stored in the
+ /// first nine dwords of a Vertex Buffer. These implicit parameters are
+ /// lowered to load instructions which retreive the values from the Vertex
+ /// Buffer.
+ SDValue LowerImplicitParameter(SelectionDAG &DAG, EVT VT,
+ DebugLoc DL, unsigned DwordOffset) const;
+
+ void lowerImplicitParameter(MachineInstr *MI, MachineBasicBlock &BB,
+ MachineRegisterInfo & MRI, unsigned dword_offset) const;
+
+ /// \brief Lower ROTL opcode to BITALIGN
+ SDValue LowerROTL(SDValue Op, SelectionDAG &DAG) const;
+
+ SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSTORE(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerFPTOUINT(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerLOAD(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerFrameIndex(SDValue Op, SelectionDAG &DAG) const;
+
+ SDValue stackPtrToRegIndex(SDValue Ptr, unsigned StackWidth,
+ SelectionDAG &DAG) const;
+ void getStackAddress(unsigned StackWidth, unsigned ElemIdx,
+ unsigned &Channel, unsigned &PtrIncr) const;
+ bool isZero(SDValue Op) const;
+};
+
+} // End namespace llvm;
+
+#endif // R600ISELLOWERING_H