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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,
SDLoc DL, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const;
virtual EVT getSetCCResultType(LLVMContext &, EVT VT) const;
private:
unsigned Gen;
/// 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,
SDLoc DL, unsigned DwordOffset) const;
void lowerImplicitParameter(MachineInstr *MI, MachineBasicBlock &BB,
MachineRegisterInfo & MRI, unsigned dword_offset) const;
SDValue OptimizeSwizzle(SDValue BuildVector, SDValue Swz[], SelectionDAG &DAG) const;
/// \brief Lower ROTL opcode to BITALIGN
SDValue LowerROTL(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerSELECT_CC(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 LowerTrig(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;
virtual SDNode *PostISelFolding(MachineSDNode *N, SelectionDAG &DAG) const;
};
} // End namespace llvm;
#endif // R600ISELLOWERING_H
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