Differential D29933 Diff 119619 llvm/trunk/lib/Target/RISCV/RISCVISelLowering.h

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llvm/trunk/lib/Target/RISCV/RISCVISelLowering.h

				//===-- RISCVISelLowering.h - RISCV 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.
				//
				//===----------------------------------------------------------------------===//
				//
				// This file defines the interfaces that RISCV uses to lower LLVM code into a
				// selection DAG.
				//
				//===----------------------------------------------------------------------===//

				#ifndef LLVM_LIB_TARGET_RISCV_RISCVISELLOWERING_H
				#define LLVM_LIB_TARGET_RISCV_RISCVISELLOWERING_H

				#include "RISCV.h"
				#include "llvm/CodeGen/SelectionDAG.h"
				#include "llvm/Target/TargetLowering.h"

				namespace llvm {
				class RISCVSubtarget;
				namespace RISCVISD {
				enum NodeType : unsigned {
				FIRST_NUMBER = ISD::BUILTIN_OP_END,
				RET_FLAG
				};
				}

				class RISCVTargetLowering : public TargetLowering {
				const RISCVSubtarget &Subtarget;

				public:
				explicit RISCVTargetLowering(const TargetMachine &TM,
				const RISCVSubtarget &STI);

				// Provide custom lowering hooks for some operations.
				SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override;

				// This method returns the name of a target specific DAG node.
				const char *getTargetNodeName(unsigned Opcode) const override;

				private:
				// Lower incoming arguments, copy physregs into vregs
				SDValue LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv,
				bool IsVarArg,
				const SmallVectorImpl<ISD::InputArg> &Ins,
				const SDLoc &DL, SelectionDAG &DAG,
				SmallVectorImpl<SDValue> &InVals) const override;
				SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool IsVarArg,
				const SmallVectorImpl<ISD::OutputArg> &Outs,
				const SmallVectorImpl<SDValue> &OutVals, const SDLoc &DL,
				SelectionDAG &DAG) const override;
				bool shouldConvertConstantLoadToIntImm(const APInt &Imm,
				Type *Ty) const override {
				return true;
				}
				};
				}

				#endif