70 lines
2.4 KiB
C++
70 lines
2.4 KiB
C++
//===-- CSKYISelLowering.cpp - CSKY DAG Lowering Implementation ----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the interfaces that CSKY uses to lower LLVM code into a
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// selection DAG.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_CSKY_CSKYISELLOWERING_H
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#define LLVM_LIB_TARGET_CSKY_CSKYISELLOWERING_H
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#include "MCTargetDesc/CSKYBaseInfo.h"
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#include "llvm/CodeGen/CallingConvLower.h"
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#include "llvm/CodeGen/TargetLowering.h"
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namespace llvm {
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class CSKYSubtarget;
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namespace CSKYISD {
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enum NodeType : unsigned {
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FIRST_NUMBER = ISD::BUILTIN_OP_END,
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NIE,
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NIR,
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RET,
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BITCAST_TO_LOHI
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};
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}
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class CSKYTargetLowering : public TargetLowering {
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const CSKYSubtarget &Subtarget;
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public:
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explicit CSKYTargetLowering(const TargetMachine &TM,
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const CSKYSubtarget &STI);
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EVT getSetCCResultType(const DataLayout &DL, LLVMContext &Context,
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EVT VT) const override;
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private:
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SDValue LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv,
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bool IsVarArg,
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const SmallVectorImpl<ISD::InputArg> &Ins,
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const SDLoc &DL, SelectionDAG &DAG,
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SmallVectorImpl<SDValue> &InVals) const override;
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bool CanLowerReturn(CallingConv::ID CallConv, MachineFunction &MF,
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bool IsVarArg,
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const SmallVectorImpl<ISD::OutputArg> &Outs,
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LLVMContext &Context) const override;
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SDValue LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool IsVarArg,
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const SmallVectorImpl<ISD::OutputArg> &Outs,
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const SmallVectorImpl<SDValue> &OutVals, const SDLoc &DL,
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SelectionDAG &DAG) const override;
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const char *getTargetNodeName(unsigned Opcode) const override;
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CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg) const;
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CCAssignFn *CCAssignFnForReturn(CallingConv::ID CC, bool IsVarArg) const;
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};
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} // namespace llvm
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#endif // LLVM_LIB_TARGET_CSKY_CSKYISELLOWERING_H
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