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60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
//==-- MSP430ISelLowering.h - MSP430 DAG Lowering Interface ------*- C++ -*-==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the interfaces that MSP430 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_TARGET_MSP430_ISELLOWERING_H
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#define LLVM_TARGET_MSP430_ISELLOWERING_H
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#include "MSP430.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/Target/TargetLowering.h"
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namespace llvm {
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namespace MSP430ISD {
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enum {
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FIRST_NUMBER = ISD::BUILTIN_OP_END,
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/// Return with a flag operand. Operand 0 is the chain operand.
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RET_FLAG,
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/// Y = RRA X, rotate right arithmetically
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RRA
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};
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}
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class MSP430Subtarget;
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class MSP430TargetMachine;
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class MSP430TargetLowering : public TargetLowering {
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public:
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explicit MSP430TargetLowering(MSP430TargetMachine &TM);
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/// LowerOperation - Provide custom lowering hooks for some operations.
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virtual SDValue LowerOperation(SDValue Op, SelectionDAG &DAG);
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/// getTargetNodeName - This method returns the name of a target specific
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/// DAG node.
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virtual const char *getTargetNodeName(unsigned Opcode) const;
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SDValue LowerFORMAL_ARGUMENTS(SDValue Op, SelectionDAG &DAG);
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SDValue LowerRET(SDValue Op, SelectionDAG &DAG);
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SDValue LowerCCCArguments(SDValue Op, SelectionDAG &DAG);
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SDValue LowerShifts(SDValue Op, SelectionDAG &DAG);
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private:
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const MSP430Subtarget &Subtarget;
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const MSP430TargetMachine &TM;
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};
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} // namespace llvm
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#endif // LLVM_TARGET_MSP430_ISELLOWERING_H
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