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//===---- Mips16ISelDAGToDAG.h - A Dag to Dag Inst Selector for Mips ------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Subclass of MipsDAGToDAGISel specialized for mips16.
//
//===----------------------------------------------------------------------===//
#ifndef MIPS16ISELDAGTODAG_H
#define MIPS16ISELDAGTODAG_H
#include "MipsISelDAGToDAG.h"
namespace llvm {
class Mips16DAGToDAGISel : public MipsDAGToDAGISel {
public:
explicit Mips16DAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {}
private:
std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc DL,
EVT Ty, bool HasLo, bool HasHi);
SDValue getMips16SPAliasReg();
virtual bool runOnMachineFunction(MachineFunction &MF);
void getMips16SPRefReg(SDNode *Parent, SDValue &AliasReg);
virtual bool selectAddr16(SDNode *Parent, SDValue N, SDValue &Base,
SDValue &Offset, SDValue &Alias);
virtual std::pair<bool, SDNode*> selectNode(SDNode *Node);
virtual void processFunctionAfterISel(MachineFunction &MF);
// Insert instructions to initialize the global base register in the
// first MBB of the function.
void initGlobalBaseReg(MachineFunction &MF);
void initMips16SPAliasReg(MachineFunction &MF);
};
FunctionPass *createMips16ISelDag(MipsTargetMachine &TM);
}
#endif
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