MipsSEISelDAGToDAG.h revision a2b2200ff8684ba23c64b24c0128a78f4b6e3c73 
1//===-- MipsSEISelDAGToDAG.h - A Dag to Dag Inst Selector for MipsSE -----===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// Subclass of MipsDAGToDAGISel specialized for mips32/64.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef MIPSSEISELDAGTODAG_H
15#define MIPSSEISELDAGTODAG_H
16
17#include "MipsISelDAGToDAG.h"
18
19namespace llvm {
20
21class MipsSEDAGToDAGISel : public MipsDAGToDAGISel {
22
23public:
24  explicit MipsSEDAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {}
25
26private:
27
28  virtual bool runOnMachineFunction(MachineFunction &MF);
29
30  void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
31                             MachineFunction &MF);
32
33  bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&);
34
35  std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, DebugLoc dl,
36                                         EVT Ty, bool HasLo, bool HasHi);
37
38  SDNode *selectAddESubE(unsigned MOp, SDValue InFlag, SDValue CmpLHS,
39                         DebugLoc DL, SDNode *Node) const;
40
41  virtual bool selectAddrRegImm(SDValue Addr, SDValue &Base,
42                                SDValue &Offset) const;
43
44  virtual bool selectAddrDefault(SDValue Addr, SDValue &Base,
45                                 SDValue &Offset) const;
46
47  virtual bool selectIntAddr(SDValue Addr, SDValue &Base,
48                             SDValue &Offset) const;
49
50  virtual std::pair<bool, SDNode*> selectNode(SDNode *Node);
51
52  virtual void processFunctionAfterISel(MachineFunction &MF);
53
54  // Insert instructions to initialize the global base register in the
55  // first MBB of the function.
56  void initGlobalBaseReg(MachineFunction &MF);
57};
58
59FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
60
61}
62
63#endif
64