NVPTXRegisterInfo.h revision 239310 
1//===- NVPTXRegisterInfo.h - NVPTX Register Information Impl ----*- C++ -*-===//
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// This file contains the NVPTX implementation of the TargetRegisterInfo class.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef NVPTXREGISTERINFO_H
15#define NVPTXREGISTERINFO_H
16
17#include "ManagedStringPool.h"
18#include "llvm/Target/TargetRegisterInfo.h"
19
20
21#define GET_REGINFO_HEADER
22#include "NVPTXGenRegisterInfo.inc"
23#include "llvm/Target/TargetRegisterInfo.h"
24#include <sstream>
25
26namespace llvm {
27
28// Forward Declarations.
29class TargetInstrInfo;
30class NVPTXSubtarget;
31
32class NVPTXRegisterInfo : public NVPTXGenRegisterInfo {
33private:
34  bool Is64Bit;
35  // Hold Strings that can be free'd all together with NVPTXRegisterInfo
36  ManagedStringPool     ManagedStrPool;
37
38public:
39  NVPTXRegisterInfo(const TargetInstrInfo &tii,
40                    const NVPTXSubtarget &st);
41
42
43  //------------------------------------------------------
44  // Pure virtual functions from TargetRegisterInfo
45  //------------------------------------------------------
46
47  // NVPTX callee saved registers
48  virtual const uint16_t*
49  getCalleeSavedRegs(const MachineFunction *MF = 0) const;
50
51  // NVPTX callee saved register classes
52  virtual const TargetRegisterClass* const *
53  getCalleeSavedRegClasses(const MachineFunction *MF) const;
54
55  virtual BitVector getReservedRegs(const MachineFunction &MF) const;
56
57  virtual void eliminateFrameIndex(MachineBasicBlock::iterator MI,
58                                   int SPAdj,
59                                   RegScavenger *RS=NULL) const;
60
61  void eliminateCallFramePseudoInstr(MachineFunction &MF,
62                                     MachineBasicBlock &MBB,
63                                     MachineBasicBlock::iterator I) const;
64
65  virtual int getDwarfRegNum(unsigned RegNum, bool isEH) const;
66  virtual unsigned getFrameRegister(const MachineFunction &MF) const;
67  virtual unsigned getRARegister() const;
68
69  ManagedStringPool *getStrPool() const {
70    return const_cast<ManagedStringPool *>(&ManagedStrPool);
71  }
72
73  const char *getName(unsigned RegNo) const {
74    std::stringstream O;
75    O << "reg" << RegNo;
76    return getStrPool()->getManagedString(O.str().c_str())->c_str();
77  }
78
79};
80
81
82std::string getNVPTXRegClassName (const TargetRegisterClass *RC);
83std::string getNVPTXRegClassStr (const TargetRegisterClass *RC);
84bool isNVPTXVectorRegClass (const TargetRegisterClass *RC);
85std::string getNVPTXElemClassName (const TargetRegisterClass *RC);
86int getNVPTXVectorSize (const TargetRegisterClass *RC);
87const TargetRegisterClass *getNVPTXElemClass(const TargetRegisterClass *RC);
88
89} // end namespace llvm
90
91
92#endif
93