1 //===- PTXRegisterInfo.h - PTX 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 PTX implementation of the MRegisterInfo class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef PTX_REGISTER_INFO_H
15 #define PTX_REGISTER_INFO_H
16 
17 #include "llvm/Support/ErrorHandling.h"
18 #include "llvm/ADT/BitVector.h"
19 
20 #define GET_REGINFO_HEADER
21 #include "PTXGenRegisterInfo.inc"
22 
23 namespace llvm {
24 class PTXTargetMachine;
25 class MachineFunction;
26 
27 struct PTXRegisterInfo : public PTXGenRegisterInfo {
28 private:
29   const TargetInstrInfo &TII;
30 
31 public:
32   PTXRegisterInfo(PTXTargetMachine &TM,
33                   const TargetInstrInfo &tii);
34 
35   virtual const unsigned
36     *getCalleeSavedRegs(const MachineFunction *MF = 0) const {
37     static const unsigned CalleeSavedRegs[] = { 0 };
38     return CalleeSavedRegs; // save nothing
39   }
40 
getReservedRegsPTXRegisterInfo41   virtual BitVector getReservedRegs(const MachineFunction &MF) const {
42     BitVector Reserved(getNumRegs());
43     return Reserved; // reserve no regs
44   }
45 
46   virtual void eliminateFrameIndex(MachineBasicBlock::iterator II,
47                                    int SPAdj,
48                                    RegScavenger *RS = NULL) const;
49 
getFrameRegisterPTXRegisterInfo50   virtual unsigned getFrameRegister(const MachineFunction &MF) const {
51     llvm_unreachable("PTX does not have a frame register");
52     return 0;
53   }
54 }; // struct PTXRegisterInfo
55 } // namespace llvm
56 
57 #endif // PTX_REGISTER_INFO_H
58