1 //===-- SystemZRegisterInfo.h - SystemZ Register Information ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the SystemZ implementation of the TargetRegisterInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef SystemZREGISTERINFO_H
15 #define SystemZREGISTERINFO_H
17 #include "llvm/Target/TargetRegisterInfo.h"
19 #define GET_REGINFO_HEADER
20 #include "SystemZGenRegisterInfo.inc"
24 class SystemZSubtarget;
25 class SystemZInstrInfo;
28 struct SystemZRegisterInfo : public SystemZGenRegisterInfo {
29 SystemZTargetMachine &TM;
30 const SystemZInstrInfo &TII;
32 SystemZRegisterInfo(SystemZTargetMachine &tm, const SystemZInstrInfo &tii);
34 /// Code Generation virtual methods...
35 const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
37 BitVector getReservedRegs(const MachineFunction &MF) const;
39 const TargetRegisterClass*
40 getMatchingSuperRegClass(const TargetRegisterClass *A,
41 const TargetRegisterClass *B, unsigned Idx) const;
43 void eliminateCallFramePseudoInstr(MachineFunction &MF,
44 MachineBasicBlock &MBB,
45 MachineBasicBlock::iterator I) const;
47 void eliminateFrameIndex(MachineBasicBlock::iterator II,
48 int SPAdj, RegScavenger *RS = NULL) const;
50 // Debug information queries.
51 unsigned getFrameRegister(const MachineFunction &MF) const;
53 // Exception handling queries.
54 unsigned getEHExceptionRegister() const;
55 unsigned getEHHandlerRegister() const;
58 } // end namespace llvm