1 //===-- MipsRegisterInfo.h - Mips Register Information Impl -----*- 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 Mips implementation of the TargetRegisterInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef MIPSREGISTERINFO_H
15 #define MIPSREGISTERINFO_H
18 #include "llvm/Target/TargetRegisterInfo.h"
20 #define GET_REGINFO_HEADER
21 #include "MipsGenRegisterInfo.inc"
27 class MipsRegisterInfo : public MipsGenRegisterInfo {
29 const MipsSubtarget &Subtarget;
32 MipsRegisterInfo(const MipsSubtarget &Subtarget);
34 /// getRegisterNumbering - Given the enum value for some register, e.g.
35 /// Mips::RA, return the number that it corresponds to (e.g. 31).
36 static unsigned getRegisterNumbering(unsigned RegEnum);
38 /// Get PIC indirect call register
39 static unsigned getPICCallReg();
41 /// Adjust the Mips stack frame.
42 void adjustMipsStackFrame(MachineFunction &MF) const;
44 /// Code Generation virtual methods...
45 const TargetRegisterClass *getPointerRegClass(const MachineFunction &MF,
48 unsigned getRegPressureLimit(const TargetRegisterClass *RC,
49 MachineFunction &MF) const;
50 const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
51 const uint32_t *getCallPreservedMask(CallingConv::ID) const;
52 static const uint32_t *getMips16RetHelperMask();
54 BitVector getReservedRegs(const MachineFunction &MF) const;
56 virtual bool requiresRegisterScavenging(const MachineFunction &MF) const;
58 virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
60 /// Stack Frame Processing Methods
61 void eliminateFrameIndex(MachineBasicBlock::iterator II,
62 int SPAdj, unsigned FIOperandNum,
63 RegScavenger *RS = NULL) const;
65 void processFunctionBeforeFrameFinalized(MachineFunction &MF,
66 RegScavenger *RS = NULL) const;
68 /// Debug information queries.
69 unsigned getFrameRegister(const MachineFunction &MF) const;
71 /// \brief Return GPR register class.
72 virtual const TargetRegisterClass *intRegClass(unsigned Size) const = 0;
75 virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo,
76 int FrameIndex, uint64_t StackSize,
77 int64_t SPOffset) const = 0;
80 } // end namespace llvm