1 //===- XCoreRegisterInfo.h - XCore 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 XCore implementation of the MRegisterInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef XCOREREGISTERINFO_H
15 #define XCOREREGISTERINFO_H
17 #include "llvm/Target/TargetRegisterInfo.h"
19 #define GET_REGINFO_HEADER
20 #include "XCoreGenRegisterInfo.inc"
24 class TargetInstrInfo;
26 struct XCoreRegisterInfo : public XCoreGenRegisterInfo {
28 const TargetInstrInfo &TII;
30 void loadConstant(MachineBasicBlock &MBB,
31 MachineBasicBlock::iterator I,
32 unsigned DstReg, int64_t Value, DebugLoc dl) const;
34 void storeToStack(MachineBasicBlock &MBB,
35 MachineBasicBlock::iterator I,
36 unsigned SrcReg, int Offset, DebugLoc dl) const;
38 void loadFromStack(MachineBasicBlock &MBB,
39 MachineBasicBlock::iterator I,
40 unsigned DstReg, int Offset, DebugLoc dl) const;
43 XCoreRegisterInfo(const TargetInstrInfo &tii);
45 /// Code Generation virtual methods...
47 const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
49 BitVector getReservedRegs(const MachineFunction &MF) const;
51 bool requiresRegisterScavenging(const MachineFunction &MF) const;
53 bool useFPForScavengingIndex(const MachineFunction &MF) const;
55 void eliminateCallFramePseudoInstr(MachineFunction &MF,
56 MachineBasicBlock &MBB,
57 MachineBasicBlock::iterator I) const;
59 void eliminateFrameIndex(MachineBasicBlock::iterator II,
60 int SPAdj, RegScavenger *RS = NULL) const;
62 // Debug information queries.
63 unsigned getFrameRegister(const MachineFunction &MF) const;
65 //! Return the array of argument passing registers
67 \note The size of this array is returned by getArgRegsSize().
69 static const unsigned *getArgRegs(const MachineFunction *MF = 0);
71 //! Return the size of the argument passing register array
72 static unsigned getNumArgRegs(const MachineFunction *MF = 0);
74 //! Return whether to emit frame moves
75 static bool needsFrameMoves(const MachineFunction &MF);
78 } // end namespace llvm