llvm-6502/lib/Target/SparcV9/SparcV9RegisterInfo.h

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//===- SparcV9RegisterInfo.h - SparcV9 Register Information Impl -*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the SparcV9 implementation of the MRegisterInfo class.
// It also contains stuff needed to instantiate that class, which would
// ordinarily be provided by TableGen.
//
//===----------------------------------------------------------------------===//
#ifndef SPARCV9REGISTERINFO_H
#define SPARCV9REGISTERINFO_H
#include "llvm/Target/MRegisterInfo.h"
namespace llvm {
struct SparcV9RegisterInfo : public MRegisterInfo {
SparcV9RegisterInfo ();
const unsigned *getCalleeSaveRegs() const;
const TargetRegisterClass* const *getCalleeSaveRegClasses() const {
return 0;
}
// The rest of these are stubs... for now.
void storeRegToStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned SrcReg, int FrameIndex,
const TargetRegisterClass *RC) const;
void loadRegFromStackSlot(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, int FrameIndex,
const TargetRegisterClass *RC) const;
void copyRegToReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *RC) const;
void eliminateFrameIndex (MachineBasicBlock::iterator MI) const;
void emitPrologue (MachineFunction &MF) const;
void emitEpilogue (MachineFunction &MF, MachineBasicBlock &MBB) const;
};
} // End llvm namespace
//===----------------------------------------------------------------------===//
//
// The second section of this file (immediately following) contains
// a *handwritten* SparcV9 unified register number enumeration, which
// provides a flat namespace containing all the SparcV9 unified
// register numbers.
//
// It would ordinarily be contained in the file SparcV9GenRegisterNames.inc
// if we were using TableGen to generate the register file description
// automatically.
//
//===----------------------------------------------------------------------===//
namespace llvm {
namespace SparcV9 {
enum {
// FIXME - Register 0 is not a "non-register" like it is on other targets!!
// SparcV9IntRegClass(IntRegClassID)
// - unified register numbers 0 ... 31 (32 regs)
/* 0 */ o0, o1, o2, o3, o4,
/* 5 */ o5, o7, l0, l1, l2,
/* 10 */ l3, l4, l5, l6, l7,
/* 15 */ i0, i1, i2, i3, i4,
/* 20 */ i5, i6, i7, g0, g1, // i6 is frame ptr, i7 is ret addr, g0 is zero
/* 25 */ g2, g3, g4, g5, g6,
/* 30 */ g7, o6, // o6 is stack ptr
// SparcV9FloatRegClass(FloatRegClassID)
// - regs 32 .. 63 are FPSingleRegType, 64 .. 95 are FPDoubleRegType
// - unified register numbers 32 ... 95 (64 regs)
/* 32 */ f0, f1, f2,
/* 35 */ f3, f4, f5, f6, f7,
/* 40 */ f8, f9, f10, f11, f12,
/* 45 */ f13, f14, f15, f16, f17,
/* 50 */ f18, f19, f20, f21, f22,
/* 55 */ f23, f24, f25, f26, f27,
/* 60 */ f28, f29, f30, f31, f32,
/* 65 */ f33, f34, f35, f36, f37,
/* 70 */ f38, f39, f40, f41, f42,
/* 75 */ f43, f44, f45, f46, f47,
/* 80 */ f48, f49, f50, f51, f52,
/* 85 */ f53, f54, f55, f56, f57,
/* 90 */ f58, f59, f60, f61, f62,
/* 95 */ f63,
// SparcV9IntCCRegClass(IntCCRegClassID)
// - unified register numbers 96 ... 98 (3 regs)
/* 96 */ xcc, icc, ccr,
// SparcV9FloatCCRegClass(FloatCCRegClassID)
// - unified register numbers 99 ... 102 (4 regs)
/* 99 */ fcc0, fcc1, fcc2, fcc3,
// SparcV9SpecialRegClass(SpecialRegClassID)
// - unified register number 103 (1 reg)
/* 103 */ fsr
};
} // end namespace SparcV9
} // end namespace llvm
#endif // SPARCV9REGISTERINFO_H