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https://github.com/c64scene-ar/llvm-6502.git
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6f07bd6ae8
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105322 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
//===- MBlazeRegisterInfo.h - MBlaze Register Information Impl --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the MBlaze implementation of the TargetRegisterInfo
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// class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MBLAZEREGISTERINFO_H
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#define MBLAZEREGISTERINFO_H
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#include "MBlaze.h"
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#include "llvm/Target/TargetRegisterInfo.h"
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#include "MBlazeGenRegisterInfo.h.inc"
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namespace llvm {
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class MBlazeSubtarget;
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class TargetInstrInfo;
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class Type;
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namespace MBlaze {
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/// SubregIndex - The index of various sized subregister classes. Note that
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/// these indices must be kept in sync with the class indices in the
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/// MBlazeRegisterInfo.td file.
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enum SubregIndex {
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SUBREG_FPEVEN = 1, SUBREG_FPODD = 2
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};
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}
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struct MBlazeRegisterInfo : public MBlazeGenRegisterInfo {
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const MBlazeSubtarget &Subtarget;
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const TargetInstrInfo &TII;
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MBlazeRegisterInfo(const MBlazeSubtarget &Subtarget,
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const TargetInstrInfo &tii);
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/// getRegisterNumbering - Given the enum value for some register, e.g.
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/// MBlaze::RA, return the number that it corresponds to (e.g. 31).
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static unsigned getRegisterNumbering(unsigned RegEnum);
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static unsigned getRegisterFromNumbering(unsigned RegEnum);
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/// Get PIC indirect call register
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static unsigned getPICCallReg();
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/// Adjust the MBlaze stack frame.
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void adjustMBlazeStackFrame(MachineFunction &MF) const;
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/// Code Generation virtual methods...
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const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
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BitVector getReservedRegs(const MachineFunction &MF) const;
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bool hasFP(const MachineFunction &MF) const;
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void eliminateCallFramePseudoInstr(MachineFunction &MF,
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MachineBasicBlock &MBB,
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MachineBasicBlock::iterator I) const;
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/// Stack Frame Processing Methods
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unsigned eliminateFrameIndex(MachineBasicBlock::iterator II,
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int SPAdj, FrameIndexValue *Value = NULL,
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RegScavenger *RS = NULL) const;
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void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
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void emitPrologue(MachineFunction &MF) const;
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void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
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/// Debug information queries.
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unsigned getRARegister() const;
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unsigned getFrameRegister(const MachineFunction &MF) const;
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/// Exception handling queries.
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unsigned getEHExceptionRegister() const;
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unsigned getEHHandlerRegister() const;
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/// targetHandlesStackFrameRounding - Returns true if the target is
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/// responsible for rounding up the stack frame (probably at emitPrologue
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/// time).
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bool targetHandlesStackFrameRounding() const { return true; }
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int getDwarfRegNum(unsigned RegNum, bool isEH) const;
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};
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} // end namespace llvm
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#endif
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