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https://github.com/c64scene-ar/llvm-6502.git
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0e6a052331
to MCRegisterInfo. Also initialize the mapping at construction time. This patch eliminate TargetRegisterInfo from TargetAsmInfo. It's another step towards fixing the layering violation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135424 91177308-0d34-0410-b5e6-96231b3b80d8
136 lines
4.6 KiB
C++
136 lines
4.6 KiB
C++
//===- X86RegisterInfo.h - X86 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 X86 implementation of the TargetRegisterInfo class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef X86REGISTERINFO_H
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#define X86REGISTERINFO_H
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#include "llvm/Target/TargetRegisterInfo.h"
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#define GET_REGINFO_HEADER
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#include "X86GenRegisterInfo.inc"
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namespace llvm {
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class Type;
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class TargetInstrInfo;
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class X86TargetMachine;
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class X86RegisterInfo : public X86GenRegisterInfo {
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public:
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X86TargetMachine &TM;
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const TargetInstrInfo &TII;
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private:
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/// Is64Bit - Is the target 64-bits.
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///
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bool Is64Bit;
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/// IsWin64 - Is the target on of win64 flavours
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///
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bool IsWin64;
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/// SlotSize - Stack slot size in bytes.
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///
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unsigned SlotSize;
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/// StackPtr - X86 physical register used as stack ptr.
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///
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unsigned StackPtr;
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/// FramePtr - X86 physical register used as frame ptr.
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///
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unsigned FramePtr;
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public:
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X86RegisterInfo(X86TargetMachine &tm, const TargetInstrInfo &tii);
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/// getX86RegNum - Returns the native X86 register number for the given LLVM
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/// register identifier.
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static unsigned getX86RegNum(unsigned RegNo);
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// FIXME: This should be tablegen'd like getDwarfRegNum is
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int getSEHRegNum(unsigned i) const;
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/// getCompactUnwindRegNum - This function maps the register to the number for
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/// compact unwind encoding. Return -1 if the register isn't valid.
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int getCompactUnwindRegNum(unsigned RegNum, bool isEH) const;
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/// Code Generation virtual methods...
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///
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/// getMatchingSuperRegClass - Return a subclass of the specified register
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/// class A so that each register in it has a sub-register of the
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/// specified sub-register index which is in the specified register class B.
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virtual const TargetRegisterClass *
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getMatchingSuperRegClass(const TargetRegisterClass *A,
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const TargetRegisterClass *B, unsigned Idx) const;
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const TargetRegisterClass*
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getLargestLegalSuperClass(const TargetRegisterClass *RC) const;
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/// getPointerRegClass - Returns a TargetRegisterClass used for pointer
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/// values.
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const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const;
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/// getCrossCopyRegClass - Returns a legal register class to copy a register
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/// in the specified class to or from. Returns NULL if it is possible to copy
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/// between a two registers of the specified class.
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const TargetRegisterClass *
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getCrossCopyRegClass(const TargetRegisterClass *RC) const;
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unsigned getRegPressureLimit(const TargetRegisterClass *RC,
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MachineFunction &MF) const;
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/// getCalleeSavedRegs - Return a null-terminated list of all of the
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/// callee-save registers on this target.
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const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
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/// getReservedRegs - Returns a bitset indexed by physical register number
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/// indicating if a register is a special register that has particular uses and
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/// should be considered unavailable at all times, e.g. SP, RA. This is used by
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/// register scavenger to determine what registers are free.
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BitVector getReservedRegs(const MachineFunction &MF) const;
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bool canRealignStack(const MachineFunction &MF) const;
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bool needsStackRealignment(const MachineFunction &MF) const;
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bool hasReservedSpillSlot(const MachineFunction &MF, unsigned Reg,
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int &FrameIdx) const;
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void eliminateCallFramePseudoInstr(MachineFunction &MF,
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MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MI) const;
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void eliminateFrameIndex(MachineBasicBlock::iterator MI,
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int SPAdj, RegScavenger *RS = NULL) const;
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// Debug information queries.
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unsigned getFrameRegister(const MachineFunction &MF) const;
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unsigned getStackRegister() const { return StackPtr; }
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// FIXME: Move to FrameInfok
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unsigned getSlotSize() const { return SlotSize; }
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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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};
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// getX86SubSuperRegister - X86 utility function. It returns the sub or super
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// register of a specific X86 register.
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// e.g. getX86SubSuperRegister(X86::EAX, EVT::i16) return X86:AX
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unsigned getX86SubSuperRegister(unsigned, EVT, bool High=false);
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} // End llvm namespace
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#endif
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