forked from OSchip/llvm-project
100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
//===-- MipsMachineFunctionInfo.h - Private data used for Mips ----*- 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 declares the Mips specific subclass of MachineFunctionInfo.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MIPS_MACHINE_FUNCTION_INFO_H
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#define MIPS_MACHINE_FUNCTION_INFO_H
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#include "MipsSubtarget.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/Target/TargetFrameLowering.h"
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#include "llvm/Target/TargetMachine.h"
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#include <utility>
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namespace llvm {
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/// MipsFunctionInfo - This class is derived from MachineFunction private
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/// Mips target-specific information for each MachineFunction.
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class MipsFunctionInfo : public MachineFunctionInfo {
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virtual void anchor();
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MachineFunction& MF;
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/// SRetReturnReg - Some subtargets require that sret lowering includes
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/// returning the value of the returned struct in a register. This field
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/// holds the virtual register into which the sret argument is passed.
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unsigned SRetReturnReg;
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/// GlobalBaseReg - keeps track of the virtual register initialized for
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/// use as the global base register. This is used for PIC in some PIC
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/// relocation models.
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unsigned GlobalBaseReg;
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/// Mips16SPAliasReg - keeps track of the virtual register initialized for
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/// use as an alias for SP for use in load/store of halfword/byte from/to
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/// the stack
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unsigned Mips16SPAliasReg;
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/// VarArgsFrameIndex - FrameIndex for start of varargs area.
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int VarArgsFrameIndex;
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/// True if function has a byval argument.
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bool HasByvalArg;
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/// Size of incoming argument area.
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unsigned IncomingArgSize;
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/// CallsEhReturn - Whether the function calls llvm.eh.return.
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bool CallsEhReturn;
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/// Frame objects for spilling eh data registers.
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int EhDataRegFI[4];
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public:
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MipsFunctionInfo(MachineFunction& MF)
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: MF(MF), SRetReturnReg(0), GlobalBaseReg(0), Mips16SPAliasReg(0),
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VarArgsFrameIndex(0), CallsEhReturn(false)
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{}
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unsigned getSRetReturnReg() const { return SRetReturnReg; }
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void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
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bool globalBaseRegSet() const;
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unsigned getGlobalBaseReg();
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bool mips16SPAliasRegSet() const;
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unsigned getMips16SPAliasReg();
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int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
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void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
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bool hasByvalArg() const { return HasByvalArg; }
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void setFormalArgInfo(unsigned Size, bool HasByval) {
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IncomingArgSize = Size;
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HasByvalArg = HasByval;
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}
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unsigned getIncomingArgSize() const { return IncomingArgSize; }
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bool callsEhReturn() const { return CallsEhReturn; }
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void setCallsEhReturn() { CallsEhReturn = true; }
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void createEhDataRegsFI();
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int getEhDataRegFI(unsigned Reg) const { return EhDataRegFI[Reg]; }
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bool isEhDataRegFI(int FI) const;
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};
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} // end of namespace llvm
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#endif // MIPS_MACHINE_FUNCTION_INFO_H
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