1 //===-- MipsMachineFunctionInfo.h - Private data used for Mips ----*- 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 declares the Mips specific subclass of MachineFunctionInfo.
12 //===----------------------------------------------------------------------===//
14 #ifndef MIPS_MACHINE_FUNCTION_INFO_H
15 #define MIPS_MACHINE_FUNCTION_INFO_H
17 #include "MipsSubtarget.h"
18 #include "llvm/CodeGen/MachineFrameInfo.h"
19 #include "llvm/CodeGen/MachineFunction.h"
20 #include "llvm/Target/TargetFrameLowering.h"
21 #include "llvm/Target/TargetMachine.h"
26 /// MipsFunctionInfo - This class is derived from MachineFunction private
27 /// Mips target-specific information for each MachineFunction.
28 class MipsFunctionInfo : public MachineFunctionInfo {
30 MipsFunctionInfo(MachineFunction& MF)
31 : MF(MF), SRetReturnReg(0), GlobalBaseReg(0), Mips16SPAliasReg(0),
32 VarArgsFrameIndex(0), CallsEhReturn(false)
35 unsigned getSRetReturnReg() const { return SRetReturnReg; }
36 void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
38 bool globalBaseRegSet() const;
39 unsigned getGlobalBaseReg();
41 bool mips16SPAliasRegSet() const;
42 unsigned getMips16SPAliasReg();
44 int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
45 void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
47 bool hasByvalArg() const { return HasByvalArg; }
48 void setFormalArgInfo(unsigned Size, bool HasByval) {
49 IncomingArgSize = Size;
50 HasByvalArg = HasByval;
53 unsigned getIncomingArgSize() const { return IncomingArgSize; }
55 bool callsEhReturn() const { return CallsEhReturn; }
56 void setCallsEhReturn() { CallsEhReturn = true; }
58 void createEhDataRegsFI();
59 int getEhDataRegFI(unsigned Reg) const { return EhDataRegFI[Reg]; }
60 bool isEhDataRegFI(int FI) const;
63 virtual void anchor();
66 /// SRetReturnReg - Some subtargets require that sret lowering includes
67 /// returning the value of the returned struct in a register. This field
68 /// holds the virtual register into which the sret argument is passed.
69 unsigned SRetReturnReg;
71 /// GlobalBaseReg - keeps track of the virtual register initialized for
72 /// use as the global base register. This is used for PIC in some PIC
73 /// relocation models.
74 unsigned GlobalBaseReg;
76 /// Mips16SPAliasReg - keeps track of the virtual register initialized for
77 /// use as an alias for SP for use in load/store of halfword/byte from/to
79 unsigned Mips16SPAliasReg;
81 /// VarArgsFrameIndex - FrameIndex for start of varargs area.
82 int VarArgsFrameIndex;
84 /// True if function has a byval argument.
87 /// Size of incoming argument area.
88 unsigned IncomingArgSize;
90 /// CallsEhReturn - Whether the function calls llvm.eh.return.
93 /// Frame objects for spilling eh data registers.
97 } // end of namespace llvm
99 #endif // MIPS_MACHINE_FUNCTION_INFO_H