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Diffstat (limited to 'contrib/llvm/lib/Target/Mips/MipsMachineFunction.h')
-rw-r--r-- | contrib/llvm/lib/Target/Mips/MipsMachineFunction.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/Mips/MipsMachineFunction.h b/contrib/llvm/lib/Target/Mips/MipsMachineFunction.h new file mode 100644 index 0000000..61260e5 --- /dev/null +++ b/contrib/llvm/lib/Target/Mips/MipsMachineFunction.h @@ -0,0 +1,153 @@ +//===-- MipsMachineFunctionInfo.h - Private data used for Mips ----*- C++ -*-=// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file declares the Mips specific subclass of MachineFunctionInfo. +// +//===----------------------------------------------------------------------===// + +#ifndef MIPS_MACHINE_FUNCTION_INFO_H +#define MIPS_MACHINE_FUNCTION_INFO_H + +#include "Mips16HardFloatInfo.h" +#include "llvm/ADT/StringMap.h" +#include "llvm/CodeGen/MachineFrameInfo.h" +#include "llvm/CodeGen/MachineFunction.h" +#include "llvm/CodeGen/MachineMemOperand.h" +#include "llvm/CodeGen/PseudoSourceValue.h" +#include "llvm/IR/GlobalValue.h" +#include "llvm/IR/ValueMap.h" +#include "llvm/Target/TargetFrameLowering.h" +#include "llvm/Target/TargetMachine.h" +#include <map> +#include <string> +#include <utility> + +namespace llvm { + +/// \brief A class derived from PseudoSourceValue that represents a GOT entry +/// resolved by lazy-binding. +class MipsCallEntry : public PseudoSourceValue { +public: + explicit MipsCallEntry(const StringRef &N); + explicit MipsCallEntry(const GlobalValue *V); + bool isConstant(const MachineFrameInfo *) const override; + bool isAliased(const MachineFrameInfo *) const override; + bool mayAlias(const MachineFrameInfo *) const override; + +private: + void printCustom(raw_ostream &O) const override; +#ifndef NDEBUG + std::string Name; + const GlobalValue *Val; +#endif +}; + +/// MipsFunctionInfo - This class is derived from MachineFunction private +/// Mips target-specific information for each MachineFunction. +class MipsFunctionInfo : public MachineFunctionInfo { +public: + MipsFunctionInfo(MachineFunction &MF) + : MF(MF), SRetReturnReg(0), GlobalBaseReg(0), Mips16SPAliasReg(0), + VarArgsFrameIndex(0), CallsEhReturn(false), SaveS2(false), + MoveF64ViaSpillFI(-1) {} + + ~MipsFunctionInfo(); + + unsigned getSRetReturnReg() const { return SRetReturnReg; } + void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; } + + bool globalBaseRegSet() const; + unsigned getGlobalBaseReg(); + + bool mips16SPAliasRegSet() const; + unsigned getMips16SPAliasReg(); + + int getVarArgsFrameIndex() const { return VarArgsFrameIndex; } + void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; } + + bool hasByvalArg() const { return HasByvalArg; } + void setFormalArgInfo(unsigned Size, bool HasByval) { + IncomingArgSize = Size; + HasByvalArg = HasByval; + } + + unsigned getIncomingArgSize() const { return IncomingArgSize; } + + bool callsEhReturn() const { return CallsEhReturn; } + void setCallsEhReturn() { CallsEhReturn = true; } + + void createEhDataRegsFI(); + int getEhDataRegFI(unsigned Reg) const { return EhDataRegFI[Reg]; } + bool isEhDataRegFI(int FI) const; + + /// \brief Create a MachinePointerInfo that has a MipsCallEntr object + /// representing a GOT entry for an external function. + MachinePointerInfo callPtrInfo(const StringRef &Name); + + /// \brief Create a MachinePointerInfo that has a MipsCallEntr object + /// representing a GOT entry for a global function. + MachinePointerInfo callPtrInfo(const GlobalValue *Val); + + void setSaveS2() { SaveS2 = true; } + bool hasSaveS2() const { return SaveS2; } + + int getMoveF64ViaSpillFI(const TargetRegisterClass *RC); + + std::map<const char *, const llvm::Mips16HardFloatInfo::FuncSignature *> + StubsNeeded; + +private: + virtual void anchor(); + + MachineFunction& MF; + /// SRetReturnReg - Some subtargets require that sret lowering includes + /// returning the value of the returned struct in a register. This field + /// holds the virtual register into which the sret argument is passed. + unsigned SRetReturnReg; + + /// GlobalBaseReg - keeps track of the virtual register initialized for + /// use as the global base register. This is used for PIC in some PIC + /// relocation models. + unsigned GlobalBaseReg; + + /// Mips16SPAliasReg - keeps track of the virtual register initialized for + /// use as an alias for SP for use in load/store of halfword/byte from/to + /// the stack + unsigned Mips16SPAliasReg; + + /// VarArgsFrameIndex - FrameIndex for start of varargs area. + int VarArgsFrameIndex; + + /// True if function has a byval argument. + bool HasByvalArg; + + /// Size of incoming argument area. + unsigned IncomingArgSize; + + /// CallsEhReturn - Whether the function calls llvm.eh.return. + bool CallsEhReturn; + + /// Frame objects for spilling eh data registers. + int EhDataRegFI[4]; + + // saveS2 + bool SaveS2; + + /// FrameIndex for expanding BuildPairF64 nodes to spill and reload when the + /// O32 FPXX ABI is enabled. -1 is used to denote invalid index. + int MoveF64ViaSpillFI; + + /// MipsCallEntry maps. + StringMap<const MipsCallEntry *> ExternalCallEntries; + ValueMap<const GlobalValue *, const MipsCallEntry *> GlobalCallEntries; +}; + +} // end of namespace llvm + +#endif // MIPS_MACHINE_FUNCTION_INFO_H |