//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Bruno Cardoso Lopes and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
-#ifndef MIPS_MACHINE_FUNCTION_INFO_H
-#define MIPS_MACHINE_FUNCTION_INFO_H
+#ifndef LLVM_LIB_TARGET_MIPS_MIPSMACHINEFUNCTION_H
+#define LLVM_LIB_TARGET_MIPS_MIPSMACHINEFUNCTION_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(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) {}
-private:
- /// Holds for each function where on the stack
- /// the Frame Pointer must be saved
- int FPStackOffset;
+ ~MipsFunctionInfo();
- /// Holds for each function where on the stack
- /// the Return Address must be saved
- int RAStackOffset;
+ unsigned getSRetReturnReg() const { return SRetReturnReg; }
+ void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
-public:
- MipsFunctionInfo(MachineFunction& MF)
- : FPStackOffset(0), RAStackOffset(0)
- {}
+ bool globalBaseRegSet() const;
+ unsigned getGlobalBaseReg();
- int getFPStackOffset() const { return FPStackOffset; }
- void setFPStackOffset(int Off) { FPStackOffset = Off; }
+ bool mips16SPAliasRegSet() const;
+ unsigned getMips16SPAliasReg();
- int getRAStackOffset() const { return RAStackOffset; }
- void setRAStackOffset(int Off) { RAStackOffset = Off; }
+ int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
+ void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
- int getTopSavedRegOffset() const {
- return (RAStackOffset > FPStackOffset) ?
- (RAStackOffset) : (FPStackOffset);
+ 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(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