#ifndef MIPS_MACHINE_FUNCTION_INFO_H
#define MIPS_MACHINE_FUNCTION_INFO_H
-#include <utility>
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/VectorExtras.h"
-#include "llvm/CodeGen/MachineFunction.h"
+#include "MipsSubtarget.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/ADT/ValueMap.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/Target/TargetFrameLowering.h"
+#include "llvm/Target/TargetMachine.h"
+#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);
+ virtual bool isConstant(const MachineFrameInfo *) const;
+ virtual bool isAliased(const MachineFrameInfo *) const;
+ virtual bool mayAlias(const MachineFrameInfo *) const;
+
+private:
+ virtual void printCustom(raw_ostream &O) const;
+#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)
+ {}
+
+ ~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);
private:
- /// At each function entry, two special bitmask directives must be emitted
- /// to help debugging, for CPU and FPU callee saved registers. Both need
- /// the negative offset from the final stack size and its higher registers
- /// location on the stack.
- int CPUTopSavedRegOff;
- int FPUTopSavedRegOff;
+ 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.
/// 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;
- // Range of frame object indices.
- // InArgFIRange: Range of indices of all frame objects created during call to
- // LowerFormalArguments.
- // OutArgFIRange: Range of indices of all frame objects created during call to
- // LowerCall except for the frame object for restoring $gp.
- std::pair<int, int> InArgFIRange, OutArgFIRange;
- int GPFI; // Index of the frame object for restoring $gp
- bool HasCall; // True if function has a function call.
- int MaxCallFrameSize;
-public:
- MipsFunctionInfo(MachineFunction& MF)
- : CPUTopSavedRegOff(0),
- FPUTopSavedRegOff(0), SRetReturnReg(0), GlobalBaseReg(0),
- VarArgsFrameIndex(0), InArgFIRange(std::make_pair(-1, 0)),
- OutArgFIRange(std::make_pair(-1, 0)), GPFI(0), HasCall(false),
- MaxCallFrameSize(-1)
- {}
-
- int getCPUTopSavedRegOff() const { return CPUTopSavedRegOff; }
- void setCPUTopSavedRegOff(int Off) { CPUTopSavedRegOff = Off; }
-
- int getFPUTopSavedRegOff() const { return FPUTopSavedRegOff; }
- void setFPUTopSavedRegOff(int Off) { FPUTopSavedRegOff = Off; }
+ /// True if function has a byval argument.
+ bool HasByvalArg;
- bool isInArgFI(int FI) const {
- return FI <= InArgFIRange.first && FI >= InArgFIRange.second;
- }
- void setLastInArgFI(int FI) { InArgFIRange.second = FI; }
-
- bool isOutArgFI(int FI) const {
- return FI <= OutArgFIRange.first && FI >= OutArgFIRange.second;
- }
- void extendOutArgFIRange(int FirstFI, int LastFI) {
- if (!OutArgFIRange.second)
- // this must be the first time this function was called.
- OutArgFIRange.first = FirstFI;
- OutArgFIRange.second = LastFI;
- }
-
- int getGPFI() const { return GPFI; }
- void setGPFI(int FI) { GPFI = FI; }
- bool needGPSaveRestore() const { return getGPFI(); }
- bool isGPFI(int FI) const { return GPFI && GPFI == FI; }
+ /// Size of incoming argument area.
+ unsigned IncomingArgSize;
- unsigned getSRetReturnReg() const { return SRetReturnReg; }
- void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; }
-
- unsigned getGlobalBaseReg() const { return GlobalBaseReg; }
- void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; }
-
- int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
- void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
+ /// CallsEhReturn - Whether the function calls llvm.eh.return.
+ bool CallsEhReturn;
- bool hasCall() const { return HasCall; }
- void setHasCall() { HasCall = true; }
+ /// Frame objects for spilling eh data registers.
+ int EhDataRegFI[4];
- int getMaxCallFrameSize() const { return MaxCallFrameSize; }
- void setMaxCallFrameSize(int S) { MaxCallFrameSize = S; }
+ /// MipsCallEntry maps.
+ StringMap<const MipsCallEntry *> ExternalCallEntries;
+ ValueMap<const GlobalValue *, const MipsCallEntry *> GlobalCallEntries;
};
} // end of namespace llvm