X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FMips%2FMipsMachineFunction.h;h=32436efa2edac9e82f5a34236179ec6562de398e;hb=9c5961b7ba252b4f0dffaf7a441a608193204eb0;hp=df40e6c748a6b052245cc1672940a468b65c00a0;hpb=6f3661fdcd10a33d225502f8b112dc5b7968ef74;p=oota-llvm.git

diff --git a/lib/Target/Mips/MipsMachineFunction.h b/lib/Target/Mips/MipsMachineFunction.h
index df40e6c748a..32436efa2ed 100644
--- a/lib/Target/Mips/MipsMachineFunction.h
+++ b/lib/Target/Mips/MipsMachineFunction.h
@@ -11,22 +11,101 @@
 //
 //===----------------------------------------------------------------------===//
 
-#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 <utility>
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/VectorExtras.h"
-#include "llvm/CodeGen/MachineFunction.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) {}
+
+  ~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(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.
@@ -37,66 +116,39 @@ private:
   /// 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 
-  unsigned MaxCallFrameSize;
-
-  /// AtomicFrameIndex - To implement atomic.swap and atomic.cmp.swap
-  /// intrinsics, it is necessary to use a temporary stack location.
-  /// This field holds the frame index of this location.
-  int AtomicFrameIndex;
-public:
-  MipsFunctionInfo(MachineFunction& MF)
-  : SRetReturnReg(0), GlobalBaseReg(0),
-    VarArgsFrameIndex(0), InArgFIRange(std::make_pair(-1, 0)),
-    OutArgFIRange(std::make_pair(-1, 0)), GPFI(0), MaxCallFrameSize(0),
-    AtomicFrameIndex(-1)
-  {}
-
-  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;
-  }
+  /// True if function has a byval argument.
+  bool HasByvalArg;
 
-  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; }
+  /// CallsEhReturn - Whether the function calls llvm.eh.return.
+  bool CallsEhReturn;
 
-  unsigned getGlobalBaseReg() const { return GlobalBaseReg; }
-  void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; }
+  /// Frame objects for spilling eh data registers.
+  int EhDataRegFI[4];
 
-  int getVarArgsFrameIndex() const { return VarArgsFrameIndex; }
-  void setVarArgsFrameIndex(int Index) { VarArgsFrameIndex = Index; }
+  // saveS2
+  bool SaveS2;
 
-  unsigned getMaxCallFrameSize() const { return MaxCallFrameSize; }
-  void setMaxCallFrameSize(unsigned S) { MaxCallFrameSize = S; }
+  /// 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;
 
-  int getAtomicFrameIndex() const { return AtomicFrameIndex; }
-  void setAtomicFrameIndex(int Index) { AtomicFrameIndex = Index; }
+  /// MipsCallEntry maps.
+  StringMap<std::unique_ptr<const MipsCallEntry>> ExternalCallEntries;
+  ValueMap<const GlobalValue *, std::unique_ptr<const MipsCallEntry>>
+      GlobalCallEntries;
 };
 
 } // end of namespace llvm
 
-#endif // MIPS_MACHINE_FUNCTION_INFO_H
+#endif