X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FX86%2FX86RegisterInfo.h;h=cc0a7b2d82c38ce0daa2b8639231f2e43b5df490;hb=d996c5b54bff05047ab628447446d5db470ee59c;hp=ee69842b100060694f351486b836d1c649143c0b;hpb=397fc4874efe9c17e737d4c5c50bd19dc3bf27f5;p=oota-llvm.git

diff --git a/lib/Target/X86/X86RegisterInfo.h b/lib/Target/X86/X86RegisterInfo.h
index ee69842b100..cc0a7b2d82c 100644
--- a/lib/Target/X86/X86RegisterInfo.h
+++ b/lib/Target/X86/X86RegisterInfo.h
@@ -11,8 +11,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef X86REGISTERINFO_H
-#define X86REGISTERINFO_H
+#ifndef LLVM_LIB_TARGET_X86_X86REGISTERINFO_H
+#define LLVM_LIB_TARGET_X86_X86REGISTERINFO_H
 
 #include "llvm/Target/TargetRegisterInfo.h"
 
@@ -22,12 +22,11 @@
 namespace llvm {
   class Type;
   class TargetInstrInfo;
-  class X86TargetMachine;
+  class X86Subtarget;
 
-class X86RegisterInfo : public X86GenRegisterInfo {
+class X86RegisterInfo final : public X86GenRegisterInfo {
 public:
-  X86TargetMachine &TM;
-  const TargetInstrInfo &TII;
+  const X86Subtarget &Subtarget;
 
 private:
   /// Is64Bit - Is the target 64-bits.
@@ -50,91 +49,92 @@ private:
   ///
   unsigned FramePtr;
 
-public:
-  X86RegisterInfo(X86TargetMachine &tm, const TargetInstrInfo &tii);
+  /// BasePtr - X86 physical register used as a base ptr in complex stack
+  /// frames. I.e., when we need a 3rd base, not just SP and FP, due to
+  /// variable size stack objects.
+  unsigned BasePtr;
 
-  /// getX86RegNum - Returns the native X86 register number for the given LLVM
-  /// register identifier.
-  static unsigned getX86RegNum(unsigned RegNo);
+public:
+  X86RegisterInfo(const X86Subtarget &STI);
 
   // FIXME: This should be tablegen'd like getDwarfRegNum is
   int getSEHRegNum(unsigned i) const;
 
-  /// getCompactUnwindRegNum - This function maps the register to the number for
-  /// compact unwind encoding. Return -1 if the register isn't valid.
-  int getCompactUnwindRegNum(unsigned RegNum, bool isEH) const;
-
   /// Code Generation virtual methods...
   ///
-  virtual bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const;
+  bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const override;
 
   /// getMatchingSuperRegClass - Return a subclass of the specified register
   /// class A so that each register in it has a sub-register of the
   /// specified sub-register index which is in the specified register class B.
-  virtual const TargetRegisterClass *
+  const TargetRegisterClass *
   getMatchingSuperRegClass(const TargetRegisterClass *A,
-                           const TargetRegisterClass *B, unsigned Idx) const;
+                           const TargetRegisterClass *B,
+                           unsigned Idx) const override;
 
-  virtual const TargetRegisterClass *
-  getSubClassWithSubReg(const TargetRegisterClass *RC, unsigned Idx) const;
+  const TargetRegisterClass *
+  getSubClassWithSubReg(const TargetRegisterClass *RC,
+                        unsigned Idx) const override;
 
   const TargetRegisterClass*
-  getLargestLegalSuperClass(const TargetRegisterClass *RC) const;
+  getLargestLegalSuperClass(const TargetRegisterClass *RC) const override;
 
   /// getPointerRegClass - Returns a TargetRegisterClass used for pointer
   /// values.
   const TargetRegisterClass *
-  getPointerRegClass(const MachineFunction &MF, unsigned Kind = 0) const;
+  getPointerRegClass(const MachineFunction &MF,
+                     unsigned Kind = 0) const override;
 
   /// getCrossCopyRegClass - Returns a legal register class to copy a register
   /// in the specified class to or from. Returns NULL if it is possible to copy
   /// between a two registers of the specified class.
   const TargetRegisterClass *
-  getCrossCopyRegClass(const TargetRegisterClass *RC) const;
+  getCrossCopyRegClass(const TargetRegisterClass *RC) const override;
 
   unsigned getRegPressureLimit(const TargetRegisterClass *RC,
-                               MachineFunction &MF) const;
+                               MachineFunction &MF) const override;
 
   /// getCalleeSavedRegs - Return a null-terminated list of all of the
   /// callee-save registers on this target.
-  const uint16_t *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
-  const uint32_t *getCallPreservedMask(CallingConv::ID) const;
+  const MCPhysReg *
+  getCalleeSavedRegs(const MachineFunction* MF) const override;
+  const uint32_t *getCallPreservedMask(CallingConv::ID) const override;
+  const uint32_t *getNoPreservedMask() const;
 
   /// getReservedRegs - Returns a bitset indexed by physical register number
   /// indicating if a register is a special register that has particular uses and
   /// should be considered unavailable at all times, e.g. SP, RA. This is used by
   /// register scavenger to determine what registers are free.
-  BitVector getReservedRegs(const MachineFunction &MF) const;
+  BitVector getReservedRegs(const MachineFunction &MF) const override;
+
+  bool hasBasePointer(const MachineFunction &MF) const;
 
   bool canRealignStack(const MachineFunction &MF) const;
 
-  bool needsStackRealignment(const MachineFunction &MF) const;
+  bool needsStackRealignment(const MachineFunction &MF) const override;
 
   bool hasReservedSpillSlot(const MachineFunction &MF, unsigned Reg,
-                            int &FrameIdx) const;
-
-  void eliminateCallFramePseudoInstr(MachineFunction &MF,
-                                     MachineBasicBlock &MBB,
-                                     MachineBasicBlock::iterator MI) const;
+                            int &FrameIdx) const override;
 
   void eliminateFrameIndex(MachineBasicBlock::iterator MI,
-                           int SPAdj, RegScavenger *RS = NULL) const;
+                           int SPAdj, unsigned FIOperandNum,
+                           RegScavenger *RS = nullptr) const override;
 
   // Debug information queries.
-  unsigned getFrameRegister(const MachineFunction &MF) const;
+  unsigned getFrameRegister(const MachineFunction &MF) const override;
   unsigned getStackRegister() const { return StackPtr; }
+  unsigned getBaseRegister() const { return BasePtr; }
   // FIXME: Move to FrameInfok
   unsigned getSlotSize() const { return SlotSize; }
-
-  // Exception handling queries.
-  unsigned getEHExceptionRegister() const;
-  unsigned getEHHandlerRegister() const;
 };
 
 // getX86SubSuperRegister - X86 utility function. It returns the sub or super
 // register of a specific X86 register.
-// e.g. getX86SubSuperRegister(X86::EAX, EVT::i16) return X86:AX
-unsigned getX86SubSuperRegister(unsigned, EVT, bool High=false);
+// e.g. getX86SubSuperRegister(X86::EAX, MVT::i16) return X86:AX
+unsigned getX86SubSuperRegister(unsigned, MVT::SimpleValueType, bool High=false);
+
+//get512BitRegister - X86 utility - returns 512-bit super register
+unsigned get512BitSuperRegister(unsigned Reg);
 
 } // End llvm namespace