Merged this file into the SparcV9 target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13128 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Target/TargetRegInfo.h b/include/llvm/Target/TargetRegInfo.h
deleted file mode 100644 (file)
index 3b268ce..0000000
--- a/include/llvm/Target/TargetRegInfo.h
+++ /dev/null
@@ -1,296 +0,0 @@
-//===-- llvm/Target/TargetRegInfo.h - Target Register Info ------*- C++ -*-===//
-// 
-//                     The LLVM Compiler Infrastructure
-//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
-//===----------------------------------------------------------------------===//
-//
-// This file is used to describe the register system of a target to the
-// register allocator.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_TARGET_TARGETREGINFO_H
-#define LLVM_TARGET_TARGETREGINFO_H
-
-#include "Support/hash_map"
-#include <string>
-#include <cassert>
-
-namespace llvm {
-
-class TargetMachine;
-class IGNode;
-class Type;
-class Value;
-class LiveRangeInfo;
-class Function;
-class LiveRange;
-class AddedInstrns;
-class MachineInstr;
-class BasicBlock;
-
-///----------------------------------------------------------------------------
-///   Interface to description of machine register class (e.g., int reg class
-///   float reg class etc)
-///
-class TargetRegClassInfo {
-protected:
-  const unsigned RegClassID;        // integer ID of a reg class
-  const unsigned NumOfAvailRegs;    // # of avail for coloring -without SP etc.
-  const unsigned NumOfAllRegs;      // # of all registers -including SP,g0 etc.
-  
-public:
-  inline unsigned getRegClassID()     const { return RegClassID; }
-  inline unsigned getNumOfAvailRegs() const { return NumOfAvailRegs; }
-  inline unsigned getNumOfAllRegs()   const { return NumOfAllRegs; }
-
-  // This method marks the registers used for a given register number.
-  // This defaults to marking a single register but may mark multiple
-  // registers when a single number denotes paired registers.
-  // 
-  virtual void markColorsUsed(unsigned RegInClass,
-                              int UserRegType,
-                              int RegTypeWanted,
-                              std::vector<bool> &IsColorUsedArr) const {
-    assert(RegInClass < NumOfAllRegs && RegInClass < IsColorUsedArr.size());
-    assert(UserRegType == RegTypeWanted &&
-       "Default method is probably incorrect for class with multiple types.");
-    IsColorUsedArr[RegInClass] = true;
-  }
-
-  // This method finds unused registers of the specified register type,
-  // using the given "used" flag array IsColorUsedArr.  It defaults to
-  // checking a single entry in the array directly, but that can be overridden
-  // for paired registers and other such silliness.
-  // It returns -1 if no unused color is found.
-  // 
-  virtual int findUnusedColor(int RegTypeWanted,
-                          const std::vector<bool> &IsColorUsedArr) const {
-    // find first unused color in the IsColorUsedArr directly
-    unsigned NC = this->getNumOfAvailRegs();
-    assert(IsColorUsedArr.size() >= NC && "Invalid colors-used array");
-    for (unsigned c = 0; c < NC; c++)
-      if (!IsColorUsedArr[c])
-        return c;
-    return -1;
-  }
-
-  // This method should find a color which is not used by neighbors
-  // (i.e., a false position in IsColorUsedArr) and 
-  virtual void colorIGNode(IGNode *Node,
-                           const std::vector<bool> &IsColorUsedArr) const = 0;
-
-  // Check whether a specific register is volatile, i.e., whether it is not
-  // preserved across calls
-  virtual bool isRegVolatile(int Reg) const = 0;
-
-  // Check whether a specific register is modified as a side-effect of the
-  // call instruction itself,
-  virtual bool modifiedByCall(int Reg) const {return false; }
-
-  virtual const char* const getRegName(unsigned reg) const = 0;
-
-  TargetRegClassInfo(unsigned ID, unsigned NVR, unsigned NAR)
-    : RegClassID(ID), NumOfAvailRegs(NVR), NumOfAllRegs(NAR) {}
-};
-
-
-
-//---------------------------------------------------------------------------
-/// TargetRegInfo - Interface to register info of target machine
-///
-class TargetRegInfo {
-  TargetRegInfo(const TargetRegInfo &);  // DO NOT IMPLEMENT
-  void operator=(const TargetRegInfo &); // DO NOT IMPLEMENT
-protected:
-  // A vector of all machine register classes
-  //
-  std::vector<const TargetRegClassInfo *> MachineRegClassArr;    
-  
-public:
-  const TargetMachine &target;
-
-  // A register can be initialized to an invalid number. That number can
-  // be obtained using this method.
-  //
-  static int getInvalidRegNum() { return -1; }
-
-  TargetRegInfo(const TargetMachine& tgt) : target(tgt) { }
-  virtual ~TargetRegInfo() {
-    for (unsigned i = 0, e = MachineRegClassArr.size(); i != e; ++i)
-      delete MachineRegClassArr[i];
-  }
-
-  // According the definition of a MachineOperand class, a Value in a
-  // machine instruction can go into either a normal register or a 
-  // condition code register. If isCCReg is true below, the ID of the condition
-  // code register class will be returned. Otherwise, the normal register
-  // class (eg. int, float) must be returned.
-  virtual unsigned getRegClassIDOfType  (const Type *type,
-                                        bool isCCReg = false) const = 0;
-  virtual unsigned getRegClassIDOfRegType(int regType) const = 0;
-
-  unsigned getRegClassIDOfReg(int unifiedRegNum) const {
-    unsigned classId = 0;
-    (void) getClassRegNum(unifiedRegNum, classId);
-    return classId;
-  }
-
-  unsigned int getNumOfRegClasses() const { 
-    return MachineRegClassArr.size(); 
-  }  
-
-  const TargetRegClassInfo *getMachineRegClass(unsigned i) const { 
-    return MachineRegClassArr[i]; 
-  }
-
-  // returns the register that is hardwired to zero if any (-1 if none)
-  //
-  virtual unsigned getZeroRegNum() const = 0;
-
-  // Number of registers used for passing int args (usually 6: %o0 - %o5)
-  // and float args (usually 32: %f0 - %f31)
-  //
-  virtual unsigned const getNumOfIntArgRegs() const   = 0;
-  virtual unsigned const getNumOfFloatArgRegs() const = 0;
-
-  // The following methods are used to color special live ranges (e.g.
-  // method args and return values etc.) with specific hardware registers
-  // as required. See SparcRegInfo.cpp for the implementation for Sparc.
-  //
-  virtual void suggestRegs4MethodArgs(const Function *Func, 
-                                      LiveRangeInfo& LRI) const = 0;
-
-  virtual void suggestRegs4CallArgs(MachineInstr *CallI, 
-                                    LiveRangeInfo& LRI) const = 0;
-
-  virtual void suggestReg4RetValue(MachineInstr *RetI, 
-                                  LiveRangeInfo& LRI) const = 0;
-
-  virtual void colorMethodArgs(const Function *Func,
-                           LiveRangeInfo &LRI,
-                           std::vector<MachineInstr*>& InstrnsBefore,
-                           std::vector<MachineInstr*>& InstrnsAfter) const = 0;
-
-  // The following methods are used to generate "copy" machine instructions
-  // for an architecture. Currently they are used in TargetRegClass 
-  // interface. However, they can be moved to TargetInstrInfo interface if
-  // necessary.
-  //
-  // The function regTypeNeedsScratchReg() can be used to check whether a
-  // scratch register is needed to copy a register of type `regType' to
-  // or from memory.  If so, such a scratch register can be provided by
-  // the caller (e.g., if it knows which regsiters are free); otherwise
-  // an arbitrary one will be chosen and spilled by the copy instructions.
-  // If a scratch reg is needed, the reg. type that must be used
-  // for scratch registers is returned in scratchRegType.
-  //
-  virtual bool regTypeNeedsScratchReg(int RegType,
-                                      int& scratchRegType) const = 0;
-  
-  virtual void cpReg2RegMI(std::vector<MachineInstr*>& mvec,
-                           unsigned SrcReg, unsigned DestReg,
-                           int RegType) const = 0;
-  
-  virtual void cpReg2MemMI(std::vector<MachineInstr*>& mvec,
-                           unsigned SrcReg, unsigned DestPtrReg, int Offset,
-                           int RegType, int scratchReg = -1) const=0;
-
-  virtual void cpMem2RegMI(std::vector<MachineInstr*>& mvec,
-                           unsigned SrcPtrReg, int Offset, unsigned DestReg,
-                           int RegType, int scratchReg = -1) const=0;
-  
-  virtual void cpValue2Value(Value *Src, Value *Dest,
-                             std::vector<MachineInstr*>& mvec) const = 0;
-
-  // Check whether a specific register is volatile, i.e., whether it is not
-  // preserved across calls
-  inline virtual bool isRegVolatile(int RegClassID, int Reg) const {
-    return MachineRegClassArr[RegClassID]->isRegVolatile(Reg);
-  }
-
-  // Check whether a specific register is modified as a side-effect of the
-  // call instruction itself,
-  inline virtual bool modifiedByCall(int RegClassID, int Reg) const {
-    return MachineRegClassArr[RegClassID]->modifiedByCall(Reg);
-  }
-  
-  // Returns the reg used for pushing the address when a method is called.
-  // This can be used for other purposes between calls
-  //
-  virtual unsigned getCallAddressReg() const = 0;
-
-  // Returns the register containing the return address.
-  //It should be made sure that this 
-  // register contains the return value when a return instruction is reached.
-  //
-  virtual unsigned getReturnAddressReg() const = 0; 
-  
-
-  // Each register class has a separate space for register IDs. To convert
-  // a regId in a register class to a common Id, or vice versa,
-  // we use the folloing two methods.
-  //
-  // This method converts from class reg. number to unified register number.
-  int getUnifiedRegNum(unsigned regClassID, int reg) const {
-    if (reg == getInvalidRegNum()) { return getInvalidRegNum(); }
-    assert(regClassID < getNumOfRegClasses() && "Invalid register class");
-    int totalRegs = 0;
-    for (unsigned rcid = 0; rcid < regClassID; ++rcid)
-      totalRegs += MachineRegClassArr[rcid]->getNumOfAllRegs();
-    return reg + totalRegs;
-  }
-
-  // This method converts the unified number to the number in its class,
-  // and returns the class ID in regClassID.
-  int getClassRegNum(int uRegNum, unsigned& regClassID) const {
-    if (uRegNum == getInvalidRegNum()) { return getInvalidRegNum(); }
-    
-    int totalRegs = 0, rcid = 0, NC = getNumOfRegClasses();  
-    while (rcid < NC &&
-           uRegNum>= totalRegs+(int)MachineRegClassArr[rcid]->getNumOfAllRegs())
-    {
-      totalRegs += MachineRegClassArr[rcid]->getNumOfAllRegs();
-      rcid++;
-    }
-    if (rcid == NC) {
-      assert(0 && "getClassRegNum(): Invalid register number");
-      return getInvalidRegNum();
-    }
-    regClassID = rcid;
-    return uRegNum - totalRegs;
-  }
-  
-  // Returns the assembly-language name of the specified machine register.
-  // 
-  const char * const getUnifiedRegName(int UnifiedRegNum) const {
-    unsigned regClassID = getNumOfRegClasses(); // initialize to invalid value
-    int regNumInClass = getClassRegNum(UnifiedRegNum, regClassID);
-    return MachineRegClassArr[regClassID]->getRegName(regNumInClass);
-  }
-
-  // Get the register type for a register identified different ways.
-  // Note that getRegTypeForLR(LR) != getRegTypeForDataType(LR->getType())!
-  // The reg class of a LR depends both on the Value types in it and whether
-  // they are CC registers or not (for example).
-  virtual int getRegTypeForDataType(const Type* type) const = 0;
-  virtual int getRegTypeForLR(const LiveRange *LR) const = 0;
-  virtual int getRegType(int unifiedRegNum) const = 0;
-  
-  // The following methods are used to get the frame/stack pointers
-  // 
-  virtual unsigned getFramePointer() const = 0;
-  virtual unsigned getStackPointer() const = 0;
-
-  // This method gives the the number of bytes of stack spaceallocated 
-  // to a register when it is spilled to the stack.
-  //
-  virtual int getSpilledRegSize(int RegType) const = 0;
-};
-
-} // End llvm namespace
-
-#endif