Give getPointerRegClass() a "kind" value so that targets can

support multiple different pointer register classes.

llvm-svn: 77501

llvm/include/llvm/Target/TargetRegisterInfo.h

@@ -514,8 +514,9 @@ public:
   }
 
   /// getPointerRegClass - Returns a TargetRegisterClass used for pointer
-  /// values.
-  virtual const TargetRegisterClass *getPointerRegClass() const {
+  /// values.  If a target supports multiple different pointer register classes,
+  /// kind specifies which one is indicated.
+  virtual const TargetRegisterClass *getPointerRegClass(unsigned Kind=0) const {
     assert(0 && "Target didn't implement getPointerRegClass!");
     return 0; // Must return a value in order to compile with VS 2005
   }

llvm/lib/Target/ARM/ARMBaseRegisterInfo.cpp

@@ -1,4 +1,4 @@
-//===- ARMBaseRegisterInfo.cpp - ARM Register Information -----------*- C++ -*-===//
+//===- ARMBaseRegisterInfo.cpp - ARM Register Information -------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -224,8 +224,8 @@ BitVector ARMBaseRegisterInfo::getReservedRegs(const MachineFunction &MF) const
   return Reserved;
 }
 
-bool
-ARMBaseRegisterInfo::isReservedReg(const MachineFunction &MF, unsigned Reg) const {
+bool ARMBaseRegisterInfo::isReservedReg(const MachineFunction &MF,
+                                        unsigned Reg) const {
   switch (Reg) {
   default: break;
   case ARM::SP:
@@ -243,7 +243,8 @@ ARMBaseRegisterInfo::isReservedReg(const MachineFunction &MF, unsigned Reg) cons
   return false;
 }
 
-const TargetRegisterClass *ARMBaseRegisterInfo::getPointerRegClass() const {
+const TargetRegisterClass *
+ARMBaseRegisterInfo::getPointerRegClass(unsigned Kind) const {
   return &ARM::GPRRegClass;
 }
 

llvm/lib/Target/ARM/ARMBaseRegisterInfo.h

@@ -1,4 +1,4 @@
-//===- ARMBaseRegisterInfo.h - ARM Register Information Impl --------*- C++ -*-===//
+//===- ARMBaseRegisterInfo.h - ARM Register Information Impl ----*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
@@ -74,7 +74,7 @@ public:
 
   BitVector getReservedRegs(const MachineFunction &MF) const;
 
-  const TargetRegisterClass *getPointerRegClass() const;
+  const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const;
 
   std::pair<TargetRegisterClass::iterator,TargetRegisterClass::iterator>
   getAllocationOrder(const TargetRegisterClass *RC,

llvm/lib/Target/CellSPU/SPURegisterInfo.cpp

@@ -219,8 +219,8 @@ SPURegisterInfo::getNumArgRegs()
 
 /// getPointerRegClass - Return the register class to use to hold pointers.
 /// This is used for addressing modes.
-const TargetRegisterClass * SPURegisterInfo::getPointerRegClass() const
-{
+const TargetRegisterClass *
+SPURegisterInfo::getPointerRegClass(unsigned Kind) const {
   return &SPU::R32CRegClass;
 }
 

llvm/lib/Target/CellSPU/SPURegisterInfo.h

@@ -43,7 +43,8 @@ namespace llvm {
 
     /// getPointerRegClass - Return the register class to use to hold pointers.
     /// This is used for addressing modes.
-    virtual const TargetRegisterClass *getPointerRegClass() const;
+    virtual const TargetRegisterClass *
+    getPointerRegClass(unsigned Kind = 0) const;
 
     //! Return the array of callee-saved registers
     virtual const unsigned* getCalleeSavedRegs(const MachineFunction *MF) const;

llvm/lib/Target/MSP430/MSP430RegisterInfo.cpp

@@ -59,8 +59,7 @@ MSP430RegisterInfo::getCalleeSavedRegClasses(const MachineFunction *MF) const {
   return CalleeSavedRegClasses;
 }
 
-BitVector
-MSP430RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
+BitVector MSP430RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
   BitVector Reserved(getNumRegs());
 
   // Mark 4 special registers as reserved.
@@ -76,7 +75,8 @@ MSP430RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
   return Reserved;
 }
 
-const TargetRegisterClass* MSP430RegisterInfo::getPointerRegClass() const {
+const TargetRegisterClass *
+MSP430RegisterInfo::getPointerRegClass(unsigned Kind) const {
   return &MSP430::GR16RegClass;
 }
 

llvm/lib/Target/MSP430/MSP430RegisterInfo.h

@@ -40,7 +40,7 @@ public:
     getCalleeSavedRegClasses(const MachineFunction *MF = 0) const;
 
   BitVector getReservedRegs(const MachineFunction &MF) const;
-  const TargetRegisterClass* getPointerRegClass() const;
+  const TargetRegisterClass* getPointerRegClass(unsigned Kind = 0) const;
 
   bool hasFP(const MachineFunction &MF) const;
   bool hasReservedCallFrame(MachineFunction &MF) const;

llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp

@@ -140,10 +140,10 @@ PPCRegisterInfo::PPCRegisterInfo(const PPCSubtarget &ST,
 
 /// getPointerRegClass - Return the register class to use to hold pointers.
 /// This is used for addressing modes.
-const TargetRegisterClass *PPCRegisterInfo::getPointerRegClass() const {
+const TargetRegisterClass *
+PPCRegisterInfo::getPointerRegClass(unsigned Kind) const {
   if (Subtarget.isPPC64())
     return &PPC::G8RCRegClass;
-  else
   return &PPC::GPRCRegClass;
 }
 

llvm/lib/Target/PowerPC/PPCRegisterInfo.h

@@ -37,7 +37,7 @@ public:
 
   /// getPointerRegClass - Return the register class to use to hold pointers.
   /// This is used for addressing modes.
-  virtual const TargetRegisterClass *getPointerRegClass() const;  
+  virtual const TargetRegisterClass *getPointerRegClass(unsigned Kind=0) const;  
 
   /// Code Generation virtual methods...
   const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;

llvm/lib/Target/X86/X86RegisterInfo.cpp

@@ -245,11 +245,10 @@ X86RegisterInfo::getMatchingSuperRegClass(const TargetRegisterClass *A,
   return 0;
 }
 
-const TargetRegisterClass *X86RegisterInfo::getPointerRegClass() const {
-  const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
-  if (Subtarget->is64Bit())
+const TargetRegisterClass *X86RegisterInfo::
+getPointerRegClass(unsigned Kind) const {
+  if (TM.getSubtarget<X86Subtarget>().is64Bit())
     return &X86::GR64RegClass;
-  else
   return &X86::GR32RegClass;
 }
 

llvm/lib/Target/X86/X86RegisterInfo.h

@@ -102,7 +102,7 @@ public:
 
   /// getPointerRegClass - Returns a TargetRegisterClass used for pointer
   /// values.
-  const TargetRegisterClass *getPointerRegClass() const;
+  const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const;
 
   /// 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