CodeGen: Use Register in TargetLowering

llvm/include/llvm/CodeGen/TargetLowering.h

@@ -1665,18 +1665,16 @@ public:
 
   /// If a physical register, this returns the register that receives the
   /// exception address on entry to an EH pad.
-  virtual unsigned
+  virtual Register
   getExceptionPointerRegister(const Constant *PersonalityFn) const {
-    // 0 is guaranteed to be the NoRegister value on all targets
-    return 0;
+    return Register();
   }
 
   /// If a physical register, this returns the register that receives the
   /// exception typeid on entry to a landing pad.
-  virtual unsigned
+  virtual Register
   getExceptionSelectorRegister(const Constant *PersonalityFn) const {
-    // 0 is guaranteed to be the NoRegister value on all targets
-    return 0;
+    return Register();
   }
 
   virtual bool needsFixedCatchObjects() const {
@@ -2068,7 +2066,7 @@ protected:
 
   /// If set to a physical register, this specifies the register that
   /// llvm.savestack/llvm.restorestack should save and restore.
-  void setStackPointerRegisterToSaveRestore(unsigned R) {
+  void setStackPointerRegisterToSaveRestore(Register R) {
     StackPointerRegisterToSaveRestore = R;
   }
 
@@ -2849,7 +2847,7 @@ private:
 
   /// If set to a physical register, this specifies the register that
   /// llvm.savestack/llvm.restorestack should save and restore.
-  unsigned StackPointerRegisterToSaveRestore;
+  Register StackPointerRegisterToSaveRestore;
 
   /// This indicates the default register class to use for each ValueType the
   /// target supports natively.
@@ -3902,7 +3900,7 @@ public:
   /// Should SelectionDAG lower an atomic load of the given kind as a normal
   /// LoadSDNode (as opposed to an AtomicSDNode)?  NOTE: The intention is to
   /// eventually migrate all targets to the using LoadSDNodes, but porting is
-  /// being done target at a time.  
+  /// being done target at a time.
   virtual bool lowerAtomicLoadAsLoadSDNode(const LoadInst &LI) const {
     assert(LI.isAtomic() && "violated precondition");
     return false;

llvm/lib/Target/AArch64/AArch64ISelLowering.h

@@ -542,7 +542,7 @@ public:
 
   /// If a physical register, this returns the register that receives the
   /// exception address on entry to an EH pad.
-  unsigned
+  Register
   getExceptionPointerRegister(const Constant *PersonalityFn) const override {
     // FIXME: This is a guess. Has this been defined yet?
     return AArch64::X0;
@@ -550,7 +550,7 @@ public:
 
   /// If a physical register, this returns the register that receives the
   /// exception typeid on entry to a landing pad.
-  unsigned
+  Register
   getExceptionSelectorRegister(const Constant *PersonalityFn) const override {
     // FIXME: This is a guess. Has this been defined yet?
     return AArch64::X1;

llvm/lib/Target/ARM/ARMISelLowering.cpp

@@ -18134,18 +18134,18 @@ bool ARMTargetLowering::functionArgumentNeedsConsecutiveRegisters(
   return IsHA || IsIntArray;
 }
 
-unsigned ARMTargetLowering::getExceptionPointerRegister(
+Register ARMTargetLowering::getExceptionPointerRegister(
     const Constant *PersonalityFn) const {
   // Platforms which do not use SjLj EH may return values in these registers
   // via the personality function.
-  return Subtarget->useSjLjEH() ? ARM::NoRegister : ARM::R0;
+  return Subtarget->useSjLjEH() ? Register() : ARM::R0;
 }
 
-unsigned ARMTargetLowering::getExceptionSelectorRegister(
+Register ARMTargetLowering::getExceptionSelectorRegister(
     const Constant *PersonalityFn) const {
   // Platforms which do not use SjLj EH may return values in these registers
   // via the personality function.
-  return Subtarget->useSjLjEH() ? ARM::NoRegister : ARM::R1;
+  return Subtarget->useSjLjEH() ? Register() : ARM::R1;
 }
 
 void ARMTargetLowering::initializeSplitCSR(MachineBasicBlock *Entry) const {

llvm/lib/Target/ARM/ARMISelLowering.h

@@ -563,12 +563,12 @@ class VectorType;
 
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
-    unsigned
+    Register
     getExceptionPointerRegister(const Constant *PersonalityFn) const override;
 
     /// If a physical register, this returns the register that receives the
     /// exception typeid on entry to a landing pad.
-    unsigned
+    Register
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override;
 
     Instruction *makeDMB(IRBuilder<> &Builder, ARM_MB::MemBOpt Domain) const;

llvm/lib/Target/Hexagon/HexagonISelLowering.h

@@ -235,14 +235,14 @@ namespace HexagonISD {
 
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
-    unsigned
+    Register
     getExceptionPointerRegister(const Constant *PersonalityFn) const override {
       return Hexagon::R0;
     }
 
     /// If a physical register, this returns the register that receives the
     /// exception typeid on entry to a landing pad.
-    unsigned
+    Register
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override {
       return Hexagon::R1;
     }

llvm/lib/Target/Mips/MipsISelLowering.h

@@ -353,14 +353,14 @@ class TargetRegisterClass;
 
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
-    unsigned
+    Register
     getExceptionPointerRegister(const Constant *PersonalityFn) const override {
       return ABI.IsN64() ? Mips::A0_64 : Mips::A0;
     }
 
     /// If a physical register, this returns the register that receives the
     /// exception typeid on entry to a landing pad.
-    unsigned
+    Register
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override {
       return ABI.IsN64() ? Mips::A1_64 : Mips::A1;
     }

llvm/lib/Target/PowerPC/PPCISelLowering.cpp

@@ -15565,12 +15565,12 @@ PPCTargetLowering::getScratchRegisters(CallingConv::ID) const {
   return ScratchRegs;
 }
 
-unsigned PPCTargetLowering::getExceptionPointerRegister(
+Register PPCTargetLowering::getExceptionPointerRegister(
     const Constant *PersonalityFn) const {
   return Subtarget.isPPC64() ? PPC::X3 : PPC::R3;
 }
 
-unsigned PPCTargetLowering::getExceptionSelectorRegister(
+Register PPCTargetLowering::getExceptionSelectorRegister(
     const Constant *PersonalityFn) const {
   return Subtarget.isPPC64() ? PPC::X4 : PPC::R4;
 }

llvm/lib/Target/PowerPC/PPCISelLowering.h

@@ -877,7 +877,7 @@ namespace llvm {
       if (VT != MVT::f32 && VT != MVT::f64)
         return false;
 
-      return true; 
+      return true;
     }
 
     // Returns true if the address of the global is stored in TOC entry.
@@ -945,12 +945,12 @@ namespace llvm {
 
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
-    unsigned
+    Register
     getExceptionPointerRegister(const Constant *PersonalityFn) const override;
 
     /// If a physical register, this returns the register that receives the
     /// exception typeid on entry to a landing pad.
-    unsigned
+    Register
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override;
 
     /// Override to support customized stack guard loading.

llvm/lib/Target/RISCV/RISCVISelLowering.cpp

@@ -2915,12 +2915,12 @@ Value *RISCVTargetLowering::emitMaskedAtomicCmpXchgIntrinsic(
   return Result;
 }
 
-unsigned RISCVTargetLowering::getExceptionPointerRegister(
+Register RISCVTargetLowering::getExceptionPointerRegister(
     const Constant *PersonalityFn) const {
   return RISCV::X10;
 }
 
-unsigned RISCVTargetLowering::getExceptionSelectorRegister(
+Register RISCVTargetLowering::getExceptionSelectorRegister(
     const Constant *PersonalityFn) const {
   return RISCV::X11;
 }

llvm/lib/Target/RISCV/RISCVISelLowering.h

@@ -143,12 +143,12 @@ public:
 
   /// If a physical register, this returns the register that receives the
   /// exception address on entry to an EH pad.
-  unsigned
+  Register
   getExceptionPointerRegister(const Constant *PersonalityFn) const override;
 
   /// If a physical register, this returns the register that receives the
   /// exception typeid on entry to a landing pad.
-  unsigned
+  Register
   getExceptionSelectorRegister(const Constant *PersonalityFn) const override;
 
   bool shouldExtendTypeInLibCall(EVT Type) const override;

llvm/lib/Target/Sparc/SparcISelLowering.h

@@ -103,14 +103,14 @@ namespace llvm {
 
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
-    unsigned
+    Register
     getExceptionPointerRegister(const Constant *PersonalityFn) const override {
       return SP::I0;
     }
 
     /// If a physical register, this returns the register that receives the
     /// exception typeid on entry to a landing pad.
-    unsigned
+    Register
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override {
       return SP::I1;
     }

llvm/lib/Target/SystemZ/SystemZISelLowering.h

@@ -486,14 +486,14 @@ public:
 
   /// If a physical register, this returns the register that receives the
   /// exception address on entry to an EH pad.
-  unsigned
+  Register
   getExceptionPointerRegister(const Constant *PersonalityFn) const override {
     return SystemZ::R6D;
   }
 
   /// If a physical register, this returns the register that receives the
   /// exception typeid on entry to a landing pad.
-  unsigned
+  Register
   getExceptionSelectorRegister(const Constant *PersonalityFn) const override {
     return SystemZ::R7D;
   }

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -25589,7 +25589,7 @@ SDValue X86TargetLowering::LowerFRAME_TO_ARGS_OFFSET(SDValue Op,
   return DAG.getIntPtrConstant(2 * RegInfo->getSlotSize(), SDLoc(Op));
 }
 
-unsigned X86TargetLowering::getExceptionPointerRegister(
+Register X86TargetLowering::getExceptionPointerRegister(
     const Constant *PersonalityFn) const {
   if (classifyEHPersonality(PersonalityFn) == EHPersonality::CoreCLR)
     return Subtarget.isTarget64BitLP64() ? X86::RDX : X86::EDX;
@@ -25597,7 +25597,7 @@ unsigned X86TargetLowering::getExceptionPointerRegister(
   return Subtarget.isTarget64BitLP64() ? X86::RAX : X86::EAX;
 }
 
-unsigned X86TargetLowering::getExceptionSelectorRegister(
+Register X86TargetLowering::getExceptionSelectorRegister(
     const Constant *PersonalityFn) const {
   // Funclet personalities don't use selectors (the runtime does the selection).
   assert(!isFuncletEHPersonality(classifyEHPersonality(PersonalityFn)));
@@ -25621,7 +25621,7 @@ SDValue X86TargetLowering::LowerEH_RETURN(SDValue Op, SelectionDAG &DAG) const {
           (FrameReg == X86::EBP && PtrVT == MVT::i32)) &&
          "Invalid Frame Register!");
   SDValue Frame = DAG.getCopyFromReg(DAG.getEntryNode(), dl, FrameReg, PtrVT);
-  unsigned StoreAddrReg = (PtrVT == MVT::i64) ? X86::RCX : X86::ECX;
+  Register StoreAddrReg = (PtrVT == MVT::i64) ? X86::RCX : X86::ECX;
 
   SDValue StoreAddr = DAG.getNode(ISD::ADD, dl, PtrVT, Frame,
                                  DAG.getIntPtrConstant(RegInfo->getSlotSize(),

llvm/lib/Target/X86/X86ISelLowering.h

@@ -1179,12 +1179,12 @@ namespace llvm {
 
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
-    unsigned
+    Register
     getExceptionPointerRegister(const Constant *PersonalityFn) const override;
 
     /// If a physical register, this returns the register that receives the
     /// exception typeid on entry to a landing pad.
-    unsigned
+    Register
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override;
 
     virtual bool needsFixedCatchObjects() const override;

llvm/lib/Target/XCore/XCoreISelLowering.h

@@ -127,14 +127,14 @@ namespace llvm {
 
     /// If a physical register, this returns the register that receives the
     /// exception address on entry to an EH pad.
-    unsigned
+    Register
     getExceptionPointerRegister(const Constant *PersonalityFn) const override {
       return XCore::R0;
     }
 
     /// If a physical register, this returns the register that receives the
     /// exception typeid on entry to a landing pad.
-    unsigned
+    Register
     getExceptionSelectorRegister(const Constant *PersonalityFn) const override {
       return XCore::R1;
     }