Subzero: Use a proper RegNumT type instead of int32_t/SizeT.

src/IceTargetLowering.h

 //===- subzero/src/IceTargetLowering.h - Lowering interface -----*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 215 matching lines @@
   /// some optimization was done.
   virtual bool doBranchOpt(Inst * /*I*/, const CfgNode * /*NextNode*/) {
     return false;
   }
 
   virtual SizeT getNumRegisters() const = 0;
   /// Returns a variable pre-colored to the specified physical register. This is
   /// generally used to get very direct access to the register such as in the
   /// prolog or epilog or for marking scratch registers as killed by a call. If
   /// a Type is not provided, a target-specific default type is used.
-  virtual Variable *getPhysicalRegister(SizeT RegNum,
+  virtual Variable *getPhysicalRegister(RegNumT RegNum,
                                         Type Ty = IceType_void) = 0;
   /// Returns a printable name for the register.
-  virtual IceString getRegName(SizeT RegNum, Type Ty) const = 0;
+  virtual IceString getRegName(RegNumT RegNum, Type Ty) const = 0;
 
   virtual bool hasFramePointer() const { return false; }
   virtual void setHasFramePointer() = 0;
-  virtual SizeT getStackReg() const = 0;
-  virtual SizeT getFrameReg() const = 0;
-  virtual SizeT getFrameOrStackReg() const = 0;
+  virtual RegNumT getStackReg() const = 0;
+  virtual RegNumT getFrameReg() const = 0;
+  virtual RegNumT getFrameOrStackReg() const = 0;
   virtual size_t typeWidthInBytesOnStack(Type Ty) const = 0;
   virtual uint32_t getStackAlignment() const = 0;
   virtual void reserveFixedAllocaArea(size_t Size, size_t Align) = 0;
   virtual int32_t getFrameFixedAllocaOffset() const = 0;
   virtual uint32_t maxOutArgsSizeBytes() const { return 0; }
 
   /// Return whether a 64-bit Variable should be split into a Variable64On32.
   virtual bool shouldSplitToVariable64On32(Type Ty) const = 0;
 
   bool hasComputedFrame() const { return HasComputedFrame; }
@@ skipping 21 matching lines @@
                                               RegSetMask Exclude) const = 0;
   /// Get the set of physical registers available for the specified Variable's
   /// register class, applying register restrictions from the command line.
   virtual const llvm::SmallBitVector &
   getRegistersForVariable(const Variable *Var) const = 0;
   /// Get the set of *all* physical registers available for the specified
   /// Variable's register class, *not* applying register restrictions from the
   /// command line.
   virtual const llvm::SmallBitVector &
   getAllRegistersForVariable(const Variable *Var) const = 0;
-  virtual const llvm::SmallBitVector &getAliasesForRegister(SizeT) const = 0;
+  virtual const llvm::SmallBitVector &getAliasesForRegister(RegNumT) const = 0;
 
   void regAlloc(RegAllocKind Kind);
 
   virtual void
-  makeRandomRegisterPermutation(llvm::SmallVectorImpl<int32_t> &Permutation,
+  makeRandomRegisterPermutation(llvm::SmallVectorImpl<RegNumT> &Permutation,
                                 const llvm::SmallBitVector &ExcludeRegisters,
                                 uint64_t Salt) const = 0;
 
   /// Get the minimum number of clusters required for a jump table to be
   /// considered.
   virtual SizeT getMinJumpTableSize() const = 0;
   virtual void emitJumpTable(const Cfg *Func,
                              const InstJumpTable *JumpTable) const = 0;
 
   virtual void emitVariable(const Variable *Var) const = 0;
@@ skipping 53 matching lines @@
     TargetLowering *const Target;
     const bool NeedSandboxing;
   };
 
   explicit TargetLowering(Cfg *Func);
   // Applies command line filters to TypeToRegisterSet array.
   static void
   filterTypeToRegisterSet(GlobalContext *Ctx, int32_t NumRegs,
                           llvm::SmallBitVector TypeToRegisterSet[],
                           size_t TypeToRegisterSetSize,
-                          std::function<IceString(int32_t)> getRegName,
+                          std::function<IceString(RegNumT)> getRegName,
                           std::function<IceString(RegClass)> getRegClassName);
   virtual void lowerAlloca(const InstAlloca *Instr) = 0;
   virtual void lowerArithmetic(const InstArithmetic *Instr) = 0;
   virtual void lowerAssign(const InstAssign *Instr) = 0;
   virtual void lowerBr(const InstBr *Instr) = 0;
   virtual void lowerCall(const InstCall *Instr) = 0;
   virtual void lowerCast(const InstCast *Instr) = 0;
   virtual void lowerFcmp(const InstFcmp *Instr) = 0;
   virtual void lowerExtractElement(const InstExtractElement *Instr) = 0;
   virtual void lowerIcmp(const InstIcmp *Instr) = 0;
@@ skipping 191 matching lines @@
   virtual void lower() {}
 
 protected:
   explicit TargetHeaderLowering(GlobalContext *Ctx) : Ctx(Ctx) {}
   GlobalContext *Ctx;
 };
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICETARGETLOWERING_H