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

src/IceAssemblerARM32.h

 //===- subzero/src/IceAssemblerARM32.h - Assembler for ARM32 ----*- C++ -*-===//
 //
 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Modified by the Subzero authors.
 //
 //===----------------------------------------------------------------------===//
 //
@@ skipping 68 matching lines @@
     DRegListSize2 = 10, // 0b1010
     DRegListSIze3 = 6,  // 0b0110
     DRegListSize4 = 2   // 0b0010
   };
 
   class TargetInfo {
     TargetInfo(const TargetInfo &) = delete;
     TargetInfo &operator=(const TargetInfo &) = delete;
 
   public:
-    TargetInfo(bool HasFramePointer, SizeT FrameOrStackReg)
+    TargetInfo(bool HasFramePointer, RegNumT FrameOrStackReg)
         : HasFramePointer(HasFramePointer), FrameOrStackReg(FrameOrStackReg) {}
     explicit TargetInfo(const TargetLowering *Target)
         : HasFramePointer(Target->hasFramePointer()),
           FrameOrStackReg(Target->getFrameOrStackReg()) {}
     const bool HasFramePointer;
-    const SizeT FrameOrStackReg;
+    const RegNumT FrameOrStackReg;
   };
 
   explicit AssemblerARM32(bool use_far_branches = false)
       : Assembler(Asm_ARM32) {
     // TODO(kschimpf): Add mode if needed when branches are handled.
     (void)use_far_branches;
   }
   ~AssemblerARM32() override {
     if (BuildDefs::asserts()) {
       for (const Label *Label : CfgNodeLabels) {
@@ skipping 599 matching lines @@
 
   void emitVFPsss(CondARM32::Cond Cond, IValueT Opcode, const Operand *OpSd,
                   const Operand *OpSn, const Operand *OpSm,
                   const char *InstName);
 };
 
 } // end of namespace ARM32
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEASSEMBLERARM32_H