Fix ARM emit() methods to count instructions generated.

src/IceInstARM32.h

 //===- subzero/src/IceInstARM32.h - ARM32 machine instructions --*- C++ -*-===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 316 matching lines @@
     Vadd,
     Vcmp,
     Vcvt,
     Vdiv,
     Vmrs,
     Vmul,
     Vsqrt,
     Vsub
   };
 
+  static constexpr size_t InstSize = sizeof(uint32_t);
+
   static const char *getWidthString(Type Ty);
   static const char *getVecWidthString(Type Ty);
   static CondARM32::Cond getOppositeCondition(CondARM32::Cond Cond);
 
+  /// Called inside derived methods emit() to communicate that multiple
+  /// instructions are being generated. Used by emitIAS() methods to
+  /// generate textual fixups for instructions that are not yet
+  /// implemented.
+  void startNextInst(const Cfg *Func) const;
+
   /// Shared emit routines for common forms of instructions.
   static void emitThreeAddrFP(const char *Opcode, const InstARM32 *Inst,
                               const Cfg *Func);
 
   void dump(const Cfg *Func) const override;
 
   void emitIAS(const Cfg *Func) const override;
 
 protected:
   InstARM32(Cfg *Func, InstKindARM32 Kind, SizeT Maxsrcs, Variable *Dest)
@@ skipping 882 matching lines @@
 // default implementations. Without this, there is the possibility of ODR
 // violations and link errors.
 
 template <> void InstARM32Ldr::emit(const Cfg *Func) const;
 template <> void InstARM32Movw::emit(const Cfg *Func) const;
 template <> void InstARM32Movt::emit(const Cfg *Func) const;
 
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEINSTARM32_H