Cleanup of class id loading sequences.

runtime/vm/assembler_ia32.h

 // 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.
 
 #ifndef VM_ASSEMBLER_IA32_H_
 #define VM_ASSEMBLER_IA32_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_ia32.h directly; use assembler.h instead.
 #endif
@@ skipping 502 matching lines @@
   void fptan();
 
   void xchgl(Register dst, Register src);
 
   void cmpl(Register reg, const Immediate& imm);
   void cmpl(Register reg0, Register reg1);
   void cmpl(Register reg, const Address& address);
 
   void cmpl(const Address& address, Register reg);
   void cmpl(const Address& address, const Immediate& imm);
+  void cmpb(const Address& address, const Immediate& imm);
 
   void testl(Register reg1, Register reg2);
   void testl(Register reg, const Immediate& imm);
 
   void andl(Register dst, const Immediate& imm);
   void andl(Register dst, Register src);
   void andl(Register dst, const Address& address);
 
   void orl(Register dst, const Immediate& imm);
   void orl(Register dst, Register src);
@@ skipping 154 matching lines @@
    */
   void LoadClassId(Register result, Register object);
 
   void LoadClassById(Register result, Register class_id);
 
   void LoadClass(Register result, Register object, Register scratch);
 
   void CompareClassId(Register object, intptr_t class_id, Register scratch);
 
   void LoadTaggedClassIdMayBeSmi(Register result,
-                                 Register object,
-                                 Register tmp);
+                                 Register object);
 
   /*
    * Misc. functionality
    */
   void SmiTag(Register reg) {
     addl(reg, reg);
   }
 
   void SmiUntag(Register reg) {
     sarl(reg, Immediate(kSmiTagSize));
@@ skipping 195 matching lines @@
 }
 
 
 inline void Assembler::EmitOperandSizeOverride() {
   EmitUint8(0x66);
 }
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_IA32_H_