Implement target cache for constructor calls.

src/ia32/assembler-ia32.h

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 603 matching lines @@
   // Distance between start of patched debug break slot and the emitted address
   // to jump to.
   static const int kPatchDebugBreakSlotAddressOffset = 1;  // JMP imm32.
 
   static const int kCallInstructionLength = 5;
   static const int kJSReturnSequenceLength = 6;
 
   // The debug break slot must be able to contain a call instruction.
   static const int kDebugBreakSlotLength = kCallInstructionLength;
 
-  // One byte opcode for test eax,0xXXXXXXXX.
-  static const byte kTestEaxByte = 0xA9;
   // One byte opcode for test al, 0xXX.
   static const byte kTestAlByte = 0xA8;
   // One byte opcode for nop.
   static const byte kNopByte = 0x90;
 
   // One byte opcode for a short unconditional jump.
   static const byte kJmpShortOpcode = 0xEB;
   // One byte prefix for a short conditional jump.
   static const byte kJccShortPrefix = 0x70;
   static const byte kJncShortOpcode = kJccShortPrefix | not_carry;
@@ skipping 569 matching lines @@
  private:
   Assembler* assembler_;
 #ifdef DEBUG
   int space_before_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_ASSEMBLER_IA32_H_