Extends testb and cmpb/cmpw instruction support in the ia32 assembler.

src/ia32/disasm-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <assert.h>
 #include <stdarg.h>
 #include <stdio.h>
 
 #if V8_TARGET_ARCH_IA32
 
@@ skipping 1603 matching lines @@
           AppendToBuffer("mov_w ");
           data += PrintRightOperand(data);
           AppendToBuffer(",%s", NameOfCPURegister(regop));
         } else if (*data == 0xC7) {
           data++;
           AppendToBuffer("%s ", "mov_w");
           data += PrintRightOperand(data);
           int imm = *reinterpret_cast<int16_t*>(data);
           AppendToBuffer(",0x%x", imm);
           data += 2;
+        } else if (*data == 0xF7) {
+          data++;
+          AppendToBuffer("%s ", "test_w");
+          data += PrintRightOperand(data);
+          int imm = *reinterpret_cast<int16_t*>(data);
+          AppendToBuffer(",0x%x", imm);
+          data += 2;
         } else if (*data == 0x0F) {
           data++;
           if (*data == 0x38) {
             data++;
             if (*data == 0x17) {
               data++;
               int mod, regop, rm;
               get_modrm(*data, &mod, &regop, &rm);
               AppendToBuffer("ptest %s,%s",
                              NameOfXMMRegister(regop),
@@ skipping 638 matching lines @@
       fprintf(f, "  ");
     }
     fprintf(f, "  %s\n", buffer.start());
   }
 }
 
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_IA32