Fix GCC 4.7 warnings:

src/ia32/disasm-ia32.cc

 // Copyright 2011 the V8 project authors. 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.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 444 matching lines @@
       }
       break;
     case 3:
       AppendToBuffer("%s", (this->*register_name)(rm));
       return 1;
     default:
       UnimplementedInstruction();
       return 1;
   }
   UNREACHABLE();
+  return 1;

[Vyacheslav Egorov (Chromium), 2011/12/20 15:45:14]

what kind of warning do you get here? this return can never be reached (cases
end with return, and default captures everything else). seems like a bug in the
compiler.

 }
 
 
 int DisassemblerIA32::PrintRightOperand(byte* modrmp) {
   return PrintRightOperandHelper(modrmp, &DisassemblerIA32::NameOfCPURegister);
 }
 
 
 int DisassemblerIA32::PrintRightByteOperand(byte* modrmp) {
   return PrintRightOperandHelper(modrmp,
@@ skipping 1215 matching lines @@
       fprintf(f, "  ");
     }
     fprintf(f, "  %s\n", buffer.start());
   }
 }
 
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_IA32