Better handling of allocation alignment in generated code...

src/ia32/codegen-ia32.cc

 // Copyright 2006-2009 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 7023 matching lines @@
       __ push(edx);
     } else {
       __ push(edx);
       __ push(eax);
     }
     __ push(ecx);
   }
   switch (op_) {
     case Token::ADD: {
       // Test for string arguments before calling runtime.
-      Label not_strings, both_strings, not_string1, string1;
+      Label not_strings, not_string1, string1;
       Result answer;
       __ mov(eax, Operand(esp, 2 * kPointerSize));  // First argument.
       __ mov(edx, Operand(esp, 1 * kPointerSize));  // Second argument.
       __ test(eax, Immediate(kSmiTagMask));
       __ j(zero, &not_string1);
       __ CmpObjectType(eax, FIRST_NONSTRING_TYPE, eax);
       __ j(above_equal, &not_string1);
 
       // First argument is a a string, test second.
       __ test(edx, Immediate(kSmiTagMask));
@@ skipping 1344 matching lines @@
     __ add(Operand(dest), Immediate(2));
   }
   __ sub(Operand(count), Immediate(1));
   __ j(not_zero, &loop);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal