Merge bleeding_edge r17376:17693.

src/runtime.js

 // Copyright 2006-2008 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 343 matching lines @@
 }
 
 
 // ECMA-262, section 11.8.6, page 54. To make the implementation more
 // efficient, the return value should be zero if the 'this' is an
 // instance of F, and non-zero if not. This makes it possible to avoid
 // an expensive ToBoolean conversion in the generated code.
 function INSTANCE_OF(F) {
   var V = this;
   if (!IS_SPEC_FUNCTION(F)) {
-    throw %MakeTypeError('instanceof_function_expected', [V]);
+    throw %MakeTypeError('instanceof_function_expected', [F]);
   }
 
   // If V is not an object, return false.
   if (!IS_SPEC_OBJECT(V)) {
     return 1;
   }
 
   // Check if function is bound, if so, get [[BoundFunction]] from it
   // and use that instead of F.
   var bindings = %BoundFunctionGetBindings(F);
@@ skipping 224 matching lines @@
   return %NumberToJSInt32(ToNumber(x));
 }
 
 
 // ES5, section 9.12
 function SameValue(x, y) {
   if (typeof x != typeof y) return false;
   if (IS_NUMBER(x)) {
     if (NUMBER_IS_NAN(x) && NUMBER_IS_NAN(y)) return true;
     // x is +0 and y is -0 or vice versa.
-    if (x === 0 && y === 0 && (1 / x) != (1 / y)) return false;
+    if (x === 0 && y === 0 && %_IsMinusZero(x) != %_IsMinusZero(y)) {
+      return false;
+    }
   }
   return x === y;
 }
 
 
 /* ---------------------------------
    - - -   U t i l i t i e s   - - -
    ---------------------------------
 */
 
@@ skipping 47 matching lines @@
   return i;
 }
 
 
 // NOTE: Setting the prototype for Array must take place as early as
 // possible due to code generation for array literals.  When
 // generating code for a array literal a boilerplate array is created
 // that is cloned when running the code.  It is essential that the
 // boilerplate gets the right prototype.
 %FunctionSetPrototype($Array, new $Array(0));