Revert change 1509 that flush ICs when adding setters on an object or...

test/mjsunit/regress/regress-1344252.js

-// Copyright 2008 the V8 project authors. All rights reserved.
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-// modification, are permitted provided that the following conditions are
-// met:
-//
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-//       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
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-//       with the distribution.
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-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
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-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// Test that setter accessors added to the prototype chain are called
-// when setting properties.
-
-// Test that accessors added to the prototype chain are called
-// eventhough there are inline caches for setting the property
-
-function F() {
-  this.x = 42;
-  this.y = 87;
-}
-
-// Force the inline caches to monomorphic state.
-new F(); new F();
-
-// Add a setter for x to Object.prototype and make sure it gets
-// called.
-var result_x;
-Object.prototype.__defineSetter__('x', function(value) { result_x = value; });
-var f = new F();
-assertEquals(42, result_x);
-assertTrue(typeof f.x == 'undefined');
-
-// Add a setter for y by changing the prototype of f and make sure
-// that gets called too.
-var result_y;
-var proto = new Object();
-proto.__defineSetter__('y', function (value) { result_y = value; });
-var f = { };
-f.__proto__ = proto;
-F.call(f);
-assertEquals(87, result_y);
-assertTrue(typeof f.y == 'undefined');
-
-// Test the same issue in the runtime system.  Make sure that
-// accessors added to the prototype chain are called instead of
-// following map transitions.
-//
-// Create two objects.
-var result_z;
-var o1 = new Object();
-var o2 = new Object();
-// Add a z property to o1 to create a map transition.
-o1.z = 32;
-// Add a z accessor in the prototype chain for o1 and o2.
-Object.prototype.__defineSetter__('z', function(value) { result_z = value; });
-// The accessor should be called for o2.
-o2.z = 27;
-assertEquals(27, result_z);
-assertTrue(typeof o2.z == 'undefined');