Migrated several tests from blink to V8 repository.

test/webkit/dfg-patchable-get-by-id-after-watchpoint.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 // 1.  Redistributions of source code must retain the above copyright
 //     notice, this list of conditions and the following disclaimer.
 // 2.  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 with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 description(
-"Tests the behavior of Array.prototype.concat while the array is having a bad time due to one of the elements we are concatenating."
+"This tests that a patchable GetById right after a watchpoint has the appropriate nop padding."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function foo(o, p) {
+    var a = p.f;
+    var b = o.f; // Watchpoint.
+    var c = p.g; // Patchable GetById.
+    return b(a + c);
+}
 
+function O() {
+}
 
+O.prototype.f = function(x) { return x + 1; };
+
+var o = new O();
+
+function P1() {
+}
+
+P1.prototype.g = 42;
+
+function P2() {
+}
+
+P2.prototype.g = 24;
+
+var p1 = new P1();
+var p2 = new P2();
+
+p1.f = 1;
+p2.f = 2;
+
+for (var i = 0; i < 200; ++i) {
+    var p = (i % 2) ? p1 : p2;
+    var expected = (i % 2) ? 44 : 27;
+    if (i == 150) {
+        // Cause first the watchpoint on o.f to fire, and then the GetById
+        // to be reset.
+        O.prototype.g = 57; // Fire the watchpoint.
+        P1.prototype.h = 58; // Reset the GetById.
+        P2.prototype.h = 59; // Not necessary, but what the heck - this resets the GetById even more.
+    }
+    shouldBe("foo(o, p)", "" + expected);
+}
+