Initial implementation of fast path operation for bitwise OR.

test/mjsunit/compiler/this-property-refs.js

Index: test/mjsunit/compiler/this-property-refs.js
diff --git a/test/mjsunit/compiler/this-property-refs.js b/test/mjsunit/compiler/this-property-refs.js
new file mode 100644
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+++ b/test/mjsunit/compiler/this-property-refs.js
@@ -0,0 +1,64 @@
+// Copyright 2010 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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
+// OWNER OR 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.
+
+// Flags: --fast-compiler
+
+// Test references to properties of this.
+function Test() {
+  this.a = 0;
+  this.b = 1;
+  this.c = 2;
+  this.d = 3;
+}
+
+Test.prototype.test0 = function () {
+  this.a = this.b;
+};
+
+Test.prototype.test1 = function() {
+  this.a = this.b = this.c;
+};
+
+Test.prototype.test2 = function() {
+  this.c = this.d;
+  this.b = this.c;
+  this.a = this.b;
+};
+
+var t = new Test();
+
+t.test0();
+assertEquals(1, t.a);
+
+t.test1();
+assertEquals(2, t.a);
+assertEquals(2, t.b);
+
+t.test2();
+assertEquals(3, t.a);
+assertEquals(3, t.b);
+assertEquals(3, t.c);