Migrated several tests from blink to V8 repository.

test/webkit/codegen-peephole-locals.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."
+"Tests whether peephole optimizations on bytecode properly deal with local registers."
 );
 
-Object.defineProperty(Array.prototype, 0, { writable: false });
-shouldBe("[42].concat()", "[42]");
+function if_less_test()
+{
+    var a = 0;
+    var b = 2;
+    if (a = 1 < 2)
+        return a == 1;
+}
 
+shouldBeTrue("if_less_test()");
 
+function if_else_less_test()
+{
+    var a = 0;
+    var b = 2;
+    if (a = 1 < 2)
+        return a == 1;
+    else
+        return false;
+}
+
+shouldBeTrue("if_else_less_test()");
+
+function conditional_less_test()
+{
+    var a = 0;
+    var b = 2;
+    return (a = 1 < 2) ? a == 1 : false;
+}
+
+shouldBeTrue("conditional_less_test()");
+
+function logical_and_less_test()
+{
+    var a = 0;
+    var b = 2;
+    return (a = 1 < 2) && a == 1;
+}
+
+shouldBeTrue("logical_and_less_test()");
+
+function logical_or_less_test()
+{
+    var a = 0;
+    var b = 2;
+    var result = (a = 1 < 2) || a == 1;
+    return a == 1;
+}
+
+shouldBeTrue("logical_or_less_test()");
+
+function do_while_less_test()
+{
+    var a = 0;
+    var count = 0;
+    do {
+        if (count == 1)
+            return a == 1;
+        count++;
+    } while (a = 1 < 2)
+}
+
+shouldBeTrue("do_while_less_test()");
+
+function while_less_test()
+{
+    var a = 0;
+    while (a = 1 < 2)
+        return a == 1;
+}
+
+shouldBeTrue("while_less_test()");
+
+function for_less_test()
+{
+    for (var a = 0; a = 1 < 2; )
+        return a == 1;
+}
+
+shouldBeTrue("for_less_test()");