Author: [email protected]
Date: Wed Feb 25 06:54:25 2009
New Revision: 1362
Added:
branches/experimental/toiger/test/mjsunit/short-circuit-boolean.js
Log:
Experimental: add a simple test for constant folding of conditions in
short-circuited boolean operators.
Review URL: http://codereview.chromium.org/27131
Added: branches/experimental/toiger/test/mjsunit/short-circuit-boolean.js
==============================================================================
--- (empty file)
+++ branches/experimental/toiger/test/mjsunit/short-circuit-boolean.js Wed
Feb 25 06:54:25 2009
@@ -0,0 +1,46 @@
+// Copyright 2009 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.
+
+// Test some code paths through the compiler for short-circuited
+// boolean expressions.
+
+function andTest0() {
+ var a = 0;
+ // Left subexpression is known false at compile time.
+ return a != 0 && "failure";
+}
+
+assertTrue(andTest0());
+
+
+function orTest0() {
+ var a = 0;
+ // Left subexpression is known true at compile time.
+ return a == 0 || "failure";
+}
+
+assertTrue(orTest0());
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