Added pre- and postfix count operations to top-level compiler....

test/mjsunit/compiler/countoperation.js

+// 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 pre- and postfix count operations.
+
+// Test value context.
+var a = 42;
+var b = {x:42};
+var c = "x";
+assertEquals(43, ++a);
+assertEquals(43, a);
+assertEquals(43, a++);
+assertEquals(44, a);
+assertEquals(43, ++b.x);
+assertEquals(43, b.x);
+assertEquals(43, b.x++);
+assertEquals(44, b.x);
+assertEquals(45, ++b[c]);
+assertEquals(45, b[c]);
+assertEquals(45, b[c]++);
+assertEquals(46, b[c]);
+
+// Test effect context.
+a = 42;
+b = {x:42};
+c = "x";
+assertEquals(1, eval("++a; 1"));
+assertEquals(43, a);
+assertEquals(1, eval("a++; 1"));
+assertEquals(44, a);
+assertEquals(1, eval("++b.x; 1"));
+assertEquals(43, b.x);
+assertEquals(1, eval("b.x++; 1"));
+assertEquals(44, b.x);
+assertEquals(1, eval("++b[c]; 1"));
+assertEquals(45, b[c]);
+assertEquals(1, eval("b[c]++; 1"));
+assertEquals(46, b[c]);
+
+// Test test context.
+a = 42;
+b = {x:42};
+c = "x";
+assertEquals(1, (++a) ? 1 : 0);
+assertEquals(43, a);
+assertEquals(1, (a++) ? 1 : 0);
+assertEquals(44, a);
+assertEquals(1, (++b.x) ? 1 : 0);
+assertEquals(43, b.x);
+assertEquals(1, (b.x++) ? 1 : 0);
+assertEquals(44, b.x);
+assertEquals(1, (++b[c]) ? 1 : 0);
+assertEquals(45, b[c]);
+assertEquals(1, (b[c]++) ? 1 : 0);
+assertEquals(46, b[c]);
+
+// Test value/test and test/value contexts.
+a = 42;
+b = {x:42};
+c = "x";
+assertEquals(43, ++a || 1);
+assertEquals(43, a);
+assertEquals(43, a++ || 1);
+assertEquals(44, a);
+assertEquals(43, ++b.x || 1);
+assertEquals(43, b.x);
+assertEquals(43, (b.x++) || 1);
+assertEquals(44, b.x);
+assertEquals(45, ++b[c] || 1);
+assertEquals(45, b[c]);
+assertEquals(45, b[c]++ || 1);
+assertEquals(46, b[c]);
+a = 42;
+b = {x:42};
+c = "x";
+assertEquals(1, ++a && 1);
+assertEquals(43, a);
+assertEquals(1, a++ && 1);
+assertEquals(44, a);
+assertEquals(1, ++b.x && 1);
+assertEquals(43, b.x);
+assertEquals(1, (b.x++) && 1);
+assertEquals(44, b.x);
+assertEquals(1, ++b[c] && 1);
+assertEquals(45, b[c]);
+assertEquals(1, b[c]++ && 1);
+assertEquals(46, b[c]);