mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.8 KiB
81 lines
2.8 KiB
// Copyright 2013 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: --allow-natives-syntax
|
|
|
|
var S1 = "string1";
|
|
var S2 = "@@string2";
|
|
|
|
function dead1(a, b) {
|
|
var x = %StringCharCodeAt(a, 4);
|
|
return a; // x is dead code
|
|
}
|
|
|
|
function dead2(a, b) {
|
|
var x = %StringCharCodeAt(a, 3);
|
|
var y = %StringCharCodeAt(b, 1);
|
|
return a; // x and y are both dead
|
|
}
|
|
|
|
function dead3(a, b) {
|
|
a = a ? "11" : "12";
|
|
b = b ? "13" : "14";
|
|
var x = %StringCharCodeAt(a, 2);
|
|
var y = %StringCharCodeAt(b, 0);
|
|
return a; // x and y are both dead
|
|
}
|
|
|
|
function test() {
|
|
var S3 = S1 + S2;
|
|
|
|
assertEquals(S1, dead1(S1, S2));
|
|
assertEquals(S1, dead2(S1, S2));
|
|
assertEquals("11", dead3(S1, S2));
|
|
|
|
assertEquals(S2, dead1(S2, 677));
|
|
assertEquals(S2, dead2(S2, S3));
|
|
assertEquals("11", dead3(S2, S3));
|
|
|
|
assertEquals(S3, dead1(S3, 399));
|
|
assertEquals(S3, dead2(S3, "false"));
|
|
assertEquals("12", dead3(0, 32));
|
|
|
|
assertEquals(S3, dead1(S3, 0));
|
|
assertEquals(S3, dead2(S3, S1));
|
|
assertEquals("11", dead3(S3, 0));
|
|
|
|
assertEquals("true", dead1("true", 0));
|
|
assertEquals("true", dead2("true", S3));
|
|
assertEquals("11", dead3("true", 0));
|
|
}
|
|
|
|
test();
|
|
test();
|
|
%OptimizeFunctionOnNextCall(dead1);
|
|
%OptimizeFunctionOnNextCall(dead2);
|
|
%OptimizeFunctionOnNextCall(dead3);
|
|
test();
|
|
|