v8/test/mjsunit/regress/regress-1167.js
2011-04-11 13:24:50 +00:00

77 lines
2.8 KiB
JavaScript

// Copyright 2011 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
// Deoptimization after a logical not in an effect context should not see a
// value for the logical not expression.
function test0(n) {
var a = new Array(n);
for (var i = 0; i < n; ++i) {
// ~ of a non-numeric value is used to trigger deoptimization.
a[i] = void(!(delete 'object')) % ~(delete 4);
}
}
// OSR (after deoptimization) is used to observe the stack height mismatch.
for (var i = 0; i < 5; ++i) {
for (var j = 1; j < 12; ++j) {
test0(j * 1000);
}
}
// Similar test with a different subexpression of unary !.
function test1(n) {
var a = new Array(n);
for (var i = 0; i < n; ++i) {
a[i] = void(!(- 'object')) % ~(delete 4);
}
}
for (i = 0; i < 5; ++i) {
for (j = 1; j < 12; ++j) {
test1(j * 1000);
}
}
// A similar issue, different subexpression of unary ! (e0 !== e1 is
// translated into !(e0 == e1)) and different effect context.
function side_effect() { }
function observe(x, y) { return x; }
function test2(x) {
return observe(this,
(((side_effect.observe <= side_effect.side_effect) !== false),
x + 1));
}
for (var i = 0; i < 5; ++i) test2(0);
%OptimizeFunctionOnNextCall(test2);
test2(0);
test2(test2);