ed968b1042
TEST=existing unit tests still pass Review URL: http://codereview.chromium.org/6821009 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7572 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
77 lines
2.8 KiB
JavaScript
77 lines
2.8 KiB
JavaScript
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --allow-natives-syntax
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// Deoptimization after a logical not in an effect context should not see a
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// value for the logical not expression.
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function test0(n) {
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var a = new Array(n);
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for (var i = 0; i < n; ++i) {
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// ~ of a non-numeric value is used to trigger deoptimization.
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a[i] = void(!(delete 'object')) % ~(delete 4);
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}
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}
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// OSR (after deoptimization) is used to observe the stack height mismatch.
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for (var i = 0; i < 5; ++i) {
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for (var j = 1; j < 12; ++j) {
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test0(j * 1000);
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}
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}
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// Similar test with a different subexpression of unary !.
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function test1(n) {
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var a = new Array(n);
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for (var i = 0; i < n; ++i) {
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a[i] = void(!(- 'object')) % ~(delete 4);
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}
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}
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for (i = 0; i < 5; ++i) {
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for (j = 1; j < 12; ++j) {
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test1(j * 1000);
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}
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}
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// A similar issue, different subexpression of unary ! (e0 !== e1 is
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// translated into !(e0 == e1)) and different effect context.
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function side_effect() { }
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function observe(x, y) { return x; }
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function test2(x) {
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return observe(this,
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(((side_effect.observe <= side_effect.side_effect) !== false),
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x + 1));
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}
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for (var i = 0; i < 5; ++i) test2(0);
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%OptimizeFunctionOnNextCall(test2);
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test2(0);
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test2(test2);
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