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65 lines
2.4 KiB
65 lines
2.4 KiB
// Copyright 2013 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 --load-elimination
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// Test global load elimination in the presence of OSR compilation.
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function It(x, y) { }
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function foo_osr(x, limit) {
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var o = new It();
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o.x = x;
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o.y = x;
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for (var i = 0; i < limit; i++) {
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o.y += o.x; // Load of x cannot be hoisted due to OSR.
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}
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return o.y;
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}
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assertEquals(22, foo_osr(11, 1));
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assertEquals(24, foo_osr(12, 1));
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assertEquals(1300013, foo_osr(13, 100000));
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function foo_hot(x, limit) {
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var o = new It();
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o.x = x;
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o.y = x;
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for (var i = 0; i < limit; i++) {
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o.y += o.x; // Load of x can be hoisted without OSR.
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}
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return o.y;
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}
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assertEquals(22, foo_hot(11, 1));
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assertEquals(24, foo_hot(12, 1));
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%OptimizeFunctionOnNextCall(foo_hot);
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assertEquals(32, foo_hot(16, 1));
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assertEquals(1300013, foo_hot(13, 100000));
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