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