44ffa0dcd3
This allows Crankshaft to generate monomorphic loads when the receiver type is statically known even though the load site has polymorphic type feedback. This applies to inlined constructor calls and literals. R=jkummerow@chromium.org TEST=mjsunit/compiler/property-static Review URL: https://codereview.chromium.org/12051058 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13500 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
70 lines
2.7 KiB
JavaScript
70 lines
2.7 KiB
JavaScript
// 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
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// Test usage of static type information for loads that would otherwise
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// turn into polymorphic or generic loads.
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// Prepare a highly polymorphic load to be used by all tests.
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Object.prototype.load = function() { return this.property; };
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Object.prototype.load.call({ A:0, property:10 });
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Object.prototype.load.call({ A:0, B:0, property:11 });
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Object.prototype.load.call({ A:0, B:0, C:0, property:12 });
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Object.prototype.load.call({ A:0, B:0, C:0, D:0, property:13 });
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Object.prototype.load.call({ A:0, B:0, C:0, D:0, E:0, property:14 });
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Object.prototype.load.call({ A:0, B:0, C:0, D:0, E:0, F:0, property:15 });
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// Test for object literals.
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(function() {
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function f(x) {
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var object = { property:x };
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return object.load();
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}
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assertSame(1, f(1));
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assertSame(2, f(2));
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%OptimizeFunctionOnNextCall(f);
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assertSame(3, f(3));
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})();
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// Test for inlined constructors.
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(function() {
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function c(x) {
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this.property = x;
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}
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function f(x) {
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var object = new c(x);
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return object.load();
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}
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assertSame(1, f(1));
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assertSame(2, f(2));
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%OptimizeFunctionOnNextCall(f);
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assertSame(3, f(3));
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})();
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