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3d1b3df948
PR-URL: https://github.com/nodejs/node/pull/15362 Reviewed-By: Myles Borins <myles.borins@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
38 lines
853 B
JavaScript
38 lines
853 B
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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var foo = 'foo';
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var bar = 'bar';
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var a;
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var b;
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var c;
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var d;
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function baz() { return 'baz'; }
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function test(arg) {
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// All add operations are constant folded by native context
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// specialization / inlining.
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a = '"' + foo + '-' + bar + '"';
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b = '"' + foo + '-' + baz() + '"';
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// Reduce down to a JSAdd of folded constant + arg.
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c = foo + bar + arg;
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// Reduces to two JSAdds with other arguments constant folded.
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d = '"' + foo + arg + bar + '"';
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}
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test('boo');
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%OptimizeFunctionOnNextCall(test);
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test('baa');
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assertEquals('"foo-bar"', a);
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assertEquals('"foo-baz"', b);
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assertEquals('foobarbaa', c);
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assertEquals('"foobaabar"', d);
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