46 lines
831 B
JavaScript
46 lines
831 B
JavaScript
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// Copyright 2020 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 --turboprop --dynamic-map-checks --opt
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// Flags: --no-always-opt
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function load(obj){
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return obj.x;
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}
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%PrepareFunctionForOptimization(load);
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obj = {};
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obj.x = 1;
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//get mono feedback
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load(obj);
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load(obj);
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// optimize as mono
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%OptimizeFunctionOnNextCall(load);
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load(obj);
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assertOptimized(load);
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load(obj);
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// transition to poly - should retain optimized code
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obj.y = 2;
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load(obj);
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assertOptimized(load);
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load(obj);
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// transition to more polymorphic
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obj.z = 3;
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load(obj);
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obj.q =4;
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load(obj);
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// transition to megamorphic
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assertOptimized(load);
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obj.r = 5;
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load(obj);
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obj.s = 6;
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load(obj);
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assertUnoptimized(load);
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load(obj);
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