| // Copyright 2020 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Flags: --allow-natives-syntax --turboprop --turboprop-dynamic-map-checks --opt |
| // Flags: --no-always-opt |
| |
| function load(obj){ |
| return obj.x; |
| } |
| |
| var o = {x: 10, y:20}; |
| var o1 = {x:10, y:20, z:30}; |
| |
| %PrepareFunctionForOptimization(load); |
| // polymorphic with same handler |
| load(o); |
| load(o1); |
| |
| %OptimizeFunctionOnNextCall(load); |
| load(o); |
| load(o1); |
| assertOptimized(load); |
| |
| var o2 = {y: 10, x:20}; |
| // deopts but stays optimized |
| load(o2); |
| assertOptimized(load); |
| |
| // deopts and discard code on wrong handler |
| load(o2); |
| assertUnoptimized(load); |
