| // Copyright 2016 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 --opt | |
| // The Crankshaft fast case for String.fromCharCode used to unconditionally | |
| // deoptimize on non int32 indices. | |
| function foo(i) { return String.fromCharCode(i); } | |
| %PrepareFunctionForOptimization(foo); | |
| foo(33); | |
| foo(33); | |
| %OptimizeFunctionOnNextCall(foo); | |
| foo(33.3); | |
| assertOptimized(foo); |