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| 1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 the V8 project authors. All rights reserved. | 
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be | 
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. | 
| 4 | 4 | 
| 5 // Flags: --allow-natives-syntax | 5 // Flags: --allow-natives-syntax --crankshaft | 
| 6 | 6 | 
| 7 function bar(a) { | 7 function bar(a) { | 
| 8   var x = a[0]; | 8   var x = a[0]; | 
| 9   return x == undefined; | 9   return x == undefined; | 
| 10 } | 10 } | 
| 11 | 11 | 
| 12 // Make the keyed load be polymorphic on holey smi and holey fast. | 12 // Make the keyed load be polymorphic on holey smi and holey fast. | 
| 13 bar([, 2, 3]); | 13 bar([, 2, 3]); | 
| 14 bar([, 'two', 'three']); | 14 bar([, 'two', 'three']); | 
| 15 bar([, 2, 3]); | 15 bar([, 2, 3]); | 
| 16 | 16 | 
| 17 %OptimizeFunctionOnNextCall(bar); | 17 %OptimizeFunctionOnNextCall(bar); | 
| 18 bar([, 2, 3]); | 18 bar([, 2, 3]); | 
| 19 // Verify that loading the hole doesn't cause deoptimization. | 19 // Verify that loading the hole doesn't cause deoptimization. | 
| 20 assertOptimized(bar); | 20 assertOptimized(bar); | 
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