| 446 | (function() { |
| 447 | var result = 0; |
| 448 | var to_fast = function() { |
| 449 | var callback = function(v,i,o) { |
| 450 | result += v; |
| 451 | if (i < 5) { |
| 452 | // First transition the output array to PACKED_DOUBLE_ELEMENTS. |
| 453 | return v + 0.5; |
| 454 | } else if (i < 10) { |
| 455 | // Then return smi values and make sure they can live in the double |
| 456 | // array. |
| 457 | return v; |
| 458 | } else { |
| 459 | // Later, to PACKED_ELEMENTS. |
| 460 | return v + 'hello'; |
| 461 | } |
| 462 | }; |
| 463 | %EnsureFeedbackVectorForFunction(callback); |
| 464 | return c.map(callback); |
| 465 | }; |
| 466 | %PrepareFunctionForOptimization(to_fast); |
| 467 | to_fast(); |
| 468 | to_fast(); |