| // Create a really long prototype chain. |
| |
| // We need to put values on so the objects are not empty and have transition |
| // watchpoints. |
| function buildChain(depth) { |
| if (depth <= 0) |
| return { bloop: 1 }; |
| let result = { value: 1 }; |
| Object.setPrototypeOf(result, buildChain(depth - 1)); |
| return result; |
| } |
| |
| |
| var object = buildChain(20); |
| |
| function body() { |
| for (let i = 0; i < 100000; i++) |
| value = object.toString(); |
| } |
| noInline(body); |
| |
| // Try toString with misses. |
| body(); |
| |
| Object.prototype[Symbol.toStringTag] = "hit"; |
| |
| // Try toString with hit. |
| body(); |
