blob: 4d5d8fec855a045b96bdb4e5353564d55cc3736d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
// Tests when JSOP_OPTIMIZE_SPREADCALL can't be applied during the initial
// Ion compilation.
// JSOP_OPTIMIZE_SPREADCALL can be optimised when the following conditions
// are fulfilled:
// (1) the argument is an array
// (2) the array has no hole
// (3) array[@@iterator] is not modified
// (4) the array's prototype is Array.prototype
// (5) Array.prototype[@@iterator] is not modified
// (6) %ArrayIteratorPrototype%.next is not modified
function add(a, b) {
return a + b;
}
// Array.prototype's [[Prototype]] was changed, as a result all properties are marked as unknown.
function test() {
Object.setPrototypeOf(Array.prototype, null);
function fn(...rest) {
return add(...rest);
}
for (var i = 0; i < 2000; ++i) {
assertEq(fn(1, 2), 3);
}
}
test();
|
