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// 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;
}
// %ArrayIteratorPrototype%'s [[Prototype]] was changed, as a result all properties are marked as unknown.
function test() {
var ArrayIteratorPrototype = Object.getPrototypeOf(Array.prototype[Symbol.iterator]());
Object.setPrototypeOf(ArrayIteratorPrototype, null);
function fn(...rest) {
return add(...rest);
}
for (var i = 0; i < 2000; ++i) {
assertEq(fn(1, 2), 3);
}
}
test();