summaryrefslogtreecommitdiffstats
path: root/js/src/jit-test/tests/ion/spreadcall-not-optimized-static-2a.js
blob: e9ec676c91e7bf88a1b77f9aa51caf0681db85b1 (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, c = 0, d = 0) {
    return a + b + c + d;
}

// The rest argument contains holes.
function test() {
    function fn(...rest) {
        rest[3] = 4;
        return add(...rest);
    }
    for (var i = 0; i < 2000; ++i) {
        assertEq(fn(1, 2), 7);
    }
}
test();