js/src/jit-test/tests/arguments/inline-arguments-spread-optimization.js


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
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

// |jit-test| --fast-warmup


function foo(...args) {
    with ({}) {}
    return args.length;
}

function inner() {
    // Single argument spread calls with |arguments| can be optimised.
    return foo(...arguments);
}

function outer0() {
    trialInline();
    return inner();
}

function outer1() {
    trialInline();
    return inner(1);
}

function outer2() {
    trialInline();
    return inner(1, 2);
}

function outer3() {
    trialInline();
    return inner(1,2,3)
}

function outer4() {
    trialInline();
    return inner(1,2,3,4)
}

with ({}) {}

for (var i = 0; i < 50; i++) {
    assertEq(outer0(), 0);
    assertEq(outer1(), 1);
    assertEq(outer2(), 2);
    assertEq(outer3(), 3);
    assertEq(outer4(), 4);
}