blob: 006b77442bf3bd892897fd5ab613893151081a76 (
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
28
29
30
31
32
33
34
35
36
37
38
39
|
// |jit-test| allow-oom
// Appending elements to a dense array should make the array sparse when the
// length exceeds the limit.
function test() {
const MAX_DENSE_ELEMENTS_ALLOCATION = (1 << 28) - 1;
const VALUES_PER_HEADER = 2;
const MAX_DENSE_ELEMENTS_COUNT = MAX_DENSE_ELEMENTS_ALLOCATION - VALUES_PER_HEADER;
const SPARSE_DENSITY_RATIO = 8;
const MIN_DENSE = MAX_DENSE_ELEMENTS_COUNT / SPARSE_DENSITY_RATIO;
const MARGIN = 16;
let a = [];
// Fill the beginning of array to make it keep dense until length exceeds
// MAX_DENSE_ELEMENTS_COUNT.
for (let i = 0; i < MIN_DENSE; i++)
a[i] = i;
// Skip from MIN_DENSE to MAX_DENSE_ELEMENTS_COUNT - MARGIN, to reduce the
// time taken by test.
// Fill the ending of array to make it sparse at MAX_DENSE_ELEMENTS_COUNT.
for (let i = MAX_DENSE_ELEMENTS_COUNT - MARGIN; i < MAX_DENSE_ELEMENTS_COUNT + MARGIN; i++)
a[i] = i;
// Make sure the last element is defined.
assertEq(a.length, MAX_DENSE_ELEMENTS_COUNT + MARGIN);
assertEq(a[a.length - 1], MAX_DENSE_ELEMENTS_COUNT + MARGIN - 1);
// Make sure elements around MAX_DENSE_ELEMENTS_COUNT are also defined.
assertEq(a[MAX_DENSE_ELEMENTS_COUNT - 1], MAX_DENSE_ELEMENTS_COUNT - 1);
assertEq(a[MAX_DENSE_ELEMENTS_COUNT], MAX_DENSE_ELEMENTS_COUNT);
assertEq(a[MAX_DENSE_ELEMENTS_COUNT + 1], MAX_DENSE_ELEMENTS_COUNT + 1);
}
// Takes too long time on debug build.
if (!getBuildConfiguration("debug")) {
test();
}
|
