diff options
Diffstat (limited to 'js/src/jit-test/tests/cacheir/store-dense-element-hole-non-writable-length-at-start.js')
-rw-r--r-- | js/src/jit-test/tests/cacheir/store-dense-element-hole-non-writable-length-at-start.js | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/store-dense-element-hole-non-writable-length-at-start.js b/js/src/jit-test/tests/cacheir/store-dense-element-hole-non-writable-length-at-start.js new file mode 100644 index 0000000000..513fd6bc08 --- /dev/null +++ b/js/src/jit-test/tests/cacheir/store-dense-element-hole-non-writable-length-at-start.js @@ -0,0 +1,55 @@ +// Store an element into a previous hole value and later add more elements +// exceeding the initialised length. Cover both mono- and polymorphic call +// sites. The array has a non-writable length at the start. + +function testStoreDenseHole() { + var array = [/* hole */, /* hole */, /* hole */, /* hole */, ]; + Object.defineProperty(array, "length", { + writable: false + }); + + function store(ar, index) { + ar[index] = index; + } + + for (var i = 0; i < 10; ++i) { + store(array, i); + } + + assertEq(array.length, 4); + for (var i = 0; i < 4; ++i) { + assertEq(array[i], i); + } + for (var i = 4; i < 10; ++i) { + assertEq(i in array, false); + } +} +testStoreDenseHole(); + +function testStoreDenseHolePoly() { + var array = [/* hole */, /* hole */, /* hole */, /* hole */, ]; + Object.defineProperty(array, "length", { + writable: false + }); + + function store(ar, index) { + ar[index] = index; + } + + var objects = [array, {}]; + + for (var i = 0; i < 10; ++i) { + for (var j = 0; j < objects.length; ++j) { + store(objects[j], i); + } + } + + assertEq(array.length, 4); + for (var i = 0; i < 4; ++i) { + assertEq(array[i], i); + } + for (var i = 4; i < 10; ++i) { + assertEq(i in array, false); + } +} +testStoreDenseHolePoly(); |