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function testMegamorphicLoadSlot(i) {
var xs = [
{p: 0},
{a: 0, p: 1},
{a: 0, b: 0, p: 2},
{a: 0, b: 0, c: 0, p: 3},
{a: 0, b: 0, c: 0, d: 0, p: 4},
{a: 0, b: 0, c: 0, d: 0, e: 0, p: 5},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, p: 6},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, p: 7},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0, p: 8},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0, i: 0, p: 9},
];
var called = 0;
var obj = {
get p() {
called++;
}
};
for (var j = 0; j <= 100; ++j) {
// Don't use if-statements to avoid cold code bailouts.
var x = xs[j % 10];
var y = [x, obj][(i === 1 && j === 100)|0];
// Can't DCE this instruction.
y.p;
}
assertEq(i === 0 || called === 1, true);
}
for (var i = 0; i < 2; ++i) testMegamorphicLoadSlot(i);
function testMegamorphicLoadSlotByValue(i) {
var xs = [
{p: 0},
{a: 0, p: 1},
{a: 0, b: 0, p: 2},
{a: 0, b: 0, c: 0, p: 3},
{a: 0, b: 0, c: 0, d: 0, p: 4},
{a: 0, b: 0, c: 0, d: 0, e: 0, p: 5},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, p: 6},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, p: 7},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0, p: 8},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0, i: 0, p: 9},
];
var called = 0;
var obj = {
get p() {
called++;
}
};
var p = "p";
for (var j = 0; j <= 100; ++j) {
// Don't use if-statements to avoid cold code bailouts.
var x = xs[j % 10];
var y = [x, obj][(i === 1 && j === 100)|0];
// Can't DCE this instruction.
y[p];
}
assertEq(i === 0 || called === 1, true);
}
for (var i = 0; i < 2; ++i) testMegamorphicLoadSlotByValue(i);
function testMegamorphicHasProp(i) {
var xs = [
{p: 0},
{a: 0, p: 1},
{a: 0, b: 0, p: 2},
{a: 0, b: 0, c: 0, p: 3},
{a: 0, b: 0, c: 0, d: 0, p: 4},
{a: 0, b: 0, c: 0, d: 0, e: 0, p: 5},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, p: 6},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, p: 7},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0, p: 8},
{a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0, i: 0, p: 9},
];
var called = 0;
var obj = new Proxy({}, {
has() {
called++;
}
});
for (var j = 0; j <= 100; ++j) {
// Don't use if-statements to avoid cold code bailouts.
var x = xs[j % 10];
var y = [x, obj][(i === 1 && j === 100)|0];
// Can't DCE this instruction.
"p" in y;
}
assertEq(i === 0 || called === 1, true);
}
for (var i = 0; i < 2; ++i) testMegamorphicHasProp(i);