michael@0: function intLength (a, l) {
michael@0:     var res = 0;
michael@0:     for (var i = 0; i < l; i++)
michael@0:         res += a.length;
michael@0:     return res / l;
michael@0: }
michael@0: 
michael@0: function valueLength (a, l) {
michael@0:     var res = 0;
michael@0:     for (var i = 0; i < l; i++)
michael@0:         res += a.length;
michael@0:     return res / l;
michael@0: }
michael@0: 
michael@0: var denseArray = [0,1,2,3,4,5,6,7,8,9];
michael@0: var typedArray = new Uint8Array(10);
michael@0: var hugeArray  = new Array(4294967295);
michael@0: var fakeArray1 = { length: 10 };
michael@0: var fakeArray2 = { length: 10.5 };
michael@0: 
michael@0: // Check the interpreter result and play with TI type objects.
michael@0: assertEq(intLength(denseArray, 10), 10);
michael@0: assertEq(intLength(typedArray, 10), 10);
michael@0: // assertEq(intLength(fakeArray1, 10), 10);
michael@0: 
michael@0: assertEq(valueLength(denseArray, 10), 10);
michael@0: assertEq(valueLength(typedArray, 10), 10);
michael@0: assertEq(valueLength(hugeArray , 10), 4294967295);
michael@0: assertEq(valueLength(fakeArray2, 10), 10.5);
michael@0: 
michael@0: // Heat up to compile (either JM / Ion)
michael@0: assertEq(intLength(denseArray, 100), 10);
michael@0: assertEq(valueLength(denseArray, 100), 10);
michael@0: 
michael@0: // No bailout should occur during any of the following checks:
michael@0: 
michael@0: // Check get-property length IC with dense array.
michael@0: assertEq(intLength(denseArray, 1), 10);
michael@0: assertEq(valueLength(denseArray, 1), 10);
michael@0: 
michael@0: // Check get-property length IC with typed array.
michael@0: assertEq(intLength(typedArray, 1), 10);
michael@0: assertEq(valueLength(typedArray, 1), 10);
michael@0: 
michael@0: // Check length which do not fit on non-double value.
michael@0: assertEq(valueLength(hugeArray, 1), 4294967295);
michael@0: 
michael@0: // Check object length property.
michael@0: assertEq(intLength(fakeArray1, 1), 10);
michael@0: assertEq(valueLength(fakeArray2, 1), 10.5);
michael@0: 
michael@0: // Cause invalidation of intLength by returning a double.
michael@0: assertEq(intLength(hugeArray, 1), 4294967295);
michael@0: assertEq(intLength(fakeArray2, 1), 10.5);