1function foo(a, i) { 2 return [a[i], a[i + 1], a[i + 2], a[i + 3], a[i + 4], a[i + 5], a[i + 6], a[i + 7]]; 3} 4 5noInline(foo); 6 7function arraycmp(a, b) { 8 if (a.length != b.length) 9 return false; 10 for (var i = 0; i < a.length; ++i) { 11 if (a[i] != b[i]) 12 return false; 13 } 14 return true; 15} 16 17for (var i = 0; i < 100000; ++i) { 18 var array = []; 19 var offset = i & 3; 20 for (var j = 0; j < offset; ++j) 21 array.push(42); 22 var result = foo(array.concat([1, 2, 3, 4, 5, 6, 7, 8]), offset); 23 if (!arraycmp(result, [1, 2, 3, 4, 5, 6, 7, 8])) 24 throw "Error: bad result (1..8): " + result; 25} 26 27var result = foo([1, 2, 3, 4, 5, 6, 7], 0); 28if (!arraycmp(result, [1, 2, 3, 4, 5, 6, 7, void 0])) 29 throw "Error: bad result (1..7): " + result; 30var result = foo([1, 2, 3, 4, 5, 6], 0); 31if (!arraycmp(result, [1, 2, 3, 4, 5, 6, void 0, void 0])) 32 throw "Error: bad result (1..6): " + result; 33var result = foo([1, 2, 3, 4, 5], 0); 34if (!arraycmp(result, [1, 2, 3, 4, 5, void 0, void 0, void 0])) 35 throw "Error: bad result (1..5): " + result; 36var result = foo([1, 2, 3, 4], 0); 37if (!arraycmp(result, [1, 2, 3, 4, void 0, void 0, void 0, void 0])) 38 throw "Error: bad result (1..4): " + result; 39var result = foo([1, 2, 3], 0); 40if (!arraycmp(result, [1, 2, 3, void 0, void 0, void 0, void 0, void 0])) 41 throw "Error: bad result (1..3): " + result; 42var result = foo([1, 2], 0); 43if (!arraycmp(result, [1, 2, void 0, void 0, void 0, void 0, void 0, void 0])) 44 throw "Error: bad result (1..2): " + result; 45var result = foo([1], 0); 46if (!arraycmp(result, [1, void 0, void 0, void 0, void 0, void 0, void 0, void 0])) 47 throw "Error: bad result (1..1): " + result; 48var result = foo([], 0); 49if (!arraycmp(result, [void 0, void 0, void 0, void 0, void 0, void 0, void 0, void 0])) 50 throw "Error: bad result (1..1): " + result; 51