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comparison: js/src/jit-test/tests/ion/ArrayLengthGetPropertyIC.js
js/src/jit-test/tests/ion/ArrayLengthGetPropertyIC.js
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- 6474c204b198
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| -1:000000000000 | 0:abc588f5af4d |
|---|---|
| 1 function intLength (a, l) { | |
| 2 var res = 0; | |
| 3 for (var i = 0; i < l; i++) | |
| 4 res += a.length; | |
| 5 return res / l; | |
| 6 } | |
| 7 | |
| 8 function valueLength (a, l) { | |
| 9 var res = 0; | |
| 10 for (var i = 0; i < l; i++) | |
| 11 res += a.length; | |
| 12 return res / l; | |
| 13 } | |
| 14 | |
| 15 var denseArray = [0,1,2,3,4,5,6,7,8,9]; | |
| 16 var typedArray = new Uint8Array(10); | |
| 17 var hugeArray = new Array(4294967295); | |
| 18 var fakeArray1 = { length: 10 }; | |
| 19 var fakeArray2 = { length: 10.5 }; | |
| 20 | |
| 21 // Check the interpreter result and play with TI type objects. | |
| 22 assertEq(intLength(denseArray, 10), 10); | |
| 23 assertEq(intLength(typedArray, 10), 10); | |
| 24 // assertEq(intLength(fakeArray1, 10), 10); | |
| 25 | |
| 26 assertEq(valueLength(denseArray, 10), 10); | |
| 27 assertEq(valueLength(typedArray, 10), 10); | |
| 28 assertEq(valueLength(hugeArray , 10), 4294967295); | |
| 29 assertEq(valueLength(fakeArray2, 10), 10.5); | |
| 30 | |
| 31 // Heat up to compile (either JM / Ion) | |
| 32 assertEq(intLength(denseArray, 100), 10); | |
| 33 assertEq(valueLength(denseArray, 100), 10); | |
| 34 | |
| 35 // No bailout should occur during any of the following checks: | |
| 36 | |
| 37 // Check get-property length IC with dense array. | |
| 38 assertEq(intLength(denseArray, 1), 10); | |
| 39 assertEq(valueLength(denseArray, 1), 10); | |
| 40 | |
| 41 // Check get-property length IC with typed array. | |
| 42 assertEq(intLength(typedArray, 1), 10); | |
| 43 assertEq(valueLength(typedArray, 1), 10); | |
| 44 | |
| 45 // Check length which do not fit on non-double value. | |
| 46 assertEq(valueLength(hugeArray, 1), 4294967295); | |
| 47 | |
| 48 // Check object length property. | |
| 49 assertEq(intLength(fakeArray1, 1), 10); | |
| 50 assertEq(valueLength(fakeArray2, 1), 10.5); | |
| 51 | |
| 52 // Cause invalidation of intLength by returning a double. | |
| 53 assertEq(intLength(hugeArray, 1), 4294967295); | |
| 54 assertEq(intLength(fakeArray2, 1), 10.5); |
