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comparison: js/src/jit-test/tests/arguments/access-formals.js
js/src/jit-test/tests/arguments/access-formals.js
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- 6474c204b198
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| -1:000000000000 | 0:7ab9735efb44 |
|---|---|
| 1 function g1(x, args) { | |
| 2 args[0] = 88; | |
| 3 } | |
| 4 | |
| 5 // We assume we can optimize arguments access in |f|. | |
| 6 // | |
| 7 // Then the apply-call invalidates the arguments optimization, | |
| 8 // and creates a real arguments object. | |
| 9 // | |
| 10 // Test that x and y fetch the values from the args object when | |
| 11 // that happens. | |
| 12 function f1(x, y, o) { | |
| 13 var res = 0; | |
| 14 for (var i=0; i<50; i++) { | |
| 15 res += x + y; | |
| 16 if (i > 10) | |
| 17 o.apply(null, arguments); | |
| 18 } | |
| 19 return res; | |
| 20 } | |
| 21 | |
| 22 var o1 = {apply: g1}; | |
| 23 assertEq(f1(3, 5, o1), 3630); | |
| 24 assertEq(f1(3, 5, o1), 3630); | |
| 25 | |
| 26 // In strict mode, the arguments object does not alias formals. | |
| 27 function g2(x, args) { | |
| 28 args[0] = 88; | |
| 29 } | |
| 30 | |
| 31 function f2(x, y, o) { | |
| 32 "use strict"; | |
| 33 var res = 0; | |
| 34 for (var i=0; i<50; i++) { | |
| 35 res += x + y; | |
| 36 if (i > 10) | |
| 37 o.apply(null, arguments); | |
| 38 } | |
| 39 return res; | |
| 40 } | |
| 41 | |
| 42 var o2 = {apply: g2}; | |
| 43 assertEq(f2(3, 5, o2), 400); | |
| 44 assertEq(f2(3, 5, o2), 400); |
