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comparison: js/src/jit-test/tests/ion/bug-770309-mcall-bailout.js
js/src/jit-test/tests/ion/bug-770309-mcall-bailout.js
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| -1:000000000000 | 0:fdf15c35c676 |
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| 1 | |
| 2 // Test various code paths associated with fused getprop/poly inlining. | |
| 3 | |
| 4 function A(a) { this.a = a; } | |
| 5 A.prototype.foo = function (x) { return (x % 3) + this.a; }; | |
| 6 | |
| 7 function B(b) { this.b = b; } | |
| 8 B.prototype.foo = function (x) { return (x % 3) + this.b + 1; }; | |
| 9 | |
| 10 // c.foo() for some (c instanceof C) should always hit the fallback | |
| 11 // path of any fused poly inline cache created for it. | |
| 12 function C(c) { this.c = c; } | |
| 13 var GLOBX = {'x': function (x) { | |
| 14 if (x > 29500) | |
| 15 throw new Error("ERROR"); | |
| 16 return 2; | |
| 17 }}; | |
| 18 function C_foo1(x) { | |
| 19 return (x % 3) + this.c + GLOBX.x(x) + 1; | |
| 20 } | |
| 21 function C_foo2(x) { | |
| 22 return (x % 3) + this.c + GLOBX.x(x) + 2; | |
| 23 } | |
| 24 C.prototype.foo = C_foo1; | |
| 25 | |
| 26 // Create an array of As, Bs, and Cs. | |
| 27 function makeArray(n) { | |
| 28 var classes = [A, B, C]; | |
| 29 var arr = []; | |
| 30 for (var i = 0; i < n; i++) { | |
| 31 arr.push(new classes[i % 3](i % 3)); | |
| 32 } | |
| 33 return arr; | |
| 34 } | |
| 35 | |
| 36 // Call foo on them, sum up results into first elem of resultArray | |
| 37 function runner(arr, resultArray, len) { | |
| 38 for (var i = 0; i < len; i++) { | |
| 39 // This changes the type of returned value from C.foo(), leading to | |
| 40 // a bailout fater the call obj.foo() below. | |
| 41 var obj = arr[i]; | |
| 42 resultArray[0] += obj.foo(i); | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 // Make an array of instance. | |
| 47 var resultArray = [0]; | |
| 48 var arr = makeArray(30000); | |
| 49 | |
| 50 // Run runner for a bit with C.prototype.foo being C_foo1 | |
| 51 runner(arr, resultArray, 100); | |
| 52 | |
| 53 // Run runner for a bit with C.prototype.foo being C_foo2 | |
| 54 C.prototype.foo = C_foo2; | |
| 55 runner(arr, resultArray, 100); | |
| 56 | |
| 57 // Run runner for a bit longer to force GLOBX.x to raise | |
| 58 // an error inside a call to C.prototype.foo within runner. | |
| 59 var gotError = false; | |
| 60 try { | |
| 61 runner(arr, resultArray, 30000); | |
| 62 } catch(err) { | |
| 63 gotError = true; | |
| 64 } | |
| 65 | |
| 66 // Check results. | |
| 67 assertEq(gotError, true); | |
| 68 assertEq(resultArray[0], 108859); |
