js/src/jit-test/tests/ion/getprop-idempotent-cache-2.js@6474c204b198 (annotated)
js/src/jit-test/tests/ion/getprop-idempotent-cache-2.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | function f(o) { |
| michael@0 | 2 | var res = 0; |
| michael@0 | 3 | for (var i=0; i<110; i++) { |
| michael@0 | 4 | res += o.x; |
| michael@0 | 5 | } |
| michael@0 | 6 | return res; |
| michael@0 | 7 | } |
| michael@0 | 8 | |
| michael@0 | 9 | function O(x) { |
| michael@0 | 10 | if ([].length == 0) // Thwart definite slot analysis. |
| michael@0 | 11 | this.x = 10; |
| michael@0 | 12 | } |
| michael@0 | 13 | |
| michael@0 | 14 | var o = new O(true); |
| michael@0 | 15 | f(o); |
| michael@0 | 16 | |
| michael@0 | 17 | // Add a getter, this should invalidate the script containing the idempotent cache. |
| michael@0 | 18 | var res = 0; |
| michael@0 | 19 | o.__defineGetter__("x", function() { res++; }); |
| michael@0 | 20 | f(o); |
| michael@0 | 21 | assertEq(res, 110); |
