js/src/jit-test/tests/ion/range-analysis.js@6474c204b198 (annotated)
js/src/jit-test/tests/ion/range-analysis.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 | // |jit-test| |
| michael@0 | 2 | |
| michael@0 | 3 | // Only fails with Ion. |
| michael@0 | 4 | function add_xors_1() { |
| michael@0 | 5 | var res = 0; |
| michael@0 | 6 | var step = 4; |
| michael@0 | 7 | for (var i = 0x7fffffff | 0; i >= (1 << step); i -= (i >> step)) { |
| michael@0 | 8 | var x = i ^ (i << 1); |
| michael@0 | 9 | res += (((x + x) + res + res) | 0); |
| michael@0 | 10 | } |
| michael@0 | 11 | return res; |
| michael@0 | 12 | } |
| michael@0 | 13 | |
| michael@0 | 14 | var r1 = add_xors_1(); |
| michael@0 | 15 | for (var i = 0; i < 100; i++) { |
| michael@0 | 16 | var r2 = add_xors_1(); |
| michael@0 | 17 | assertEq(r2, r1); |
| michael@0 | 18 | } |
| michael@0 | 19 | |
| michael@0 | 20 | // Only fails with JM |
| michael@0 | 21 | function add_xors_2() { |
| michael@0 | 22 | var res = 0; |
| michael@0 | 23 | var step = 4; |
| michael@0 | 24 | for (var i = 0x7fffffff | 0; i >= (1 << step); i -= (i >> step)) { |
| michael@0 | 25 | var x = i ^ (i << 1); |
| michael@0 | 26 | res += ((x + x) + res + res) | 0; |
| michael@0 | 27 | } |
| michael@0 | 28 | return res; |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | var r1 = add_xors_2(); |
| michael@0 | 32 | for (var i = 0; i < 100; i++) { |
| michael@0 | 33 | var r2 = add_xors_2(); |
| michael@0 | 34 | assertEq(r1, r2); |
| michael@0 | 35 | } |
