8065804: JEP 171: Clarifications/corrections for fence intrinsics
Reviewed-by: dholmes, shade, dl, psandoz
1: false === false
2: false === false
3: true === true
4: true === true
5: true === true
6: false === false
7: false === false
8: false === false
9: false === false
10: false === false
11: true === true
12: true === true
13: false === false
14: false === false
15: false === false
16: true === true
17: true === true
18: true === true
19: true === true
20: true === true
21: false === false
22: false === false
23: true === true
24: true === true
25: true === true
26: false === false
27: false === false
28: false === false
29: false === false
30: false === false
31: true === true
32: true === true
33: false === false
34: false === false
35: false === false
36: true === true
37: true === true
38: true === true
39: true === true
40: true === true