On Mon, 13 Dec 2021 09:50:26 GMT, Alan Hayward <d...@openjdk.java.net> wrote:
> You can support one without the other. The architecture allows you to have > one without the other. The GCC flag is an enum of > "none|standard|pac-ret[+leaf]|bti", with some of them changing depending on > which cpu you specify to -mcpu (8.0,8.3,8.5 etc). Clang has the same flags. OK, so we have a precedent. > If your system had both, the only scenario I could see for only wanting just > one would be for test/dev purposes. In a real production scenario you would > want everything the system supports or nothing. Yes. > An earlier version of my code had a > UseBranchProtection="pac|bti|pac+bti|all|none" style option That sounds great. It seems to me that following the GCC/Clang precedent is the wisest thing we could do. I can see no possible advantage in diverging: it only confuses programmers. ------------- PR: https://git.openjdk.java.net/jdk/pull/6334
