On Mon, 26 Oct 2026 22:23:12 GMT, Benjamin Peterson <[email protected]> wrote:
> Add `-fpch-instantiate-templates` to the clang precompiled header generation > command. > > Testing with `make hotspot`, I observe a 40% reduction in build CPU time for > a release build. On a 56 core machine, this reduces the wall time of the same > command by 25% (45.94s -> 34.5s). > > > > > --------- > - [x] I confirm that I make this contribution in accordance with the [OpenJDK > Interim AI Policy](https://openjdk.org/legal/ai). What platforms did you test this on? >From what I read there can be some issues using PCH template instantiation, so >we need to know this will generally be a good thing everyone. Currently running this through our CI for tiers 1-5, but I don't think we are a heavy user of Clang, so this may be more of an issue for other distros. ------------- PR Comment: https://git.openjdk.org/jdk/pull/33576#issuecomment-6430889454
