TLDR: This can happen, but is not done much in practice. Most vendors use pretty similar build toolchains in order to maintain platform support baselines. Typ

TLDR: This can happen, but is not done much in practice. Most vendors use pretty similar build toolchains in order to maintain platform support baselines. Typically any improvements get made at OpenJDK and then filter back down to downstream distributions. One of the things we're looking to do is to add Metadata to the release to make the exact toolchain transparent going forward.