Buildbots, busy week that took up most of spare time - deploying timezone fix to containers - a couple of weekend patches that broke Arm and AArch64 bisected and followed up. - difficult to track down stage-2 failure that was difficult to work out whether there was a bug in clang, or a code-gen failure in the backend, also made it harder to bisect. Turned out that it had caused more easy to bisect failures in other projects and by the time I'd found the patch it had been fixed.
[ClangBuiltLinux] LLD's simplified interworking looks to be insufficient for the linux kernel thumb-2 build. Got agreement with upstream on how to proceed. Have a patch ready to send upstream.
A small amount of upstream review and bisecting some Linaro CI build failure for the -fpatchable-functions feature in Clang-10. Looks to have been resolved.