RISC-V LLVM sync-up call 16th September 2021

For background on these calls, see
<http://lists.llvm.org/pipermail/llvm-dev/2019-September/135087.html&gt;\.

Reminder: the purpose is to coordinate between active contributors.
If you have support questions etc then it's best to post to llvm-dev.

We have a call every alternate Thursday at 4pm BST, via
<https://meet.google.com/ske-zcog-spp&gt;\. If you have topics to discuss,
please email me ahead of time and I can add them to the agenda.

We have a shared calendar that may help in keeping track, which is
accessible at:
* <https://calendar.google.com/calendar/b/1?cid=bG93cmlzYy5vcmdfMG41cGtlc2ZqY25wMGJoNWhwczFwMGJkODBAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ&gt;
* <https://calendar.google.com/calendar/ical/lowrisc.org_0n5pkesfjcnp0bh5hps1p0bd80%40group.calendar.google.com/public/basic.ics&gt;

Agenda:
* Support for relaxing out of range conditional branches
<Login;
<https://github.com/riscv-non-isa/riscv-asm-manual/pull/58&gt;
* Documenting R_RISCV_ALIGN in the psABI spec
<https://github.com/riscv/riscv-elf-psabi-doc/pull/210&gt;
* RISC-V overlay system RFC <Login;
* Ben's optimization patches <Login;
<Login; <Login;
* Checking the status of older patches, such as
  * riscv-isa-features metadata PoC <Login;
  * RISCVISAInfo unified arch info handling <Login;
* AOB