RISC-V LLVM sync-up call 29 October 2020

Please Note: The UK Timezone has changed for daylight savings and this will be held at 4pm GMT today.

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

Reminder: the purpose is to co-ordinate 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 UK Time, via
<https://meet.google.com/ske-zcog-spp>.

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

Issues to discuss today include the following:
* Emergency spill slot fix <https://reviews.llvm.org/D89239>
* Initial infrastructure for code generation of the RISC-V V extension <https://reviews.llvm.org/D89449>
* `-mtune` support landed in LLVM - next RISC-V steps?
* Long Conditional Branches
* Any other business?

(Alex is out sick today, so Luis and I will lead the call).

Thanks,

Sam