llvm dev - Jul 2021 - RISC-V LLVM sync-up call 22nd July 2021

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

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>. 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>
 *
<https://calendar.google.com/calendar/ical/lowrisc.org_0n5pkesfjcnp0bh5hps1p0bd80%40group.calendar.google.com/public/basic.ics>

Agenda:
* Staging of RVV v1.0-rc changes <https://reviews.llvm.org/D105690>, and
any
  additional thoughts on any need to support multiple RVV versions
  <https://lists.llvm.org/pipermail/llvm-dev/2021-July/151651.html>
* Encoding arch information in a new module flag 'riscv-isa-features'
  <https://reviews.llvm.org/D106347>
* Relax ABI mismatch checking <https://reviews.llvm.org/D106378>
* Unify arch string parsing logic to RISCVISAInfo
  <https://reviews.llvm.org/D105168>
* Add support for -msave-restore with tailcalls
  <https://reviews.llvm.org/D91719>
* Patches / PRs to highlight for review
  * Data mapping symbol proposal
    <https://github.com/riscv/riscv-elf-psabi-doc/pull/196>
  * RISCV64 support for jitlink <https://reviews.llvm.org/D105429>
* Any other business

Best,

Alex