RISC-V LLVM sync-up call 12 Mar 2020

For background on these calls, see

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 each Thursday at 4pm GMT, via

Alex has created 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:
* Small Data Limit Patch: https://reviews.llvm.org/D57497
* Assembler Predicate Combining: https://reviews.llvm.org/D74338
* Materialising FP Zeroes: https://reviews.llvm.org/D75729
* Decoding Trapping Instructions (in Sanitizers): https://reviews.llvm.org/D75168
* GlobalISel Patches:
  * https://reviews.llvm.org/D76051
  * https://reviews.llvm.org/D76007
* ELF Attributes
  * https://reviews.llvm.org/D75833
  * https://reviews.llvm.org/D75833
* Embedded PIC
  * WD’s proposal: https://groups.google.com/a/groups.riscv.org/forum/#!msg/sw-dev/ZjYUJswknQ4/WYRRylTwAAAJ
* No other topics were submitted, as always, please do submit things
you'd like to discuss


Sam (on behalf of Alex, who is out today)