[llvm-dev] RISC-V LLVM sync-up call 12th Sep 2019 (original) (raw)
Alex Bradbury via llvm-dev llvm-dev at lists.llvm.org
Thu Sep 12 06:07:54 PDT 2019
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A group of us have been having weekly sync-up calls on RISC-V backend development for a while. It's not so much about decision-making, just general status update on WIP patches and discussing some wider ISA related issues that are relevant to LLVM and where we'd like more feedback. I think we've invited most active RISC-V backend contributors previously. If you've been left off the list, then I apologise. To ensure anyone with an interest knows of its existence and can drop in drop in, we thought it made sense to advertise on llvm-dev.
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 BST, via <https://meet.google.com/ske-zcog-spp>. I appreciate if you haven't joined previously that's no notice - but we look forward to talking next week or beyond!
Today issues to discuss include:
- GCC torture suite support in the LLVM test suite
- Still stuck on reviews and waiting on feedback re whether we need to support Makefile as well as CMake - see https://reviews.llvm.org/D66887
- Status of psABI sanity check
- Now in separate repo <https://github.com/lowRISC/riscv-elf-psabi-sanity-checker>
- Use of register arithmetic
- See <https://reviews.llvm.org/D67423>. Luís is updating the approach and will refresh the patch soon.
- Verifying MachineInstr immediates
- See <https://reviews.llvm.org/D67397>. This approach seems worthwhile to protect against programming errors, and it might be worth discussing how it could be applied to other backends (or indeed, if there's a better way of achieving the same goal).
- Sanitizers patch
- Needs a reviewer from a sanitizer expert rather than a RISC-V expert realy, but at first look seems sensible. Can anyone help out? <https://reviews.llvm.org/D66870>
- Statistics tracking in the backend
- Sam posted a patch to track the number of compressed instructions. <https://reviews.llvm.org/D67495>. We'd be interested in ideas others might have on stats it might be useful to track in addition to this.
Best,
Alex
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