[llvm-dev] [RFC] Upstreaming a proper SPIR-V backend (original) (raw)

Renato Golin via llvm-dev llvm-dev at lists.llvm.org
Tue Mar 2 02:11:31 PST 2021

On Tue, 2 Mar 2021 at 09:36, Trifunovic, Konrad via llvm-dev < llvm-dev at lists.llvm.org> wrote:

Hi all,

We would like to propose this RFC for upstreaming a proper SPIR-V backend to LLVM:

Hi,

Perhaps a parallel question: how does that integrate with MLIR's SPIRV back-end?

If this proposal goes through and we have a production-quality SPIRV back-end in LLVM, do we remove MLIR's own version and lower to LLVM, then to SPIRV? Or do we still need the MLIR version?

In a perfect world, translating to LLVM IR then to SPIRV shouldn't make a difference, but there could be some impedance mismatch between MLIR->LLVM lowering that isn't compatible with SPIRV?

But as a final goal, if SPIRV becomes an official LLVM target, it would be better if we could iron out the impedance problems and keep only one SPIRV backend.

cheers, --renato -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20210302/0b58cfd0/attachment.html>

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