[llvm-dev] [flang-dev] About OpenMP dialect in MLIR (original) (raw)

Johannes Doerfert via llvm-dev llvm-dev at lists.llvm.org
Tue Feb 18 09:41:41 PST 2020

On 02/18, Vinay Madhusudan via flang-dev wrote:

Given that there are unconcluded things in this thread about OpenMP representation for basic constructs (including target constructs) in MLIR and OpenMPIRBuilder being the high level common interface for Clang AST and optimized MLIR IR, I believe that it would be a good idea to wait for things until there is more clarity on OpenMP in MLIR.

I agree, there are open questions. However, most of them need empirical data to be answered properly. We cannot accurately predict what may or may not work wrt. optimizations that may or may not exist in the future.

What I try to say is that it seems to me the path forward described by Kiran will bring us closer to where we want to be, at least as far as we can describe that point at this time. What we should aim for is an approach that generates useful results (=code + insight) regardless of potential directions changes mid-way. We obviously have to reevaluate choices as we go, meaning the plan is not set in stone, but that is always the case anyway.

Please let me know if

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