[PATCH] D108621: [HIPSPV] Add CUDA->SPIR-V address space mapping

[Alexey Bader via Phabricator via cfe-commits]

bader added inline comments.


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Comment at: clang/lib/Basic/Targets/SPIR.h:59
+    // translation). This mapping is enabled when the language mode is HIP.
+    1, // cuda_device
+    // cuda_constant pointer can be casted to default/"flat" pointer, but in
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Anastasia wrote:
> I am slightly confused as in the LLVM project those address spaces are for SPIR not SPIR-V though. It is however used outside of LLVM project by some tools like SPIRV-LLVM Translator as a path to SPIR-V, but it has only been done as a workaround since we had no SPIR-V support in the LLVM project yet. And if we are adding it let's do it clean to avoid/resolve any confusion.
> 
> I think we need to keep both because some vendors do target/use SPIR but not SPIR-V.
> 
> So if you are interested in SPIR-V and not SPIR you should probably add a new target that will make things cleaner.
> I think we need to keep both because some vendors do target/use SPIR but not SPIR-V.

@Anastasia, could you elaborate more on the difference between SPIR and SPIR-V?
I would like to understand what these terms mean in the context of LLVM project.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D108621/new/

https://reviews.llvm.org/D108621