[PATCH] D109818: [HIPSPV] Convert HIP kernels to SPIR-V kernels

[Henry Linjamäki via Phabricator via cfe-commits]

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Rebase.


linjamaki added a comment.

Rebase.


This patch translates HIP kernels to SPIR-V kernels when the HIP 
compilation mode is targeting SPIR-S. This involves:

- Setting Cuda calling convention to CC_OpenCLKernel (which maps to SPIR_KERNEL in LLVM IR later on).

- Coercing pointer arguments with default address space (AS) qualifier to CrossWorkGroup AS (__global in OpenCL). HIPSPV's device code is ultimately SPIR-V for OpenCL execution environment (as starter/default) where Generic or Function (OpenCL's private) is not supported as storage class for kernel pointer types. This leaves the CrossWorkGroup to be the only reasonable choice for HIP buffers.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D109818

Files:
  clang/lib/CodeGen/TargetInfo.cpp
  clang/test/CodeGenHIP/hipspv-kernel.cpp

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