Alex MacLean 07ed8187ac [OpenMP] Replace nvvm.annotation usage with kernel calling conventions (#122320) ...

Specifying a kernel with the `ptx_kernel` or `amdgpu_kernel` calling
convention is a more idiomatic and compile-time performant than using
the `nvvm.annoation !"kernel"` metadata.

Transition OMPIRBuilder to use calling conventions for PTX kernels and
no longer emit `nvvm.annoation`. Update OpenMPOpt to work with kernels
specified via calling convention as well as metadata. Update OpenMP
tests to use the calling conventions.

2025-01-24 16:56:10 -08:00

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