Spec can be found here https://github.com/intel/llvm/pull/15225
TODO for future patches:
- During spec review need to decide whether only FunctionCall or Atomic
instructions can be decorated and if not - move the code around adding
handling for other instructions;
- Handle optional string metadata;
- Handle LLVM atomic instructions;
- Handle SPIR-V friendly atomic calls returning via sret argument.
Signed-off-by: Sidorov, Dmitry <dmitry.sidorov@intel.com>
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