[PATCH] D83242: [RFC][BPF] support expr with typedef type for FIELD_EXISTENCE reloc

[Andrii Nakryiko via Phabricator via cfe-commits]

anakryiko added a comment.

Awesome, that's exactly what we need for BPF helper availability checks!

Can you please also add test that this pattern works:

  return __builtin_preserve_field_info((btf_bpf_read_branch_records)0, FIELD_EXISTENCE);

Also for non-func pointer typedefs, something like this would work as well, right?

  return __builtin_preserve_field_info(*(T *)0, FIELD_EXISTENCE);


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D83242