Summary:
We used this globally scoped `ext_no_call_asm` as a sort of hack around
the compiler that allowed the attributor to optimize out inline assembly
calls to PTX instructions. Quite some time ago I got rid of every inline
assembly call and replaced it with a builitin, so this can just be
deleted.
Furthermore, I use the `[[omp::assume]]` attribute directly for the
aligned barrier usage. This prints an unknown assumption warning (even
though it isn't) so I'm just silencing that for now until I fix it
later.
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Co-authored-by: Michael Kruse <github@meinersbur.de>
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