[Bug c/115023] __builtin_assoc_barrier does not talk about contracting even though it prevents it too

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115023

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's supposed to behave like parens in the Fortran standard, maybe they have
good wording.