libcxx: add comment explaining why umtx is only used for 64bits
(cherry picked from commit 4c4a29267cbdd05471322e03bfd5eff8eb68e750)
Description
Description
Details
Details
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kib Authored on Jan 24 2023, 3:36 PM - Parents
- rGa140a745c4da: libcxx: use __SIZEOF_LONG__ == 8 instead of __LP64__
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