[libcxx-commits] [libcxx] [libc++] Don't add #pragma clang attribute with GCC (PR #206989)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne approved this pull request.

LGTM, I confirm what @philnik777 said above.

Regarding ABI tags, since we are indeed using `always_inline` on GCC (for now), they don't matter. Once we drop `always_inline` on GCC, we'll lose the per-TU insulation but I'm OK with that tradeoff (FWIW libstdc++ itself doesn't attempt to provide per-TU insulation).

https://github.com/llvm/llvm-project/pull/206989