https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230888
--- Comment #41 from commit-h...@freebsd.org --- A commit in branch releng/11.4 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=7b67d47c70cca47f65fbbc9d8607b7516c2a82ee commit 7b67d47c70cca47f65fbbc9d8607b7516c2a82ee Author: Dimitry Andric <d...@freebsd.org> AuthorDate: 2020-09-12 16:33:05 +0000 Commit: Ed Maste <ema...@freebsd.org> CommitDate: 2021-01-29 00:07:08 +0000 MFC r364753: Add atomic and bswap functions to libcompiler_rt There have been several mentions on our mailing lists about missing atomic functions in our system libraries (e.g. __atomic_load_8 and friends), and recently I saw __bswapdi2 and __bswapsi2 mentioned too. To address this, add implementations for the functions from compiler-rt to the system compiler support libraries, e.g. libcompiler_rt.a and and libgcc_s.so. This also needs a small fixup in compiler-rt's atomic.c, to ensure that 32-bit mips can build correctly. Bump __FreeBSD_version to make it easier for port maintainers to detect when these functions were added. Differential Revision: https://reviews.freebsd.org/D26159 MFC r364782: After r364753, there should be no need to suppress -Watomic-alignment warnings anymore for compiler-rt's atomic.c. This occurred because the IS_LOCK_FREE_8 macro was not correctly defined to 0 for mips, and this caused the compiler to emit a runtime call to __atomic_is_lock_free(), and that triggers the warning. MFC r365509: Follow-up r364753 by enabling compiler-rt's atomic implementation only for clang, as it uses clang specific builtins, and does not compile correctly with gcc. Note that gcc packages usually come with their own libatomic, providing these primitives. MFC r365588: Follow-up r364753 by only using arm's stdatomic.c implementation, as it already covers the functions in compiler-rt's atomic.c, leading to conflicts when linking. PR: 230888 (cherry picked from commit 7c73d99e6cf7b69630856acac4a2ab82f5c9f218) Approved by: so .../llvm-project/compiler-rt/lib/builtins/atomic.c | 4 ++-- lib/libcompiler_rt/Makefile.inc | 25 +++++++++------------- 2 files changed, 12 insertions(+), 17 deletions(-) -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ freebsd-toolchain@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"
