[Bug target/95129] aarch64: make outline-atomics work on non-gnu targets
albert at tugraz dot at via Gcc-bugs <[email protected]>
| Newsgroups | gmane.comp.gcc.bugs |
|---|---|
| Message-ID | <[email protected]/bugzilla/> |
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95129
Christopher Albert <albert at tugraz dot at> changed:
What |Removed |Added
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CC| |jvdelisle at gcc dot gnu.org
--- Comment #3 from Christopher Albert <albert at tugraz dot at> ---
Open for review, comments welcome:
https://github.com/lazy-fortran/gcc/pull/39
libgcc/config.host adds t-lse for aarch64*-*-netbsd*, so the
out-of-line helpers are built, and lse-init.c gains a NetBSD detection
path: it reads each CPU's ID_AA64ISAR0_EL1 via the
machdep.cpuN.cpu_id sysctl and enables LSE only if every attached CPU
supports it.
Verified natively on NetBSD 10.1/AArch64: all-target-libgcc builds,
the helpers link and run, and the detection probe reports correctly.
Complements the PR95128 default (fork PR 35): with both, helpers are
available and -moutline-atomics works, while the conservative NetBSD
default stays off.