https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113552
nsz at gcc dot gnu.org changed:
What |Removed |Added
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CC| |nsz at gcc dot gnu.org
--- Comment #2 from nsz at gcc dot gnu.org ---
is this fortran only?
glibc release is in a week, we can still do something (or backport a fix).
the vector abi does not allow 1 lane in this case
https://github.com/ARM-software/abi-aa/blob/main/vfabia64/vfabia64.rst#L867
c annotation:
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/aarch64/fpu/bits/math-vector.h;h=04837bdcd7c0d0ce91192e09fc2d6614cae289c2;hb=HEAD
fortran annotation:
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/aarch64/fpu/finclude/math-vector-fortran.h;h=92e15f0d6a758258f5728e628bbb2422b176fa95;hb=HEAD
i think the bug can be reproduced with older glibc by adding
!GCC$ builtin (cos) attributes simd (notinbranch)
