https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100152
Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
Summary|[10.3, 11, 12 Regression] |[10.3, 11, 12 Regression]
|[Darwin, X86] used |used caller-saved register
|caller-saved register not |not preserved across a
|preserved across a call. |call.
--- Comment #27 from Iain Sandoe <iains at gcc dot gnu.org> ---
this is caused by, or exposed by,
r10-9246-geddcb627ccfbd97e025cf366cc3f3bad76211785
since that's a change in tree optimisation, the problem might not be confined
to Darwin, but I wasn't able to get the preprocessed source attached here to
produce wrong code on Linux.
For x86_64, the Darwin ABI is supposed to be same as Linux - and as noted,
there is not so much Darwin-specific back end code (but, of course, there is
some).
