[Bug other/123841] [16 regression] Failed bootstrap (Error: invalid operands (.text and .text.unlikely sections) for `-') since r16-7073

[iains at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123841

--- Comment #26 from Iain Sandoe <iains at gcc dot gnu.org> ---
the attached patch restores bootstrap on i686-darwin9 and 17; I also built
x86_64-darwin17 with the patch applied - and that was OK.

It might be possible to simplify further - e.g. merging cases as you mention. 
However, I'd rather leave that until later.

Please note that, although the only binutils assembler is indeed out of date, I
do have a wrapper 'llas' around the LLVM backend that provides a "cctools
command line compatible" assembler supporting more modern features that works
for all currently tested darwin systems.