On Thu, 21 Apr 2016, Ralf Baechle wrote: > > I don't think it makes sense as the compiler won't support MIPSr6 code > > anyway, so first it'll bail out on `-march=mips32r6', and if we go even > > further and disable that too, then GAS will probably break somewhere on > > inline asm and GCC will produce code which does not make sense otherwise. > > GCC 5.2.0 claims to support mips32r6 and mips64r6. It's just the option > -mcompact-branches which seem to have been added later only.
Ah, I see -- I didn't track the timeline of support for this compiler's option and I took it from an earlier response that the compiler does not support R6 at all. In that case however it looks to me like these `-mcompact-branches=' options (all the three we support) need to be wrapped into `$(call cc-option,...)'. They do not affect any functionality and they are an optimisation choice only anyway (and therefore I wonder why they've been placed in arch/mips/Kconfig.debug rather than arch/mips/Kconfig). Maciej
