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Re: [PATCH] powerpc: fenvinline.h refactor

* Adhemerval Zanella:

> I don't think it is a good practice to re-define bultins, use it along with 
> an extra indirection instead.  Something as:
>
>   #  if !__GNUC_PREREQ(9, 0)
>   #   define __mtfsb0(__b) __asm__ __volatile__ ("mtfsb0 %0" : : "i" (__b))
>   #   define __mtfsb1(__b) __asm__ __volatile__ ("mtfsb1 %0" : : "i" (__b))
>   #  else
>   #   define __mtfsb0(__b) __builtin_mtfsb0 (__b)
>   #   define __mtfsb1(__b) __builtin_mtfsb1 (__b)
>   #  endif

I think __mtfsb0 and __mtfsb1 conflict with gcc's installed
pu_intrinsics.h header.

Thanks,
Florian
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