Also, using functions gives better typing in terms of documentation, so it
seems reasonable to continue to support that.
For optimality I meant things like:
unsigned char inb (unsigned short int __port)
{
unsigned char _v;
if (__builtin_constant_p(__port) && __port < 256)
__asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"N" (__port));
else
__asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"d" (__port));
return _v;
}
http://reviews.llvm.org/D7014
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