pre egcs-1.1 testing and Linux 2.1.x

[David S. Miller]

   Date: Mon, 24 Aug 1998 10:03:55 -0700 (PDT)
   From: Linus Torvalds <torvalds@transmeta.com>

   The "__builtin_constant_p()" in inline functions would have some
   things about 20 times easier to optimize for. Right now it's a very
   useful feature, but it is rather nasty syntactically because you
   have to hide it inside these macros that easily get to be fairly
   convoluted..

Richard checked this feature into egcs about 2 months ago.  It is used
by glibc for it's string.h inline optimizations.

Later,
David S. Miller
davem@dm.cobaltmicro.com