"Rupert Wood" <me@xxxxxxxxx> writes: > Daniel Berlin wrote: > > > i'm not sure what nop does > > Does it really output a nop to the instruction stream? > > It appears to just throw its arguments away > > http://msdn.microsoft.com/library/en-us/vclang/html/vcref__noop.asp > > The __noop intrinsic specifies that a function should be ignored > and the argument list unevaluated. It is intended for use in > global debug functions that take a variable number of arguments. > > I'm not a preprocessor guru (or a GCC-builtins guru) so I don't know what to > suggest :-/ Sounds like one could just do #define __noop(...) Looking at the other functions from that link, gcc doesn't have anything exactly like __assume. gcc has __builtin_expect, but that is not the same. __assume is stronger than __builtin_expect. _ReturnAddress() is the same as gcc's __builtin_return_address(0). Ian
