Re: cpplib: expression parser patch 2

[Neil Booth <NeilB at earthling dot net>]

Gerald Pfeifer wrote:-

> I think the better approach would be to fix GCC instead of playing
> coding tricks.

True, but I think here we know more than the compiler can - we know
that each argument is not an int but a boolean.  I suspect if we knew
only what the compiler can assume then it is probably optimal.

> Indeed, is the code there really that performance-/size-critical to
> warrant that level of analysis/hackery? (Compared to the O(n^2) stuff
> Mark Mitchell has been attacking recently, for example?)

To me, there's little difference between | and || in clarity, but
every reduction in code size and increase in code speed helps.

Neil.