13688Re: New Makefile for bcc 5.5
- Apr 2, 2000"Ron Aaron" <ron@...> writes:
: Before you turn off the feature, benchmark the behaviour with and without it.
: I saw a 15-30% speed improvement with the feature on, as well as a size
: reduction in the executable. The benefit will be different depending on the
: processor class etc, but do be sure to test on 486, Pentium and newer
: processors -- and realize that *many* people use older CPUs.
: >the performance
: >advantage of the register calling convention will only come into play
: >with rather small functions: otherwise, the parameter will likely get
: >pushed onto the stack to free up the register in which it's sitting.
: Have you *benchmarked* this to verify what you are saying? My experience is
: different than what you indicate, but admittedly the source is fairly
: different than the version I put 'fastcall' in.
well, numbers beats conjecture, that's for sure. i don't have a 486
available, but i'll test on some slower machines and ask for help when
i have the patch ready. out of curiosity, what did you use to make
the measurements, and was this for win32 or dos?
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