mfinegan@uceng.UC.EDU (michael k finegan) (10/16/89)
Could anyone using a 32 bit 'C' compiler on a PC (i.e. 386) give
some recommendations? Are they really twice the MIPS of 16 bit compilers?
What about MFLOPS - any difference ? Which brand is most 'portable'? What
about their requirement of/interface to DOS EXTENDERS ? Comparisons to
SCO Xenix, or other 386 ~Unix 'C' compilers / output ? Interfaces to operating
system (DOS or other), etc., etc.
This topic hasn't seen much discussion here, or in other groups. Is it
because no one is using the 32 bit compilers on PC AT machines?
Thanks for any info.,
Michael Finegan
mfinegan@uceng.uc.edudavidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr) (10/19/89)
In answer to part of your question, running under xenix 386, typical programs run 40-100% longer using the 286 instructions than the 386. Same machine, o/s and all. Phil Katz' ZIP program uses a 386 is present, and he claims something like 40% too. I have seen a few numbers which would indicate that the NDP C is slightly faster than Xenix C, but I haven't retested with the newest version of Xenix C, which does produce better code (and has the ANSI extensions, too). -- bill davidsen (davidsen@crdos1.crd.GE.COM -or- uunet!crdgw1!crdos1!davidsen) "The world is filled with fools. They blindly follow their so-called 'reason' in the face of the church and common sense. Any fool can see that the world is flat!" - anon