🚀 go-pugleaf

Version 4.00 of the tms320c30 C compiler does actually do
optimization.  That is to say that is has an optimization
switch with several levels of optimization (it didn't before).

We just got it here and at least one person I know who's used
it got very dramatic speedups over what he was getting with
the 3.00 compiler:
(these times are for the particular algorithm he is running)
version 3.00 : 48 ms 
version 4.00 : 21.3 ms (without optimization)
version 4.00 : 8.7 ms  (with all available optimization)

On the other hand, the programs I'm running on the C30 call
heavily on a library of assembler coded vector routines and I
saw no speedup.  

If you want speed, code it in assembler.  No compiler is going
to figure out that the loop you wrote to do a dot product can
be set up to use a parallel multiply/add instruction.

John Adcock                                     Lockheed Sanders Inc.
Member of Technical Staff                       144 Daniel Webster Hwy.
Signal Processing Center of Technology          Room MER24-158C
                                                Merrimack, NH.  03054  

  (usenet)      ...!uunet!rocket!adcock         phone (603) 885-2803
  (internet)    <adcock@rocket.sanders.com>	fax   (603) 885-0631
--
John Adcock                                     Lockheed Sanders Inc.
Member of Technical Staff                       144 Daniel Webster Hwy.
Signal Processing Center of Technology          Room MER24-158C
                                                Merrimack, NH.  03054  

  (usenet)      ...!uunet!rocket!adcock         phone (603) 885-2803
  (internet)    <adcock@rocket.sanders.com>	fax   (603) 885-0631