C optimizer problem -- does DEC have a response?

[Edward Vielmetti]

In article <1990Aug25.231005.29864 at ircam.ircam.fr> mf at ircam.ircam.fr (Michel Fingerhut) writes:

   Several public domain large packages of software fail to run correctly
   when compiled with any of the -O options of cc (under ultrix 3.1 that I
   know of, and 4.0 according to reports in this group).  This is notably
   true of TeX, and true (according to my experience) with perl.

There are some known limitations of the mips c compiler, including
the way it deals with volatile & some non-ansi behavior.  You have
not yet convinced me that it is the optimizer which is at fault.

Perl compiled here under Ultrix 4.0, fully optimized, after I dealt
with a few small problems (like not having enough memory....)

--Ed

Edward Vielmetti, U of Michigan math dept <emv at math.lsa.umich.edu>