Re: egcs: A new compiler project to merge the existing GCC forks (fwd)

Re: egcs: A new compiler project to merge the existing GCC forks (fwd)

[Joern Rennecke]

>   In message <Pine.GSO.3.96.970819004905.4653A-100000@drabble>you write:
>   > can old scheduler be the source of the problem?
> Could be -- I don't think gcc-2.7* scheduled instructions on the
> x86 machines at all.
> 
> So, one interesting test would be to run the benchmark with "-O2",
> then again with "-O2 -fno-schedule-insns -fno-schedule-insns2".
> 
> That would tell us if we need to focus on the scheduler or not.

And if you look for the best performance right now, I suggest to try
-O2 -fno-schedule-insns .  Scheduling after reload can't hurt register
allocation, and it might do some good.  OTOH, it can hurt when it
disables peepholes.  It's a bity we don't have any actual peephole
optimization pass - combine.c works before reload and is limited in the
number and kind of insns it can combine, and the peepholes used by final
don't allow re-iteration and are not designed to recognize insns sequences
with some unrelated insns in-between.

Re: egcs: A new compiler project to merge the existing GCC forks

[Dave Love]

Speaking as a g77 pentium-y person, I'd disregard these mdbnch results
for now.  I doubt detailed discussion of g77 and f2c options is
appropriate here.

[What does -O6 do, anyhow?]

Re: Hello, Contrib Back end

[Jeffrey A Law]

  In message <199708191618.MAA01052@maribor.pfnet.com>you write:
  > Hi all.
  > 
  > Thanks for creating this project, I think it's very important to merge
  > these efforts.  I'll contribute back end support for the 3-Com PalmPilot 
  > PDA, done by myself, Kresten Krab Thorup, Ian Goldberg and others, and
  > maintained by myself.  about 150k patches to gcc, small ones for binutils
  > and gdb.
Great!

Note we'll need copyright paperwork and possibly an assignment from
your employeer before we can integrate the work.  Similarly for
others that have contributed to the project.

We're trying to get the assignment/disclaimer paperwork up on the
web, so hopefully you'll be able to get things moving on that front
soon.

jeff

Hello, Contrib Back end

[D. Jeff Dionne]

Hi all.

Thanks for creating this project, I think it's very important to merge
these efforts.  I'll contribute back end support for the 3-Com PalmPilot 
PDA, done by myself, Kresten Krab Thorup, Ian Goldberg and others, and
maintained by myself.  about 150k patches to gcc, small ones for binutils
and gdb.

Cheers, Looking forward to spice2g6 on PalmPilot when FORTRAN gets
merged (I know, I'm sick :-)

D. Jeff Dionne.