This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
Re: RFA: patch for usage of more accurate live information for theglobal and the reload.
- From: Steven Bosscher <stevenb at suse dot de>
- To: Vladimir Makarov <vmakarov at redhat dot com>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Tue, 25 May 2004 21:42:46 +0200
- Subject: Re: RFA: patch for usage of more accurate live information for theglobal and the reload.
- Organization: SUSE Labs
> As for data flow equation solver functions from df.c, I found that gcc
> bootstrap will be ~ 1% slower with them (besides a lot of changes to the
> patch). So the modified patch still contains the original data solver.
Please no, not another ad hoc dataflow solver. We already have
too many of those.
Have you tried df.c from the lno branch as suggested earlier in
the thread? The lno branch contains a number of speed-ups to df.c.
And even if it would still be slower than your current solver,
IMHO the better approach would be to work on speeding up df.c a
little instead of adding yet more special-purpose dataflow solvers.
Gr.
Steven