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Re: egcs/gcc new-regalloc.c ChangeLog.RA
- To: "Daniel Berlin" <dberlin at redhat dot com>
- Subject: Re: egcs/gcc new-regalloc.c ChangeLog.RA
- From: "Geert Bosch" <bosch at gnat dot com>
- Date: Thu, 01 Feb 2001 12:59:22 -0500
- Cc: "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>,"dberlin at gcc dot gnu dot org" <dberlin at gcc dot gnu dot org>
- Reply-To: "Geert Bosch" <bosch at gnat dot com>
On Thu, 1 Feb 2001 12:49:24 -0500 (EST), Daniel Berlin wrote:
I'm going to see if ignoring the allocation order on x86 makes this
problem go away. The preferences for which register to allocate in which
order seems to prefer registers that really suck all the time.
It certainly makes things better on alpha and powerpc.
I see, that makes sense indeed. In general humans do a very poor job of
such things as register scheduling, as they get bored easily and let such
things get out of date while doing interesting stuff :-)
-Geert