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Re: big slowdown in egcs-1.1.2->gcc-2.95 on alpha
- To: Joern Rennecke <amylaar at cygnus dot co dot uk>
- Subject: Re: big slowdown in egcs-1.1.2->gcc-2.95 on alpha
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Wed, 11 Aug 1999 02:53:50 -0600
- cc: lucier at math dot purdue dot edu (Brad Lucier), gcc at gcc dot gnu dot org, gcc-bugs at gcc dot gnu dot org, staff at math dot purdue dot edu, hosking at cs dot purdue dot edu, wilker at math dot purdue dot edu, bernds at cygnus dot com
- Reply-To: law at cygnus dot com
In message <199908070139.CAA18804@phal.cygnus.co.uk>you write:
> Hmm, I wonder if the CONFLICT_P tests take a lot of time, or if the rest
> of the operations in the inner loop cost more.
>
> I wonder if this works:
>
> Thu Aug 5 22:27:15 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
>
> * global.c (prune_preferences): Move some invariants out of the
> inner loop.
This patch is fine, even if it did not make a significant difference for
the compile time slowdown in question. Thanks.
jeff