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Re: powerpc & unaligned block moves with fp registers
- To: degger at fhm dot edu, dewar at gnat dot com
- Subject: Re: powerpc & unaligned block moves with fp registers
- From: mike stump <mrs at windriver dot com>
- Date: Sat, 10 Nov 2001 10:50:57 -0800 (PST)
- Cc: gcc at gcc dot gnu dot org, kenner at vlsi1 dot ultra dot nyu dot edu
> Date: Sat, 10 Nov 2001 18:04:27 +0100 (CET)
> From: firstname.lastname@example.org
> To: email@example.com
> Cc: firstname.lastname@example.org, email@example.com
> Pessimistic or not, we should try to avoid misaligned accesses on any
> cost since they are in a lucky case at least magnitude slower.
I reject the notion that we should at any cost. What if it costs are
10% on the SPEC2000 performance benchmark? What if we are using -Os,
and it makes code 6% larger? A good change, will be backed up by size
and time numbers from a variety of benchmarks.