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Re: powerpc & unaligned block moves with fp registers
- To: dalej at apple dot com
- Subject: Re: powerpc & unaligned block moves with fp registers
- From: DJ Delorie <dj at redhat dot com>
- Date: Thu, 1 Nov 2001 18:23:04 -0500
- CC: dje at watson dot ibm dot com, dalej at apple dot com, gcc at gcc dot gnu dot org
- References: <E37E19FD-CF17-11D5-AEDD-003065C86F94@apple.com>
> Yes. I'd recommend using 32 rather than 64 as the alignment cutoff
> in DJ Delorie's patch; a 32-bit-aligned lfd/stfd does not trap.[*]
>
> [*] at least, on the 750/7400/7450; I haven't gone back farther.
For this patch, it's important to know what is guaranteed across all
chips, else we'd have to figure out a way to make it configurable.
Perhaps we could make it a -m option, and default it according to
-mcpu?