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Re: [m68k 01/13] Use pseudo opcodes for fp branch instructions
- From: Jeffrey Law <law at redhat dot com>
- To: zippel at linux-m68k dot org
- Cc: gcc-patches at gcc dot gnu dot org
- Date: Mon, 05 Feb 2007 10:06:42 -0700
- Subject: Re: [m68k 01/13] Use pseudo opcodes for fp branch instructions
- References: <20070130112615.782382000@linux-m68k.org> <20070130114606.053161000@linux-m68k.org>
- Reply-to: law at redhat dot com
On Tue, 2007-01-30 at 12:26 +0100, zippel@linux-m68k.org wrote:
> Hi,
>
> gcc has problems to generate conditional fp jumps in very large
> functions, as it always uses the 16bit variant. The easy solution is to
> use the pseudo opcodes gas provides as we do with normal jump opcodes
> and leave the work to gas.
> This removes also many MOTOROLA tests, as the used jump opcodes weren't
> really Motorola ops, but all of them are gas pseudo opcodes and this
> uses now the officially documented variant.
>
>
> 2007-01-30 Roman Zippel <zippel@linux-m68k.org>
>
> * config/m68k/m68k.md: replace all fbcc with fjcc
The obvious concern here is whether or not all the other m68k
assemblers accept fjcc. Can you comment on this?
Jeff