ecgs (which we are in the rpocess of moving to), has at least
	MULL, ULW, DIVW, & LSHIFTRT cost decisions based on CPU type.

	There are also quite a few decisions made in m68k.md based on
	TARGET_680[46]0. While most of these are related to floating
	point, quite a few are not.

	However, it does appear that it treats a 68030 exactly as a 68020,
	so there is no benefit at all in compiling -m68030 vs -m68020
	(Nuking my original suggestion and making this irrelevant to
	port-sun :).

	This does leave open the option of compiling kernels/userland with
	680[46]0... (but it wont affect any sun3 or sun3x users :)
	
		David/absolute

             -=-  "Promise carved in stone, deeper than the sea"  -=-

On Tue, 5 May 1998, Toshiyasu Morita wrote:

> If you look at the m68k machine description then you will see that the only 
> difference between 68020/68030/68040/68060 is gcc avoids slow floating-point 
> instructions on the 68040 and 68060 which are implemented as software traps.
> 
> Please explain why the kernel should be optimized for fast floating-point 
> computations.
> 
> Toshi
>