[PATCH] [SPARC] Disable muldf3_extend for LEON/LEON3

[Sebastian Huber]

On 25/07/17 14:59, Eric Botcazou wrote:

>> Prominent LEON2 chips like the AT697E and AT697F do not properly support
>> the FSMULD instruction.  LEON3 targets using the GRFPU-lite floating
>> point unit do not support the FSMULD in hardware.  Disable this
>> instruction for for all LEON/LEON3 targets for simplicity.
> And penalize everyone else?

Yes, everyone using LEON/LEON3 will no longer benefit from the FSMULD 
after this patch. This was discussed with Gaisler. We have to make a 
trade-off between correctness, performance and the number of GCC options.

-- 
Sebastian Huber, embedded brains GmbH

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