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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