> I don't doubt it, because I've been fighting these assumptions for years.

The fight needs to be resumed/sped up, that's clearly the right thing to do.

> Then please provide a "very good idea" for how to teach gcc about true
> 20-bit types in a system with 8-bit memory and 16-bit words.

TYPE_PRECISION was designed precisely for this purpose.

-- 
Eric Botcazou

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