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Re: [PATCH RFC] add generic expansion for MULT_HIGHPART_EXP


On Mon, 20 Aug 2018, Richard Biener wrote:

> So - how difficult is it to fix BRIG to not use MULT_HIGHPART_EXPR if
> not supported?

Pekka, can you comment? I think you have fallback paths for vector types
only at the moment?

Does BRIG have mult-highpart for 64-bit integers? On 32-bit targets we
won't be able to easily expand them (but on 64-bit targets it is fine).


For scalar types I think we should prefer to implement a generic expansion
rather than have the frontend query the backend. For vector types I am not
sure.

Alexander


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