On Mon, 2 Jan 2017, Jakub Jelinek wrote: > On Mon, Jan 02, 2017 at 09:49:55PM +0300, Alexander Monakov wrote: > > On Mon, 2 Jan 2017, Jakub Jelinek wrote: > > > If the host has long double the same as double, sure, PTX can use its > > > native > > > DFmode even for long double. But otherwise, the storage must be > > > transferable between accelerator and host. > > > > Hm, sorry, the 'must' is not obvious to me: is it known that the OpenMP ARB > > would find only this implementation behavior acceptable? > > long double is not non-mappable type in the spec, so it is supposed to work. > The implementation may choose not to offload whenever it sees long > double/__float128/_Float128/_Float128x etc. > > > Apart from floating-point types, are there other situations where modes > > carry > > information not deducible from the rest of the tree node? > > Dunno about fixed types, partial ints etc., but it is mostly floating point > types, sure.
Mostly floats I guess. But just to say it would be very nice to have enough information in the trees so layout_type can re-construct the mode. It already does for 99% of the types... (just grep for SET_TYPE_MODE). Richard.
