On 07/01/11 23:18, Bernd Schmidt wrote: >> What is the function of having both PARTIAL_INT_MODE and >> FRACTIONAL_INT_MODE? > > Not having to change all the targets using PARTIAL_INT_MODE immediately > to use the better mechanism.
Also, come to think of it, preventing the rest of the compiler from trying to use such a mode in case the target only supports some very specific operations on it. A port could choose to use PImode, defined in machmode.def (and get __int40_t support), or it could add its own private PDImode to use in specific situations only. Bernd
