On 08/06/14 02:27, Richard Biener wrote:
which we may restrict better with checking whether the pointer
uses a partial integer mode. Not sure how PSImode -> SImode
"extends" on RTL?
Well, at least on the mn102, I defined both a zero and sign extension
for PSI -> SI. So whichever one the generic parts of the compiler
needed, the backend provided.
As to what bits are modified, that's target dependent as the precise
size of the partial modes is target dependent. That's one of the things
that would be largely made irrelevant by DJ's proposed changes. Instead
of using PSImode, we'd be able to define modes of precisely the number
of bits one of these targets needs.
Jeff
