search for: cexi

...chitecture where the physical register name/number does not completely determine its register class? BTW, the Smith Generalized Graph Coloring allocator paper describes their definition of x86 register classes and there a physical register very much can live in multiple classes (EAX is in CEX and CEXI for example). I'll probably have more to say about this as I gain experience. I may want to introduce some extra classes into the x86 target. -Dave

How do I get the TargetRegisterClass for a physical register? SSARegMap::getRegClass only works for virtual registers. -Dave

Take a look at getPhysicalRegisterRegClass( const MRegisterInfo *MRI, MVT::ValueType VT, unsigned reg) in ScheduleDAG.cpp. -- Christopher Lamb On Jun 18, 2007, at 4:52 PM, David A. Greene wrote: > How do I get the TargetRegisterClass for a physical register? > SSARegMap::getRegClass only works for virtual registers. > >