On Tue, Feb 20, 2024 at 06:35:34PM +0800, Kewen.Lin wrote: > on 2024/2/8 03:58, Michael Meissner wrote: > $ grep -r "define PROCESSOR_DEFAULT" gcc/config/rs6000/ > gcc/config/rs6000/aix71.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER7 > gcc/config/rs6000/aix71.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7 > gcc/config/rs6000/aix72.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER7 > gcc/config/rs6000/aix72.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7 > gcc/config/rs6000/aix73.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER8 > gcc/config/rs6000/aix73.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 > gcc/config/rs6000/darwin.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC7400 > gcc/config/rs6000/darwin.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER4 > gcc/config/rs6000/freebsd64.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC7450 > gcc/config/rs6000/freebsd64.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 > gcc/config/rs6000/linux64.h:#define PROCESSOR_DEFAULT PROCESSOR_POWER7 > gcc/config/rs6000/linux64.h:#define PROCESSOR_DEFAULT64 PROCESSOR_POWER8 > gcc/config/rs6000/rs6000.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC603 > gcc/config/rs6000/rs6000.h:#define PROCESSOR_DEFAULT64 PROCESSOR_RS64A > gcc/config/rs6000/vxworks.h:#define PROCESSOR_DEFAULT PROCESSOR_PPC604 > > , and they are unlikely to be updated later, no?
In most cases did would be an ABI change. Almost never an acceptable thing to do. Segher
