Etienne Lorrain <[EMAIL PROTECTED]> writes: > My problem is quite simple, the PPC has few conditions registers and some are > assumed to be saved over function calls (in my test case NU_Sleep()), but the > hard real time kernel do not save those (partial flags) registers. > This behaviour is perfectly documented in gcc-4.1.1/gcc/config/rs6000 line > 709, but is there a simple solution (maybe involving recompiling the > compiler) to force re-testing values after function calls? > I do remember the i386 option -mreg-alloc="dacbSDB", but it does not seem to > be supported for PPC; the best would be a compiler option to say "full CC > register clobber by function call".
You want the -fcall-used-REG option. See the documentation. Ian
