On Wed, Jun 18, 2014 at 10:14 AM, Segher Boessenkool <seg...@kernel.crashing.org> wrote: > A comment in rs6000.h says "cr5 is not supposed to be used". I checked > all ABIs, going as far back as PowerOpen (1994), and found no mention > of this. > > Also document cr6 is used by some vector instructions. > > Tested on powerpc64-linux, no regressions. Okay to apply? > > > Segher > > > 2014-06-18 Segher Boessenkool <seg...@kernel.crashing.org> > > gcc/ > * config/rs6000/rs6000.h (FIXED_REGISTERS): Update comment. > Remove cr5. > (REG_ALLOC_ORDER): Update comment. Move cr5 earlier.
This is okay. I have no idea why RMS assumed that cr5 is fixed. Thanks, David
