In patch #4, I mentioned that the spec 2006 benchmark 'tonto' generated different with the patches applied. I tracked it down, and it was due to the call I inserted in rs6000_debug_reg_print to update the conditional register usage seemed to set the Altivec registers VS0..VS19 to call_used instead of call_saved. Since I no longer need to set the conditional register usage with -mdebug=reg, it is simpler to just delete it. 2018-03-16 Michael Meissner * config/rs6000/rs6000.c (rs6000_debug_reg_print): Eliminate call to rs6000_conditional_register_usage. -- Michael Meissner, IBM IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA email: meissner@linux.vnet.ibm.com, phone: +1 (978) 899-4797