Michael Meissner wrote: > Segher Boessenkool asked me on IRC to break out the fix in the last change. > This patch is just the change to set the default options if the user did not > use -mcpu=<xxx> and the compiler was not configured with --with-cpu=<xxx>. > Here are the patches.
Which GCC releases are affected by this bug? Regards, Gunther > I can submit this patch first if David desires, and then resubmit the first of > the infrastructure patches again, or commit both together. > > 2012-09-28 Michael Meissner <meiss...@linux.vnet.ibm.com> > > * config/rs6000/rs6000.c (rs6000_option_override_internal): If > -mcpu=<xxx> is not specified and the compiler is not configured > using --with-cpu=<xxx>, use the bits from the TARGET_DEFAULT to > set the initial options. > > Index: gcc/config/rs6000/rs6000.c > =================================================================== > --- gcc/config/rs6000/rs6000.c (revision 191831) > +++ gcc/config/rs6000/rs6000.c (working copy) > @@ -2461,6 +2461,11 @@ rs6000_option_override_internal (bool gl > target_flags |= (processor_target_table[cpu_index].target_enable > & set_masks); > > + /* If no -mcpu=<xxx>, inherit any default options that were cleared via > + POWERPC_MASKS. */ > + if (!have_cpu) > + target_flags |= (TARGET_DEFAULT & ~target_flags_explicit); > + > if (rs6000_tune_index >= 0) > tune_index = rs6000_tune_index; > else if (have_cpu)
