https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87198
--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to Jakub Jelinek from comment #3) > (In reply to Uroš Bizjak from comment #2) > > I think you also need: > > > > diff --git a/gcc/common/config/i386/i386-common.c > > b/gcc/common/config/i386/i386-common.c > > index 70b3c3f2fc31..edb55e542451 100644 > > --- a/gcc/common/config/i386/i386-common.c > > +++ b/gcc/common/config/i386/i386-common.c > > @@ -181,7 +181,7 @@ along with GCC; see the file COPYING3. If not see > > #define OPTION_MASK_ISA_AVX_UNSET \ > > (OPTION_MASK_ISA_AVX | OPTION_MASK_ISA_FMA_UNSET \ > > | OPTION_MASK_ISA_FMA4_UNSET | OPTION_MASK_ISA_F16C_UNSET \ > > - | OPTION_MASK_ISA_AVX2_UNSET | OPTION_MASK_ISA_XSAVE_UNSET) > > + | OPTION_MASK_ISA_AVX2_UNSET) > > #define OPTION_MASK_ISA_FMA_UNSET OPTION_MASK_ISA_FMA > > #define OPTION_MASK_ISA_FXSR_UNSET OPTION_MASK_ISA_FXSR > > #define OPTION_MASK_ISA_XSAVE_UNSET \ > > > > so -mno-avx won't turn off -mxsave. > > Why shouldn't it turn off -mxsave? -mavx sets -mxsave too. > I mean, otherwise if one does say on -m32 do -mavx -mno-avx, then won't that > turn on -mxsave and not turn it off again? Or with target pragmas. > I believe we generally want consistency, if option ABC turns automatically > option DEF, then turning off option DEF explicitly disables option ABC. Please see recent discussion in PR87171#c4.
