mpower10
Target Undocumented Mask(POWER10) Var(rs6000_isa_flags) WarnRemoved
+mpower11
+Target Undocumented Mask(POWER11) Var(rs6000_isa_flags) Warn(Do not use %<-mpower11>)
+
mprefixed
Target Mask(PREFIXED) Var(rs6000_isa_flags)
Generate (do not generate) prefixed memory instructions.