Nathanael Nerode writes: > >Looking at config.gcc the TARGET_CPU_DEFAULT is > >overwritten by the target_alias. Looking at i386.c:1038 the cpu string > >(tuning) is set to the TARGET_DEFAULT, but the arch string remains at > >i386. the correct way to tune for i686 and use insn for i486 seems to > >be this one. do you agree? > > > >--- gcc/config/i386/i386.c~ 2003-07-09 07:45:00.000000000 +0200 > >+++ gcc/config/i386/i386.c 2003-08-09 12:58:33.000000000 +0200 > >@@ -1038,9 +1038,9 @@ > > if (!ix86_cpu_string && ix86_arch_string) > > ix86_cpu_string = ix86_arch_string; > > if (!ix86_cpu_string) > >- ix86_cpu_string = cpu_names [TARGET_CPU_DEFAULT]; > >+ ix86_cpu_string = cpu_names [TARGET_CPU_DEFAULT_pentiumpro]; > > if (!ix86_arch_string) > >- ix86_arch_string = TARGET_64BIT ? "athlon-4" : "i386"; > >+ ix86_arch_string = TARGET_64BIT ? "athlon-4" : "i486"; > > I believe this should work. A less invasive method would be nicer if > possible, but the support for it is probably missing from gcc 3.3. :-/
and it's missing from 3.4 as well.
