i386.c (override_options): Remove ppro, pentium2, and p2 as aliases.
* i386.c (override_options): Remove ppro, pentium2, and p2 as aliases.
Default ix86_arch to PROCESSOR_I386.
* i386.h (CC1_CPU_SPEC): Don't add -march=foo. Remove -mno-foo.
(CPP_486_SPEC, CPP_586_SPEC, CPP_686_SPEC): Delete.
(CPP_CPU_DEFAULT_SPEC): Define to __tune_foo__.
(CC1_CPU_SPEC): Make -march=foo define __foo__, and provide
__tune_foo__ if no -mcpu. Make -mcpu=bar define __tune_bar__.
(EXTRA_SPECS): Remove deleted specs.