126.gcc broken as of Dec15

[Jan Hubicka]

> Jan,
> 
> This patch seems to have broken 126.gcc in SPEC95.  It's a
> runtime error triggered by -O3.  The resulting 126.gcc binary
> fails to compile c-decl-s.i.
> 
> I still haven't chased the bug, but reverting this patch fixes
> the regression.  Both trunk and the cfg-branch are broken.
> 
> 
> Diego.
> 
> Fri Dec 14 21:23:54 CET 2001  Jan Hubicka  <jh@suse.cz>
> 
> 	* config.gcc: Revamp target_cpu_default2 to strings;
> 	support new x86 variants.
> 	* i386.c (override_options): Default x86_cpu_string and x86_arch_string
> 	properly; set prefetch_sse.
> 	* i386.h (x86_prefetch_sse): Declare.
> 	(TARGET_PREFETCH_SSE): New.
> 	(CPP_CPU_DEFAULT_SPEC): Define according to the new macros.
> 	(TARGET_CPU_DEFAULT_*): New.
This sounds really strange, as the prefetch code is disabled by default.
I will re-check the patch tonight.

Honza