64bit aligned SSE va-args save prologues

[Jan Hubicka]

> This pattern clobbers CC and causes:
> 
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43799
> 
> This patch adds:
> 
> (clobber (reg:CC FLAGS_REG))
> 
> to those new patterns.  OK to install?
> 
> Thanks.
> 
> -- 
> H.J.
> ---
> gcc/
> 
> 2010-05-04  H.J. Lu  <hongjiu.lu@intel.com>
> 
> 	PR target/43799
> 	* config/i386/i386.md (sse_prologue_save): Add clobber CC register.
> 	(*sse_prologue_save_insn1): Likewise.
> 	(SSE prologue save splitter): Likewise.

OK, thanks!
Honza