[mips patch RFA] add -mfix-sb1 to work around SB-1 CPU errata.

[Eric Christopher]

> --
> 2003-08-22  Chris Demetriou  <cgd@broadcom.com>
> 
> 	* config/mips/mips.h (MASK_FIX_SB1, TARGET_FIX_SB1): New defines.
> 	(TARGET_SWITCHES): Add -mfix-sb1 and -mno-fix-sb1.
> 	* config/mips/mips.md (divdf3, divsf3, sqrtdf2, sqrtsf2): Work
> 	around SB-1 errata if TARGET_FIX_SB1 is set.
> 	(recip.d insn, recip.s insn, rsqrt.d insn, rsqrt.s insn): Likewise.
> 	* doc/invoke.texi: Document MIPS -mfix-sb1 and -mno-fix-sb1.

OK.

-eric

-- 
Eric Christopher <echristo@redhat.com>