Hi Richard,

This patch adds support for the -mmcu option to gcc.  Okay to commit?

Thanks,
Catherine

2012-07-18  Maciej W. Rozycki  <macro@codesourcery.com>
	    Chao-ying Fu  <fu@mips.com>

        * config/mips/mips.opt (mmcu): New option.
        * config/mips/mips.h (TARGET_CPU_CPP_BUILTINS): Define 
	_mips_mcu whenn TARGET_MCU.
        (ASM_SPEC): Pass mcu options to the assembler.
        * doc/invoke.texi (MIPS Options): Document -mmcu and -mno-mcu.