* config/mips/mips.h (PREDICATE_CODES): Add macc_msac_operand.
	* config/mips/mips.c (macc_msac_operand): New function.
	* config/mips/mips.md (*msac): Move after *macc.
	(*msac2): New.  Generalize macc-related peepholes so that they apply
	to msac too.

From-SVN: r80790