gcc/
	* config/mips/mips-dsp.md (mips_lbux): Turn into a define_expand,
	changing operand 1 to a pmode_register_operand.
	(mips_lhx, mips_lwx): Likewise.
	(mips_lbux_<mode>, mips_lhx_<mode>, mips_lwx_<mode>): New patterns.
	* config/mips/mips.c (mips_prepare_builtin_arg): Get the mode of
	the value from the argument expression.

From-SVN: r142872