re PR rtl-optimization/49154 (build fails on cris-elf in libgcc: ICE in setup_pressure_classes, at ira.c:902)

	PR rtl-optimization/49154
	* config/cris/cris.h (FIXED_REGISTERS): Include CRIS_CC0_REGNUM.
	(enum reg_class): Add SRP_REGS and MOF_SRP_REGS.
	(REG_CLASS_NAMES, REG_CLASS_CONTENTS, REGNO_REG_CLASS)
	(PREFERRED_RELOAD_CLASS, SECONDARY_RELOAD_CLASS): Adjust to fit.
	* config/cris/cris.h (cris_register_move_cost): Remove
	!TARGET_V32 code.  Tweak comments.

From-SVN: r174870