mips.h (AVOID_CCMODE_COPIES): Update rationale for definition.

mips.h (AVOID_CCMODE_COPIES): Update rationale for definition.

gcc/
	* config/mips/mips.h (AVOID_CCMODE_COPIES): Update rationale for
	definition.
	* config/mips/mips.c (machine_function): Add next_fcc.
	(mips_output_move): Remove handling of fcc moves.
	(mips_allocate_fcc): New function.
	(mips_emit_compare, mips_expand_vcondv2sf): Use it.
	(mips_hard_regno_mode_ok_p): Restrict CCmode to ST registers.
	Remove special case for CCmode reloads.
	(mips_expand_builtin_compare_1): Use mips_allocate_fcc and treat
	the result a fixed operand.
	* config/mips/mips.md (move_type): Remove lui_movf.
	(type, length): Remove references to it.
	(movcc, reload_incc, reload_outcc): Delete.

From-SVN: r190703