predicates.md (const_float_1_operand): Fix match_code test.

predicates.md (const_float_1_operand): Fix match_code test.

	* config/v850/predicates.md (const_float_1_operand): Fix match_code
	test.
	(const_float_0_operand): Remove unused predicate.
	* config/v850/v850.md (define_constants): Remove UNSPEC_LOOP.
	(define_c_enum unspec): Add LOOP, RCP and RSQRT constants.
	(recipsf2): New expander.  Original pattern now called
	(recipsf2_insn).
	(recipdf2, recipdf2_insn): Similarly.
	(rsqrtsf2, rsqrtsf2_insn): Similarly
	(rsqrtdf2, rsqrtdf2_insn): Similarly

From-SVN: r262123