sparc.c (sparc_emit_set_const64_quick2, [...]): Fix more bugs in 64-bit constant...

sparc.c (sparc_emit_set_const64_quick2, [...]): Fix more bugs in 64-bit constant formation.

	* config/sparc/sparc.c (sparc_emit_set_const64_quick2,
	sparc_emit_set_const64_longway, const64_is_2insns,
	create_simple_focus_bits, sparc_emit_set_const64): Fix more bugs
	in 64-bit constant formation.
	* config/sparc/sparc.md (snesi_zero_extend split): Generate
	rtl for addx not subx.
	(define_insn movdi_const64_special): Make available even when
	HOST_BITS_PER_WIDE_INT is not 64.
	(movdi_lo_sum_sp64_cint, movdi_high_sp64_cint): Remove.
	(losum_di_medlow, sethm, setlo): Make op2 symbolic_operand.
	(cmp_siqi_trunc_set, cmp_diqi_trunc_set): Encapsulate both
	instances of operand 1 inside a QI subreg.
	(xordi3_sp64_dbl): Remove '%' constraint for op1.
	(one_cmpldi2_sp64): Fix output string.
	(one_cmplsi2_not_liveg0): Rewrite to remove unneeded extra
	alternative case.
	(unnamed arch64 ashift DI): Truncate shift count if greater than
	63, not 31.

From-SVN: r21733