* config/sparc/sparc.opt (msubxc): New option.
	* doc/invoke.texi (SPARC options): Document it and tidy up.
	* doc/tm.texi.in (Condition Codes): Adjust SPARC example.
	* doc/tm.texi: Regenerate.
	* config/sparc/sparc-modes.def (CC_NOOV): Rename into...
	(CCNZ): ...this.
	(CCX_NOOV): Rename into...
	(CCXNZ): ...this.
	(CCC): New.
	(CCXC): Likewise.
	* config/sparc/predicates.m (fcc_register_operand): Simplify.
	(fcc0_register_operand): Likewise.
	(icc_register_operand): New.
	(icc_or_fcc_register_operand): Simplify.
	(nz_comparison_operator): New.
	(c_comparison_operator): Likewise.
	(noov_compare_operator): Rename into...
	(icc_comparison_operator): ...this.  Use above predicates.
	(noov_compare64_operator): Rename into...
	(v9_comparison_operator): ...this and tidy up.
	(fcc_comparison_operator): New.
	(icc_or_fcc_comparison_operator): Likewise.
	(v9_register_compare_operator): Rename info...
	(v9_register_comparison_operator): ...this.
	* config/sparc/sparc.c (TARGET_FIXED_CONDITION_CODE_REGS): Define.
	(sparc_option_override): Remove redundant VIS masks and add MASK_SUBXC
	for Niagara-7.
	(sparc_fixed_condition_code_regs): New function.
	(select_cc_mode): Remove ATTRIBUTE_UNUSED.  Adjust for CCNZ/CCXNZ
	renaming and add support for CCC/CCXC.
	(output_cbranch): Likewise.
	(sparc_print_operand): Likewise.
	(gen_v9_scc): Remove obsolete assertion.
	(emit_scc_insn): Emit RTL directly for EQ and NE.  Add direct support
	for EQ in DImode if TARGET_SUBXC.  Remove test on TARGET_VIS3 for GEU.
	(output_cbcond): Remove bogus handling of CC modes.
	(sparc_register_move_cost): Return 100 for NO_REGS.
	* config/sparc/sparc.md (W): New mode iterator.
	(length): Adjust for noov_compare64_operator renaming.
	(cmpsi_sne): New instruction.
	(cmpdi_sne): Likewise.
	(seqdi_special): Delete.
	(seqdi_special): Likewise.
	(snesi<P:mode>_special): Likewise.
	(snedi_special): Likewise.
	(snedi_special_vis3): Likewise.
	(snesi patterns): Use W iterator.
	(snedi patterns): Likewise.  Add TARGET_SUBXC patterns.
	(sltu patterns): Likewise.
	(sgeu patterns): Likewise.
	(scc splitter): Do not split GEU in DImode if TARGET_SUBXC.
	(normal_branch): Use icc_comparison_operator predicate.
	(inverted_branch): Likewise.
	(cbcond_sp32): Use comparison_operator predicate.
	(cbcond_sp64): Likewise.
	(normal_int_branch_sp64): Adjust for renaming
	(inverted_int_branch_sp64): Likewise.
	(mov<I:mode>_cc_reg_sp64): Likewise.
	(movsf_cc_reg_sp6): Likewise.
	(movdf_cc_reg_sp64): Likewise.
	(movtf_cc_reg_hq_sp64): Likewise.
	(movtf_cc_reg_sp64): Likewise.
	(mov<I:mode>_cc_v9): Use icc_or_fcc_comparison_operator predicate.
	(movsf_cc_v9): Likewise.
	(movdf_cc_v9): Likewise.
	(movtf_cc_hq_v9): Likewise.
	(movtf_cc_v9): Likewise.
	(adddi3): Call gen_adddi3_sp32.
	(adddi3_insn_sp32): Rename to...
	(adddi3_sp32): ...this.  Accept only register_operand as operand #1
	and use CCCmode for the carry.
	(addx_extend_sp32): Use CCCmode for the carry.
	(addx_extend_sp64): Delete.
	(adddi3_extend_sp32): Use CCCmode for the carry.
	(cmp_plus patterns): Use CCNZ/CCXNZ mode and add C variants.
	(subdi3): Call gen_subdi3_sp32.
	(subdi3_insn_sp32): Rename to...
	(subdi3_sp32): ...this and use CCmode for the carry.
	(subx_extend_sp32): Use CCCmode for the carry.
	(subx_extend_sp64): Delete.
	(subdi3_extend_sp32): Use CCmode for the carry.
	(cmp_minus patterns): Use CCNZ/CCXNZ mode and add C variants.
	(negdi3): Call gen_negdi3_sp32.
	(negdi3_sp32): Use CCCmode for the carry.
	(cmp_neg patterns): Use CCNZ/CCXNZ mode and add C variants.
	(cmp_nz_ashift_1): Use CCNZ mode.
	(cmp_nz_set_ashift_1): Likewise.
	(ctrapsi4): Use comparison_operator predicate.
	(ctrapdi4): Likewise.
	(trapsi_insn): Use icc_comparison_operator predicate.
	(trapdi_insn): Likewise.
	(edge8 patterns): Use CCNZmode.
	(edge16 patterns): Likewise.
	(edge32 patterns): Likewise.

From-SVN: r240971