-extern struct rtx_def *rs6000_got_register PARAMS ((rtx));
-extern struct rtx_def *find_addr_reg PARAMS ((rtx));
-extern int any_operand PARAMS ((rtx, enum machine_mode));
-extern int short_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int u_short_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int non_short_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int exact_log2_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int gpc_reg_operand PARAMS ((rtx, enum machine_mode));
-extern int cc_reg_operand PARAMS ((rtx, enum machine_mode));
-extern int cc_reg_not_cr0_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_short_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_neg_short_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_aligned_short_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_u_short_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_arith_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_add_cint64_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_sub_cint64_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_logical_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int got_operand PARAMS ((rtx, enum machine_mode));
-extern int got_no_const_operand PARAMS ((rtx, enum machine_mode));
-extern int num_insns_constant PARAMS ((rtx, enum machine_mode));
-extern int easy_fp_constant PARAMS ((rtx, enum machine_mode));
-extern int zero_fp_constant PARAMS ((rtx, enum machine_mode));
-extern int zero_constant PARAMS ((rtx, enum machine_mode));
-extern int volatile_mem_operand PARAMS ((rtx, enum machine_mode));
-extern int offsettable_mem_operand PARAMS ((rtx, enum machine_mode));
-extern int mem_or_easy_const_operand PARAMS ((rtx, enum machine_mode));
-extern int add_operand PARAMS ((rtx, enum machine_mode));
-extern int non_add_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int non_logical_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int logical_operand PARAMS ((rtx, enum machine_mode));
-extern int mask_operand PARAMS ((rtx, enum machine_mode));
-extern int mask64_operand PARAMS ((rtx, enum machine_mode));
-extern int and64_operand PARAMS ((rtx, enum machine_mode));
-extern int and_operand PARAMS ((rtx, enum machine_mode));
-extern int count_register_operand PARAMS ((rtx, enum machine_mode));
-extern int xer_operand PARAMS ((rtx, enum machine_mode));
-extern int reg_or_mem_operand PARAMS ((rtx, enum machine_mode));
-extern int lwa_operand PARAMS ((rtx, enum machine_mode));
-extern int call_operand PARAMS ((rtx, enum machine_mode));
-extern int current_file_function_operand PARAMS ((rtx, enum machine_mode));
-extern int input_operand PARAMS ((rtx, enum machine_mode));
-extern int small_data_operand PARAMS ((rtx, enum machine_mode));
-extern int s8bit_cint_operand PARAMS ((rtx, enum machine_mode));
-extern int constant_pool_expr_p PARAMS ((rtx));
-extern int toc_relative_expr_p PARAMS ((rtx));
-extern int expand_block_move PARAMS ((rtx[]));
-extern int load_multiple_operation PARAMS ((rtx, enum machine_mode));
-extern const char * rs6000_output_load_multiple PARAMS ((rtx[]));
-extern int store_multiple_operation PARAMS ((rtx, enum machine_mode));
-extern int branch_comparison_operator PARAMS ((rtx, enum machine_mode));
-extern int branch_positive_comparison_operator
- PARAMS ((rtx, enum machine_mode));
-extern int scc_comparison_operator PARAMS ((rtx, enum machine_mode));
-extern int trap_comparison_operator PARAMS ((rtx, enum machine_mode));
-extern int boolean_operator PARAMS ((rtx, enum machine_mode));
-extern int boolean_or_operator PARAMS ((rtx, enum machine_mode));
-extern int min_max_operator PARAMS ((rtx, enum machine_mode));
-extern int includes_lshift_p PARAMS ((rtx, rtx));
-extern int includes_rshift_p PARAMS ((rtx, rtx));
-extern int includes_rldic_lshift_p PARAMS ((rtx, rtx));
-extern int includes_rldicr_lshift_p PARAMS ((rtx, rtx));
-extern int registers_ok_for_quad_peep PARAMS ((rtx, rtx));
-extern int addrs_ok_for_quad_peep PARAMS ((rtx, rtx));
-extern enum reg_class secondary_reload_class PARAMS ((enum reg_class,
- enum machine_mode, rtx));
-extern int ccr_bit PARAMS ((rtx, int));
-extern void print_operand PARAMS ((FILE *, rtx, int));
-extern void print_operand_address PARAMS ((FILE *, rtx));
-extern enum rtx_code rs6000_reverse_condition PARAMS ((enum machine_mode,
- enum rtx_code));
-extern void rs6000_emit_sCOND PARAMS ((enum rtx_code, rtx));
-extern void rs6000_emit_cbranch PARAMS ((enum rtx_code, rtx));
-extern char * output_cbranch PARAMS ((rtx, const char *, int, rtx));
-extern rtx rs6000_emit_set_const PARAMS ((rtx, enum machine_mode, rtx, int));
-extern int rs6000_emit_cmove PARAMS ((rtx, rtx, rtx, rtx));
-extern void rs6000_emit_minmax PARAMS ((rtx, enum rtx_code, rtx, rtx));
-extern void output_toc PARAMS ((FILE *, rtx, int, enum machine_mode));
-extern void rs6000_initialize_trampoline PARAMS ((rtx, rtx, rtx));
-extern struct rtx_def *rs6000_longcall_ref PARAMS ((rtx));
-extern void rs6000_fatal_bad_address PARAMS ((rtx));
-extern int stmw_operation PARAMS ((rtx, enum machine_mode));
-extern int mtcrf_operation PARAMS ((rtx, enum machine_mode));
-extern int lmw_operation PARAMS ((rtx, enum machine_mode));
-extern struct rtx_def *create_TOC_reference PARAMS ((rtx));
-extern void rs6000_emit_eh_toc_restore PARAMS ((rtx));
-extern void rs6000_emit_move PARAMS ((rtx, rtx, enum machine_mode));
-extern rtx rs6000_legitimize_address PARAMS ((rtx, rtx, enum machine_mode));
-extern rtx rs6000_legitimize_reload_address PARAMS ((rtx, enum machine_mode,
- int, int, int, int *));
-extern int rs6000_legitimate_address PARAMS ((enum machine_mode, rtx, int));
-extern void rs6000_select_rtx_section PARAMS ((enum machine_mode, rtx));
-
-extern rtx rs6000_return_addr PARAMS ((int, rtx));
-extern void rs6000_output_symbol_ref PARAMS ((FILE*, rtx));
-
-extern rtx rs6000_machopic_legitimize_pic_address PARAMS ((rtx orig, enum machine_mode mode, rtx reg));
+extern bool easy_altivec_constant (rtx, enum machine_mode);
+extern HOST_WIDE_INT const_vector_elt_as_int (rtx, unsigned int);
+extern bool macho_lo_sum_memory_operand (rtx, enum machine_mode);
+extern int num_insns_constant (rtx, enum machine_mode);
+extern int num_insns_constant_wide (HOST_WIDE_INT);
+extern int small_data_operand (rtx, enum machine_mode);
+extern bool toc_relative_expr_p (rtx);
+extern bool invalid_e500_subreg (rtx, enum machine_mode);
+extern void validate_condition_mode (enum rtx_code, enum machine_mode);
+extern bool legitimate_constant_pool_address_p (rtx);
+extern bool legitimate_indirect_address_p (rtx, int);
+extern bool legitimate_indexed_address_p (rtx, int);
+extern bool avoiding_indexed_address_p (enum machine_mode);
+
+extern rtx rs6000_got_register (rtx);
+extern rtx find_addr_reg (rtx);
+extern rtx gen_easy_altivec_constant (rtx);
+extern const char *output_vec_const_move (rtx *);
+extern void rs6000_expand_vector_init (rtx, rtx);
+extern void paired_expand_vector_init (rtx, rtx);
+extern void rs6000_expand_vector_set (rtx, rtx, int);
+extern void rs6000_expand_vector_extract (rtx, rtx, int);
+extern void build_mask64_2_operands (rtx, rtx *);
+extern int expand_block_clear (rtx[]);
+extern int expand_block_move (rtx[]);
+extern const char * rs6000_output_load_multiple (rtx[]);
+extern int includes_lshift_p (rtx, rtx);
+extern int includes_rshift_p (rtx, rtx);
+extern int includes_rldic_lshift_p (rtx, rtx);
+extern int includes_rldicr_lshift_p (rtx, rtx);
+extern int insvdi_rshift_rlwimi_p (rtx, rtx, rtx);
+extern int registers_ok_for_quad_peep (rtx, rtx);
+extern int mems_ok_for_quad_peep (rtx, rtx);
+extern bool gpr_or_gpr_p (rtx, rtx);
+extern enum reg_class rs6000_secondary_reload_class (enum reg_class,
+ enum machine_mode, rtx);
+
+extern int paired_emit_vector_cond_expr (rtx, rtx, rtx,
+ rtx, rtx, rtx);
+extern void paired_expand_vector_move (rtx operands[]);