nsz Git - libfirm/blob - ir/be/sparc/sparc_lower64.c

   1 /*
   2  * Copyright (C) 1995-2010 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief    Sparc 64bit lowering
  23  * @author   Matthias Braun
  24  */
  25 #include "config.h"
  26
  27 #include "bearch_sparc_t.h"
  28 #include "gen_sparc_new_nodes.h"
  29 #include "lower_dw.h"
  30 #include "ircons_t.h"
  31 #include "util.h"
  32
  33 static void lower64_add(ir_node *node, ir_mode *mode)
  34 {
  35         dbg_info *dbgi       = get_irn_dbg_info(node);
  36         ir_node  *block      = get_nodes_block(node);
  37         ir_node  *left       = get_Add_left(node);
  38         ir_node  *right      = get_Add_right(node);
  39         ir_node  *left_low   = get_lowered_low(left);
  40         ir_node  *left_high  = get_lowered_high(left);
  41         ir_node  *right_low  = get_lowered_low(right);
  42         ir_node  *right_high = get_lowered_high(right);
  43         ir_node  *addcc      = new_bd_sparc_AddCC_t(dbgi, block, left_low,
  44                                                     right_low);
  45         ir_node  *res_low    = new_r_Proj(addcc, mode_Iu, pn_sparc_AddCC_t_res);
  46         ir_node  *res_flags  = new_r_Proj(addcc, mode_ANY, pn_sparc_AddCC_t_flags);
  47         ir_node  *addx       = new_bd_sparc_AddX_t(dbgi, block, left_high,
  48                                                    right_high, res_flags, mode);
  49         ir_set_dw_lowered(node, res_low, addx);
  50 }
  51
  52 static void lower64_sub(ir_node *node, ir_mode *mode)
  53 {
  54         dbg_info *dbgi       = get_irn_dbg_info(node);
  55         ir_node  *block      = get_nodes_block(node);
  56         ir_node  *left       = get_Sub_left(node);
  57         ir_node  *right      = get_Sub_right(node);
  58         ir_node  *left_low   = get_lowered_low(left);
  59         ir_node  *left_high  = get_lowered_high(left);
  60         ir_node  *right_low  = get_lowered_low(right);
  61         ir_node  *right_high = get_lowered_high(right);
  62         ir_node  *subcc      = new_bd_sparc_SubCC_t(dbgi, block, left_low,
  63                                                     right_low);
  64         ir_node  *res_low    = new_r_Proj(subcc, mode_Iu, pn_sparc_SubCC_t_res);
  65         ir_node  *res_flags  = new_r_Proj(subcc, mode_ANY, pn_sparc_SubCC_t_flags);
  66         ir_node  *subx       = new_bd_sparc_SubX_t(dbgi, block, left_high,
  67                                                    right_high, res_flags, mode);
  68         ir_set_dw_lowered(node, res_low, subx);
  69 }
  70
  71 static void lower64_minus(ir_node *node, ir_mode *mode)
  72 {
  73         dbg_info *dbgi         = get_irn_dbg_info(node);
  74         ir_graph *irg          = get_irn_irg(node);
  75         ir_node  *block        = get_nodes_block(node);
  76         ir_node  *op           = get_Minus_op(node);
  77         ir_node  *right_low    = get_lowered_low(op);
  78         ir_node  *right_high   = get_lowered_high(op);
  79         ir_mode  *low_unsigned = get_irn_mode(right_low);
  80         ir_node  *left_low     = new_r_Const(irg, get_mode_null(low_unsigned));
  81         ir_node  *left_high    = new_r_Const(irg, get_mode_null(mode));
  82         ir_node  *subcc        = new_bd_sparc_SubCC_t(dbgi, block, left_low,
  83                                                       right_low);
  84         ir_node  *res_low      = new_r_Proj(subcc, mode_Iu, pn_sparc_SubCC_t_res);
  85         ir_node  *res_flags    = new_r_Proj(subcc, mode_ANY, pn_sparc_SubCC_t_flags);
  86         ir_node  *subx         = new_bd_sparc_SubX_t(dbgi, block, left_high,
  87                                                      right_high, res_flags, mode);
  88         ir_set_dw_lowered(node, res_low, subx);
  89 }
  90
  91 static ir_entity *create_64_intrinsic_fkt(ir_type *method, const ir_op *op,
  92                                           const ir_mode *imode,
  93                                           const ir_mode *omode, void *context)
  94 {
  95         ir_type    *glob = get_glob_type();
  96         const char *name;
  97         ident      *id;
  98         ir_entity  *result;
  99         (void) context;
 100         (void) omode;
 101
 102         if (op == op_Mul) {
 103                 name = "__muldi3";
 104         } else if (op == op_Div) {
 105                 name = mode_is_signed(imode) ? "__divdi3" : "__udivdi3";
 106         } else if (op == op_Mod) {
 107                 name = mode_is_signed(imode) ? "__moddi3" : "__umoddi3";
 108         } else {
 109                 panic("Can't lower unexpected 64bit operation %s", get_op_name(op));
 110         }
 111         id     = new_id_from_str(name);
 112         result = new_entity(glob, id, method);
 113         set_entity_ld_ident(result, id);
 114         set_entity_visibility(result, ir_visibility_external);
 115         return result;
 116 }
 117
 118 void sparc_lower_64bit(void)
 119 {
 120         lwrdw_param_t lower_dw_params = {
 121                 0,  /* big endian */
 122                 64, /* doubleword size */
 123                 create_64_intrinsic_fkt,
 124                 NULL
 125         };
 126
 127         /* make sure opcodes are initialized */
 128         sparc_create_opcodes(&sparc_irn_ops);
 129
 130         ir_prepare_dw_lowering(&lower_dw_params);
 131         ir_register_dw_lower_function(op_Add,   lower64_add);
 132         ir_register_dw_lower_function(op_Minus, lower64_minus);
 133         ir_register_dw_lower_function(op_Sub,   lower64_sub);
 134         ir_lower_dw_ops();
 135 }