nsz Git - libfirm/blob - ir/be/beutil.c

   1 #ifdef HAVE_CONFIG_H
   2 #include "config.h"
   3 #endif
   4
   5 #include <stdio.h>
   6
   7 #include "pset.h"
   8
   9 #include "irgraph.h"
  10 #include "irgwalk.h"
  11 #include "irdump_t.h"
  12 #include "irdom_t.h"
  13 #include "ircons.h"
  14 #include "iropt.h"
  15 #include "irgopt.h"
  16 #include "irprintf.h"
  17
  18 #include "beutil.h"
  19 #include "besched_t.h"
  20 #include "bearch.h"
  21
  22 pset *be_empty_set(void)
  23 {
  24         static pset *empty_set = NULL;
  25
  26         if(!empty_set)
  27                 empty_set = pset_new_ptr_default();
  28
  29         return empty_set;
  30 }
  31
  32 struct dump_env {
  33   FILE *f;
  34   arch_env_t *env;
  35 };
  36
  37 static void dump_allocated_block(ir_node *block, void *data)
  38 {
  39         int i, n;
  40         const ir_node *irn;
  41         struct dump_env *dump_env = data;
  42         FILE *f = dump_env->f;
  43         arch_env_t *env = dump_env->env;
  44
  45         ir_fprintf(f, "node:{title:\"b%N\"\nlabel:\"", block);
  46         sched_foreach(block, irn) {
  47                 const char *prefix = "";
  48
  49                 const arch_register_t *reg = arch_get_irn_register(env, irn);
  50
  51                 ir_fprintf(f, "\n");
  52                 if(reg)
  53                         ir_fprintf(f, "%s = ", arch_register_get_name(reg));
  54
  55                 ir_fprintf(f, "%n(", irn);
  56
  57                 if(block != get_irg_start_block(get_irn_irg(block))) {
  58                         for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
  59                                 ir_node *op = get_irn_n(irn, i);
  60                                 if(arch_is_register_operand(dump_env->env, op, -1)) {
  61                                         ir_fprintf(f, "%s%s", prefix,
  62                                                 arch_register_get_name(arch_get_irn_register(env, op)));
  63                                         prefix = ", ";
  64                                 }
  65                         }
  66                 }
  67
  68                 ir_fprintf(f, ")");
  69         }
  70         ir_fprintf(f, "\"}\n");
  71
  72         if(get_irg_start_block(get_irn_irg(block)) != block) {
  73                 for(i = 0, n = get_irn_arity(block); i < n; ++i) {
  74                         ir_node *pred_bl = get_nodes_block(get_irn_n(block, i));
  75                         ir_fprintf(f, "edge:{sourcename:\"b%N\" targetname:\"b%N\"}\n", block, pred_bl);
  76                 }
  77         }
  78 }
  79
  80 void dump_allocated_irg(arch_env_t *arch_env, ir_graph *irg, char *suffix)
  81 {
  82         char buf[1024];
  83   struct dump_env env;
  84
  85   env.env = arch_env;
  86
  87         ir_snprintf(buf, sizeof(buf), "%F-alloc%s.vcg", irg, suffix);
  88
  89         if((env.f = fopen(buf, "wt")) != NULL) {
  90                 fprintf(env.f, "graph:{title:\"prg\"\n");
  91                 irg_block_walk_graph(irg, dump_allocated_block, NULL, &env);
  92                 fprintf(env.f, "}\n");
  93                 fclose(env.f);
  94         }
  95 }
  96
  97 static void localize_const_walker(ir_node *irn, void *data)
  98 {
  99         if(!is_Block(irn)) {
 100                 int i, n;
 101
 102                 for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
 103                         ir_node *op = get_irn_n(irn, i);
 104                         if(get_irn_opcode(op) == iro_Const) {
 105                                 ir_node *tgt_block, *cnst;
 106
 107                                 /* Special treatment for phi nodes, because phi-usage is different */
 108                                 tgt_block = get_nodes_block(irn);
 109                                 if(is_Phi(irn))
 110                                         tgt_block = get_nodes_block(get_irn_n(tgt_block, i));
 111
 112                                 /*
 113                                  * We have to create the const node by ourselves, since the
 114                                  * firmcons implementation always places it in the start block.
 115                                  */
 116                                 cnst = new_ir_node(NULL, get_irn_irg(irn),
 117                                                 tgt_block, op_Const, get_irn_mode(op), 0, NULL);
 118                                 cnst->attr.con.tv = get_Const_tarval(op);
 119                                 set_irn_n(irn, i, cnst);
 120                         }
 121                 }
 122         }
 123 }
 124
 125 void localize_consts(ir_graph *irg)
 126 {
 127         irg_walk_graph(irg, localize_const_walker, NULL, NULL);
 128         dead_node_elimination(irg);
 129 }
 130
 131 static int sched_edge_hook(FILE *F, ir_node *irn)
 132 {
 133     if(sched_is_scheduled(irn) && sched_has_prev(irn)) {
 134         ir_node *prev = sched_prev(irn);
 135         fprintf(F, "edge:{sourcename:\"");
 136         PRINT_NODEID(irn);
 137         fprintf(F, "\" targetname:\"");
 138         PRINT_NODEID(prev);
 139         fprintf(F, "\" color:magenta}\n");
 140     }
 141     return 1;
 142 }
 143
 144 void dump_ir_block_graph_sched(ir_graph *irg, const char *suffix) {
 145     DUMP_NODE_EDGE_FUNC old = get_dump_node_edge_hook();
 146
 147         dump_consts_local(0);
 148     set_dump_node_edge_hook(sched_edge_hook);
 149     dump_ir_block_graph(irg, suffix);
 150     set_dump_node_edge_hook(old);
 151 }
 152
 153 static void clear_link(ir_node *irn, void *data)
 154 {
 155   set_irn_link(irn, NULL);
 156 }
 157
 158 static void collect_phis(ir_node *irn, void *data)
 159 {
 160   if(is_Phi(irn)) {
 161     ir_node *bl = get_nodes_block(irn);
 162     set_irn_link(irn, get_irn_link(bl));
 163     set_irn_link(bl, irn);
 164   }
 165 }
 166
 167 void be_clear_links(ir_graph *irg)
 168 {
 169         irg_walk_graph(irg, clear_link, NULL, NULL);
 170 }
 171
 172 void be_collect_phis(ir_graph *irg)
 173 {
 174         irg_walk_graph(irg, collect_phis, NULL, NULL);
 175 }
 176
 177
 178 ir_node *dom_up_search(pset *accept, ir_node *start_point_exclusive) {
 179         ir_node *irn, *idom;
 180
 181         /* search the current block */
 182         for (irn=sched_prev(start_point_exclusive); irn; irn=sched_prev(irn))
 183                 if (pset_find_ptr(accept, irn))
 184                         return irn;
 185
 186         idom = get_Block_idom(get_nodes_block(start_point_exclusive));
 187
 188         if (idom)
 189                 return dom_up_search(accept, idom); /* continue search in idom-block */
 190         else
 191                 return NULL; /* this was the start block and we did not find an acceptable irn */
 192 }