X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Ftr%2Ftypewalk.c;h=4dcae5ac653d2f6dabe0e1187dbdbc44618ce32c;hb=5d2f7c6eca2173a427ccf35a4b8ac793706de2e9;hp=ed11560e4d0e6f3af367e34a328b5c15deb406e7;hpb=f548cf8f53f671a577097a3c92f57b3baf16d98b;p=libfirm

diff --git a/ir/tr/typewalk.c b/ir/tr/typewalk.c
index ed11560e4..4dcae5ac6 100644
--- a/ir/tr/typewalk.c
+++ b/ir/tr/typewalk.c
@@ -1,41 +1,55 @@
-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Author: Goetz Lindenmaier
-**
-** traverse the type information.  The walker walks the whole ir graph
-** to find the distinct type trees in the type graph forest.
-** - execute the pre function before recursion
-** - execute the post function after recursion
-*/
+/*
+ * Project:     libFIRM
+ * File name:   ir/tr/typewalk.c
+ * Purpose:     Traverse the type information.
+ * Author:      Goetz Lindenmaier
+ * Modified by:
+ * Created:
+ * CVS-ID:      $Id$
+ * Copyright:   (c) 1999-2003 Universität Karlsruhe
+ * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
+ */
+
+/*
+ * traverse the type information.  The walker walks the whole ir graph
+ * to find the distinct type trees in the type graph forest.
+ * - execute the pre function before recursion
+ * - execute the post function after recursion
+ */
+
 
 #ifdef HAVE_CONFIG_H
-# include <config.h>
+# include "config.h"
+#endif
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
 #endif
 
-#include <stdlib.h>
 #include <stdio.h>
-#include "irgwalk.h"
-#include "irgraph.h"
-#include "irnode.h"
-#include "irprog.h"
-#include "type_or_entity.h"
 
-/* Make types visible to allow most efficient access */
-# include "entity_t.h"
+#include "typewalk.h"
+#include "entity_t.h"
 #include "type_t.h"
+#include "type_or_entity.h"
+#include "typegmod.h"
+
+#include "irprog_t.h"
+#include "irgraph_t.h"
+#include "irnode_t.h"
+#include "irgwalk.h"
 
 typedef struct type_walk_env {
-  void *pre;
-  void *post;
+  type_walk_func *pre;
+  type_walk_func *post;
   void *env;
 } type_walk_env;
 
 
-void type_walk_2(type_or_ent *tore,
-	       void (pre)(type_or_ent*, void*),
-	       void (post)(type_or_ent*, void*),
-	       void *env)
+static void type_walk_2(type_or_ent *tore,
+			void (*pre) (type_or_ent*, void*),
+			void (*post)(type_or_ent*, void*),
+			void *env)
 {
   int i;
 
@@ -77,17 +91,17 @@ void type_walk_2(type_or_ent *tore,
       switch (get_type_tpop_code(tp)) {
       case tpo_class:
 	{
-	  for (i=0; i<get_class_n_supertype(tp); i++)
+	  for (i=0; i<get_class_n_supertypes(tp); i++)
 	    type_walk_2((type_or_ent *)get_class_supertype(tp, i), pre, post, env);
-	  for (i=0; i<get_class_n_member(tp); i++)
+	  for (i=0; i<get_class_n_members(tp); i++)
 	    type_walk_2((type_or_ent *)get_class_member(tp, i), pre, post, env);
-	  for (i=0; i<get_class_n_subtype(tp); i++)
+	  for (i=0; i<get_class_n_subtypes(tp); i++)
 	    type_walk_2((type_or_ent *)get_class_subtype(tp, i), pre, post, env);
 	}
 	break;
       case tpo_struct:
 	{
-	  for (i=0; i<get_struct_n_member(tp); i++)
+	  for (i=0; i<get_struct_n_members(tp); i++)
 	    type_walk_2((type_or_ent *)get_struct_member(tp, i), pre, post, env);
 	}
 	break;
@@ -95,7 +109,7 @@ void type_walk_2(type_or_ent *tore,
 	{
 	  for (i = 0; i < get_method_n_params(tp); i++)
 	    type_walk_2((type_or_ent *)get_method_param_type(tp, i), pre, post, env);
-	  for (i = 0; i < get_method_n_res(tp); i++)
+	  for (i = 0; i < get_method_n_ress(tp); i++)
 	    type_walk_2((type_or_ent *)get_method_res_type(tp, i), pre, post, env);
 	}
 	break;
@@ -108,6 +122,8 @@ void type_walk_2(type_or_ent *tore,
       case tpo_array:
 	type_walk_2((type_or_ent *)get_array_element_type(tp),
 		    pre, post, env);
+	type_walk_2((type_or_ent *)get_array_element_entity(tp),
+		    pre, post, env);
 	break;
       case tpo_enumeration:
 	/* a leave */
@@ -118,10 +134,12 @@ void type_walk_2(type_or_ent *tore,
 	break;
       case tpo_primitive:
       case tpo_id:
+      case tpo_none:
+      case tpo_unknown:
 	/* a leave. */
 	break;
       default:
-	printf(" *** Faulty type! \n");
+	assert(0 && "Faulty type");
 	break;
       }
     } break; /* end case k_type */
@@ -137,17 +155,23 @@ void type_walk_2(type_or_ent *tore,
   return;
 }
 
-void start_type_walk(ir_node *node, void *env) {
-  void *pre  = ((type_walk_env *)env)->pre;
-  void *post = ((type_walk_env *)env)->post;
-  void *envi = ((type_walk_env *)env)->env;
+/**  Check wether node contains types or entities as an attribute.
+     If so start a walk over that information. */
+static void start_type_walk(ir_node *node, void *env) {
+ type_walk_func *pre;
+ type_walk_func *post;
+ void *envi;
+
+  pre  = ((type_walk_env *)env)->pre;
+  post = ((type_walk_env *)env)->post;
+  envi = ((type_walk_env *)env)->env;
 
   assert(node);
 
   switch (get_irn_opcode(node)) {  /* node label */
   case iro_SymConst:
-    if (   (get_SymConst_kind(node) == type_tag)
-	   || (get_SymConst_kind(node) == size))
+    if (   (get_SymConst_kind(node) ==symconst_type_tag)
+	   || (get_SymConst_kind(node) ==symconst_size))
       type_walk_2((type_or_ent *)get_SymConst_type(node), pre, post, envi);
     break;
   case iro_Sel:
@@ -160,51 +184,66 @@ void start_type_walk(ir_node *node, void *env) {
     type_walk_2((type_or_ent *)get_Alloc_type(node), pre, post, envi);
     break;
   case iro_Free:
-    printf("here in typewalk\n");
     type_walk_2((type_or_ent *)get_Free_type(node), pre, post, envi);
     break;
+  case iro_Cast:
+    type_walk_2((type_or_ent *)get_Cast_type(node), pre, post, envi);
+    break;
   default:
     break;
   }
 }
 
-void type_walk(void (pre)(type_or_ent*, void*),
-	       void (post)(type_or_ent*, void*),
-	       void *env) {
-  int i;
+void type_walk(type_walk_func *pre, type_walk_func *post, void *env) {
+  int i, n_types = get_irp_n_types();
+
   ++type_visited;
-  type_walk_2((type_or_ent *)get_glob_type(), pre, post, env);
-  for (i = 0; i < get_irp_n_types(); i++) {
+  for (i = 0; i < n_types; i++) {
     type_walk_2((type_or_ent *)get_irp_type(i), pre, post, env);
   }
+  type_walk_2((type_or_ent *)get_glob_type(), pre, post, env);
 }
 
 void type_walk_irg (ir_graph *irg,
-		    void (pre)(type_or_ent*, void*),
-		    void (post)(type_or_ent*, void*),
+		    void (*pre)(type_or_ent*, void*),
+		    void (*post)(type_or_ent*, void*),
 		    void *env)
 {
+  ir_graph *rem = current_ir_graph;
   /* this is needed to pass the parameters to the walker that actually
      walks the type information */
-  type_walk_env* type_env;
-  type_env = (type_walk_env *) malloc (sizeof(type_walk_env));
-  type_env->pre = pre;
-  type_env->post = post;
-  type_env->env = env;
+  type_walk_env type_env;
+
+  type_env.pre  = pre;
+  type_env.post = post;
+  type_env.env  = env;
 
+  current_ir_graph = irg;
+
+  /* We walk over the irg to find all irnodes that contain an attribute
+     with type information.  If we find one we call a type walker to
+     touch the reachable type information.
+     The same type can be referenced by several irnodes.  To avoid
+     repeated visits of the same type node we must decrease the
+     type visited flag for each walk.  This is done in start_type_walk().
+     Here we initially increase the flag.  We only call type_walk_2 that does
+     not increase the flag.
+  */
   ++type_visited;
-  irg_walk(get_irg_end(irg), start_type_walk, NULL, type_env);
+  irg_walk(get_irg_end(irg), start_type_walk, NULL, &type_env);
+
+  type_walk_2((type_or_ent *)get_irg_entity(irg), pre, post, env);
 
-  type_walk_2((type_or_ent *)get_irg_ent(irg), pre, post, env);
+  type_walk_2((type_or_ent *)get_irg_frame_type(irg), pre, post, env);
 
-  free(type_env);
+  current_ir_graph = rem;
   return;
 }
 
-void type_walk_s2s_2(type_or_ent *tore,
-		     void (pre)(type_or_ent*, void*),
-		     void (post)(type_or_ent*, void*),
-		     void *env)
+static void type_walk_s2s_2(type_or_ent *tore,
+			    void (*pre)(type_or_ent*, void*),
+			    void (*post)(type_or_ent*, void*),
+			    void *env)
 {
   int i;
 
@@ -233,16 +272,109 @@ void type_walk_s2s_2(type_or_ent *tore,
       switch (get_type_tpop_code(tp)) {
       case tpo_class:
 	{
-	  for (i=0; i<get_class_n_supertype(tp); i++)
-	    type_walk_s2s_2((type_or_ent *)get_class_supertype(tp, i), pre, post, env);
+	  for (i = 0; i < get_class_n_supertypes(tp); i++) {
+	    type_walk_s2s_2((type_or_ent *)get_class_supertype(tp, i), pre,
+			    post, env);
+	  }
+	  /* execute pre method */
+	  if(pre)
+	    pre(tore, env);
+	  tp = skip_tid((type*)tore);
 
+	  for (i = 0; i < get_class_n_subtypes(tp); i++) {
+	    type_walk_s2s_2((type_or_ent *)get_class_subtype(tp, i), pre,
+			    post, env);
+	  }
+
+	  /* execute post method */
+	  if(post)
+	    post(tore, env);
+	}
+	break;
+      case tpo_struct:
+      case tpo_method:
+      case tpo_union:
+      case tpo_array:
+      case tpo_enumeration:
+      case tpo_pointer:
+      case tpo_primitive:
+      case tpo_id:
+	/* dont care */
+	break;
+      default:
+	printf(" *** Faulty type! \n");
+	break;
+      }
+    } break; /* end case k_type */
+  case k_entity:
+    /* dont care */
+    break;
+  default:
+    printf(" *** Faulty type or entity! \n");
+    break;
+  }
+  return;
+}
+
+void type_walk_super2sub(
+		  void (*pre)(type_or_ent*, void*),
+		  void (*post)(type_or_ent*, void*),
+		  void *env)
+{
+  int i, n_types = get_irp_n_types();
+  type *tp;
+  ++type_visited;
+  type_walk_s2s_2((type_or_ent *)get_glob_type(), pre, post, env);
+  for (i = 0; i < n_types; i++) {
+    tp = get_irp_type(i);
+    type_walk_s2s_2((type_or_ent *)tp, pre, post, env);
+  }
+}
+
+/*****************************************************************************/
+
+static void
+type_walk_super_2(type_or_ent *tore,
+		  void (*pre)(type_or_ent*, void*),
+		  void (*post)(type_or_ent*, void*),
+		  void *env)
+{
+  int i;
+
+  /* marked? */
+  switch (get_kind(tore)) {
+  case k_entity:
+    if (((entity *)tore)->visit >= type_visited) return;
+    break;
+  case k_type:
+    if(type_id == get_type_tpop((type*)tore)) {
+      type_walk_super_2((type_or_ent *)skip_tid((type *)tore), pre, post, env);
+      return;
+    }
+    if (((type *)tore)->visit >= type_visited) return;
+    break;
+  default:
+    break;
+  }
+
+  /* iterate */
+  switch (get_kind(tore)) {
+  case k_type:
+    {
+      type *tp = (type *)tore;
+      mark_type_visited(tp);
+      switch (get_type_tpop_code(tp)) {
+      case tpo_class:
+	{
 	  /* execute pre method */
 	  if(pre)
 	    pre(tore, env);
 	  tp = skip_tid((type*)tore);
 
-	  for (i=0; i<get_class_n_subtype(tp); i++)
-	    type_walk_s2s_2((type_or_ent *)get_class_subtype(tp, i), pre, post, env);
+	  for (i = 0; i < get_class_n_supertypes(tp); i++) {
+	    type_walk_super_2((type_or_ent *)get_class_supertype(tp, i), pre,
+			      post, env);
+	  }
 
 	  /* execute post method */
 	  if(post)
@@ -274,13 +406,109 @@ void type_walk_s2s_2(type_or_ent *tore,
   return;
 }
 
-void type_walk_super2sub(void (pre)(type_or_ent*, void*),
-			 void (post)(type_or_ent*, void*),
-			 void *env) {
+void type_walk_super(
+		  void (*pre)(type_or_ent*, void*),
+		  void (*post)(type_or_ent*, void*),
+		  void *env) {
+  int i, n_types = get_irp_n_types();
+  type *tp;
+  ++type_visited;
+  type_walk_super_2((type_or_ent *)get_glob_type(), pre, post, env);
+  for (i = 0; i < n_types; i++) {
+    tp = get_irp_type(i);
+    type_walk_super_2((type_or_ent *)tp, pre, post, env);
+  }
+}
+
+/*****************************************************************************/
+
+
+static void
+class_walk_s2s_2(type *tp,
+		 void (*pre)(type*, void*),
+		 void (*post)(type*, void*),
+		 void *env)
+{
   int i;
+
+  /* marked? */
+  if (tp->visit >= type_visited) return;
+
+  assert(is_class_type(tp));
+  /* Assure all supertypes are visited before */
+  for (i=0; i < get_class_n_supertypes(tp); i++) {
+    if (get_type_visited(get_class_supertype(tp, i)) < type_visited)
+      return;
+  }
+
+  mark_type_visited(tp);
+
+  /* execute pre method */
+  if(pre)
+    pre(tp, env);
+
+  tp = skip_tid((type*)tp);
+  for (i=0; i<get_class_n_subtypes(tp); i++) {
+    class_walk_s2s_2(get_class_subtype(tp, i), pre, post, env);
+  }
+  /* execute post method */
+  if(post)
+    post(tp, env);
+
+  return;
+}
+
+void class_walk_super2sub(
+		  void (*pre)(type*, void*),
+		  void (*post)(type*, void*),
+		  void *env)
+{
+  int i, n_types = get_irp_n_types();
+  type *tp;
+
   ++type_visited;
-  type_walk_s2s_2((type_or_ent *)get_glob_type(), pre, post, env);
-  for (i = 0; i < get_irp_n_types(); i++) {
-    type_walk_s2s_2((type_or_ent *)get_irp_type(i), pre, post, env);
+  for (i = 0; i < n_types; i++) {
+    tp = get_irp_type(i);
+    if (is_class_type(tp) &&
+	(get_class_n_supertypes(tp) == 0) &&
+	(tp->visit < type_visited))  {
+      assert(!is_frame_type(tp));
+      assert(tp != get_glob_type());
+      class_walk_s2s_2(tp, pre, post, env);
+    }
+  }
+}
+
+
+/* Walks over all entities in the type */
+void walk_types_entities(
+		  type *tp,
+		  void (*doit)(entity*, void*),
+		  void *env)
+{
+  int i;
+  switch(get_type_tpop_code(tp)) {
+  case tpo_class: {
+    for (i=0; i<get_class_n_members(tp); i++)
+      doit(get_class_member(tp, i), env);
+  } break;
+  case tpo_struct: {
+    for (i=0; i<get_struct_n_members(tp); i++)
+      doit(get_struct_member(tp, i), env);
+  } break;
+  case tpo_union: {
+    for (i = 0; i < get_union_n_members(tp); i++)
+      doit(get_union_member(tp, i), env);
+  } break;
+  case tpo_array: {
+      doit(get_array_element_entity(tp), env);
+  } break;
+  case tpo_method:
+  case tpo_enumeration:
+  case tpo_pointer:
+  case tpo_primitive:
+  case tpo_id:
+  default:
+    break;
   }
 }