X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firnode.c;h=8334e4fee9d8a20931363648e98eaff635753f9d;hb=8399216d8aebc713bbda04b6e3e250a1d52b20bf;hp=fcd49ef0accad3fd17b6dcf03522ccb3b6463fa3;hpb=dddcc630819f338c3b45e2bc646233e6872d5bb6;p=libfirm

diff --git a/ir/ir/irnode.c b/ir/ir/irnode.c
index fcd49ef0a..8334e4fee 100644
--- a/ir/ir/irnode.c
+++ b/ir/ir/irnode.c
@@ -11,9 +11,12 @@
  */
 
 #ifdef HAVE_CONFIG_H
-# include <config.h>
+# include "config.h"
+#endif
+
+#ifdef HAVE_STRING_H
+# include <string.h>
 #endif
-#include <string.h>
 
 #include "ident.h"
 #include "irnode_t.h"
@@ -84,9 +87,34 @@ const char *symconst_name_arr [] = {
   "type_tag", "size", "addr_name", "addr_ent"
 };
 
+/**
+ * Indicates, whether additional data can be registered to ir nodes.
+ * If set to 1, this is not possible anymore.
+ */
+static int forbid_new_data = 0;
+
+/**
+ * The amount of additional space for custom data to be allocated upon
+ * creating a new node.
+ */
+unsigned firm_add_node_size = 0;
+
+
+/* register new space for every node */
+unsigned register_additional_node_data(unsigned size) {
+  assert(!forbid_new_data && "Too late to register additional node data");
+
+  if (forbid_new_data)
+    return 0;
+
+  return firm_add_node_size += size;
+}
+
+
 void
-init_irnode (void)
-{
+init_irnode(void) {
+	/* Forbid the addition of new data to an ir node. */
+	forbid_new_data = 1;
 }
 
 /*
@@ -100,17 +128,19 @@ new_ir_node (dbg_info *db, ir_graph *irg, ir_node *block, ir_op *op, ir_mode *mo
          int arity, ir_node **in)
 {
   ir_node *res;
-  int node_size = offsetof (ir_node, attr) +  op->attr_size;
+  size_t node_size = offsetof(ir_node, attr) + op->attr_size + firm_add_node_size;
+	char *p;
 
   assert(irg && op && mode);
-  res = (ir_node *) obstack_alloc (irg->obst, node_size);
-  memset((void *)res, 0, node_size);
+  p = obstack_alloc (irg->obst, node_size);
+  memset(p, 0, node_size);
+	res = (ir_node *) (p + firm_add_node_size);
 
-  res->kind = k_ir_node;
-  res->op = op;
-  res->mode = mode;
+  res->kind    = k_ir_node;
+  res->op      = op;
+  res->mode    = mode;
   res->visited = 0;
-  res->link = NULL;
+  res->link    = NULL;
   if (arity < 0) {
     res->in = NEW_ARR_F (ir_node *, 1);  /* 1: space for block */
   } else {
@@ -130,14 +160,6 @@ new_ir_node (dbg_info *db, ir_graph *irg, ir_node *block, ir_op *op, ir_mode *mo
   return res;
 }
 
-/* Copies all attributes stored in the old node to the new node.
-   Assumes both have the same opcode and sufficient size. */
-void
-copy_attrs (const ir_node *old_node, ir_node *new_node) {
-  assert(get_irn_op(old_node) == get_irn_op(new_node));
-  memcpy(&new_node->attr, &old_node->attr, get_op_attr_size(get_irn_op(old_node)));
-}
-
 /*-- getting some parameters from ir_nodes --*/
 
 int
@@ -155,6 +177,8 @@ int
   return __get_irn_inter_arity(node);
 }
 
+int (*__get_irn_arity)(const ir_node *node) = __get_irn_intra_arity;
+
 int
 (get_irn_arity)(const ir_node *node) {
   return __get_irn_arity(node);
@@ -169,7 +193,7 @@ int
 ir_node **
 get_irn_in (const ir_node *node) {
   assert(node);
-  if (interprocedural_view) { /* handle Filter and Block specially */
+  if (get_interprocedural_view()) { /* handle Filter and Block specially */
     if (get_irn_opcode(node) == iro_Filter) {
       assert(node->attr.filter.in_cg);
       return node->attr.filter.in_cg;
@@ -185,7 +209,7 @@ void
 set_irn_in (ir_node *node, int arity, ir_node **in) {
   ir_node *** arr;
   assert(node);
-  if (interprocedural_view) { /* handle Filter and Block specially */
+  if (get_interprocedural_view()) { /* handle Filter and Block specially */
     if (get_irn_opcode(node) == iro_Filter) {
       assert(node->attr.filter.in_cg);
       arr = &node->attr.filter.in_cg;
@@ -207,23 +231,26 @@ set_irn_in (ir_node *node, int arity, ir_node **in) {
 }
 
 ir_node *
-(get_irn_intra_n)(ir_node *node, int n) {
+(get_irn_intra_n)(const ir_node *node, int n) {
   return __get_irn_intra_n (node, n);
 }
 
 ir_node *
-(get_irn_inter_n)(ir_node *node, int n) {
+(get_irn_inter_n)(const ir_node *node, int n) {
   return __get_irn_inter_n (node, n);
 }
 
+ir_node *(*__get_irn_n)(const ir_node *node, int n) = __get_irn_intra_n;
+
 ir_node *
-(get_irn_n)(ir_node *node, int n) {
-  return __get_irn_n (node, n);
+(get_irn_n)(const ir_node *node, int n) {
+  return __get_irn_n(node, n);
 }
 
 void
 set_irn_n (ir_node *node, int n, ir_node *in) {
-  assert(node && -1 <= n && n < get_irn_arity(node));
+  assert(node && node->kind == k_ir_node && -1 <= n && n < get_irn_arity(node));
+  assert(in && in->kind == k_ir_node);
   if ((n == -1) && (get_irn_opcode(node) == iro_Filter)) {
     /* Change block pred in both views! */
     node->in[n + 1] = in;
@@ -231,7 +258,7 @@ set_irn_n (ir_node *node, int n, ir_node *in) {
     node->attr.filter.in_cg[n + 1] = in;
     return;
   }
-  if (interprocedural_view) { /* handle Filter and Block specially */
+  if (get_interprocedural_view()) { /* handle Filter and Block specially */
     if (get_irn_opcode(node) == iro_Filter) {
       assert(node->attr.filter.in_cg);
       node->attr.filter.in_cg[n + 1] = in;
@@ -352,6 +379,21 @@ void *
   return __get_irn_link(node);
 }
 
+op_pin_state
+(get_irn_pinned)(const ir_node *node) {
+  return __get_irn_pinned(node);
+}
+
+void set_irn_pinned(ir_node *node, op_pin_state state) {
+  /* due to optimization an opt may be turned into a Tuple */
+  if (get_irn_op(node) == op_Tuple)
+    return;
+
+  assert(node && get_op_pinned(get_irn_op(node)) >= op_pin_state_exc_pinned);
+  assert(state == op_pin_state_pinned || state == op_pin_state_floats);
+
+  node->attr.except.pin_state = state;
+}
 
 #ifdef DO_HEAPANALYSIS
 /* Access the abstract interpretation information of a node.
@@ -369,6 +411,12 @@ struct section *firm_get_irn_section(ir_node *n) {
 void firm_set_irn_section(ir_node *n, struct section *s) {
   n->sec = s;
 }
+#else
+/* Dummies needed for firmjni. */
+struct abstval *get_irn_abst_value(ir_node *n) { return NULL; }
+void set_irn_abst_value(ir_node *n, struct abstval *os) {}
+struct section *firm_get_irn_section(ir_node *n) { return NULL; }
+void firm_set_irn_section(ir_node *n, struct section *s) {}
 #endif /* DO_HEAPANALYSIS */
 
 
@@ -379,7 +427,7 @@ get_irn_node_nr(const ir_node *node) {
 #ifdef DEBUG_libfirm
   return node->node_nr;
 #else
-  return (long)&node;
+  return (long)node;
 #endif
 }
 
@@ -425,13 +473,6 @@ get_irn_call_attr (ir_node *node)
   return node->attr.call.cld_tp = skip_tid(node->attr.call.cld_tp);
 }
 
-type *
-get_irn_funccall_attr (ir_node *node)
-{
-  assert (node->op == op_FuncCall);
-  return node->attr.call.cld_tp = skip_tid(node->attr.call.cld_tp);
-}
-
 sel_attr
 get_irn_sel_attr (ir_node *node)
 {
@@ -453,11 +494,33 @@ get_irn_block_attr (ir_node *node)
   return node->attr.block;
 }
 
+load_attr
+get_irn_load_attr (ir_node *node)
+{
+  assert (node->op == op_Load);
+  return node->attr.load;
+}
+
+store_attr
+get_irn_store_attr (ir_node *node)
+{
+  assert (node->op == op_Store);
+  return node->attr.store;
+}
+
+except_attr
+get_irn_except_attr (ir_node *node)
+{
+  assert (node->op == op_Div || node->op == op_Quot ||
+          node->op == op_DivMod || node->op == op_Mod || node->op == op_Call || node->op == op_Alloc);
+  return node->attr.except;
+}
+
 /** manipulate fields of individual nodes **/
 
 /* this works for all except Block */
 ir_node *
-get_nodes_block (ir_node *node) {
+get_nodes_block (const ir_node *node) {
   assert (!(node->op == op_Block));
   return get_irn_n(node, -1);
 }
@@ -524,9 +587,8 @@ get_Block_n_cfgpreds (ir_node *node) {
 
 ir_node *
 get_Block_cfgpred (ir_node *node, int pos) {
-  assert(node);
-  assert (node->op == op_Block);
   assert(-1 <= pos && pos < get_irn_arity(node));
+  assert(node->op == op_Block);
   return get_irn_n(node, pos);
 }
 
@@ -584,52 +646,6 @@ set_Block_graph_arr (ir_node *node, int pos, ir_node *value) {
   node->attr.block.graph_arr[pos+1] = value;
 }
 
-/* handler handling for Blocks * /
-void
-set_Block_handler (ir_node *block, ir_node *handler)  {
-  assert ((block->op == op_Block));
-  assert ((handler->op == op_Block));
-  block->attr.block.handler_entry = handler;
-}
-
-ir_node *
-get_Block_handler (ir_node *block) {
-  assert ((block->op == op_Block));
-  return (block->attr.block.handler_entry);
-}
-
-/ * handler handling for Nodes * /
-void
-set_Node_handler (ir_node *node, ir_node *handler) {
-  set_Block_handler (get_nodes_block (node), handler);
-}
-
-ir_node *
-get_Node_handler (ir_node *node) {
-  return (get_Block_handler (get_nodes_block (node)));
-}
-
-/ * exc_t handling for Blocks * /
-void set_Block_exc (ir_node *block, exc_t exc) {
-  assert ((block->op == op_Block));
-  block->attr.block.exc = exc;
-}
-
-exc_t get_Block_exc (ir_node *block) {
-  assert ((block->op == op_Block));
-  return (block->attr.block.exc);
-}
-
-/ * exc_t handling for Nodes * /
-void set_Node_exc (ir_node *node, exc_t exc) {
-  set_Block_exc (get_nodes_block (node), exc);
-}
-
-exc_t get_Node_exc (ir_node *node) {
-  return (get_Block_exc (get_nodes_block (node)));
-}
-*/
-
 void set_Block_cg_cfgpred_arr(ir_node * node, int arity, ir_node ** in) {
   assert(node->op == op_Block);
   if (node->attr.block.in_cg == NULL || arity != ARR_LEN(node->attr.block.in_cg) - 1) {
@@ -639,10 +655,10 @@ void set_Block_cg_cfgpred_arr(ir_node * node, int arity, ir_node ** in) {
     {
       /* Fix backedge array.  fix_backedges operates depending on
      interprocedural_view. */
-      bool ipv = interprocedural_view;
-      interprocedural_view = true;
+      int ipv = get_interprocedural_view();
+      set_interprocedural_view(true);
       fix_backedges(current_ir_graph->obst, node);
-      interprocedural_view = ipv;
+      set_interprocedural_view(ipv);
     }
   }
   memcpy(node->attr.block.in_cg + 1, in, sizeof(ir_node *) * arity);
@@ -675,6 +691,14 @@ void remove_Block_cg_cfgpred_arr(ir_node * node) {
   node->attr.block.in_cg = NULL;
 }
 
+ir_node *(set_Block_dead)(ir_node *block) {
+  return __set_Block_dead(block);
+}
+
+int (is_Block_dead)(const ir_node *block) {
+  return __is_Block_dead(block);
+}
+
 void
 set_Start_irg(ir_node *node, ir_graph *irg) {
   assert(node->op == op_Start);
@@ -873,11 +897,10 @@ get_Const_type (ir_node *node) {
 void
 set_Const_type (ir_node *node, type *tp) {
   assert (node->op == op_Const);
-  if (tp != unknown_type) {
+  if (tp != firm_unknown_type) {
     assert (is_atomic_type(tp));
     assert (get_type_mode(tp) == get_irn_mode(node));
   }
-
   node->attr.con.tp = tp;
 }
 
@@ -938,7 +961,6 @@ void     set_SymConst_entity (ir_node *node, entity *ent) {
   node->attr.i.sym.entity_p  = ent;
 }
 
-
 union symconst_symbol
 get_SymConst_symbol (ir_node *node) {
   assert (node->op == op_SymConst);
@@ -952,6 +974,19 @@ set_SymConst_symbol (ir_node *node, union symconst_symbol sym) {
   node->attr.i.sym = sym;
 }
 
+type *
+get_SymConst_value_type (ir_node *node) {
+  assert (node->op == op_SymConst);
+  if (node->attr.i.tp) node->attr.i.tp = skip_tid(node->attr.i.tp);
+  return node->attr.i.tp;
+}
+
+void
+set_SymConst_value_type (ir_node *node, type *tp) {
+  assert (node->op == op_SymConst);
+  node->attr.i.tp = tp;
+}
+
 ir_node *
 get_Sel_mem (ir_node *node) {
   assert (node->op == op_Sel);
@@ -1130,25 +1165,27 @@ get_Call_type (ir_node *node) {
 void
 set_Call_type (ir_node *node, type *tp) {
   assert (node->op == op_Call);
-  assert (is_method_type(tp));
+  assert ((get_unknown_type() == tp) || is_method_type(tp));
   node->attr.call.cld_tp = tp;
 }
 
 int Call_has_callees(ir_node *node) {
-  return (node->attr.call.callee_arr != NULL);
+  assert(node && node->op == op_Call);
+  return ((get_irg_callee_info_state(get_irn_irg(node)) != irg_callee_info_none) &&
+      (node->attr.call.callee_arr != NULL));
 }
 
 int get_Call_n_callees(ir_node * node) {
-  assert(node->op == op_Call && node->attr.call.callee_arr);
+  assert(node && node->op == op_Call && node->attr.call.callee_arr);
   return ARR_LEN(node->attr.call.callee_arr);
 }
 
 entity * get_Call_callee(ir_node * node, int pos) {
-  assert(node->op == op_Call && node->attr.call.callee_arr);
+  assert(pos >= 0 && pos < get_Call_n_callees(node));
   return node->attr.call.callee_arr[pos];
 }
 
-void set_Call_callee_arr(ir_node * node, int n, entity ** arr) {
+void set_Call_callee_arr(ir_node * node, const int n, entity ** arr) {
   assert(node->op == op_Call);
   if (node->attr.call.callee_arr == NULL || get_Call_n_callees(node) != n) {
     node->attr.call.callee_arr = NEW_ARR_D(entity *, current_ir_graph->obst, n);
@@ -1178,94 +1215,6 @@ void  set_CallBegin_call (ir_node *node, ir_node *call) {
   node->attr.callbegin.call = call;
 }
 
-ir_node *
-get_FuncCall_ptr (ir_node *node) {
-  assert (node->op == op_FuncCall);
-  return get_irn_n(node, 0);
-}
-
-void
-set_FuncCall_ptr (ir_node *node, ir_node *ptr) {
-  assert (node->op == op_FuncCall);
-  set_irn_n(node, 0, ptr);
-}
-
-ir_node **
-get_FuncCall_param_arr (ir_node *node) {
-  assert (node->op == op_FuncCall);
-  return (ir_node **)&get_irn_in(node)[FUNCCALL_PARAM_OFFSET];
-}
-
-int
-get_FuncCall_n_params (ir_node *node)  {
-  assert (node->op == op_FuncCall);
-  return (get_irn_arity(node) - FUNCCALL_PARAM_OFFSET);
-}
-
-int
-get_FuncCall_arity (ir_node *node) {
-  assert (node->op == op_FuncCall);
-  return get_FuncCall_n_params(node);
-}
-
-/* void
-set_FuncCall_arity (ir_node *node, ir_node *arity) {
-  assert (node->op == op_FuncCall);
-}
-*/
-
-ir_node *
-get_FuncCall_param (ir_node *node, int pos) {
-  assert (node->op == op_FuncCall);
-  return get_irn_n(node, pos + FUNCCALL_PARAM_OFFSET);
-}
-
-void
-set_FuncCall_param (ir_node *node, int pos, ir_node *param) {
-  assert (node->op == op_FuncCall);
-  set_irn_n(node, pos + FUNCCALL_PARAM_OFFSET, param);
-}
-
-type *
-get_FuncCall_type (ir_node *node) {
-  assert (node->op == op_FuncCall);
-  return node->attr.call.cld_tp = skip_tid(node->attr.call.cld_tp);
-}
-
-void
-set_FuncCall_type (ir_node *node, type *tp) {
-  assert (node->op == op_FuncCall);
-  assert (is_method_type(tp));
-  node->attr.call.cld_tp = tp;
-}
-
-int FuncCall_has_callees(ir_node *node) {
-  return (node->attr.call.callee_arr != NULL);
-}
-
-int get_FuncCall_n_callees(ir_node * node) {
-  assert(node->op == op_FuncCall && node->attr.call.callee_arr);
-  return ARR_LEN(node->attr.call.callee_arr);
-}
-
-entity * get_FuncCall_callee(ir_node * node, int pos) {
-  assert(node->op == op_FuncCall && node->attr.call.callee_arr);
-  return node->attr.call.callee_arr[pos];
-}
-
-void set_FuncCall_callee_arr(ir_node * node, int n, entity ** arr) {
-  assert(node->op == op_FuncCall);
-  if (node->attr.call.callee_arr == NULL || get_Call_n_callees(node) != n) {
-    node->attr.call.callee_arr = NEW_ARR_D(entity *, current_ir_graph->obst, n);
-  }
-  memcpy(node->attr.call.callee_arr, arr, n * sizeof(entity *));
-}
-
-void remove_FuncCall_callee_arr(ir_node * node) {
-  assert(node->op == op_FuncCall);
-  node->attr.call.callee_arr = NULL;
-}
-
 
 #define BINOP(OP)                   \
 ir_node * get_##OP##_left(ir_node *node) {      \
@@ -1381,8 +1330,8 @@ set_Cast_type (ir_node *node, type *to_tp) {
 }
 
 int
-is_unop (ir_node *node) {
-  return (node->op->opar == oparity_unary);
+(is_unop)(const ir_node *node) {
+  return __is_unop(node);
 }
 
 ir_node *
@@ -1403,8 +1352,8 @@ set_unop_op (ir_node *node, ir_node *op) {
 }
 
 int
-is_binop (ir_node *node) {
-  return (node->op->opar == oparity_binary);
+(is_binop)(const ir_node *node) {
+  return __is_binop(node);
 }
 
 ir_node *
@@ -1441,13 +1390,13 @@ set_binop_right (ir_node *node, ir_node *right) {
   assert (node->op->opar == oparity_binary);
 }
 
-int is_Phi (ir_node *n) {
+int is_Phi (const ir_node *n) {
   ir_op *op;
 
   assert(n);
   op = get_irn_op(n);
 
-  if (op == op_Filter) return interprocedural_view;
+  if (op == op_Filter) return get_interprocedural_view();
 
   if (op == op_Phi)
     return  ((get_irg_phase_state(get_irn_irg(n)) !=  phase_building) ||
@@ -1456,7 +1405,7 @@ int is_Phi (ir_node *n) {
   return 0;
 }
 
-int is_Phi0 (ir_node *n) {
+int is_Phi0 (const ir_node *n) {
   assert(n);
 
   return ((get_irn_op(n) == op_Phi) &&
@@ -1494,6 +1443,31 @@ set_Phi_pred (ir_node *node, int pos, ir_node *pred) {
   set_irn_n(node, pos, pred);
 }
 
+
+int is_memop(ir_node *node) {
+  return ((get_irn_op(node) == op_Load) || (get_irn_op(node) == op_Store));
+}
+
+ir_node *get_memop_mem (ir_node *node) {
+  assert(is_memop(node));
+  return get_irn_n(node, 0);
+}
+
+void     set_memop_mem (ir_node *node, ir_node *mem) {
+  assert(is_memop(node));
+  set_irn_n(node, 0, mem);
+}
+
+ir_node *get_memop_ptr (ir_node *node) {
+  assert(is_memop(node));
+  return get_irn_n(node, 1);
+}
+
+void     set_memop_ptr (ir_node *node, ir_node *ptr) {
+  assert(is_memop(node));
+  set_irn_n(node, 1, ptr);
+}
+
 ir_node *
 get_Load_mem (ir_node *node) {
   assert (node->op == op_Load);
@@ -1518,6 +1492,30 @@ set_Load_ptr (ir_node *node, ir_node *ptr) {
   set_irn_n(node, 1, ptr);
 }
 
+ir_mode *
+get_Load_mode (ir_node *node) {
+  assert (node->op == op_Load);
+  return node->attr.load.load_mode;
+}
+
+void
+set_Load_mode (ir_node *node, ir_mode *mode) {
+  assert (node->op == op_Load);
+  node->attr.load.load_mode = mode;
+}
+
+ent_volatility
+get_Load_volatility (ir_node *node) {
+  assert (node->op == op_Load);
+  return node->attr.load.volatility;
+}
+
+void
+set_Load_volatility (ir_node *node, ent_volatility volatility) {
+  assert (node->op == op_Load);
+  node->attr.load.volatility = volatility;
+}
+
 
 ir_node *
 get_Store_mem (ir_node *node) {
@@ -1555,6 +1553,19 @@ set_Store_value (ir_node *node, ir_node *value) {
   set_irn_n(node, 2, value);
 }
 
+ent_volatility
+get_Store_volatility (ir_node *node) {
+  assert (node->op == op_Store);
+  return node->attr.store.volatility;
+}
+
+void
+set_Store_volatility (ir_node *node, ent_volatility volatility) {
+  assert (node->op == op_Store);
+  node->attr.store.volatility = volatility;
+}
+
+
 ir_node *
 get_Alloc_mem (ir_node *node) {
   assert (node->op == op_Alloc);
@@ -1833,10 +1844,38 @@ ir_node *get_Filter_cg_pred(ir_node *node, int pos) {
   return node->attr.filter.in_cg[pos + 1];
 }
 
+/* Mux support */
+ir_node *get_Mux_sel   (ir_node *node) {
+  assert(node->op == op_Mux);
+  return node->in[1];
+}
+void     set_Mux_sel   (ir_node *node, ir_node *sel) {
+  assert(node->op == op_Mux);
+  node->in[1] = sel;
+}
+
+ir_node *get_Mux_false (ir_node *node) {
+  assert(node->op == op_Mux);
+  return node->in[2];
+}
+void     set_Mux_false (ir_node *node, ir_node *ir_false) {
+  assert(node->op == op_Mux);
+  node->in[2] = ir_false;
+}
+
+ir_node *get_Mux_true  (ir_node *node) {
+  assert(node->op == op_Mux);
+  return node->in[3];
+}
+void     set_Mux_true  (ir_node *node, ir_node *ir_true) {
+  assert(node->op == op_Mux);
+  node->in[3] = ir_true;
+}
+
 
 ir_graph *
-get_irn_irg(ir_node *node) {
-  if (get_irn_op(node) != op_Block)
+get_irn_irg(const ir_node *node) {
+  if (! is_Block(node))
     node = get_nodes_block(node);
   if (is_Bad(node))  /* sometimes bad is predecessor of nodes instead of block: in case of optimization */
     node = get_nodes_block(node);
@@ -1953,55 +1992,50 @@ skip_Id (ir_node *node) {
 #endif
 
 int
-is_Bad (ir_node *node) {
-  assert(node);
-  if ((node) && get_irn_opcode(node) == iro_Bad)
-    return 1;
-  return 0;
+(is_Bad)(const ir_node *node) {
+  return __is_Bad(node);
 }
 
 int
-is_no_Block (ir_node *node) {
-  assert(node);
-  return (get_irn_opcode(node) != iro_Block);
+(is_no_Block)(const ir_node *node) {
+  return  __is_no_Block(node);
 }
 
 int
-is_Block (ir_node *node) {
-  assert(node);
-  return (get_irn_opcode(node) == iro_Block);
+(is_Block)(const ir_node *node) {
+  return __is_Block(node);
 }
 
 /* returns true if node is a Unknown node. */
 int
-is_Unknown (ir_node *node) {
+is_Unknown (const ir_node *node) {
   assert(node);
-  return (get_irn_opcode(node) == iro_Unknown);
+  return (get_irn_op(node) == op_Unknown);
 }
 
 int
 is_Proj (const ir_node *node) {
   assert(node);
   return node->op == op_Proj
-    || (!interprocedural_view && node->op == op_Filter);
+    || (!get_interprocedural_view() && node->op == op_Filter);
 }
 
 /* Returns true if the operation manipulates control flow. */
 int
-is_cfop(ir_node *node) {
+is_cfop(const ir_node *node) {
   return is_cfopcode(get_irn_op(node));
 }
 
 /* Returns true if the operation manipulates interprocedural control flow:
    CallBegin, EndReg, EndExcept */
-int is_ip_cfop(ir_node *node) {
+int is_ip_cfop(const ir_node *node) {
   return is_ip_cfopcode(get_irn_op(node));
 }
 
 /* Returns true if the operation can change the control flow because
    of an exception. */
 int
-is_fragile_op(ir_node *node) {
+is_fragile_op(const ir_node *node) {
   return is_op_fragile(get_irn_op(node));
 }
 
@@ -2028,6 +2062,13 @@ ir_node *get_fragile_op_mem(ir_node *node) {
   }
 }
 
+/* Returns true if the operation is a forking control flow operation. */
+int
+is_forking_op(const ir_node *node) {
+  return is_op_forking(get_irn_op(node));
+}
+
+
 #ifdef DEBUG_libfirm
 void dump_irn (ir_node *n) {
   int i, arity = get_irn_arity(n);