X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firvrfy.c;h=a7f3ef32f727ca88db8351fffd3eae29799dec2f;hb=265829494264529c53e5180a56cc9f1196346385;hp=87c4507134a0dc8de875f46574b3547a427798fc;hpb=b774ac267f6492f992b779ea95cb20a1c89b5dca;p=libfirm

diff --git a/ir/ir/irvrfy.c b/ir/ir/irvrfy.c
index 87c450713..a7f3ef32f 100644
--- a/ir/ir/irvrfy.c
+++ b/ir/ir/irvrfy.c
@@ -1,508 +1,1312 @@
-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Christian Schaefer
-**
-**
-*/
-
-/* $Id$ */
+/*
+ * Project:     libFIRM
+ * File name:   ir/ir/irvrfy.c
+ * Purpose:     Check irnodes for correctness.
+ * Author:      Christian Schaefer
+ * Modified by: Goetz Lindenmaier. Till Riedel
+ * Created:
+ * CVS-ID:      $Id$
+ * Copyright:   (c) 1998-2003 Universität Karlsruhe
+ * Licence:     This file protected by GPL -  GNU GENERAL PUBLIC LICENSE.
+ */
 
 #ifdef HAVE_CONFIG_H
-# include <config.h>
+# include "config.h"
 #endif
 
+# include "irprog.h"
 # include "irgraph_t.h"
 # include "irvrfy.h"
 # include "irgwalk.h"
+# include "irdump.h"
+
+#ifdef NDEBUG
+/*
+ * in RELEASE mode, returns ret if the expression expr evaluates to zero
+ * in ASSERT mode, asserts the expression expr (and the string string).
+ */
+#define ASSERT_AND_RET(expr, string, ret)       if (!(expr)) return (ret)
+
+/*
+ * in RELEASE mode, returns ret if the expression expr evaluates to zero
+ * in ASSERT mode, executes blk if the expression expr evaluates to zero and asserts expr
+ */
+#define ASSERT_AND_RET_DBG(expr, string, ret, blk)      if (!(expr)) return (ret)
+#else
+#define ASSERT_AND_RET(expr, string, ret) \
+do { \
+  if (opt_do_node_verification == NODE_VERIFICATION_ON) {\
+    if (!(expr) && current_ir_graph != get_const_code_irg()) \
+    dump_ir_block_graph(current_ir_graph, "-assert"); \
+    assert((expr) && string); } \
+  if (!(expr)) { \
+    if (opt_do_node_verification == NODE_VERIFICATION_REPORT) \
+      fprintf(stderr, #expr " : " string "\n"); \
+    bad_msg = #expr " && " string; \
+    return (ret); \
+  } \
+} while(0)
+
+#define ASSERT_AND_RET_DBG(expr, string, ret, blk) \
+do { \
+  if (!(expr)) { \
+    bad_msg = #expr " && " string; \
+    if (opt_do_node_verification != NODE_VERIFICATION_ERROR_ONLY) { blk; } \
+    if (opt_do_node_verification == NODE_VERIFICATION_REPORT) \
+      fprintf(stderr, #expr " : " string "\n"); \
+    else if (opt_do_node_verification == NODE_VERIFICATION_ON) \
+      assert((expr) && string); \
+    return (ret); \
+  } \
+} while(0)
+
+#endif
+
+/** if this flag is set, verify entity types in Load & Store nodes */
+static int vrfy_entities = 0;
+
+/* @@@ replace use of array "in" by access functions. */
+ir_node **get_irn_in(ir_node *node);
+
+static node_verification_t opt_do_node_verification = NODE_VERIFICATION_ON;
+static const char *bad_msg;
+
+/* enable verification of Load/Store entities */
+void vrfy_enable_entity_tests(int enable)
+{
+  vrfy_entities = enable;
+}
+
+/**
+ * little helper for NULL modes
+ */
+static const char *get_mode_name_ex(ir_mode *mode)
+{
+  if (! mode)
+    return "<no mode>";
+  return get_mode_name(mode);
+}
+
+void do_node_verification(node_verification_t mode)
+{
+  opt_do_node_verification = mode;
+}
 
-void vrfy_Proj_proj(ir_node *p);
+/**
+ * Prints a failure for a Node
+ */
+static void show_node_failure(ir_node *n)
+{
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() of node %ld %s%s\n" ,
+    get_irn_node_nr(n),
+    get_irn_opname(n), get_irn_modename(n)
+  );
+}
+
+/**
+ * Prints a failure message for a binop
+ */
+static void show_binop_failure(ir_node *n, const char *text)
+{
+  ir_node *left  = get_binop_left(n);
+  ir_node *right = get_binop_right(n);
+
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() of node %ld %s%s(%s%s, %s%s) did not match (%s)\n",
+      get_irn_node_nr(n),
+      get_irn_opname(n), get_irn_modename(n),
+      get_irn_opname(left), get_irn_modename(left),
+      get_irn_opname(right), get_irn_modename(right),
+      text);
+}
+
+/**
+ * Prints a failure message for an unop
+ */
+static void show_unop_failure(ir_node *n, const char *text)
+{
+  ir_node *op  = get_unop_op(n);
+
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() of node %ld %s%s(%s%s) did not match (%s)\n",
+      get_irn_node_nr(n),
+      get_irn_opname(n), get_irn_modename(n),
+      get_irn_opname(op), get_irn_modename(op),
+      text);
+}
+
+/**
+ * Prints a failure message for a proj
+ */
+static void show_proj_failure(ir_node *n)
+{
+  ir_node *op  = get_Proj_pred(n);
+  int proj     = get_Proj_proj(n);
+
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() of node %ld %s%s %d(%s%s) failed\n" ,
+      get_irn_node_nr(n),
+      get_irn_opname(n), get_irn_modename(n), proj,
+      get_irn_opname(op), get_irn_modename(op));
+}
+
+/**
+ * Prints a failure message for a proj
+ */
+static void show_proj_failure_ent(ir_node *n, entity *ent)
+{
+  ir_node *op  = get_Proj_pred(n);
+  int proj     = get_Proj_proj(n);
+  ir_mode *m   = get_type_mode(get_entity_type(ent));
+
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() of node %ld %s%s %d(%s%s) entity %s(type %s mode %s)failed\n" ,
+      get_irn_node_nr(n),
+      get_irn_opname(n), get_irn_modename(n), proj,
+      get_irn_opname(op), get_irn_modename(op),
+      get_entity_name(ent), get_type_name(get_entity_type(ent)),
+      get_mode_name_ex(m));
+}
 
-void
-irn_vrfy (ir_node *n)
+/**
+ * Show a node and a graph
+ */
+static void show_node_on_graph(ir_graph *irg, ir_node *n)
+{
+  entity *ent = get_irg_entity(irg);
+
+  if (ent)
+    fprintf(stderr, "\nFIRM: irn_vrfy_irg() of entity %s, node %ld %s%s\n",
+      get_entity_name(ent),
+      get_irn_node_nr(n), get_irn_opname(n), get_irn_modename(n));
+  else
+    fprintf(stderr, "\nFIRM: irn_vrfy_irg() of graph %p, node %ld %s%s\n",
+      (void *)irg,
+      get_irn_node_nr(n), get_irn_opname(n), get_irn_modename(n));
+}
+
+/**
+ * Show call params
+ */
+static void show_call_param(ir_node *n, type *mt)
 {
   int i;
-  int opcode;
-  ir_mode *mymode, *op1mode, *op2mode, *op3mode;
-  int op_is_symmetric = 1;	/* 0: asymmetric
-				   1: operands have identical modes
-  				   2: modes of operands == mode of this node */
-  type *mt; /* A method type */
 
-  ir_node **in;
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() Call type-check failed: %s(", get_type_name(mt));
+  for (i = 0; i < get_method_n_params(mt); ++i) {
+    fprintf(stderr, "%s ", get_mode_name_ex(get_type_mode(get_method_param_type(mt, i))));
+  }
+  fprintf(stderr, ") != CALL(");
 
-  opcode = get_irn_opcode (n);
+  for (i = 0; i < get_Call_n_params(n); ++i) {
+    fprintf(stderr, "%s ", get_mode_name_ex(get_irn_mode(get_Call_param(n, i))));
+  }
+  fprintf(stderr, ")\n");
 
-  if (opcode != iro_Phi && opcode != iro_Block)
-    for (i = 0; i < get_irn_arity(n); i++)
-      if (get_irn_opcode(get_irn_n(n, i)) == iro_Bad
-	  || get_irn_opcode(get_irn_n(n, i)) == iro_Unknown)
-	return;
+}
 
-  mymode = get_irn_mode (n);
-  in = get_irn_in (n);
+/**
+ * Show return modes
+ */
+static void show_return_modes(ir_graph *irg, ir_node *n, type *mt, int i)
+{
+  entity *ent = get_irg_entity(irg);
 
-  switch (opcode) {
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() Return node %ld in entity \"%s\" mode %s different from type mode %s\n",
+    get_irn_node_nr(n), get_entity_name(ent),
+    get_mode_name_ex(get_irn_mode(get_Return_res(n, i))),
+    get_mode_name_ex(get_type_mode(get_method_res_type(mt, i)))
+  );
+}
 
-  case iro_Start:
-    assert (
-	    /* Start: BB --> X x M x P x data1 x ... x datan */
-	    mymode == mode_T && "Start node"
-	   );
-    break;
-  case iro_Jmp:
-    assert (
-	    /* Jmp: BB --> X */
-	    mymode == mode_X && "Jmp node"
-	   );
-    break;
-  case iro_Cond:
-    op1mode = get_irn_mode(in[1]);
-    assert (
-	    /* Cond: BB x b --> X x X */
-	    (op1mode == mode_b
-	    /* Cond: BB x Iu --> X^n */
-	    || op1mode == mode_I) && "Cond node"
-           );
-    assert (mymode == mode_T);
-    break;
-  case iro_Return:
-    op1mode = get_irn_mode(in[1]);
-    /* Return: BB x M x data1 x ... x datan --> X */
-    /* printf("mode: %s, code %s\n", ID_TO_STR(n->mode->name), ID_TO_STR(n->op->name));*/
-    assert ( op1mode == mode_M  && "Return node" );  /* operand M */
-    for (i=2; i < get_irn_arity(n); i++) {
-      assert ( mode_is_data(get_irn_mode(in[i]))  && "Return node");  /* operand datai */
-    };
-    assert ( mymode == mode_X );   /* result X */
-    /* Compare returned results with result types of method type */
-    mt = get_entity_type(get_irg_ent(current_ir_graph));
-    assert(get_Return_n_res(n) == get_method_n_res(mt) &&
-	     "Number of results for Return doesn't match number of results in type.");
-    for (i = 0; i < get_Return_n_res(n); i++)
-      assert((get_irn_mode(get_Return_res(n, i))
-	      == get_type_mode(get_method_res_type(mt, i))) &&
-	     "Mode of result for Return doesn't match mode of result type.");
-
-    break;
-  case iro_Raise:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert (
-	    /* Sel: BB x M x P --> X x M */
-	    op1mode == mode_M && op2mode == mode_p
-	    && mymode == mode_T && "Raise node"
-	   );
-    break;
-  case iro_Const:
-    assert (
-	    /* Const: BB --> data */
-	    (mode_is_data (mymode) ||
-	     mymode == mode_b)      /* we want boolean constants for static evaluation */
-             && "Const node"        /* of Cmp. */
-	   );
-    break;
-  case iro_SymConst:
-    assert (
-	    /* SymConst: BB --> Iu or
-                         BB --> P */
-	    ((mymode == mode_I) || (mymode == mode_p))  && "SymConst node"
-	   );
-    break;
-  case iro_Sel:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert (
-	    /* Sel: BB x M x P x Iu^n --> P */
-	    op1mode == mode_M && op2mode == mode_p
-            && mymode == mode_p && "Sel node"
-	   );
-    for (i=3; i < get_irn_arity(n); i++) {
-	    assert (get_irn_mode(in[i]) == mode_I && "Sel node"); }
-    break;
-  case iro_InstOf:
-	assert (mode_T == mymode);
-	assert (mode_is_data (op1mode));
-	break;
-  case iro_Call:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-      /* Call: BB x M x P x data1 x ... x datan
-                 --> M x datan+1 x ... x data n+m */
-    assert ( op1mode == mode_M && op2mode == mode_p  && "Call node");  /* operand M x P */
-    for (i=3; i < get_irn_arity(n); i++) {
-      assert ( mode_is_data(get_irn_mode(in[i])) && "Call node");  /* operand datai */
-    };
-    assert ( mymode == mode_T );   /* result T */
-    /* Compare arguments of node with those of type */
-      mt = get_Call_type(n);
-      assert(get_Call_n_params(n) == get_method_n_params(mt) &&
-	     "Number of args for Call doesn't match number of args in type.");
-      for (i = 0; i < get_Call_n_params(n); i++)
-	assert((get_irn_mode(get_Call_param(n, i))
-		== get_type_mode(get_method_param_type(mt, i))) &&
-	       "Mode of arg for Call doesn't match mode of arg type.");
-    break;
-  case iro_Add:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert (
-	    /* common Add: BB x num x num --> num */
-	    ((mymode == op1mode && mymode == op2mode
-	      && mode_is_num(mymode))
-	     ||  /* Pointer Add: BB x P x Is --> P */
-	     (op1mode == mode_p && op2mode == mode_i && mymode == mode_p)
-	     ||  /* Pointer Add: BB x Is x P --> P */
-	     (op1mode == mode_i && op2mode == mode_p && mymode == mode_p))
-	    && "Add node"
-           );
-      if (op1mode == mode_p || op2mode == mode_p) {
-	/* BB x P x Is --> P or BB x Is x P --> P */
-        op_is_symmetric = 0; /* ArmRoq */
-      } else {
-	/* BB x num x num --> num */
-        op_is_symmetric = 2;
-      }
-    break;
-  case iro_Sub:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert (
-	    /* common Sub: BB x num x num --> num */
-	    ((mymode ==op1mode && mymode == op2mode
-	      && mode_is_num(op1mode))
-	     ||  /* Pointer Sub: BB x P x Is --> P */
-	     (op1mode == mode_p && op2mode == mode_i && mymode == mode_p)
-	     ||  /* Pointer Sub: BB x Is x P --> P */
-	     (op1mode == mode_i && op2mode == mode_p && mymode == mode_p)
-	     ||  /* Pointer Sub: BB x P x P --> Is */
-	     (op1mode == mode_p && op2mode == mode_p && mymode == mode_i))
-	    && "Sub node"
-           );
-      if (op1mode == mode_p && op2mode == mode_p) {
-        op_is_symmetric = 1; /* ArmRoq */
-      } else if (op1mode == mode_p || op2mode == mode_p) {
-        op_is_symmetric = 0; /* ArmRoq */
-      } else {
-        op_is_symmetric = 2;
-      }
-    break;
-  case iro_Minus:
-    op1mode = get_irn_mode(in[1]);
-    assert (
-	    /* Minus: BB x float --> float */
-	    op1mode == mymode && mode_is_float (op1mode)  && "Minus node"
-	   );
-    op_is_symmetric = 2;
-    break;
-  case iro_Mul:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert (
-	    /* Mul: BB x num x num --> num */
-	    mymode == op1mode && mymode == op2mode
-	    && mode_is_num (op1mode) && "Mul node"
-	   );
-    op_is_symmetric = 2;
-    break;
-  case iro_Quot:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    op3mode = get_irn_mode(in[3]);
-    assert (
-	    /* Quot: BB x M x float x float --> M x X x float */
-	    op1mode == mode_M && op2mode == op3mode
-	    && mode_is_float(op2mode) && mymode == mode_T && "Quot node"
-	   );
-    op_is_symmetric = 2;
-    break;
-  case iro_DivMod:;
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    op3mode = get_irn_mode(in[3]);
-    assert (
-	    /* DivMod: BB x M x num x num --> M x X x Is x Is */
-	    op1mode == mode_M && op2mode == op3mode
-	    && mode_is_num (op2mode) && mymode == mode_T && "DivMod node"
-           );
-    op_is_symmetric = 1;
-    break;
-  case iro_Div:
-  case iro_Mod:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    op3mode = get_irn_mode(in[3]);
-    assert (
-	    /* Div or Mod: BB x M x num x num --> M x X x Is */
-	    op1mode == mode_M && op2mode == op3mode &&
-	    mode_is_num (op2mode) && mymode == mode_T && "Div or Mod node"
-           );
-    op_is_symmetric = 1;
-    break;
-  case iro_Abs:
-    op1mode = get_irn_mode(in[1]);
-    assert (
-	    /* Abs: BB x num --> num */
-	    op1mode == mymode && mode_is_num (op1mode) && "Abs node"
-	   );
-    op_is_symmetric = 2;
-    break;
-  case iro_And:
-  case iro_Or:
-  case iro_Eor:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert(
-	   /* And or Or or Eor: BB x int x int --> int */
-	   mymode == op1mode && mymode == op2mode
-	   && mode_is_int (mymode) && "And, Or or Eor node"
-	  );
-    op_is_symmetric = 2;
-    break;
-  case iro_Not:
-    op1mode = get_irn_mode(in[1]);
-    assert(
-	   /* Not: BB x int --> int */
-	   mymode == op1mode
-	   && mode_is_int (mymode) && "Not node"
-	  );
-    op_is_symmetric = 2;
-    break;
-
-  case iro_Cmp:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert(
-	   /* Cmp: BB x datab x datab --> b16 */
-           op1mode == op2mode && mode_is_data (op1mode)
-           && mymode == mode_T && "Cmp node"
-	  );
-    break;
-  case iro_Shl:
-  case iro_Shr:
-  case iro_Shrs:
-  case iro_Rot:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert(
-	   /* Shl, Shr, Shrs or Rot: BB x int x Iu --> int */
-	   mode_is_int (op1mode) && op2mode == mode_I
-           && op1mode == mymode && "Shl, Shr, Shr or Rot node"
-	  );
-    break;
-  case iro_Conv:
-    op1mode = get_irn_mode(in[1]);
-    assert(
-           /* Conv: BB x datab1 --> datab2 */
-	   mode_is_datab (op1mode)
-           && mode_is_data (mymode) && "Conv node"
-	  );
-    break;
-  case iro_Phi:
-    /* Phi: BB x dataM^n --> dataM */
-    /* for some reason "<=" aborts. Is there a problem with get_store? */
-    for (i=1; i < get_irn_arity(n); i++) {
-      if (!is_Bad(in[i]))
-	assert ( get_irn_mode(in[i]) == mymode  && "Phi node");
-    };
-    assert ( mode_is_dataM(mymode)  && "Phi node");
-    break;
-  case iro_Load:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert(
-           /* Load: BB x M x P --> M x X x data */
-           op1mode == mode_M && op2mode == mode_p  && "Load node"
-	  );
-    assert ( mymode == mode_T  && "Load node");
-    break;
-  case iro_Store:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    op3mode = get_irn_mode(in[3]);
-    assert(
-           /* Load: BB x M x P x data --> M x X */
-           op1mode == mode_M && op2mode == mode_p
-           && mode_is_data (op3mode) && "Store node"
-	  );
-    assert(mymode == mode_T && "Store node");
-    break;
-  case iro_Alloc:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    assert(
-           /* Alloc: BB x M x Iu --> M x X x P */
-           op1mode == mode_M && op2mode == mode_I
-           && mymode == mode_T && "Alloc node"
-	  );
-    break;
-  case iro_Free:
-    op1mode = get_irn_mode(in[1]);
-    op2mode = get_irn_mode(in[2]);
-    op3mode = get_irn_mode(in[3]);
-    assert(
-           /* Free: BB x M x P x Iu --> M */
-           op1mode == mode_M && op2mode == mode_p && op3mode == mode_I
-           && mymode == mode_M && "Free node"
-	  );
-    break;
-  case iro_Sync:
-           /* Sync: BB x M^n --> M */
-    for (i=1; i < get_irn_arity(n); i++) {
-      assert ( get_irn_mode(in[i]) == mode_M  && "Sync node");
-    };
-    assert ( mymode == mode_M  && "Sync node");
-    break;
-  case iro_Proj:
-    vrfy_Proj_proj(n);
-    break;
-  default: ;
+/**
+ * Show return number of results
+ */
+static void show_return_nres(ir_graph *irg, ir_node *n, type *mt)
+{
+  entity *ent = get_irg_entity(irg);
+
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() Return node %ld in entity \"%s\" has %d results different from type %d\n",
+    get_irn_node_nr(n), get_entity_name(ent),
+    get_Return_n_ress(n), get_method_n_ress(mt));
+}
+
+/**
+ * Show Phi input
+ */
+static void show_phi_failure(ir_node *phi, ir_node *pred, int pos)
+{
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() Phi node %ld has mode %s different from predeccessor node %ld mode %s\n",
+    get_irn_node_nr(phi), get_mode_name_ex(get_irn_mode(phi)),
+    get_irn_node_nr(pred), get_mode_name_ex(get_irn_mode(pred)));
+}
+
+/**
+ * Show Phi inputs
+ */
+static void show_phi_inputs(ir_node *phi, ir_node *block)
+{
+  fprintf(stderr, "\nFIRM: irn_vrfy_irg() Phi node %ld has %d inputs, its Block %ld has %d\n",
+    get_irn_node_nr(phi),   get_irn_arity(phi),
+    get_irn_node_nr(block), get_irn_arity(block));
+}
+
+/* If the address is Sel or SymConst, return the entity. */
+static entity *get_ptr_entity(ir_node *ptr) {
+  if (get_irn_op(ptr) == op_Sel) {
+    return get_Sel_entity(ptr);
+  } else if ((get_irn_op(ptr) == op_SymConst) && (get_SymConst_kind(ptr) == symconst_addr_ent)) {
+    return get_SymConst_entity(ptr);
   }
+  return NULL;
 }
 
-void
-vrfy_Proj_proj(ir_node *p) {
+/**
+ * verify the Proj number
+ */
+static int
+vrfy_Proj_proj(ir_node *p, ir_graph *irg) {
   ir_node *pred;
   ir_mode *mode;
   int proj;
 
-  pred = skip_nop(get_Proj_pred(p));
-  assert(get_irn_mode(pred) == mode_T);
+  pred = skip_Id(get_Proj_pred(p));
+  ASSERT_AND_RET(get_irn_mode(pred) == mode_T, "mode of a 'projed' node is not Tuple", 0);
   mode = get_irn_mode(p);
   proj = get_Proj_proj(p);
 
   switch (get_irn_opcode(pred)) {
-  case iro_Start:
-    assert ((proj == 0 && mode == mode_X) ||
-	    (proj == 1 && mode == mode_M) ||
-	    (proj == 2 && mode == mode_p) ||
-	    (proj == 3 && mode == mode_p) ||
-	    (proj == 4 && mode == mode_T) &&
-	    "wrong Proj from Start"  );
-    break;
-  case iro_Cond:
-    assert ((proj >= 0 && mode == mode_X) &&
-	    "wrong Proj from Cond");
-    break;
-  case iro_Raise:
-    assert ((proj == 0 && mode == mode_X) ||
-	    (proj == 1 && mode == mode_M) &&
-	    "wrong Proj from Raise" );
-    break;
-  case iro_InstOf:
-	assert (((proj >= 0 && mode == mode_X) &&
-			 "wrong Proj from InstOf"));
-	break;
-  case iro_Call:
-    assert ((proj == 0 && mode == mode_M) ||
-	    (proj == 1 && mode == mode_X) ||
-	    (proj == 2 && mode == mode_T) ||
-	    (proj == 3 && mode == mode_M) &&
-	    "wrong Proj from Call" );
-    break;
-  case iro_Quot:
-    assert ((proj == 0 && mode == mode_M) ||
-	    (proj == 1 && mode == mode_X) ||
-	    (proj == 2 && mode_is_float(mode)) &&
-	    "wrong Proj from Quot");
-    break;
-  case iro_DivMod:
-    assert ((proj == 0 && mode == mode_M) ||
-	    (proj == 1 && mode == mode_X) ||
-	    (proj == 2 && mode == mode_i) ||
-	    (proj == 3 && mode == mode_i) &&
-	    "wrong Proj from DivMod" );
-    break;
-  case iro_Div:
-  case iro_Mod:
-    assert ((proj == 0 && mode == mode_M) ||
-	    (proj == 1 && mode == mode_X) ||
-	    (proj == 2 && mode == mode_i) &&
-	    "wrong Proj from Div or Mod" );
-    break;
-  case iro_Cmp:
-    assert ((proj >= 0 && proj <= 15 && mode == mode_b) &&
-	    "wrong Proj from Cmp");
-    break;
-  case iro_Load:
-    assert ((proj == 0 && mode == mode_M) ||
-	    (proj == 1 && mode == mode_X) ||
-	    (proj == 2 && mode_is_data(mode)) &&
-	    "wrong Proj from Load");
-    break;
-  case iro_Store:
-    assert ((proj == 0 && mode == mode_M) ||
-	    (proj == 1 && mode == mode_X) &&
-	    "wrong Proj from Store");
-    break;
-  case iro_Alloc:
-    assert ((proj == 0 && mode == mode_M) ||
-	    (proj == 1 /* && mode == mode_X*/) ||
-	    (proj == 2 && mode == mode_p) &&
-	    "wrong Proj from Alloc");
-    break;
-  case iro_Proj: {
-    type *mt; /* A method type */
-    pred = skip_nop(get_Proj_pred(pred));
-    assert(get_irn_mode(pred) == mode_T);
-    switch (get_irn_opcode(pred)) {
-    case iro_Start: {
-      assert (proj >= 0 && mode_is_data(mode) &&
-	      "wrong Proj from Proj from Start");
-      mt = get_entity_type(get_irg_ent(current_ir_graph));
-      assert(proj < get_method_n_params(mt) &&
-	     "More Projs for args than args in type");
-      assert(mode == get_type_mode(get_method_param_type(mt, proj)) &&
-      "Mode of Proj from Start doesn't match mode of param type.");
-    } break;
-    case iro_Call: {
-      assert (proj >= 0 && mode_is_data(mode) &&
-	      "wrong Proj from Proj from Call");
-      mt = get_Call_type(pred);
-      assert(proj < get_method_n_res(mt) &&
-	     "More Projs for results than results in type.");
-      assert(mode == get_type_mode(get_method_res_type(mt, proj)) &&
-      "Mode of Proj from Call doesn't match mode of result type.");
-    } break;
-    case iro_Tuple: ;
+    case iro_Start:
+      ASSERT_AND_RET_DBG(
+          (
+           (proj == pn_Start_X_initial_exec && mode == mode_X) ||
+           (proj == pn_Start_M         && mode == mode_M) ||
+           (proj == pn_Start_P_frame_base && mode_is_reference(mode)) ||
+           (proj == pn_Start_P_globals && mode_is_reference(mode)) ||
+           (proj == pn_Start_T_args    && mode == mode_T) ||
+           (proj == pn_Start_P_value_arg_base && mode_is_reference(mode)) ||
+           (proj == pn_Start_P_value_arg_base && mode == mode_T)    /* FIXME: only one of those */
+          ),
+          "wrong Proj from Start", 0,
+      show_proj_failure(p);
+      );
+      break;
+
+    case iro_Cond:
+      ASSERT_AND_RET_DBG(
+        (
+          (proj >= 0 && mode == mode_X && get_irn_mode(get_Cond_selector(pred)) == mode_b) ||   /* compare */
+          (mode == mode_X && mode_is_int(get_irn_mode(get_Cond_selector(pred))))                /* switch */
+        ),
+        "wrong Proj from Cond", 0,
+        show_proj_failure(p);
+      );
+      break;
+
+    case iro_Raise:
+      ASSERT_AND_RET_DBG(
+        ((proj == pn_Raise_X && mode == mode_X) || (proj == pn_Raise_M && mode == mode_M)),
+        "wrong Proj from Raise", 0,
+    show_proj_failure(p);
+      );
+      break;
+
+    case iro_InstOf:
+      ASSERT_AND_RET_DBG(
+    (proj >= 0 && mode == mode_X),
+    "wrong Proj from InstOf", 0,
+    show_proj_failure(p);
+      );
+      break;
+
+    case iro_Call:
+      ASSERT_AND_RET_DBG(
+        ((proj == pn_Call_M_regular        && mode == mode_M) ||
+         (proj == pn_Call_X_except         && mode == mode_X) ||
+         (proj == pn_Call_T_result         && mode == mode_T) ||
+         (proj == pn_Call_M_except         && mode == mode_M) ||
+     (proj == pn_Call_P_value_res_base && mode == mode_P)),
+        "wrong Proj from Call", 0,
+        show_proj_failure(p);
+      );
+
+      break;
+
+    case iro_Quot:
+      ASSERT_AND_RET_DBG(
+        ((proj == pn_Quot_M        && mode == mode_M) ||
+         (proj == pn_Quot_X_except && mode == mode_X) ||
+         (proj == pn_Quot_res      && mode_is_float(mode))),
+        "wrong Proj from Quot", 0,
+    show_proj_failure(p);
+      );
+      break;
+
+    case iro_DivMod:
+      ASSERT_AND_RET_DBG(
+        ((proj == pn_DivMod_M        && mode == mode_M) ||
+         (proj == pn_DivMod_X_except && mode == mode_X) ||
+         (proj == pn_DivMod_res_div  && mode_is_int(mode)) ||
+         (proj == pn_DivMod_res_mod  && mode_is_int(mode))),
+        "wrong Proj from DivMod", 0,
+    show_proj_failure(p);
+      );
+      break;
+
+    case iro_Div:
+      ASSERT_AND_RET_DBG(
+        ((proj == pn_Div_M        && mode == mode_M) ||
+         (proj == pn_Div_X_except && mode == mode_X) ||
+         (proj == pn_Div_res      && mode_is_int(mode))),
+        "wrong Proj from Div or Mod", 0,
+        show_proj_failure(p);
+      );
+      break;
+
+    case iro_Mod:
+      ASSERT_AND_RET_DBG(
+        ((proj == pn_Mod_M        && mode == mode_M) ||
+         (proj == pn_Mod_X_except && mode == mode_X) ||
+         (proj == pn_Mod_res      && mode_is_int(mode))),
+        "wrong Proj from Div or Mod", 0,
+    show_proj_failure(p);
+      );
+      break;
+
+    case iro_Cmp:
+      ASSERT_AND_RET_DBG(
+        (proj >= 0 && proj <= 15 && mode == mode_b),
+        "wrong Proj from Cmp", 0,
+    show_proj_failure(p);
+      );
+      break;
+
+    case iro_Load:
+      if (proj == pn_Load_res) {
+        ir_node *ptr = get_Load_ptr(pred);
+        entity *ent = get_ptr_entity(ptr);
+
+        if (vrfy_entities && ent && get_irg_phase_state(current_ir_graph) == phase_high) {
+          /* do NOT check this for lowered phases, see comment on Store */
+          ASSERT_AND_RET_DBG(
+                             (mode == get_type_mode(get_entity_type(ent))),
+                             "wrong data Proj from Load, entity type_mode failed", 0,
+                             show_proj_failure_ent(p, ent);
+                             );
+        }
+        else {
+          ASSERT_AND_RET_DBG(
+                             mode_is_data(mode) && mode == get_Load_mode(pred),
+                             "wrong data Proj from Load", 0,
+                             show_proj_failure(p);
+                             );
+        }
+      } else {
+        ASSERT_AND_RET_DBG(
+                           ((proj == pn_Load_M        && mode == mode_M) ||
+                            (proj == pn_Load_X_except && mode == mode_X)),
+                           "wrong Proj from Load", 0,
+                           show_proj_failure(p);
+                           );
+      }
+      break;
+
+    case iro_Store:
+      ASSERT_AND_RET_DBG(
+        ((proj == pn_Store_M        && mode == mode_M) ||
+         (proj == pn_Store_X_except && mode == mode_X)),
+        "wrong Proj from Store", 0,
+        show_proj_failure(p);
+      );
+      break;
+
+    case iro_Alloc:
+      ASSERT_AND_RET_DBG(
+        (
+         (proj == pn_Alloc_M        && mode == mode_M) ||
+         (proj == pn_Alloc_X_except /* && mode == mode_X*/) ||
+         (proj == pn_Alloc_res      && mode_is_reference(mode))
+        ),
+        "wrong Proj from Alloc", 0,
+        show_proj_failure(p);
+      );
+      break;
+
+    case iro_Proj:
+      {
+        type *mt; /* A method type */
+        long nr = get_Proj_proj(pred);
+
+        pred = skip_Id(get_Proj_pred(pred));
+        ASSERT_AND_RET((get_irn_mode(pred) == mode_T), "Proj from something not a tuple", 0);
+        switch (get_irn_opcode(pred))
+        {
+          case iro_Start:
+            mt = get_entity_type(get_irg_entity(irg));
+
+            if (nr == pn_Start_T_args) {
+                  ASSERT_AND_RET(
+                      (proj >= 0 && mode_is_data(mode)),
+                      "wrong Proj from Proj from Start", 0);
+                  ASSERT_AND_RET(
+                    (proj < get_method_n_params(mt)),
+                    "More Projs for args than args in type", 0
+                  );
+                  if ((mode_is_reference(mode)) && is_compound_type(get_method_param_type(mt, proj)))
+                    /* value argument */ break;
+
+                  ASSERT_AND_RET(
+                      (mode == get_type_mode(get_method_param_type(mt, proj))),
+                      "Mode of Proj from Start doesn't match mode of param type.", 0);
+                }
+            else if (nr == pn_Start_P_value_arg_base) {
+              ASSERT_AND_RET(
+                      (proj >= 0 && mode_is_reference(mode)),
+                      "wrong Proj from Proj from Start", 0
+                  );
+                  ASSERT_AND_RET(
+                    (proj < get_method_n_params(mt)),
+                    "More Projs for args than args in type", 0
+                  );
+            }
+            break;
+
+          case iro_Call:
+            {
+              ASSERT_AND_RET(
+                  (proj >= 0 && mode_is_data(mode)),
+                  "wrong Proj from Proj from Call", 0);
+              mt = get_Call_type(pred);
+              ASSERT_AND_RET(
+                  (proj < get_method_n_ress(mt)),
+                  "More Projs for results than results in type.", 0);
+              if ((mode_is_reference(mode)) && is_compound_type(get_method_res_type(mt, proj)))
+                /* value result */ break;
+
+              ASSERT_AND_RET(
+                  (mode == get_type_mode(get_method_res_type(mt, proj))),
+                  "Mode of Proj from Call doesn't match mode of result type.", 0);
+            }
+            break;
+
+          case iro_Tuple:
+            /* We don't test */
+            break;
+
+          case iro_Bad:
+            /* hmm, optimization did not remove it */
+            break;
+
+          default:
+            ASSERT_AND_RET(0, "Unknown opcode", 0);
+        }
+        break;
+
+      }
+    case iro_Tuple:
       /* We don't test */
       break;
-    default: assert(0);
-    } break;
+
+    case iro_CallBegin:
+      break;
+
+    case iro_EndReg:
+      break;
+
+    case iro_EndExcept:
+      break;
+
+    default:
+      ASSERT_AND_RET(0, "Unknown opcode", 0);
   }
-  case iro_Tuple:
-    /* We don't test */
-    break;
-  case iro_CallBegin:
-    break;
-  case iro_EndReg:
-    break;
-  case iro_EndExcept:
-    break;
-  default: assert(0);
+
+  /* all went ok */
+  return 1;
+}
+
+int irn_vrfy_irg(ir_node *n, ir_graph *irg)
+{
+  int i;
+  int opcode, opcode1;
+  ir_mode *mymode, *op1mode = NULL, *op2mode, *op3mode;
+  int op_is_symmetric = 1;  /*  0: asymmetric
+                                1: operands have identical modes
+                                2: modes of operands == mode of this node */
+  type *mt;                 /* A method type */
+  entity *ent;
+
+  ir_node **in;
+
+  if (!opt_do_node_verification) return 1;
+
+  if (! get_interprocedural_view()) {
+    /*
+     * do NOT check placement in interprocedural view, as we don't always know
+     * the "right" graph ...
+     */
+    ASSERT_AND_RET_DBG(
+                       node_is_in_irgs_storage(irg, n),
+                       "Node is not stored on proper IR graph!", 0,
+                       show_node_on_graph(irg, n);
+                       );
   }
+
+  opcode = get_irn_opcode(n);
+
+  /* We don't want to test nodes whose predecessors are Bad,
+     as we would have to special case that for each operation. */
+  if (opcode != iro_Phi && opcode != iro_Block)
+    for (i = 0; i < get_irn_arity(n); i++) {
+      opcode1 = get_irn_opcode(get_irn_n(n, i));
+      if (opcode1 == iro_Bad)
+        return 1;
+    }
+
+  mymode = get_irn_mode(n);
+  in = get_irn_in(n);
+
+  switch (opcode) {
+
+    case iro_Block:
+      for (i = 0; i < get_Block_n_cfgpreds(n); ++i) {
+        ir_node *pred =  get_Block_cfgpred(n, i);
+        ASSERT_AND_RET(
+                       (is_Bad(pred)     ||
+                        is_Unknown(pred) ||
+                        (get_irn_mode(pred) == mode_X)
+                        ), "Block node", 0);
+      }
+      /*  End block may only have Return, Raise or fragile ops as preds. */
+      if (n == get_irg_end_block(irg))
+        for (i = 0; i < get_Block_n_cfgpreds(n); ++i) {
+          ir_node *pred =  skip_Proj(get_Block_cfgpred(n, i));
+          if (is_Proj(pred) || get_irn_op(pred) == op_Tuple)
+            break;   /*  We can not test properly.  How many tuples are there? */
+          ASSERT_AND_RET(((get_irn_op(pred) == op_Return) ||
+                          is_Bad(pred)                    ||
+                          (get_irn_op(pred) == op_Raise)  ||
+                          is_fragile_op(pred)               ),
+                         "End Block node", 0);
+        }
+      /*  irg attr must == graph we are in. */
+      if (! get_interprocedural_view()) {
+        ASSERT_AND_RET(((get_irn_irg(n) && get_irn_irg(n) == irg)), "Block node has wrong irg attribute", 0);
+      }
+
+      break;
+
+    case iro_Start:
+      ASSERT_AND_RET(
+                     /* Start: BB --> X x M x ref x data1 x ... x datan x ref */
+                     mymode == mode_T, "Start node", 0
+                     );
+      break;
+
+    case iro_Jmp:
+      ASSERT_AND_RET(
+                     /* Jmp: BB --> X */
+                     mymode == mode_X, "Jmp node", 0
+                     );
+      break;
+
+    case iro_Break:
+      ASSERT_AND_RET(
+                     /* Jmp: BB --> X */
+                     mymode == mode_X, "Jmp node", 0
+                     );
+      break;
+
+    case iro_Cond:
+      op1mode = get_irn_mode(in[1]);
+      ASSERT_AND_RET(
+                     /* Cond: BB x b --> X x X */
+                     (op1mode == mode_b ||
+                      /* Cond: BB x int --> X^n */
+                      mode_is_int(op1mode) ),  "Cond node", 0
+                     );
+      ASSERT_AND_RET(mymode == mode_T, "Cond mode is not a tuple", 0);
+      break;
+
+    case iro_Return:
+      op1mode = get_irn_mode(in[1]);
+      /* Return: BB x M x data1 x ... x datan --> X */
+      /* printf("mode: %s, code %s\n", ID_TO_STR(n->mode->name), ID_TO_STR(n->op->name));*/
+      ASSERT_AND_RET( op1mode == mode_M, "Return node", 0 );  /* operand M */
+      for (i = 2; i < get_irn_arity(n); i++) {
+        ASSERT_AND_RET( mode_is_data(get_irn_mode(in[i])), "Return node", 0 );  /* operand datai */
+      };
+      ASSERT_AND_RET( mymode == mode_X, "Result X", 0 );   /* result X */
+      /* Compare returned results with result types of method type */
+      mt = get_entity_type(get_irg_entity(irg));
+      ASSERT_AND_RET_DBG( get_Return_n_ress(n) == get_method_n_ress(mt),
+        "Number of results for Return doesn't match number of results in type.", 0,
+      show_return_nres(irg, n, mt););
+      for (i = 0; i < get_Return_n_ress(n); i++) {
+    type *res_type = get_method_res_type(mt, i);
+
+        if (is_atomic_type(res_type)) {
+      ASSERT_AND_RET_DBG(
+        get_irn_mode(get_Return_res(n, i)) == get_type_mode(res_type),
+        "Mode of result for Return doesn't match mode of result type.", 0,
+        show_return_modes(irg, n, mt, i);
+      );
+    }
+    else {
+      ASSERT_AND_RET_DBG(
+        mode_is_reference(get_irn_mode(get_Return_res(n, i))),
+        "Mode of result for Return doesn't match mode of result type.", 0,
+        show_return_modes(irg, n, mt, i);
+      );
+    }
+      }
+      break;
+
+    case iro_Raise:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET(
+                     /* Sel: BB x M x ref --> X x M */
+                     op1mode == mode_M && mode_is_reference(op2mode) &&
+                     mymode == mode_T, "Raise node", 0
+                     );
+      break;
+
+    case iro_Const: {
+      ASSERT_AND_RET(
+                     /* Const: BB --> data */
+                     (mode_is_data (mymode) ||
+                      mymode == mode_b)      /* we want boolean constants for static evaluation */
+                     ,"Const node", 0        /* of Cmp. */
+                     );
+      } break;
+    case iro_SymConst:
+      if (get_SymConst_kind(n) == symconst_addr_ent) {
+        entity *ent = get_SymConst_entity(n);
+        if (is_method_type(get_entity_type(ent)) &&
+            get_irn_irg(n) != get_const_code_irg()) {
+#if 1
+          ASSERT_AND_RET((get_entity_peculiarity(ent) != peculiarity_description),
+                         "A constant must address an existing method.", 0);
+#endif
+        }
+      }
+      ASSERT_AND_RET(
+                     /* SymConst: BB --> int*/
+                     (mode_is_int(mymode) ||
+                      /* SymConst: BB --> ref */
+                      mode_is_reference(mymode))
+                     ,"SymConst node", 0);
+      break;
+
+    case iro_Sel:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Sel: BB x M x ref x int^n --> ref */
+                         (op1mode == mode_M && op2mode == mymode && mode_is_reference(mymode)),
+                         "Sel node", 0, show_node_failure(n)
+                         );
+      for (i=3; i < get_irn_arity(n); i++)
+        {
+          ASSERT_AND_RET_DBG(mode_is_int(get_irn_mode(in[i])), "Sel node", 0, show_node_failure(n));
+        }
+      ent = get_Sel_entity(n);
+      ASSERT_AND_RET_DBG(ent, "Sel node with empty entity", 0, show_node_failure(n));
+      break;
+
+    case iro_InstOf:
+      ASSERT_AND_RET(mode_T == mymode, "mode of Instof is not a tuple", 0);
+      ASSERT_AND_RET(mode_is_data(op1mode), "Instof not on data", 0);
+      break;
+
+    case iro_Call:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      /* Call: BB x M x ref x data1 x ... x datan
+         --> M x datan+1 x ... x data n+m */
+      ASSERT_AND_RET( op1mode == mode_M && mode_is_reference(op2mode), "Call node", 0 );  /* operand M x ref */
+
+      mt = get_Call_type(n);
+      if(get_unknown_type() == mt) {
+        break;
+      }
+
+      for (i=3; i < get_irn_arity(n); i++) {
+        ASSERT_AND_RET( mode_is_data(get_irn_mode(in[i])), "Call node", 0 );  /* operand datai */
+      };
+      ASSERT_AND_RET( mymode == mode_T, "Call result not a tuple", 0 );   /* result T */
+      /* Compare arguments of node with those of type */
+
+      if (get_method_variadicity(mt) == variadicity_variadic) {
+        ASSERT_AND_RET_DBG(
+                           get_Call_n_params(n) >= get_method_n_params(mt),
+                           "Number of args for Call doesn't match number of args in variadic type.",
+                           0,
+                           fprintf(stderr, "Call has %d params, method %s type %d\n",
+                                   get_Call_n_params(n), get_type_name(mt), get_method_n_params(mt));
+                           );
+      }
+      else {
+        ASSERT_AND_RET(
+                       get_Call_n_params(n) == get_method_n_params(mt),
+                       "Number of args for Call doesn't match number of args in non variadic type.",
+                       0);
+      }
+
+      for (i = 0; i < get_method_n_params(mt); i++) {
+        type *t = get_method_param_type(mt, i);
+
+        if (is_atomic_type(t)) {
+          ASSERT_AND_RET_DBG(
+                             get_irn_mode(get_Call_param(n, i)) == get_type_mode(t),
+                             "Mode of arg for Call doesn't match mode of arg type.", 0,
+                             show_call_param(n, mt);
+                             );
+        }
+        else {
+          /* call with a compound type, mode must be reference */
+          ASSERT_AND_RET_DBG(
+                             mode_is_reference(get_irn_mode(get_Call_param(n, i))),
+                             "Mode of arg for Call doesn't match mode of arg type.", 0,
+                             show_call_param(n, mt);
+                             );
+        }
+      }
+
+#if 0
+      if (Call_has_callees(n)) {
+        for (i = 0; i < get_Call_n_callees(n); i++) {
+          ASSERT_AND_RET(is_entity(get_Call_callee(n, i)), "callee array must contain entities.", 0);
+        }
+      }
+#endif
+      break;
+
+    case iro_Add:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         (
+                          /* common Add: BB x numP x numP --> numP */
+                          (op1mode == mymode && op2mode == op1mode && mode_is_numP(mymode)) ||
+                          /* Pointer Add: BB x ref x int --> ref */
+                          (mode_is_reference(op1mode) && mode_is_int(op2mode) && op1mode == mymode) ||
+                          /* Pointer Add: BB x int x ref --> ref */
+                          (mode_is_int(op1mode) && op2mode == mymode && mode_is_reference(mymode))
+                          ),
+                         "Add node", 0,
+                         show_binop_failure(n, "/* common Add: BB x numP x numP --> numP */ |\n"
+                                            "/* Pointer Add: BB x ref x int --> ref */   |\n"
+                                            "/* Pointer Add: BB x int x ref --> ref */");
+                         );
+      if (mode_is_reference(op1mode) != mode_is_reference(op2mode)) {
+        /* BB x ref x int --> ref or BB x int x ref --> ref */
+        op_is_symmetric = 0;
+      } else {
+        /* BB x num x num --> num or BB x ref x ref */
+        op_is_symmetric = 2;
+      }
+      break;
+
+    case iro_Sub:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* common Sub: BB x numP x numP --> numP */
+                         ((mymode ==op1mode && mymode == op2mode && mode_is_numP(op1mode)) ||
+                          /* Pointer Sub: BB x ref x int --> ref */
+                          (op1mode == mymode && mode_is_int(op2mode) && mode_is_reference(mymode)) ||
+                          /* Pointer Sub: BB x int x ref --> ref */
+                          (mode_is_int(op1mode) && op2mode == mymode && mode_is_reference(mymode)) ||
+                          /* Pointer Sub: BB x ref x ref --> int */
+                          (op1mode == op2mode && mode_is_reference(op2mode) && mode_is_int(mymode))),
+                         "Sub node", 0,
+                         show_binop_failure(n, "/* common Sub: BB x numP x numP --> numP */ |\n"
+                                            "/* Pointer Sub: BB x ref x int --> ref */   |\n"
+                                            "/* Pointer Sub: BB x int x ref --> ref */   |\n"
+                                            "/* Pointer Sub: BB x ref x ref --> int */" );
+                         );
+      if (mode_is_reference(op1mode) != mode_is_reference(op2mode)) {
+        op_is_symmetric = 0;
+      } else {
+        op_is_symmetric = 2;
+      }
+      break;
+
+    case iro_Minus:
+      op1mode = get_irn_mode(in[1]);
+      ASSERT_AND_RET_DBG(
+                         /* Minus: BB x float --> float */
+                         op1mode == mymode && mode_is_float(op1mode), "Minus node", 0,
+                         show_unop_failure(n , "/* Minus: BB x float --> float */");
+                         );
+      op_is_symmetric = 2;
+      break;
+
+    case iro_Mul:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Mul: BB x int1 x int1 --> int2 */
+                         ((mode_is_int(op1mode)   && op2mode == op1mode && mode_is_int(mymode)) ||
+                         /* Mul: BB x float x float --> float */
+                          (mode_is_float(op1mode) && op2mode == op1mode && mymode == op1mode)),
+                         "Mul node",0,
+                         show_binop_failure(n, "/* Mul: BB x int1 x int1 --> int2 */ |\n"
+                                               "/* Mul: BB x float x float --> float */");
+                         );
+      op_is_symmetric = 2;
+      break;
+
+    case iro_Quot:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      op3mode = get_irn_mode(in[3]);
+      ASSERT_AND_RET_DBG(
+                         /* Quot: BB x M x float x float --> M x X x float */
+                         op1mode == mode_M && op2mode == op3mode &&
+                         get_mode_sort(op2mode) == irms_float_number &&
+                         mymode == mode_T,
+                         "Quot node",0,
+                         show_binop_failure(n, "/* Quot: BB x M x float x float --> M x X x float */");
+                         );
+      op_is_symmetric = 2;
+      break;
+
+    case iro_DivMod:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      op3mode = get_irn_mode(in[3]);
+      ASSERT_AND_RET(
+                     /* DivMod: BB x M x int x int --> M x X x int x int */
+                     op1mode == mode_M &&
+                     mode_is_int(op2mode) &&
+                     op3mode == op2mode &&
+                     mymode == mode_T,
+                     "DivMod node", 0
+                     );
+      op_is_symmetric = 1;
+      break;
+
+    case iro_Div:
+    case iro_Mod:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      op3mode = get_irn_mode(in[3]);
+      ASSERT_AND_RET(
+                     /* Div or Mod: BB x M x int x int --> M x X x int */
+                     op1mode == mode_M &&
+                     op2mode == op3mode &&
+                     mode_is_int(op2mode) &&
+                     mymode == mode_T,
+                     "Div or Mod node", 0
+                     );
+      op_is_symmetric = 1;
+      break;
+
+    case iro_Abs:
+      op1mode = get_irn_mode(in[1]);
+      ASSERT_AND_RET_DBG(
+                         /* Abs: BB x num --> num */
+                         op1mode == mymode &&
+                         mode_is_num (op1mode),
+                         "Abs node", 0,
+                         show_unop_failure(n, "/* Abs: BB x num --> num */");
+                         );
+      op_is_symmetric = 2;
+      break;
+
+    case iro_And:
+    case iro_Or:
+    case iro_Eor:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* And or Or or Eor: BB x int x int --> int */
+                         mode_is_int(mymode) &&
+                         op2mode == op1mode &&
+                         mymode == op2mode,
+                         "And, Or or Eor node", 0,
+                         show_binop_failure(n, "/* And or Or or Eor: BB x int x int --> int */");
+                         );
+      op_is_symmetric = 2;
+      break;
+
+    case iro_Not:
+      op1mode = get_irn_mode(in[1]);
+      ASSERT_AND_RET_DBG(
+                         /* Not: BB x int --> int */
+                         mode_is_int(mymode) &&
+                         mymode == op1mode,
+                         "Not node", 0,
+                         show_unop_failure(n, "/* Not: BB x int --> int */");
+                         );
+      op_is_symmetric = 2;
+      break;
+
+
+    case iro_Cmp:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Cmp: BB x datab x datab --> b16 */
+                         mode_is_data (op1mode) &&
+                         op2mode == op1mode &&
+                         mymode == mode_T,
+                         "Cmp node", 0,
+                         show_binop_failure(n, "/* Cmp: BB x datab x datab --> b16 */");
+                         );
+      break;
+
+    case iro_Shl:
+    case iro_Shr:
+    case iro_Shrs:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Shl, Shr or Shrs: BB x int x int_u --> int */
+                         mode_is_int(op1mode) &&
+                         mode_is_int(op2mode) &&
+                         !mode_is_signed(op2mode) &&
+                         mymode == op1mode,
+                         "Shl, Shr, Shr or Rot node", 0,
+                         show_binop_failure(n, "/* Shl, Shr or Shrs: BB x int x int_u --> int */");
+                         );
+      break;
+
+    case iro_Rot:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Rot: BB x int x int --> int */
+                         mode_is_int(op1mode) &&
+                         mode_is_int(op2mode) &&
+                         mymode == op1mode,
+                         "Rot node", 0,
+                         show_binop_failure(n, "/* Rot: BB x int x int --> int */");
+                         );
+      break;
+
+    case iro_Conv:
+      op1mode = get_irn_mode(in[1]);
+      ASSERT_AND_RET_DBG(
+                         /* Conv: BB x datab1 --> datab2 */
+                         mode_is_datab(op1mode) && mode_is_data(mymode),
+                         "Conv node", 0,
+                         show_unop_failure(n, "/* Conv: BB x datab1 --> datab2 */");
+                         );
+      break;
+
+    case iro_Cast:
+      op1mode = get_irn_mode(in[1]);
+      ASSERT_AND_RET_DBG(
+                         /* Conv: BB x datab1 --> datab2 */
+                         mode_is_data(op1mode) && op1mode == mymode,
+                         "Cast node", 0,
+                         show_unop_failure(n, "/* Conv: BB x datab1 --> datab2 */");
+                         );
+      break;
+
+    case iro_Phi:
+    {
+      ir_node *block = get_nodes_block(n);
+
+      if (! is_Bad(block) && get_irg_phase_state(get_irn_irg(n)) != phase_building) {
+        /* a Phi node MUST have the same number of inputs as its block */
+        ASSERT_AND_RET_DBG(
+          get_irn_arity(n) == get_irn_arity(block),
+          "wrong number of inputs in Phi node", 0,
+          show_phi_inputs(n, block);
+        );
+      }
+
+      /* Phi: BB x dataM^n --> dataM */
+      for (i = 1; i < get_irn_arity(n); i++) {
+        if (!is_Bad(in[i]) && (get_irn_op(in[i]) != op_Unknown))
+          ASSERT_AND_RET_DBG(
+                             get_irn_mode(in[i]) == mymode,
+                             "Phi node", 0,
+                             show_phi_failure(n, in[i], i);
+                             );
+      };
+      ASSERT_AND_RET( mode_is_dataM(mymode), "Phi node", 0 );
+      break;
+    }
+    case iro_Load:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET(
+                     /* Load: BB x M x ref --> M x X x data */
+                     op1mode == mode_M && mode_is_reference(op2mode),
+                     "Load node", 0
+                     );
+      ASSERT_AND_RET( mymode == mode_T, "Load node", 0 );
+
+      /*
+       * jack's gen_add_firm_code:simpleSel seems to build Load (Load
+       * (Proj (Proj))) sometimes ...
+
+       * interprete.c:ai_eval seems to assume that this happens, too
+
+       * obset.c:get_abstval_any can't deal with this if the load has
+       * mode_T
+       *
+      {
+        entity *ent = hunt_for_entity (get_Load_ptr (n), n);
+        assert ((NULL != ent) || (mymode != mode_T));
+      }
+      */
+
+      break;
+
+    case iro_Store:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      op3mode = get_irn_mode(in[3]);
+      ASSERT_AND_RET(
+                     /* Load: BB x M x ref data --> M x X */
+                     op1mode == mode_M && mode_is_reference(op2mode) && mode_is_data(op3mode),
+                     "Store node", 0
+                     );
+      ASSERT_AND_RET(mymode == mode_T, "Store node", 0);
+
+      entity *target = get_ptr_entity(in[2]);
+      if (vrfy_entities && target && get_irg_phase_state(current_ir_graph) == phase_high) {
+        /*
+         * If lowered code, any Sels that add 0 may be removed, causing
+         * an direct access to entities of array or compound type.
+         * Prevent this by checking the phase.
+         */
+        ASSERT_AND_RET( op3mode == get_type_mode(get_entity_type(target)),
+                        "Store node", 0);
+      }
+
+      break;
+
+    case iro_Alloc:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Alloc: BB x M x int_u --> M x X x ref */
+                         op1mode == mode_M &&
+                         mode_is_int(op2mode) &&
+                         !mode_is_signed(op2mode) &&
+                         mymode == mode_T,
+                         "Alloc node", 0,
+                         show_binop_failure(n, "/* Alloc: BB x M x int_u --> M x X x ref */");
+                         );
+      break;
+
+    case iro_Free:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Free: BB x M x ref --> M */
+                         op1mode == mode_M && mode_is_reference(op2mode) &&
+                         mymode == mode_M,
+                         "Free node", 0,
+                         show_binop_failure(n, "/* Free: BB x M x ref --> M */");
+                         );
+      break;
+
+    case iro_Sync:
+      /* Sync: BB x M^n --> M */
+      for (i=1; i < get_irn_arity(n); i++) {
+        ASSERT_AND_RET( get_irn_mode(in[i]) == mode_M, "Sync node", 0 );
+      };
+      ASSERT_AND_RET( mymode == mode_M, "Sync node", 0 );
+      break;
+
+    case iro_Proj:
+      return vrfy_Proj_proj(n, irg);
+      break;
+
+    case iro_Confirm:
+      op1mode = get_irn_mode(in[1]);
+      op2mode = get_irn_mode(in[2]);
+      ASSERT_AND_RET_DBG(
+                         /* Confirm: BB x T x T --> T */
+                         op1mode == mymode &&
+                         op2mode == mymode,
+                         "Confirm node", 0,
+                         show_binop_failure(n, "/* Confirm: BB x T x T --> T */");
+                         );
+      break;
+
+    default:
+      break;
+    }
+
+  /* All went ok */
+  return 1;
 }
 
+int irn_vrfy(ir_node *n)
+{
+  int res = 1;
+#ifdef DEBUG_libfirm
+  res = irn_vrfy_irg(n, current_ir_graph);
+#endif
+  return res;
+}
 
-/*******************************************************************/
+/*-----------------------------------------------------------------*/
 /* Verify the whole graph.                                         */
-/*******************************************************************/
+/*-----------------------------------------------------------------*/
 
-void
-vrfy_wrap (ir_node *node, void *env) {
-  irn_vrfy(node);
+/* This *is* used, except gcc doesn't notice that */
+static void vrfy_wrap(ir_node *node, void *env)
+{
+  int *res = env;
+
+  *res = irn_vrfy(node);
 }
 
-void
-irg_vrfy (ir_graph *irg)
+int irg_vrfy(ir_graph *irg)
 {
+  int res = 1;
+#ifdef DEBUG_libfirm
   ir_graph *rem;
+
   rem = current_ir_graph;
   current_ir_graph = irg;
 
-  assert(get_irg_pinned(irg) == pinned);
+  assert(get_irg_pinned(irg) == op_pin_state_pinned);
 
-  irg_walk(irg->end, vrfy_wrap, NULL, NULL);
+  irg_walk_graph(irg, vrfy_wrap, NULL, &res);
 
   current_ir_graph = rem;
+
+  if (opt_do_node_verification == NODE_VERIFICATION_REPORT && ! res) {
+    entity *ent = get_irg_entity(current_ir_graph);
+
+    if (ent)
+      fprintf(stderr, "irg_verify: Verifying graph %s failed\n", get_entity_name(ent));
+    else
+      fprintf(stderr, "irg_verify: Verifying graph %p failed\n", (void *)current_ir_graph);
+  }
+
+#endif
+  return res;
+}
+
+int irn_vrfy_irg_dump(ir_node *n, ir_graph *irg, const char **bad_string)
+{
+  int res;
+  node_verification_t old = opt_do_node_verification;
+
+  bad_msg = NULL;
+  opt_do_node_verification = NODE_VERIFICATION_ERROR_ONLY;
+  res = irn_vrfy_irg(n, irg);
+  opt_do_node_verification = old;
+  *bad_string = bad_msg;
+
+  return res;
+}
+
+
+typedef struct _vrfy_bad_env_t {
+  int flags;
+  int res;
+} vrfy_bad_env_t;
+
+static void check_bads(ir_node *node, void *env)
+{
+  vrfy_bad_env_t *venv = env;
+  int i, arity = get_irn_arity(node);
+
+  if (is_Block(node)) {
+    if ((venv->flags & BAD_CF) == 0) {
+
+      /* check for Bad Block predecessor */
+      for (i = 0; i < arity; ++i) {
+        ir_node *pred = get_irn_n(node, i);
+
+        if (is_Bad(pred)) {
+          venv->res |= BAD_CF;
+
+          if (opt_do_node_verification == NODE_VERIFICATION_REPORT) {
+            fprintf(stderr, "irg_vrfy_bads: Block %ld has Bad predecessor\n", get_irn_node_nr(node));
+          }
+          if (opt_do_node_verification == NODE_VERIFICATION_ON) {
+            assert(0 && "Bad CF detected");
+          }
+        }
+      }
+    }
+  }
+  else {
+    if ((venv->flags & BAD_BLOCK) == 0) {
+
+      /* check for Bad Block */
+      if (is_Bad(get_nodes_block(node))) {
+        venv->res |= BAD_BLOCK;
+
+        if (opt_do_node_verification == NODE_VERIFICATION_REPORT) {
+          fprintf(stderr, "irg_vrfy_bads: node %ld has Bad Block\n", get_irn_node_nr(node));
+        }
+        if (opt_do_node_verification == NODE_VERIFICATION_ON) {
+          assert(0 && "Bad CF detected");
+        }
+      }
+    }
+
+    if ((venv->flags & TUPLE) == 0) {
+      if (get_irn_op(node) == op_Tuple) {
+        venv->res |= TUPLE;
+
+        if (opt_do_node_verification == NODE_VERIFICATION_REPORT) {
+          fprintf(stderr, "irg_vrfy_bads: node %ld is a Tuple\n", get_irn_node_nr(node));
+        }
+        if (opt_do_node_verification == NODE_VERIFICATION_ON) {
+          assert(0 && "Tuple detected");
+        }
+      }
+    }
+
+    for (i = 0; i < arity; ++i) {
+      ir_node *pred = get_irn_n(node, i);
+
+      if (is_Bad(pred)) {
+        /* check for Phi with Bad inputs */
+        if (is_Phi(node) && !is_Bad(get_nodes_block(node)) && is_Bad(get_irn_n(get_nodes_block(node), i))) {
+          if (venv->flags & BAD_CF)
+            continue;
+          else {
+            venv->res |= BAD_CF;
+
+            if (opt_do_node_verification == NODE_VERIFICATION_REPORT) {
+              fprintf(stderr, "irg_vrfy_bads: Phi %ld has Bad Input\n", get_irn_node_nr(node));
+            }
+            if (opt_do_node_verification == NODE_VERIFICATION_ON) {
+              assert(0 && "Bad CF detected");
+            }
+          }
+        }
+
+        /* Bad node input */
+        if ((venv->flags & BAD_DF) == 0) {
+          venv->res |= BAD_DF;
+
+          if (opt_do_node_verification == NODE_VERIFICATION_REPORT) {
+            fprintf(stderr, "irg_vrfy_bads: node %ld has Bad Input\n", get_irn_node_nr(node));
+          }
+          if (opt_do_node_verification == NODE_VERIFICATION_ON) {
+            assert(0 && "Bad NON-CF detected");
+          }
+        }
+      }
+    }
+  }
+}
+
+/*
+ * verify occurance of bad nodes
+ */
+int irg_vrfy_bads(ir_graph *irg, int flags)
+{
+  vrfy_bad_env_t env;
+
+  env.flags = flags;
+  env.res   = 0;
+
+  irg_walk_graph(irg, check_bads, NULL, &env);
+
+  return env.res;
 }