Fixed a lot of size_t related warnings, most of them due to array implementation...
[libfirm] / ir / ir / iropt.c
index 272e96d..f72a337 100644 (file)
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ * Copyright (C) 1995-2011 University of Karlsruhe.  All right reserved.
  *
  * This file is part of libFirm.
  *
@@ -36,6 +36,7 @@
 #include "ircons_t.h"
 #include "irgmod.h"
 #include "irverify.h"
+#include "iroptimize.h"
 #include "tv_t.h"
 #include "dbginfo_t.h"
 #include "iropt_dbg.h"
@@ -43,7 +44,6 @@
 #include "irhooks.h"
 #include "irarch.h"
 #include "hashptr.h"
-#include "opt_confirms.h"
 #include "opt_polymorphy.h"
 #include "irtools.h"
 #include "irhooks.h"
@@ -59,7 +59,7 @@
 /**
  * Returns the tarval of a Const node or tarval_bad for all other nodes.
  */
-static tarval *default_value_of(const ir_node *n)
+static ir_tarval *default_value_of(const ir_node *n)
 {
        if (is_Const(n))
                return get_Const_tarval(n); /* might return tarval_bad */
@@ -81,7 +81,7 @@ void set_value_of_func(value_of_func func)
 /**
  * Return the value of a Constant.
  */
-static tarval *computed_value_Const(const ir_node *n)
+static ir_tarval *computed_value_Const(const ir_node *n)
 {
        return get_Const_tarval(n);
 }  /* computed_value_Const */
@@ -89,7 +89,7 @@ static tarval *computed_value_Const(const ir_node *n)
 /**
  * Return the value of a 'sizeof', 'alignof' or 'offsetof' SymConst.
  */
-static tarval *computed_value_SymConst(const ir_node *n)
+static ir_tarval *computed_value_SymConst(const ir_node *n)
 {
        ir_type   *type;
        ir_entity *ent;
@@ -120,13 +120,13 @@ static tarval *computed_value_SymConst(const ir_node *n)
 /**
  * Return the value of an Add.
  */
-static tarval *computed_value_Add(const ir_node *n)
+static ir_tarval *computed_value_Add(const ir_node *n)
 {
        ir_node *a = get_Add_left(n);
        ir_node *b = get_Add_right(n);
 
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad))
                return tarval_add(ta, tb);
@@ -138,13 +138,13 @@ static tarval *computed_value_Add(const ir_node *n)
  * Return the value of a Sub.
  * Special case: a - a
  */
-static tarval *computed_value_Sub(const ir_node *n)
+static ir_tarval *computed_value_Sub(const ir_node *n)
 {
-       ir_mode *mode = get_irn_mode(n);
-       ir_node *a    = get_Sub_left(n);
-       ir_node *b    = get_Sub_right(n);
-       tarval  *ta;
-       tarval  *tb;
+       ir_mode   *mode = get_irn_mode(n);
+       ir_node   *a    = get_Sub_left(n);
+       ir_node   *b    = get_Sub_right(n);
+       ir_tarval *ta;
+       ir_tarval *tb;
 
        /* NaN - NaN != 0 */
        if (! mode_is_float(mode)) {
@@ -166,14 +166,13 @@ static tarval *computed_value_Sub(const ir_node *n)
  * Return the value of a Carry.
  * Special : a op 0, 0 op b
  */
-static tarval *computed_value_Carry(const ir_node *n)
+static ir_tarval *computed_value_Carry(const ir_node *n)
 {
-       ir_node *a = get_binop_left(n);
-       ir_node *b = get_binop_right(n);
-       ir_mode *m = get_irn_mode(n);
-
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_node   *a  = get_binop_left(n);
+       ir_node   *b  = get_binop_right(n);
+       ir_mode   *m  = get_irn_mode(n);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                tarval_add(ta, tb);
@@ -189,14 +188,13 @@ static tarval *computed_value_Carry(const ir_node *n)
  * Return the value of a Borrow.
  * Special : a op 0
  */
-static tarval *computed_value_Borrow(const ir_node *n)
+static ir_tarval *computed_value_Borrow(const ir_node *n)
 {
-       ir_node *a = get_binop_left(n);
-       ir_node *b = get_binop_right(n);
-       ir_mode *m = get_irn_mode(n);
-
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_node   *a  = get_binop_left(n);
+       ir_node   *b  = get_binop_right(n);
+       ir_mode   *m  = get_irn_mode(n);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                return tarval_cmp(ta, tb) == pn_Cmp_Lt ? get_mode_one(m) : get_mode_null(m);
@@ -209,10 +207,10 @@ static tarval *computed_value_Borrow(const ir_node *n)
 /**
  * Return the value of an unary Minus.
  */
-static tarval *computed_value_Minus(const ir_node *n)
+static ir_tarval *computed_value_Minus(const ir_node *n)
 {
-       ir_node *a = get_Minus_op(n);
-       tarval *ta = value_of(a);
+       ir_node   *a  = get_Minus_op(n);
+       ir_tarval *ta = value_of(a);
 
        if (ta != tarval_bad)
                return tarval_neg(ta);
@@ -223,14 +221,13 @@ static tarval *computed_value_Minus(const ir_node *n)
 /**
  * Return the value of a Mul.
  */
-static tarval *computed_value_Mul(const ir_node *n)
+static ir_tarval *computed_value_Mul(const ir_node *n)
 {
-       ir_node *a = get_Mul_left(n);
-       ir_node *b = get_Mul_right(n);
-       ir_mode *mode;
-
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_node   *a  = get_Mul_left(n);
+       ir_node   *b  = get_Mul_right(n);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
+       ir_mode   *mode;
 
        mode = get_irn_mode(n);
        if (mode != get_irn_mode(a)) {
@@ -258,13 +255,12 @@ static tarval *computed_value_Mul(const ir_node *n)
  * Return the value of an And.
  * Special case: a & 0, 0 & b
  */
-static tarval *computed_value_And(const ir_node *n)
+static ir_tarval *computed_value_And(const ir_node *n)
 {
-       ir_node *a = get_And_left(n);
-       ir_node *b = get_And_right(n);
-
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_node   *a  = get_And_left(n);
+       ir_node   *b  = get_And_right(n);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                return tarval_and (ta, tb);
@@ -279,13 +275,12 @@ static tarval *computed_value_And(const ir_node *n)
  * Return the value of an Or.
  * Special case: a | 1...1, 1...1 | b
  */
-static tarval *computed_value_Or(const ir_node *n)
+static ir_tarval *computed_value_Or(const ir_node *n)
 {
-       ir_node *a = get_Or_left(n);
-       ir_node *b = get_Or_right(n);
-
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_node   *a  = get_Or_left(n);
+       ir_node   *b  = get_Or_right(n);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                return tarval_or (ta, tb);
@@ -299,12 +294,12 @@ static tarval *computed_value_Or(const ir_node *n)
 /**
  * Return the value of an Eor.
  */
-static tarval *computed_value_Eor(const ir_node *n)
+static ir_tarval *computed_value_Eor(const ir_node *n)
 {
        ir_node *a = get_Eor_left(n);
        ir_node *b = get_Eor_right(n);
 
-       tarval *ta, *tb;
+       ir_tarval *ta, *tb;
 
        if (a == b)
                return get_mode_null(get_irn_mode(n));
@@ -321,10 +316,10 @@ static tarval *computed_value_Eor(const ir_node *n)
 /**
  * Return the value of a Not.
  */
-static tarval *computed_value_Not(const ir_node *n)
+static ir_tarval *computed_value_Not(const ir_node *n)
 {
-       ir_node *a = get_Not_op(n);
-       tarval *ta = value_of(a);
+       ir_node   *a  = get_Not_op(n);
+       ir_tarval *ta = value_of(a);
 
        if (ta != tarval_bad)
                return tarval_not(ta);
@@ -335,13 +330,13 @@ static tarval *computed_value_Not(const ir_node *n)
 /**
  * Return the value of a Shl.
  */
-static tarval *computed_value_Shl(const ir_node *n)
+static ir_tarval *computed_value_Shl(const ir_node *n)
 {
        ir_node *a = get_Shl_left(n);
        ir_node *b = get_Shl_right(n);
 
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                return tarval_shl(ta, tb);
@@ -352,13 +347,13 @@ static tarval *computed_value_Shl(const ir_node *n)
 /**
  * Return the value of a Shr.
  */
-static tarval *computed_value_Shr(const ir_node *n)
+static ir_tarval *computed_value_Shr(const ir_node *n)
 {
        ir_node *a = get_Shr_left(n);
        ir_node *b = get_Shr_right(n);
 
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                return tarval_shr(ta, tb);
@@ -369,13 +364,13 @@ static tarval *computed_value_Shr(const ir_node *n)
 /**
  * Return the value of a Shrs.
  */
-static tarval *computed_value_Shrs(const ir_node *n)
+static ir_tarval *computed_value_Shrs(const ir_node *n)
 {
        ir_node *a = get_Shrs_left(n);
        ir_node *b = get_Shrs_right(n);
 
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                return tarval_shrs(ta, tb);
@@ -386,13 +381,13 @@ static tarval *computed_value_Shrs(const ir_node *n)
 /**
  * Return the value of a Rotl.
  */
-static tarval *computed_value_Rotl(const ir_node *n)
+static ir_tarval *computed_value_Rotl(const ir_node *n)
 {
        ir_node *a = get_Rotl_left(n);
        ir_node *b = get_Rotl_right(n);
 
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        if ((ta != tarval_bad) && (tb != tarval_bad)) {
                return tarval_rotl(ta, tb);
@@ -403,10 +398,10 @@ static tarval *computed_value_Rotl(const ir_node *n)
 /**
  * Return the value of a Conv.
  */
-static tarval *computed_value_Conv(const ir_node *n)
+static ir_tarval *computed_value_Conv(const ir_node *n)
 {
        ir_node *a = get_Conv_op(n);
-       tarval *ta = value_of(a);
+       ir_tarval *ta = value_of(a);
 
        if (ta != tarval_bad)
                return tarval_convert_to(ta, get_irn_mode(n));
@@ -418,10 +413,10 @@ static tarval *computed_value_Conv(const ir_node *n)
  * Calculate the value of a Mux: can be evaluated, if the
  * sel and the right input are known.
  */
-static tarval *computed_value_Mux(const ir_node *n)
+static ir_tarval *computed_value_Mux(const ir_node *n)
 {
        ir_node *sel = get_Mux_sel(n);
-       tarval *ts = value_of(sel);
+       ir_tarval *ts = value_of(sel);
 
        if (ts == get_tarval_b_true()) {
                ir_node *v = get_Mux_true(n);
@@ -438,10 +433,10 @@ static tarval *computed_value_Mux(const ir_node *n)
  * Calculate the value of a Confirm: can be evaluated,
  * if it has the form Confirm(x, '=', Const).
  */
-static tarval *computed_value_Confirm(const ir_node *n)
+static ir_tarval *computed_value_Confirm(const ir_node *n)
 {
        if (get_Confirm_cmp(n) == pn_Cmp_Eq) {
-               tarval *tv = value_of(get_Confirm_bound(n));
+               ir_tarval *tv = value_of(get_Confirm_bound(n));
                if (tv != tarval_bad)
                        return tv;
        }
@@ -457,14 +452,14 @@ static tarval *computed_value_Confirm(const ir_node *n)
  * only 1 is used.
  * There are several case where we can evaluate a Cmp node, see later.
  */
-static tarval *computed_value_Proj_Cmp(const ir_node *n)
+static ir_tarval *computed_value_Proj_Cmp(const ir_node *n)
 {
-       ir_node *cmp   = get_Proj_pred(n);
-       ir_node *left  = get_Cmp_left(cmp);
-       ir_node *right = get_Cmp_right(cmp);
-       long pn_cmp    = get_Proj_proj(n);
-       ir_mode *mode  = get_irn_mode(left);
-       tarval *tv_l, *tv_r;
+       ir_node *cmp    = get_Proj_pred(n);
+       ir_node *left   = get_Cmp_left(cmp);
+       ir_node *right  = get_Cmp_right(cmp);
+       pn_Cmp   pn_cmp = get_Proj_pn_cmp(n);
+       ir_mode *mode   = get_irn_mode(left);
+       ir_tarval *tv_l, *tv_r;
 
        /*
         * BEWARE: a == a is NOT always True for floating Point values, as
@@ -551,10 +546,10 @@ static tarval *computed_value_Proj_Cmp(const ir_node *n)
 /**
  * Return the value of a floating point Quot.
  */
-static tarval *do_computed_value_Quot(const ir_node *a, const ir_node *b)
+static ir_tarval *do_computed_value_Quot(const ir_node *a, const ir_node *b)
 {
-       tarval  *ta = value_of(a);
-       tarval  *tb = value_of(b);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        /* cannot optimize 0 / b = 0 because of NaN */
        if (ta != tarval_bad && tb != tarval_bad)
@@ -566,10 +561,10 @@ static tarval *do_computed_value_Quot(const ir_node *a, const ir_node *b)
  * Calculate the value of an integer Div of two nodes.
  * Special case: 0 / b
  */
-static tarval *do_computed_value_Div(const ir_node *a, const ir_node *b)
+static ir_tarval *do_computed_value_Div(const ir_node *a, const ir_node *b)
 {
-       tarval        *ta = value_of(a);
-       tarval        *tb;
+       ir_tarval     *ta = value_of(a);
+       ir_tarval     *tb;
        const ir_node *dummy;
 
        /* Compute c1 / c2 or 0 / a, a != 0 */
@@ -585,10 +580,10 @@ static tarval *do_computed_value_Div(const ir_node *a, const ir_node *b)
  * Calculate the value of an integer Mod of two nodes.
  * Special case: a % 1
  */
-static tarval *do_computed_value_Mod(const ir_node *a, const ir_node *b)
+static ir_tarval *do_computed_value_Mod(const ir_node *a, const ir_node *b)
 {
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
+       ir_tarval *ta = value_of(a);
+       ir_tarval *tb = value_of(b);
 
        /* Compute a % 1 or c1 % c2 */
        if (tarval_is_one(tb))
@@ -601,7 +596,7 @@ static tarval *do_computed_value_Mod(const ir_node *a, const ir_node *b)
 /**
  * Return the value of a Proj(DivMod).
  */
-static tarval *computed_value_Proj_DivMod(const ir_node *n)
+static ir_tarval *computed_value_Proj_DivMod(const ir_node *n)
 {
        long proj_nr = get_Proj_proj(n);
 
@@ -619,7 +614,7 @@ static tarval *computed_value_Proj_DivMod(const ir_node *n)
 /**
  * Return the value of a Proj(Div).
  */
-static tarval *computed_value_Proj_Div(const ir_node *n)
+static ir_tarval *computed_value_Proj_Div(const ir_node *n)
 {
        long proj_nr = get_Proj_proj(n);
 
@@ -633,7 +628,7 @@ static tarval *computed_value_Proj_Div(const ir_node *n)
 /**
  * Return the value of a Proj(Mod).
  */
-static tarval *computed_value_Proj_Mod(const ir_node *n)
+static ir_tarval *computed_value_Proj_Mod(const ir_node *n)
 {
        long proj_nr = get_Proj_proj(n);
 
@@ -647,7 +642,7 @@ static tarval *computed_value_Proj_Mod(const ir_node *n)
 /**
  * Return the value of a Proj(Quot).
  */
-static tarval *computed_value_Proj_Quot(const ir_node *n)
+static ir_tarval *computed_value_Proj_Quot(const ir_node *n)
 {
        long proj_nr = get_Proj_proj(n);
 
@@ -661,7 +656,7 @@ static tarval *computed_value_Proj_Quot(const ir_node *n)
 /**
  * Return the value of a Proj.
  */
-static tarval *computed_value_Proj(const ir_node *proj)
+static ir_tarval *computed_value_Proj(const ir_node *proj)
 {
        ir_node *n = get_Proj_pred(proj);
 
@@ -676,7 +671,7 @@ static tarval *computed_value_Proj(const ir_node *proj)
  *
  * @param n  The node this should be evaluated
  */
-tarval *computed_value(const ir_node *n)
+ir_tarval *computed_value(const ir_node *n)
 {
        vrp_attr *vrp = vrp_get_info(n);
        if (vrp && vrp->valid && tarval_cmp(vrp->bits_set, vrp->bits_not_set) == pn_Cmp_Eq) {
@@ -889,7 +884,7 @@ static ir_node *equivalent_node_neutral_zero(ir_node *n)
        ir_node *a = get_binop_left(n);
        ir_node *b = get_binop_right(n);
 
-       tarval *tv;
+       ir_tarval *tv;
        ir_node *on;
 
        /* After running compute_node there is only one constant predecessor.
@@ -1029,9 +1024,9 @@ static ir_node *equivalent_node_left_zero(ir_node *n)
 {
        ir_node *oldn = n;
 
-       ir_node *a  = get_binop_left(n);
-       ir_node *b  = get_binop_right(n);
-       tarval  *tb = value_of(b);
+       ir_node   *a  = get_binop_left(n);
+       ir_node   *b  = get_binop_right(n);
+       ir_tarval *tb = value_of(b);
 
        if (tarval_is_null(tb)) {
                n = a;
@@ -1057,10 +1052,10 @@ static ir_node *equivalent_node_left_zero(ir_node *n)
  */
 static ir_node *equivalent_node_Sub(ir_node *n)
 {
-       ir_node *oldn = n;
-       ir_node *b;
-       ir_mode *mode = get_irn_mode(n);
-       tarval  *tb;
+       ir_node   *oldn = n;
+       ir_node   *b;
+       ir_mode   *mode = get_irn_mode(n);
+       ir_tarval *tb;
 
        /* for FP these optimizations are only allowed if fp_strict_algebraic is disabled */
        if (mode_is_float(mode)) {
@@ -1123,8 +1118,8 @@ static ir_node *equivalent_node_Mul(ir_node *n)
 
        /* we can handle here only the n * n = n bit cases */
        if (get_irn_mode(n) == get_irn_mode(a)) {
-               ir_node *b = get_Mul_right(n);
-               tarval  *tv;
+               ir_node   *b = get_Mul_right(n);
+               ir_tarval *tv;
 
                /*
                 * Mul is commutative and has again an other neutral element.
@@ -1152,9 +1147,9 @@ static ir_node *equivalent_node_Or(ir_node *n)
 {
        ir_node *oldn = n;
 
-       ir_node *a = get_Or_left(n);
-       ir_node *b = get_Or_right(n);
-       tarval *tv;
+       ir_node   *a = get_Or_left(n);
+       ir_node   *b = get_Or_right(n);
+       ir_tarval *tv;
 
        if (a == b) {
                n = a;    /* Or has it's own neutral element */
@@ -1185,9 +1180,9 @@ static ir_node *equivalent_node_And(ir_node *n)
 {
        ir_node *oldn = n;
 
-       ir_node *a = get_And_left(n);
-       ir_node *b = get_And_right(n);
-       tarval *tv;
+       ir_node   *a = get_And_left(n);
+       ir_node   *b = get_And_right(n);
+       ir_tarval *tv;
 
        if (a == b) {
                n = a;    /* And has it's own neutral element */
@@ -1372,22 +1367,6 @@ restart:
        return n;
 }  /* equivalent_node_Conv */
 
-/**
- * A Cast may be removed if the type of the previous node
- * is already the type of the Cast.
- */
-static ir_node *equivalent_node_Cast(ir_node *n)
-{
-       ir_node *oldn = n;
-       ir_node *pred = get_Cast_op(n);
-
-       if (get_irn_type(pred) == get_Cast_type(n)) {
-               n = pred;
-               DBG_OPT_ALGSIM0(oldn, n, FS_OPT_CAST);
-       }
-       return n;
-}  /* equivalent_node_Cast */
-
 /**
  * - fold Phi-nodes, iff they have only one predecessor except
  *   themselves.
@@ -1456,7 +1435,7 @@ static ir_node *equivalent_node_Phi(ir_node *n)
                }
        }
 
-       if (i >= n_preds) {
+       if (i >= n_preds && !is_Dummy(first_val)) {
                /* Fold, if no multiple distinct non-self-referencing inputs */
                n = first_val;
                DBG_OPT_PHI(oldn, n);
@@ -1527,10 +1506,10 @@ static ir_node *equivalent_node_Proj_Tuple(ir_node *proj)
  */
 static ir_node *equivalent_node_Proj_Div(ir_node *proj)
 {
-       ir_node *oldn = proj;
-       ir_node *div  = get_Proj_pred(proj);
-       ir_node *b    = get_Div_right(div);
-       tarval  *tb   = value_of(b);
+       ir_node   *oldn = proj;
+       ir_node   *div  = get_Proj_pred(proj);
+       ir_node   *b    = get_Div_right(div);
+       ir_tarval *tb   = value_of(b);
 
        /* Div is not commutative. */
        if (tarval_is_one(tb)) { /* div(x, 1) == x */
@@ -1559,10 +1538,10 @@ static ir_node *equivalent_node_Proj_Div(ir_node *proj)
  */
 static ir_node *equivalent_node_Proj_Quot(ir_node *proj)
 {
-       ir_node *oldn = proj;
-       ir_node *quot = get_Proj_pred(proj);
-       ir_node *b    = get_Quot_right(quot);
-       tarval  *tb   = value_of(b);
+       ir_node   *oldn = proj;
+       ir_node   *quot = get_Proj_pred(proj);
+       ir_node   *b    = get_Quot_right(quot);
+       ir_tarval *tb   = value_of(b);
 
        /* Div is not commutative. */
        if (tarval_is_one(tb)) { /* Quot(x, 1) == x */
@@ -1591,10 +1570,10 @@ static ir_node *equivalent_node_Proj_Quot(ir_node *proj)
  */
 static ir_node *equivalent_node_Proj_DivMod(ir_node *proj)
 {
-       ir_node *oldn   = proj;
-       ir_node *divmod = get_Proj_pred(proj);
-       ir_node *b      = get_DivMod_right(divmod);
-       tarval  *tb     = value_of(b);
+       ir_node   *oldn   = proj;
+       ir_node   *divmod = get_Proj_pred(proj);
+       ir_node   *b      = get_DivMod_right(divmod);
+       ir_tarval *tb     = value_of(b);
 
        /* Div is not commutative. */
        if (tarval_is_one(tb)) { /* div(x, 1) == x */
@@ -1795,9 +1774,9 @@ static ir_node *equivalent_node_Id(ir_node *n)
  */
 static ir_node *equivalent_node_Mux(ir_node *n)
 {
-       ir_node *oldn = n, *sel = get_Mux_sel(n);
-       ir_node *n_t, *n_f;
-       tarval *ts = value_of(sel);
+       ir_node   *oldn = n, *sel = get_Mux_sel(n);
+       ir_node   *n_t, *n_f;
+       ir_tarval *ts = value_of(sel);
 
        /* Mux(true, f, t) == t */
        if (ts == tarval_b_true) {
@@ -1965,7 +1944,6 @@ static ir_op_ops *firm_set_default_equivalent_node(ir_opcode code, ir_op_ops *op
        CASE(Or);
        CASE(And);
        CASE(Conv);
-       CASE(Cast);
        CASE(Phi);
        CASE(Sync);
        CASE_PROJ(Tuple);
@@ -2007,8 +1985,8 @@ static int is_const_Phi(ir_node *n)
        return 1;
 }  /* is_const_Phi */
 
-typedef tarval *(*tarval_sub_type)(tarval *a, tarval *b, ir_mode *mode);
-typedef tarval *(*tarval_binop_type)(tarval *a, tarval *b);
+typedef ir_tarval *(*tarval_sub_type)(ir_tarval *a, ir_tarval *b, ir_mode *mode);
+typedef ir_tarval *(*tarval_binop_type)(ir_tarval *a, ir_tarval *b);
 
 /**
  * in reality eval_func should be tarval (*eval_func)() but incomplete
@@ -2019,7 +1997,7 @@ typedef void (*eval_func)(void);
 /**
  * Wrapper for the tarval binop evaluation, tarval_sub has one more parameter.
  */
-static tarval *do_eval(eval_func eval, tarval *a, tarval *b, ir_mode *mode)
+static ir_tarval *do_eval(eval_func eval, ir_tarval *a, ir_tarval *b, ir_mode *mode)
 {
        if (eval == (eval_func) tarval_sub) {
                tarval_sub_type func = (tarval_sub_type)eval;
@@ -2043,13 +2021,13 @@ static tarval *do_eval(eval_func eval, tarval *a, tarval *b, ir_mode *mode)
  *
  * @return a new Phi node if the conversion was successful, NULL else
  */
-static ir_node *apply_binop_on_phi(ir_node *phi, tarval *other, eval_func eval, ir_mode *mode, int left)
+static ir_node *apply_binop_on_phi(ir_node *phi, ir_tarval *other, eval_func eval, ir_mode *mode, int left)
 {
-       tarval   *tv;
-       void     **res;
-       ir_node  *pred;
-       ir_graph *irg;
-       int      i, n = get_irn_arity(phi);
+       ir_tarval *tv;
+       void      **res;
+       ir_node   *pred;
+       ir_graph  *irg;
+       int       i, n = get_irn_arity(phi);
 
        NEW_ARR_A(void *, res, n);
        if (left) {
@@ -2080,7 +2058,7 @@ static ir_node *apply_binop_on_phi(ir_node *phi, tarval *other, eval_func eval,
        irg = get_irn_irg(phi);
        for (i = 0; i < n; ++i) {
                pred = get_irn_n(phi, i);
-               res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+               res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
        }
        return new_r_Phi(get_nodes_block(phi), n, (ir_node **)res, mode);
 }  /* apply_binop_on_phi */
@@ -2097,7 +2075,7 @@ static ir_node *apply_binop_on_phi(ir_node *phi, tarval *other, eval_func eval,
  */
 static ir_node *apply_binop_on_2_phis(ir_node *a, ir_node *b, eval_func eval, ir_mode *mode)
 {
-       tarval   *tv_l, *tv_r, *tv;
+       ir_tarval *tv_l, *tv_r, *tv;
        void     **res;
        ir_node  *pred;
        ir_graph *irg;
@@ -2125,7 +2103,7 @@ static ir_node *apply_binop_on_2_phis(ir_node *a, ir_node *b, eval_func eval, ir
        irg = get_irn_irg(a);
        for (i = 0; i < n; ++i) {
                pred = get_irn_n(a, i);
-               res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+               res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
        }
        return new_r_Phi(get_nodes_block(a), n, (ir_node **)res, mode);
 }  /* apply_binop_on_2_phis */
@@ -2138,9 +2116,9 @@ static ir_node *apply_binop_on_2_phis(ir_node *a, ir_node *b, eval_func eval, ir
  *
  * @return a new Phi node if the conversion was successful, NULL else
  */
-static ir_node *apply_unop_on_phi(ir_node *phi, tarval *(*eval)(tarval *))
+static ir_node *apply_unop_on_phi(ir_node *phi, ir_tarval *(*eval)(ir_tarval *))
 {
-       tarval   *tv;
+       ir_tarval *tv;
        void     **res;
        ir_node  *pred;
        ir_mode  *mode;
@@ -2163,7 +2141,7 @@ static ir_node *apply_unop_on_phi(ir_node *phi, tarval *(*eval)(tarval *))
        irg  = get_irn_irg(phi);
        for (i = 0; i < n; ++i) {
                pred = get_irn_n(phi, i);
-               res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+               res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
        }
        return new_r_Phi(get_nodes_block(phi), n, (ir_node **)res, mode);
 }  /* apply_unop_on_phi */
@@ -2177,7 +2155,7 @@ static ir_node *apply_unop_on_phi(ir_node *phi, tarval *(*eval)(tarval *))
  */
 static ir_node *apply_conv_on_phi(ir_node *phi, ir_mode *mode)
 {
-       tarval   *tv;
+       ir_tarval *tv;
        void     **res;
        ir_node  *pred;
        ir_graph *irg;
@@ -2198,7 +2176,7 @@ static ir_node *apply_conv_on_phi(ir_node *phi, ir_mode *mode)
        irg = get_irn_irg(phi);
        for (i = 0; i < n; ++i) {
                pred = get_irn_n(phi, i);
-               res[i] = new_r_Const_type(irg, res[i], get_Const_type(pred));
+               res[i] = new_r_Const(irg, (ir_tarval*)res[i]);
        }
        return new_r_Phi(get_nodes_block(phi), n, (ir_node **)res, mode);
 }  /* apply_conv_on_phi */
@@ -2366,7 +2344,7 @@ static ir_node *transform_node_Add(ir_node *n)
                                get_irn_dbg_info(n),
                                block,
                                a,
-                               new_Const_long(mode, 2),
+                               new_r_Const_long(irg, mode, 2),
                                mode);
                        DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_A_A);
                        return n;
@@ -2405,7 +2383,7 @@ static ir_node *transform_node_Add(ir_node *n)
                                }
                                if (op == b) {
                                        /* ~x + x = -1 */
-                                       n = new_Const(get_mode_minus_one(mode));
+                                       n = new_r_Const(irg, get_mode_minus_one(mode));
                                        DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_X_NOT_X);
                                        return n;
                                }
@@ -2415,7 +2393,7 @@ static ir_node *transform_node_Add(ir_node *n)
 
                                if (op == a) {
                                        /* x + ~x = -1 */
-                                       n = new_Const(get_mode_minus_one(mode));
+                                       n = new_r_Const(irg, get_mode_minus_one(mode));
                                        DBG_OPT_ALGSIM0(oldn, n, FS_OPT_ADD_X_NOT_X);
                                        return n;
                                }
@@ -2427,15 +2405,11 @@ static ir_node *transform_node_Add(ir_node *n)
        b_vrp = vrp_get_info(b);
 
        if (a_vrp && b_vrp) {
-               tarval *c = tarval_and(
-                                       a_vrp->bits_not_set,
-                                       b_vrp->bits_not_set
-                                       );
+               ir_tarval *c = tarval_and(a_vrp->bits_not_set, b_vrp->bits_not_set);
 
                if (tarval_is_null(c)) {
-                               dbg_info *dbgi  = get_irn_dbg_info(n);
-                               return new_rd_Or(dbgi, get_nodes_block(n),
-                                                       a, b, mode);
+                       dbg_info *dbgi  = get_irn_dbg_info(n);
+                       return new_rd_Or(dbgi, get_nodes_block(n), a, b, mode);
                }
        }
        return n;
@@ -2446,9 +2420,9 @@ static ir_node *transform_node_Add(ir_node *n)
  */
 static ir_node *const_negate(ir_node *cnst)
 {
-       tarval   *tv    = tarval_neg(get_Const_tarval(cnst));
-       dbg_info *dbgi  = get_irn_dbg_info(cnst);
-       ir_graph *irg   = get_irn_irg(cnst);
+       ir_tarval *tv    = tarval_neg(get_Const_tarval(cnst));
+       dbg_info  *dbgi  = get_irn_dbg_info(cnst);
+       ir_graph  *irg   = get_irn_irg(cnst);
        if (tv == tarval_bad) return NULL;
        return new_rd_Const(dbgi, irg, tv);
 }
@@ -2676,7 +2650,8 @@ restart:
                ir_node *mb = get_Mul_right(a);
 
                if (ma == b) {
-                       ir_node *blk = get_nodes_block(n);
+                       ir_node  *blk = get_nodes_block(n);
+                       ir_graph *irg = get_irn_irg(n);
                        n = new_rd_Mul(
                                        get_irn_dbg_info(n),
                                        blk,
@@ -2685,13 +2660,14 @@ restart:
                                                get_irn_dbg_info(n),
                                                blk,
                                                mb,
-                                               new_Const(get_mode_one(mode)),
+                                               new_r_Const(irg, get_mode_one(mode)),
                                                mode),
                                        mode);
                        DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_MUL_A_X_A);
                        return n;
                } else if (mb == b) {
-                       ir_node *blk = get_nodes_block(n);
+                       ir_node  *blk = get_nodes_block(n);
+                       ir_graph *irg = get_irn_irg(n);
                        n = new_rd_Mul(
                                        get_irn_dbg_info(n),
                                        blk,
@@ -2700,7 +2676,7 @@ restart:
                                                get_irn_dbg_info(n),
                                                blk,
                                                ma,
-                                               new_Const(get_mode_one(mode)),
+                                               new_r_Const(irg, get_mode_one(mode)),
                                                mode),
                                        mode);
                        DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_MUL_A_X_A);
@@ -2743,12 +2719,13 @@ restart:
        if (get_mode_arithmetic(mode) == irma_twos_complement) {
                if (is_Const(a) && is_Not(b)) {
                        /* c - ~X = X + (c+1) */
-                       tarval *tv = get_Const_tarval(a);
+                       ir_tarval *tv = get_Const_tarval(a);
 
                        tv = tarval_add(tv, get_mode_one(mode));
                        if (tv != tarval_bad) {
-                               ir_node *blk = get_nodes_block(n);
-                               ir_node *c = new_Const(tv);
+                               ir_node  *blk = get_nodes_block(n);
+                               ir_graph *irg = get_irn_irg(n);
+                               ir_node *c = new_r_Const(irg, tv);
                                n = new_rd_Add(get_irn_dbg_info(n), blk, get_Not_op(b), c, mode);
                                DBG_OPT_ALGSIM0(oldn, n, FS_OPT_SUB_C_NOT_X);
                                return n;
@@ -2764,12 +2741,12 @@ restart:
  */
 static ir_node *transform_node_Mul2n(ir_node *n, ir_mode *mode)
 {
-       ir_node *oldn = n;
-       ir_node *a = get_Mul_left(n);
-       ir_node *b = get_Mul_right(n);
-       tarval *ta = value_of(a);
-       tarval *tb = value_of(b);
-       ir_mode *smode = get_irn_mode(a);
+       ir_node   *oldn  = n;
+       ir_node   *a     = get_Mul_left(n);
+       ir_node   *b     = get_Mul_right(n);
+       ir_tarval *ta    = value_of(a);
+       ir_tarval *tb    = value_of(b);
+       ir_mode   *smode = get_irn_mode(a);
 
        if (ta == get_mode_one(smode)) {
                /* (L)1 * (L)b = (L)b */
@@ -2899,7 +2876,7 @@ static ir_node *transform_node_Mul(ir_node *n)
        }
        if (get_mode_arithmetic(mode) == irma_ieee754) {
                if (is_Const(a)) {
-                       tarval *tv = get_Const_tarval(a);
+                       ir_tarval *tv = get_Const_tarval(a);
                        if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)
                                        && !tarval_is_negative(tv)) {
                                /* 2.0 * b = b + b */
@@ -2909,7 +2886,7 @@ static ir_node *transform_node_Mul(ir_node *n)
                        }
                }
                else if (is_Const(b)) {
-                       tarval *tv = get_Const_tarval(b);
+                       ir_tarval *tv = get_Const_tarval(b);
                        if (tarval_ieee754_get_exponent(tv) == 1 && tarval_ieee754_zero_mantissa(tv)
                                        && !tarval_is_negative(tv)) {
                                /* a * 2.0 = a + a */
@@ -2961,13 +2938,14 @@ static ir_node *transform_node_Div(ir_node *n)
        value = n;
 
        if (a == b && value_not_zero(a, &dummy)) {
+               ir_graph *irg = get_irn_irg(n);
                /* BEWARE: we can optimize a/a to 1 only if this cannot cause a exception */
-               value = new_Const(get_mode_one(mode));
+               value = new_r_Const(irg, get_mode_one(mode));
                DBG_OPT_CSTEVAL(n, value);
                goto make_tuple;
        } else {
                if (mode_is_signed(mode) && is_Const(b)) {
-                       tarval *tv = get_Const_tarval(b);
+                       ir_tarval *tv = get_Const_tarval(b);
 
                        if (tv == get_mode_minus_one(mode)) {
                                /* a / -1 */
@@ -2982,18 +2960,20 @@ static ir_node *transform_node_Div(ir_node *n)
 
        if (value != n) {
                ir_node *mem, *blk;
+               ir_graph *irg;
 
 make_tuple:
                /* Turn Div into a tuple (mem, jmp, bad, value) */
                mem = get_Div_mem(n);
                blk = get_nodes_block(n);
+               irg = get_irn_irg(blk);
 
                /* skip a potential Pin */
                mem = skip_Pin(mem);
                turn_into_tuple(n, pn_Div_max);
                set_Tuple_pred(n, pn_Div_M,         mem);
                set_Tuple_pred(n, pn_Div_X_regular, new_r_Jmp(blk));
-               set_Tuple_pred(n, pn_Div_X_except,  new_Bad());
+               set_Tuple_pred(n, pn_Div_X_except,  get_irg_bad(irg));
                set_Tuple_pred(n, pn_Div_res,       value);
        }
        return n;
@@ -3004,11 +2984,12 @@ make_tuple:
  */
 static ir_node *transform_node_Mod(ir_node *n)
 {
-       ir_mode *mode = get_Mod_resmode(n);
-       ir_node *a = get_Mod_left(n);
-       ir_node *b = get_Mod_right(n);
-       ir_node *value;
-       tarval  *tv;
+       ir_mode   *mode = get_Mod_resmode(n);
+       ir_node   *a    = get_Mod_left(n);
+       ir_node   *b    = get_Mod_right(n);
+       ir_graph  *irg;
+       ir_node   *value;
+       ir_tarval *tv;
 
        if (is_Const(b) && is_const_Phi(a)) {
                /* check for Div(Phi, Const) */
@@ -3037,8 +3018,9 @@ static ir_node *transform_node_Mod(ir_node *n)
 
        value = n;
        tv = value_of(n);
+       irg = get_irn_irg(n);
        if (tv != tarval_bad) {
-               value = new_Const(tv);
+               value = new_r_Const(irg, tv);
 
                DBG_OPT_CSTEVAL(n, value);
                goto make_tuple;
@@ -3049,16 +3031,16 @@ static ir_node *transform_node_Mod(ir_node *n)
 
                if (a == b && value_not_zero(a, &dummy)) {
                        /* BEWARE: we can optimize a%a to 0 only if this cannot cause a exception */
-                       value = new_Const(get_mode_null(mode));
+                       value = new_r_Const(irg, get_mode_null(mode));
                        DBG_OPT_CSTEVAL(n, value);
                        goto make_tuple;
                } else {
                        if (mode_is_signed(mode) && is_Const(b)) {
-                               tarval *tv = get_Const_tarval(b);
+                               ir_tarval *tv = get_Const_tarval(b);
 
                                if (tv == get_mode_minus_one(mode)) {
                                        /* a % -1 = 0 */
-                                       value = new_Const(get_mode_null(mode));
+                                       value = new_r_Const(irg, get_mode_null(mode));
                                        DBG_OPT_CSTEVAL(n, value);
                                        goto make_tuple;
                                }
@@ -3070,18 +3052,20 @@ static ir_node *transform_node_Mod(ir_node *n)
 
        if (value != n) {
                ir_node *mem, *blk;
+               ir_graph *irg;
 
 make_tuple:
                /* Turn Mod into a tuple (mem, jmp, bad, value) */
                mem = get_Mod_mem(n);
                blk = get_nodes_block(n);
+               irg = get_irn_irg(blk);
 
                /* skip a potential Pin */
                mem = skip_Pin(mem);
                turn_into_tuple(n, pn_Mod_max);
                set_Tuple_pred(n, pn_Mod_M,         mem);
                set_Tuple_pred(n, pn_Mod_X_regular, new_r_Jmp(blk));
-               set_Tuple_pred(n, pn_Mod_X_except,  new_Bad());
+               set_Tuple_pred(n, pn_Mod_X_except,  get_irg_bad(irg));
                set_Tuple_pred(n, pn_Mod_res,       value);
        }
        return n;
@@ -3097,7 +3081,8 @@ static ir_node *transform_node_DivMod(ir_node *n)
        ir_node       *b = get_DivMod_right(n);
        ir_mode       *mode = get_DivMod_resmode(n);
        ir_node       *va, *vb;
-       tarval        *ta, *tb;
+       ir_graph      *irg = get_irn_irg(n);
+       ir_tarval     *ta, *tb;
        int           evaluated = 0;
 
        if (is_Const(b) && is_const_Phi(a)) {
@@ -3136,24 +3121,24 @@ static ir_node *transform_node_DivMod(ir_node *n)
        if (tb != tarval_bad) {
                if (tb == get_mode_one(get_tarval_mode(tb))) {
                        va = a;
-                       vb = new_Const(get_mode_null(mode));
+                       vb = new_r_Const(irg, get_mode_null(mode));
                        DBG_OPT_CSTEVAL(n, vb);
                        goto make_tuple;
                } else if (ta != tarval_bad) {
-                       tarval *resa, *resb;
+                       ir_tarval *resa, *resb;
                        resa = tarval_div(ta, tb);
                        if (resa == tarval_bad) return n; /* Causes exception!!! Model by replacing through
                                                             Jmp for X result!? */
                        resb = tarval_mod(ta, tb);
                        if (resb == tarval_bad) return n; /* Causes exception! */
-                       va = new_Const(resa);
-                       vb = new_Const(resb);
+                       va = new_r_Const(irg, resa);
+                       vb = new_r_Const(irg, resb);
                        DBG_OPT_CSTEVAL(n, va);
                        DBG_OPT_CSTEVAL(n, vb);
                        goto make_tuple;
                } else if (mode_is_signed(mode) && tb == get_mode_minus_one(mode)) {
                        va = new_rd_Minus(get_irn_dbg_info(n), get_nodes_block(n), a, mode);
-                       vb = new_Const(get_mode_null(mode));
+                       vb = new_r_Const(irg, get_mode_null(mode));
                        DBG_OPT_CSTEVAL(n, va);
                        DBG_OPT_CSTEVAL(n, vb);
                        goto make_tuple;
@@ -3166,8 +3151,8 @@ static ir_node *transform_node_DivMod(ir_node *n)
        } else if (a == b) {
                if (value_not_zero(a, &dummy)) {
                        /* a/a && a != 0 */
-                       va = new_Const(get_mode_one(mode));
-                       vb = new_Const(get_mode_null(mode));
+                       va = new_r_Const(irg, get_mode_one(mode));
+                       vb = new_r_Const(irg, get_mode_null(mode));
                        DBG_OPT_CSTEVAL(n, va);
                        DBG_OPT_CSTEVAL(n, vb);
                        goto make_tuple;
@@ -3193,7 +3178,7 @@ make_tuple:
                turn_into_tuple(n, pn_DivMod_max);
                set_Tuple_pred(n, pn_DivMod_M,         mem);
                set_Tuple_pred(n, pn_DivMod_X_regular, new_r_Jmp(blk));
-               set_Tuple_pred(n, pn_DivMod_X_except,  new_Bad());  /* no exception */
+               set_Tuple_pred(n, pn_DivMod_X_except,  get_irg_bad(irg)); /*no exception*/
                set_Tuple_pred(n, pn_DivMod_res_div,   va);
                set_Tuple_pred(n, pn_DivMod_res_mod,   vb);
        }
@@ -3210,8 +3195,8 @@ static ir_node *transform_node_Quot(ir_node *n)
        ir_node *oldn = n;
 
        if (get_mode_arithmetic(mode) == irma_ieee754) {
-               ir_node *b = get_Quot_right(n);
-               tarval *tv = value_of(b);
+               ir_node   *b  = get_Quot_right(n);
+               ir_tarval *tv = value_of(b);
 
                if (tv != tarval_bad) {
                        int rem = tarval_fp_ops_enabled();
@@ -3231,7 +3216,8 @@ static ir_node *transform_node_Quot(ir_node *n)
                        if (tv != tarval_bad &&
                            (tarval_ieee754_get_exact() || (get_irg_fp_model(get_irn_irg(n)) & fp_strict_algebraic) == 0)) {
                                ir_node *blk = get_nodes_block(n);
-                               ir_node *c = new_Const(tv);
+                               ir_graph *irg = get_irn_irg(blk);
+                               ir_node *c = new_r_Const(irg, tv);
                                ir_node *a = get_Quot_left(n);
                                ir_node *m = new_rd_Mul(get_irn_dbg_info(n), blk, a, c, mode);
                                ir_node *mem = get_Quot_mem(n);
@@ -3241,7 +3227,7 @@ static ir_node *transform_node_Quot(ir_node *n)
                                turn_into_tuple(n, pn_Quot_max);
                                set_Tuple_pred(n, pn_Quot_M, mem);
                                set_Tuple_pred(n, pn_Quot_X_regular, new_r_Jmp(blk));
-                               set_Tuple_pred(n, pn_Quot_X_except,  new_Bad());
+                               set_Tuple_pred(n, pn_Quot_X_except,  get_irg_bad(irg));
                                set_Tuple_pred(n, pn_Quot_res, m);
                                DBG_OPT_ALGSIM1(oldn, a, b, m, FS_OPT_FP_INV_MUL);
                        }
@@ -3285,10 +3271,10 @@ static ir_node *transform_node_Cmp(ir_node *n)
 static ir_node *transform_node_Cond(ir_node *n)
 {
 
-       ir_node *jmp;
-       ir_node *a = get_Cond_selector(n);
-       tarval *ta = value_of(a);
-       ir_graph *irg = get_irn_irg(n);
+       ir_node   *a   = get_Cond_selector(n);
+       ir_tarval *ta  = value_of(a);
+       ir_graph  *irg = get_irn_irg(n);
+       ir_node   *jmp;
 
        /* we need block info which is not available in floating irgs */
        if (get_irg_pinned(irg) == op_pin_state_floats)
@@ -3303,11 +3289,11 @@ static ir_node *transform_node_Cond(ir_node *n)
                jmp = new_r_Jmp(blk);
                turn_into_tuple(n, pn_Cond_max);
                if (ta == tarval_b_true) {
-                       set_Tuple_pred(n, pn_Cond_false, new_Bad());
+                       set_Tuple_pred(n, pn_Cond_false, get_irg_bad(irg));
                        set_Tuple_pred(n, pn_Cond_true, jmp);
                } else {
                        set_Tuple_pred(n, pn_Cond_false, jmp);
-                       set_Tuple_pred(n, pn_Cond_true, new_Bad());
+                       set_Tuple_pred(n, pn_Cond_true, get_irg_bad(irg));
                }
                /* We might generate an endless loop, so keep it alive. */
                add_End_keepalive(get_irg_end(irg), blk);
@@ -3446,8 +3432,8 @@ static ir_node *transform_node_And(ir_node *n)
                ir_node *pred_b = get_Proj_pred(b);
                if (pred_a == pred_b) {
                        dbg_info *dbgi  = get_irn_dbg_info(n);
-                       pn_Cmp pn_a     = get_Proj_proj(a);
-                       pn_Cmp pn_b     = get_Proj_proj(b);
+                       pn_Cmp pn_a     = get_Proj_pn_cmp(a);
+                       pn_Cmp pn_b     = get_Proj_pn_cmp(b);
                        /* yes, we can simply calculate with pncs */
                        pn_Cmp new_pnc  = pn_a & pn_b;
 
@@ -3619,8 +3605,8 @@ static ir_node *transform_node_Eor(ir_node *n)
                ir_node *pred_b = get_Proj_pred(b);
                if (pred_a == pred_b) {
                        dbg_info *dbgi  = get_irn_dbg_info(n);
-                       pn_Cmp pn_a     = get_Proj_proj(a);
-                       pn_Cmp pn_b     = get_Proj_proj(b);
+                       pn_Cmp pn_a     = get_Proj_pn_cmp(a);
+                       pn_Cmp pn_b     = get_Proj_pn_cmp(b);
                        /* yes, we can simply calculate with pncs */
                        pn_Cmp new_pnc  = pn_a ^ pn_b;
 
@@ -3736,10 +3722,11 @@ static ir_node *transform_node_Minus(ir_node *n)
                /* the following rules are only to twos-complement */
                if (is_Not(a)) {
                        /* -(~x) = x + 1 */
-                       ir_node *op   = get_Not_op(a);
-                       tarval *tv    = get_mode_one(mode);
-                       ir_node *blk  = get_nodes_block(n);
-                       ir_node *c    = new_Const(tv);
+                       ir_node   *op  = get_Not_op(a);
+                       ir_tarval *tv  = get_mode_one(mode);
+                       ir_node   *blk = get_nodes_block(n);
+                       ir_graph  *irg = get_irn_irg(blk);
+                       ir_node   *c   = new_r_Const(irg, tv);
                        n = new_rd_Add(get_irn_dbg_info(n), blk, op, c, mode);
                        DBG_OPT_ALGSIM2(oldn, a, n, FS_OPT_MINUS_NOT);
                        return n;
@@ -3748,7 +3735,7 @@ static ir_node *transform_node_Minus(ir_node *n)
                        ir_node *c = get_Shr_right(a);
 
                        if (is_Const(c)) {
-                               tarval *tv = get_Const_tarval(c);
+                               ir_tarval *tv = get_Const_tarval(c);
 
                                if (tarval_is_long(tv) && get_tarval_long(tv) == (int) get_mode_size_bits(mode) - 1) {
                                        /* -(a >>u (size-1)) = a >>s (size-1) */
@@ -3764,7 +3751,7 @@ static ir_node *transform_node_Minus(ir_node *n)
                        ir_node *c = get_Shrs_right(a);
 
                        if (is_Const(c)) {
-                               tarval *tv = get_Const_tarval(c);
+                               ir_tarval *tv = get_Const_tarval(c);
 
                                if (tarval_is_long(tv) && get_tarval_long(tv) == (int) get_mode_size_bits(mode) - 1) {
                                        /* -(a >>s (size-1)) = a >>u (size-1) */
@@ -3789,13 +3776,14 @@ static ir_node *transform_node_Minus(ir_node *n)
        }
 
        if (is_Mul(a)) { /* -(a * const) -> a * -const */
-               ir_node *mul_l = get_Mul_left(a);
-               ir_node *mul_r = get_Mul_right(a);
-               tarval  *tv    = value_of(mul_r);
+               ir_node   *mul_l = get_Mul_left(a);
+               ir_node   *mul_r = get_Mul_right(a);
+               ir_tarval *tv    = value_of(mul_r);
                if (tv != tarval_bad) {
                        tv = tarval_neg(tv);
                        if (tv != tarval_bad) {
-                               ir_node  *cnst  = new_Const(tv);
+                               ir_graph *irg   = get_irn_irg(n);
+                               ir_node  *cnst  = new_r_Const(irg, tv);
                                dbg_info *dbg   = get_irn_dbg_info(a);
                                ir_node  *block = get_nodes_block(a);
                                n = new_rd_Mul(dbg, block, mul_l, cnst, mode);
@@ -3808,29 +3796,6 @@ static ir_node *transform_node_Minus(ir_node *n)
        return n;
 }  /* transform_node_Minus */
 
-/**
- * Transform a Cast_type(Const) into a new Const_type
- */
-static ir_node *transform_node_Cast(ir_node *n)
-{
-       ir_node *oldn = n;
-       ir_node *pred = get_Cast_op(n);
-       ir_type *tp = get_irn_type(n);
-
-       if (is_Const(pred) && get_Const_type(pred) != tp) {
-               ir_graph *irg = get_irn_irg(n);
-               n = new_rd_Const_type(NULL, irg, get_Const_tarval(pred), tp);
-               DBG_OPT_CSTEVAL(oldn, n);
-       } else if (is_SymConst(pred) && get_SymConst_value_type(pred) != tp) {
-               ir_graph *irg = get_irn_irg(n);
-               n = new_rd_SymConst_type(NULL, irg, get_irn_mode(pred),
-                       get_SymConst_symbol(pred), get_SymConst_kind(pred), tp);
-               DBG_OPT_CSTEVAL(oldn, n);
-       }
-
-       return n;
-}  /* transform_node_Cast */
-
 /**
  * Transform a Proj(Load) with a non-null address.
  */
@@ -3922,10 +3887,12 @@ static ir_node *transform_node_Proj_Div(ir_node *proj)
                case pn_Div_X_regular:
                        return new_r_Jmp(get_nodes_block(div));
 
-               case pn_Div_X_except:
+               case pn_Div_X_except: {
+                       ir_graph *irg = get_irn_irg(proj);
                        /* we found an exception handler, remove it */
                        DBG_OPT_EXC_REM(proj);
-                       return new_Bad();
+                       return get_irg_bad(irg);
+               }
 
                case pn_Div_M: {
                        ir_graph *irg = get_irn_irg(proj);
@@ -3975,10 +3942,12 @@ static ir_node *transform_node_Proj_Mod(ir_node *proj)
                case pn_Mod_X_regular:
                        return new_r_Jmp(get_irn_n(mod, -1));
 
-               case pn_Mod_X_except:
+               case pn_Mod_X_except: {
+                       ir_graph *irg = get_irn_irg(proj);
                        /* we found an exception handler, remove it */
                        DBG_OPT_EXC_REM(proj);
-                       return new_Bad();
+                       return get_irg_bad(irg);
+               }
 
                case pn_Mod_M: {
                        ir_graph *irg = get_irn_irg(proj);
@@ -3996,8 +3965,9 @@ static ir_node *transform_node_Proj_Mod(ir_node *proj)
                case pn_Mod_res:
                        if (get_Mod_left(mod) == b) {
                                /* a % a = 0 if a != 0 */
-                               ir_mode *mode = get_irn_mode(proj);
-                               ir_node *res  = new_Const(get_mode_null(mode));
+                               ir_graph *irg  = get_irn_irg(proj);
+                               ir_mode  *mode = get_irn_mode(proj);
+                               ir_node  *res  = new_r_Const(irg, get_mode_null(mode));
 
                                DBG_OPT_CSTEVAL(mod, res);
                                return res;
@@ -4036,10 +4006,12 @@ static ir_node *transform_node_Proj_DivMod(ir_node *proj)
                case pn_DivMod_X_regular:
                        return new_r_Jmp(get_nodes_block(divmod));
 
-               case pn_DivMod_X_except:
+               case pn_DivMod_X_except: {
                        /* we found an exception handler, remove it */
+                       ir_graph *irg = get_irn_irg(proj);
                        DBG_OPT_EXC_REM(proj);
-                       return new_Bad();
+                       return get_irg_bad(irg);
+               }
 
                case pn_DivMod_M: {
                        ir_graph *irg = get_irn_irg(proj);
@@ -4058,8 +4030,9 @@ static ir_node *transform_node_Proj_DivMod(ir_node *proj)
                case pn_DivMod_res_mod:
                        if (get_DivMod_left(divmod) == b) {
                                /* a % a = 0 if a != 0 */
-                               ir_mode *mode = get_irn_mode(proj);
-                               ir_node *res  = new_Const(get_mode_null(mode));
+                               ir_graph *irg  = get_irn_irg(proj);
+                               ir_mode  *mode = get_irn_mode(proj);
+                               ir_node  *res  = new_r_Const(irg, get_mode_null(mode));
 
                                DBG_OPT_CSTEVAL(divmod, res);
                                return res;
@@ -4079,7 +4052,7 @@ static ir_node *transform_node_Proj_Cond(ir_node *proj)
                ir_node *b = get_Cond_selector(n);
 
                if (mode_is_int(get_irn_mode(b))) {
-                       tarval *tb = value_of(b);
+                       ir_tarval *tb = value_of(b);
 
                        if (tb != tarval_bad) {
                                /* we have a constant switch */
@@ -4101,7 +4074,7 @@ static ir_node *transform_node_Proj_Cond(ir_node *proj)
                                vrp_attr *b_vrp = vrp_get_info(b);
                                if (num != get_Cond_default_proj(n) && b_vrp) {
                                        /* Try handling with vrp data. We only remove dead parts. */
-                                       tarval *tp = new_tarval_from_long(num, get_irn_mode(b));
+                                       ir_tarval *tp = new_tarval_from_long(num, get_irn_mode(b));
 
                                        if (b_vrp->range_type == VRP_RANGE) {
                                                pn_Cmp cmp_result = tarval_cmp(b_vrp->range_bottom, tp);
@@ -4152,10 +4125,10 @@ static ir_node *transform_node_Proj_Cond(ir_node *proj)
 /**
  * Create a 0 constant of given mode.
  */
-static ir_node *create_zero_const(ir_mode *mode)
+static ir_node *create_zero_const(ir_graph *irg, ir_mode *mode)
 {
-       tarval   *tv    = get_mode_null(mode);
-       ir_node  *cnst  = new_Const(tv);
+       ir_tarval *tv   = get_mode_null(mode);
+       ir_node   *cnst = new_r_Const(irg, tv);
 
        return cnst;
 }
@@ -4165,23 +4138,29 @@ static ir_node *create_zero_const(ir_mode *mode)
  */
 static ir_node *transform_node_Proj_Cmp(ir_node *proj)
 {
-       ir_node      *n      = get_Proj_pred(proj);
-       ir_node      *left   = get_Cmp_left(n);
-       ir_node      *right  = get_Cmp_right(n);
-       tarval      *tv      = NULL;
+       ir_node     *n       = get_Proj_pred(proj);
+       ir_node     *left    = get_Cmp_left(n);
+       ir_node     *right   = get_Cmp_right(n);
+       ir_tarval   *tv      = NULL;
        int          changed = 0;
        ir_mode     *mode    = NULL;
        long         proj_nr = get_Proj_proj(proj);
 
        /* we can evaluate some cases directly */
        switch (proj_nr) {
-       case pn_Cmp_False:
-               return new_Const(get_tarval_b_false());
-       case pn_Cmp_True:
-               return new_Const(get_tarval_b_true());
+       case pn_Cmp_False: {
+               ir_graph *irg = get_irn_irg(proj);
+               return new_r_Const(irg, get_tarval_b_false());
+       }
+       case pn_Cmp_True: {
+               ir_graph *irg = get_irn_irg(proj);
+               return new_r_Const(irg, get_tarval_b_true());
+       }
        case pn_Cmp_Leg:
-               if (!mode_is_float(get_irn_mode(left)))
-                       return new_Const(get_tarval_b_true());
+               if (!mode_is_float(get_irn_mode(left))) {
+                       ir_graph *irg = get_irn_irg(proj);
+                       return new_r_Const(irg, get_tarval_b_true());
+               }
                break;
        default:
                break;
@@ -4322,8 +4301,9 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                        lr = tmp;
                                }
                                if (ll == right) {
+                                       ir_graph *irg = get_irn_irg(n);
                                        left     = lr;
-                                       right    = create_zero_const(get_irn_mode(left));
+                                       right    = create_zero_const(irg, get_irn_mode(left));
                                        changed |= 1;
                                        DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
                                }
@@ -4338,8 +4318,9 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                        rr = tmp;
                                }
                                if (rl == left) {
+                                       ir_graph *irg = get_irn_irg(n);
                                        left     = rr;
-                                       right    = create_zero_const(get_irn_mode(left));
+                                       right    = create_zero_const(irg, get_irn_mode(left));
                                        changed |= 1;
                                        DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_OP_OP);
                                }
@@ -4355,15 +4336,16 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                        ir_node *llr = get_Shr_right(ll);
                                        if (is_Const(llr)) {
                                                dbg_info *dbg = get_irn_dbg_info(left);
+                                               ir_graph *irg = get_irn_irg(left);
 
-                                               tarval *c1    = get_Const_tarval(llr);
-                                               tarval *c2    = get_Const_tarval(lr);
-                                               tarval *c3    = get_Const_tarval(right);
-                                               tarval *mask  = tarval_shl(c2, c1);
-                                               tarval *value = tarval_shl(c3, c1);
+                                               ir_tarval *c1    = get_Const_tarval(llr);
+                                               ir_tarval *c2    = get_Const_tarval(lr);
+                                               ir_tarval *c3    = get_Const_tarval(right);
+                                               ir_tarval *mask  = tarval_shl(c2, c1);
+                                               ir_tarval *value = tarval_shl(c3, c1);
 
-                                               left  = new_rd_And(dbg, block, get_Shr_left(ll), new_Const(mask), mode);
-                                               right = new_Const(value);
+                                               left  = new_rd_And(dbg, block, get_Shr_left(ll), new_r_Const(irg, mask), mode);
+                                               right = new_r_Const(irg, value);
                                                changed |= 1;
                                        }
                                }
@@ -4527,7 +4509,7 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                                /* a-c1 == c2  ==>  a == c2+c1,  a-c1 != c2  ==>  a != c2+c1 */
                                                if (is_Sub(left)) {
                                                        ir_node *c1 = get_Sub_right(left);
-                                                       tarval *tv2 = value_of(c1);
+                                                       ir_tarval *tv2 = value_of(c1);
 
                                                        if (tv2 != tarval_bad) {
                                                                tv2 = tarval_add(tv, value_of(c1));
@@ -4545,7 +4527,7 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                                        ir_node *a_l = get_Add_left(left);
                                                        ir_node *a_r = get_Add_right(left);
                                                        ir_node *a;
-                                                       tarval *tv2;
+                                                       ir_tarval *tv2;
 
                                                        if (is_Const(a_l)) {
                                                                a = a_r;
@@ -4568,7 +4550,7 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                                }
                                                /* -a == c ==> a == -c, -a != c ==> a != -c */
                                                else if (is_Minus(left)) {
-                                                       tarval *tv2 = tarval_sub(get_mode_null(mode), tv, NULL);
+                                                       ir_tarval *tv2 = tarval_sub(get_mode_null(mode), tv, NULL);
 
                                                        if (tv2 != tarval_bad) {
                                                                left    = get_Minus_op(left);
@@ -4592,11 +4574,12 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                                 * And(x, C1) == C2 ==> FALSE if C2 & C1 != C2
                                                 * And(x, C1) != C2 ==> TRUE if C2 & C1 != C2
                                                 */
-                                               tarval *mask = tarval_and(get_Const_tarval(c1), tv);
+                                               ir_tarval *mask = tarval_and(get_Const_tarval(c1), tv);
                                                if (mask != tv) {
                                                        /* TODO: move to constant evaluation */
+                                                       ir_graph *irg = get_irn_irg(n);
                                                        tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
-                                                       c1 = new_Const(tv);
+                                                       c1 = new_r_Const(irg, tv);
                                                        DBG_OPT_CSTEVAL(proj, c1);
                                                        return c1;
                                                }
@@ -4632,8 +4615,9 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                                 */
                                                if (! tarval_is_null(get_Const_tarval(c1))) {
                                                        /* TODO: move to constant evaluation */
+                                                       ir_graph *irg = get_irn_irg(n);
                                                        tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
-                                                       c1 = new_Const(tv);
+                                                       c1 = new_r_Const(irg, tv);
                                                        DBG_OPT_CSTEVAL(proj, c1);
                                                        return c1;
                                                }
@@ -4648,23 +4632,24 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                         */
                                        c1 = get_Shl_right(left);
                                        if (is_Const(c1)) {
-                                               tarval  *tv1    = get_Const_tarval(c1);
-                                               ir_mode *mode   = get_irn_mode(left);
-                                               tarval  *minus1 = get_mode_all_one(mode);
-                                               tarval  *amask  = tarval_shr(minus1, tv1);
-                                               tarval  *cmask  = tarval_shl(minus1, tv1);
-                                               ir_node *sl, *blk;
+                                               ir_graph  *irg    = get_irn_irg(c1);
+                                               ir_tarval *tv1    = get_Const_tarval(c1);
+                                               ir_mode   *mode   = get_irn_mode(left);
+                                               ir_tarval *minus1 = get_mode_all_one(mode);
+                                               ir_tarval *amask  = tarval_shr(minus1, tv1);
+                                               ir_tarval *cmask  = tarval_shl(minus1, tv1);
+                                               ir_node   *sl, *blk;
 
                                                if (tarval_and(tv, cmask) != tv) {
                                                        /* condition not met */
                                                        tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
-                                                       c1 = new_Const(tv);
+                                                       c1 = new_r_Const(irg, tv);
                                                        DBG_OPT_CSTEVAL(proj, c1);
                                                        return c1;
                                                }
                                                sl   = get_Shl_left(left);
                                                blk  = get_nodes_block(n);
-                                               left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_Const(amask), mode);
+                                               left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_r_Const(irg, amask), mode);
                                                tv   = tarval_shr(tv, tv1);
                                                changed |= 2;
                                                DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_SHF_TO_AND);
@@ -4679,23 +4664,24 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                         */
                                        c1 = get_Shr_right(left);
                                        if (is_Const(c1)) {
-                                               tarval  *tv1    = get_Const_tarval(c1);
-                                               ir_mode *mode   = get_irn_mode(left);
-                                               tarval  *minus1 = get_mode_all_one(mode);
-                                               tarval  *amask  = tarval_shl(minus1, tv1);
-                                               tarval  *cmask  = tarval_shr(minus1, tv1);
-                                               ir_node *sl, *blk;
+                                               ir_graph  *irg    = get_irn_irg(c1);
+                                               ir_tarval *tv1    = get_Const_tarval(c1);
+                                               ir_mode   *mode   = get_irn_mode(left);
+                                               ir_tarval *minus1 = get_mode_all_one(mode);
+                                               ir_tarval *amask  = tarval_shl(minus1, tv1);
+                                               ir_tarval *cmask  = tarval_shr(minus1, tv1);
+                                               ir_node   *sl, *blk;
 
                                                if (tarval_and(tv, cmask) != tv) {
                                                        /* condition not met */
                                                        tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
-                                                       c1 = new_Const(tv);
+                                                       c1 = new_r_Const(irg, tv);
                                                        DBG_OPT_CSTEVAL(proj, c1);
                                                        return c1;
                                                }
                                                sl   = get_Shr_left(left);
                                                blk  = get_nodes_block(n);
-                                               left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_Const(amask), mode);
+                                               left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_r_Const(irg, amask), mode);
                                                tv   = tarval_shl(tv, tv1);
                                                changed |= 2;
                                                DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_SHF_TO_AND);
@@ -4710,11 +4696,12 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                         */
                                        c1 = get_Shrs_right(left);
                                        if (is_Const(c1)) {
-                                               tarval  *tv1    = get_Const_tarval(c1);
-                                               ir_mode *mode   = get_irn_mode(left);
-                                               tarval  *minus1 = get_mode_all_one(mode);
-                                               tarval  *amask  = tarval_shl(minus1, tv1);
-                                               tarval  *cond   = new_tarval_from_long(get_mode_size_bits(mode), get_tarval_mode(tv1));
+                                               ir_graph  *irg    = get_irn_irg(c1);
+                                               ir_tarval *tv1    = get_Const_tarval(c1);
+                                               ir_mode   *mode   = get_irn_mode(left);
+                                               ir_tarval *minus1 = get_mode_all_one(mode);
+                                               ir_tarval *amask  = tarval_shl(minus1, tv1);
+                                               ir_tarval *cond   = new_tarval_from_long(get_mode_size_bits(mode), get_tarval_mode(tv1));
                                                ir_node *sl, *blk;
 
                                                cond = tarval_sub(cond, tv1, NULL);
@@ -4723,13 +4710,13 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                                                if (!tarval_is_all_one(cond) && !tarval_is_null(cond)) {
                                                        /* condition not met */
                                                        tv = proj_nr == pn_Cmp_Eq ? get_tarval_b_false() : get_tarval_b_true();
-                                                       c1 = new_Const(tv);
+                                                       c1 = new_r_Const(irg, tv);
                                                        DBG_OPT_CSTEVAL(proj, c1);
                                                        return c1;
                                                }
                                                sl   = get_Shrs_left(left);
                                                blk  = get_nodes_block(n);
-                                               left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_Const(amask), mode);
+                                               left = new_rd_And(get_irn_dbg_info(left), blk, sl, new_r_Const(irg, amask), mode);
                                                tv   = tarval_shl(tv, tv1);
                                                changed |= 2;
                                                DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_SHF_TO_AND);
@@ -4740,8 +4727,10 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                } /* tarval != bad */
        }
 
-       if (changed & 2)      /* need a new Const */
-               right = new_Const(tv);
+       if (changed & 2) {     /* need a new Const */
+               ir_graph *irg = get_irn_irg(n);
+               right = new_r_Const(irg, tv);
+       }
 
        if ((proj_nr == pn_Cmp_Eq || proj_nr == pn_Cmp_Lg) && is_Const(right) && is_Const_null(right) && is_Proj(left)) {
                ir_node *op = get_Proj_pred(left);
@@ -4751,16 +4740,17 @@ static ir_node *transform_node_Proj_Cmp(ir_node *proj)
                        ir_node *c = get_binop_right(op);
 
                        if (is_Const(c)) {
-                               tarval *tv = get_Const_tarval(c);
+                               ir_tarval *tv = get_Const_tarval(c);
 
                                if (tarval_is_single_bit(tv)) {
                                        /* special case: (x % 2^n) CMP 0 ==> x & (2^n-1) CMP 0 */
                                        ir_node *v    = get_binop_left(op);
                                        ir_node *blk  = get_irn_n(op, -1);
+                                       ir_graph *irg = get_irn_irg(op);
                                        ir_mode *mode = get_irn_mode(v);
 
                                        tv = tarval_sub(tv, get_mode_one(mode), NULL);
-                                       left = new_rd_And(get_irn_dbg_info(op), blk, v, new_Const(tv), mode);
+                                       left = new_rd_And(get_irn_dbg_info(op), blk, v, new_r_Const(irg, tv), mode);
                                        changed |= 1;
                                        DBG_OPT_ALGSIM0(n, n, FS_OPT_CMP_MOD_TO_AND);
                                }
@@ -4890,7 +4880,7 @@ static ir_node *transform_node_Phi(ir_node *phi)
                /* Beware of Phi0 */
                if (n > 0) {
                        ir_node *pred = get_irn_n(phi, 0);
-                       ir_node *bound, *new_Phi, *block, **in;
+                       ir_node *bound, *new_phi, *block, **in;
                        pn_Cmp  pnc;
 
                        if (! is_Confirm(pred))
@@ -4913,8 +4903,8 @@ static ir_node *transform_node_Phi(ir_node *phi)
                        }
                        /* move the Confirm nodes "behind" the Phi */
                        block = get_irn_n(phi, -1);
-                       new_Phi = new_r_Phi(block, n, in, get_irn_mode(phi));
-                       return new_r_Confirm(block, new_Phi, bound, pnc);
+                       new_phi = new_r_Phi(block, n, in, get_irn_mode(phi));
+                       return new_r_Confirm(block, new_phi, bound, pnc);
                }
        }
        return phi;
@@ -4955,25 +4945,26 @@ static void get_comm_Binop_Ops(ir_node *binop, ir_node **a, ir_node **c)
  *     AND   c1    ===>           OR     if (c1 | c2) == 0x111..11
  *        OR
  */
-static ir_node *transform_node_Or_bf_store(ir_node *or)
+static ir_node *transform_node_Or_bf_store(ir_node *irn_or)
 {
-       ir_node *and, *c1;
+       ir_node *irn_and, *c1;
        ir_node *or_l, *c2;
        ir_node *and_l, *c3;
        ir_node *value, *c4;
        ir_node *new_and, *new_const, *block;
-       ir_mode *mode = get_irn_mode(or);
+       ir_mode *mode = get_irn_mode(irn_or);
 
-       tarval *tv1, *tv2, *tv3, *tv4, *tv;
+       ir_tarval *tv1, *tv2, *tv3, *tv4, *tv;
 
        for (;;) {
-               get_comm_Binop_Ops(or, &and, &c1);
-               if (!is_Const(c1) || !is_And(and))
-                       return or;
+               ir_graph *irg;
+               get_comm_Binop_Ops(irn_or, &irn_and, &c1);
+               if (!is_Const(c1) || !is_And(irn_and))
+                       return irn_or;
 
-               get_comm_Binop_Ops(and, &or_l, &c2);
+               get_comm_Binop_Ops(irn_and, &or_l, &c2);
                if (!is_Const(c2))
-                       return or;
+                       return irn_or;
 
                tv1 = get_Const_tarval(c1);
                tv2 = get_Const_tarval(c2);
@@ -4981,26 +4972,26 @@ static ir_node *transform_node_Or_bf_store(ir_node *or)
                tv = tarval_or(tv1, tv2);
                if (tarval_is_all_one(tv)) {
                        /* the AND does NOT clear a bit with isn't set by the OR */
-                       set_Or_left(or, or_l);
-                       set_Or_right(or, c1);
+                       set_Or_left(irn_or, or_l);
+                       set_Or_right(irn_or, c1);
 
                        /* check for more */
                        continue;
                }
 
                if (!is_Or(or_l))
-                       return or;
+                       return irn_or;
 
                get_comm_Binop_Ops(or_l, &and_l, &c3);
                if (!is_Const(c3) || !is_And(and_l))
-                       return or;
+                       return irn_or;
 
                get_comm_Binop_Ops(and_l, &value, &c4);
                if (!is_Const(c4))
-                       return or;
+                       return irn_or;
 
                /* ok, found the pattern, check for conditions */
-               assert(mode == get_irn_mode(and));
+               assert(mode == get_irn_mode(irn_and));
                assert(mode == get_irn_mode(or_l));
                assert(mode == get_irn_mode(and_l));
 
@@ -5010,28 +5001,29 @@ static ir_node *transform_node_Or_bf_store(ir_node *or)
                tv = tarval_or(tv4, tv2);
                if (!tarval_is_all_one(tv)) {
                        /* have at least one 0 at the same bit position */
-                       return or;
+                       return irn_or;
                }
 
                if (tv3 != tarval_andnot(tv3, tv4)) {
                        /* bit in the or_mask is outside the and_mask */
-                       return or;
+                       return irn_or;
                }
 
                if (tv1 != tarval_andnot(tv1, tv2)) {
                        /* bit in the or_mask is outside the and_mask */
-                       return or;
+                       return irn_or;
                }
 
                /* ok, all conditions met */
-               block = get_irn_n(or, -1);
+               block = get_irn_n(irn_or, -1);
+               irg   = get_irn_irg(block);
 
-               new_and = new_r_And(block, value, new_Const(tarval_and(tv4, tv2)), mode);
+               new_and = new_r_And(block, value, new_r_Const(irg, tarval_and(tv4, tv2)), mode);
 
-               new_const = new_Const(tarval_or(tv3, tv1));
+               new_const = new_r_Const(irg, tarval_or(tv3, tv1));
 
-               set_Or_left(or, new_and);
-               set_Or_right(or, new_const);
+               set_Or_left(irn_or, new_and);
+               set_Or_right(irn_or, new_const);
 
                /* check for more */
        }
@@ -5040,73 +5032,73 @@ static ir_node *transform_node_Or_bf_store(ir_node *or)
 /**
  * Optimize an Or(shl(x, c), shr(x, bits - c)) into a Rotl
  */
-static ir_node *transform_node_Or_Rotl(ir_node *or)
+static ir_node *transform_node_Or_Rotl(ir_node *irn_or)
 {
-       ir_mode *mode = get_irn_mode(or);
+       ir_mode *mode = get_irn_mode(irn_or);
        ir_node *shl, *shr, *block;
        ir_node *irn, *x, *c1, *c2, *n;
-       tarval *tv1, *tv2;
+       ir_tarval *tv1, *tv2;
 
        /* some backends can't handle rotl */
        if (!be_get_backend_param()->support_rotl)
-               return or;
+               return irn_or;
 
        if (! mode_is_int(mode))
-               return or;
+               return irn_or;
 
-       shl = get_binop_left(or);
-       shr = get_binop_right(or);
+       shl = get_binop_left(irn_or);
+       shr = get_binop_right(irn_or);
 
        if (is_Shr(shl)) {
                if (!is_Shl(shr))
-                       return or;
+                       return irn_or;
 
                irn = shl;
                shl = shr;
                shr = irn;
        } else if (!is_Shl(shl)) {
-               return or;
+               return irn_or;
        } else if (!is_Shr(shr)) {
-               return or;
+               return irn_or;
        }
        x = get_Shl_left(shl);
        if (x != get_Shr_left(shr))
-               return or;
+               return irn_or;
 
        c1 = get_Shl_right(shl);
        c2 = get_Shr_right(shr);
        if (is_Const(c1) && is_Const(c2)) {
                tv1 = get_Const_tarval(c1);
                if (! tarval_is_long(tv1))
-                       return or;
+                       return irn_or;
 
                tv2 = get_Const_tarval(c2);
                if (! tarval_is_long(tv2))
-                       return or;
+                       return irn_or;
 
                if (get_tarval_long(tv1) + get_tarval_long(tv2)
                                != (int) get_mode_size_bits(mode))
-                       return or;
+                       return irn_or;
 
                /* yet, condition met */
-               block = get_nodes_block(or);
+               block = get_nodes_block(irn_or);
 
                n = new_r_Rotl(block, x, c1, mode);
 
-               DBG_OPT_ALGSIM1(or, shl, shr, n, FS_OPT_OR_SHFT_TO_ROTL);
+               DBG_OPT_ALGSIM1(irn_or, shl, shr, n, FS_OPT_OR_SHFT_TO_ROTL);
                return n;
        }
 
        /* Note: the obvious rot formulation (a << x) | (a >> (32-x)) gets
         * transformed to (a << x) | (a >> -x) by transform_node_shift_modulo() */
        if (!is_negated_value(c1, c2)) {
-               return or;
+               return irn_or;
        }
 
        /* yet, condition met */
-       block = get_nodes_block(or);
+       block = get_nodes_block(irn_or);
        n = new_r_Rotl(block, x, c1, mode);
-       DBG_OPT_ALGSIM0(or, n, FS_OPT_OR_SHFT_TO_ROTL);
+       DBG_OPT_ALGSIM0(irn_or, n, FS_OPT_OR_SHFT_TO_ROTL);
        return n;
 }  /* transform_node_Or_Rotl */
 
@@ -5139,8 +5131,8 @@ static ir_node *transform_node_Or(ir_node *n)
                ir_node *pred_b = get_Proj_pred(b);
                if (pred_a == pred_b) {
                        dbg_info *dbgi  = get_irn_dbg_info(n);
-                       pn_Cmp pn_a     = get_Proj_proj(a);
-                       pn_Cmp pn_b     = get_Proj_proj(b);
+                       pn_Cmp pn_a     = get_Proj_pn_cmp(a);
+                       pn_Cmp pn_b     = get_Proj_pn_cmp(b);
                        /* yes, we can simply calculate with pncs */
                        pn_Cmp new_pnc  = pn_a | pn_b;
 
@@ -5174,8 +5166,9 @@ static ir_node *transform_node_shift(ir_node *n)
 {
        ir_node *left, *right;
        ir_mode *mode;
-       tarval *tv1, *tv2, *res;
+       ir_tarval *tv1, *tv2, *res;
        ir_node *in[2], *irn, *block;
+       ir_graph *irg;
 
        left = get_binop_left(n);
 
@@ -5194,13 +5187,14 @@ static ir_node *transform_node_shift(ir_node *n)
 
        res  = tarval_add(tv1, tv2);
        mode = get_irn_mode(n);
+       irg  = get_irn_irg(n);
 
        /* beware: a simple replacement works only, if res < modulo shift */
        if (!is_Rotl(n)) {
                int modulo_shf = get_mode_modulo_shift(mode);
                if (modulo_shf > 0) {
-                       tarval *modulo = new_tarval_from_long(modulo_shf,
-                                                             get_tarval_mode(res));
+                       ir_tarval *modulo = new_tarval_from_long(modulo_shf,
+                                                                get_tarval_mode(res));
 
                        assert(modulo_shf >= (int) get_mode_size_bits(mode));
 
@@ -5210,11 +5204,11 @@ static ir_node *transform_node_shift(ir_node *n)
                                        ir_node  *block = get_nodes_block(n);
                                        dbg_info *dbgi  = get_irn_dbg_info(n);
                                        ir_mode  *smode  = get_irn_mode(right);
-                                       ir_node  *cnst  = new_Const_long(smode, get_mode_size_bits(mode) - 1);
+                                       ir_node  *cnst  = new_r_Const_long(irg, smode, get_mode_size_bits(mode) - 1);
                                        return new_rd_Shrs(dbgi, block, get_binop_left(left), cnst, mode);
                                }
 
-                               return new_Const(get_mode_null(mode));
+                               return new_r_Const(irg, get_mode_null(mode));
                        }
                }
        } else {
@@ -5225,7 +5219,7 @@ static ir_node *transform_node_shift(ir_node *n)
        block = get_nodes_block(n);
 
        in[0] = get_binop_left(left);
-       in[1] = new_Const(res);
+       in[1] = new_r_Const(irg, res);
 
        irn = new_ir_node(NULL, get_Block_irg(block), block, get_irn_op(n), mode, 2, in);
 
@@ -5243,20 +5237,21 @@ static ir_node *transform_node_shift(ir_node *n)
  */
 static ir_node *transform_node_bitop_shift(ir_node *n)
 {
-       ir_node  *left;
-       ir_node  *right = get_binop_right(n);
-       ir_mode  *mode  = get_irn_mode(n);
-       ir_node  *bitop_left;
-       ir_node  *bitop_right;
-       ir_op    *op_left;
-       ir_node  *block;
-       dbg_info *dbgi;
-       ir_node  *new_shift;
-       ir_node  *new_bitop;
-       ir_node  *new_const;
-       tarval   *tv1;
-       tarval   *tv2;
-       tarval   *tv_shift;
+       ir_node   *left;
+       ir_node   *right = get_binop_right(n);
+       ir_mode   *mode  = get_irn_mode(n);
+       ir_node   *bitop_left;
+       ir_node   *bitop_right;
+       ir_op     *op_left;
+       ir_node   *block;
+       dbg_info  *dbgi;
+       ir_graph  *irg;
+       ir_node   *new_shift;
+       ir_node   *new_bitop;
+       ir_node   *new_const;
+       ir_tarval *tv1;
+       ir_tarval *tv2;
+       ir_tarval *tv_shift;
 
        assert(is_Shrs(n) || is_Shr(n) || is_Shl(n) || is_Rotl(n));
 
@@ -5303,7 +5298,8 @@ static ir_node *transform_node_bitop_shift(ir_node *n)
        }
 
        assert(get_tarval_mode(tv_shift) == mode);
-       new_const = new_Const(tv_shift);
+       irg       = get_irn_irg(n);
+       new_const = new_r_Const(irg, tv_shift);
 
        if (op_left == op_And) {
                new_bitop = new_rd_And(dbgi, block, new_shift, new_const, mode);
@@ -5326,21 +5322,22 @@ static ir_node *transform_node_bitop_shift(ir_node *n)
  */
 static ir_node *transform_node_shl_shr(ir_node *n)
 {
-       ir_node  *left;
-       ir_node  *right = get_binop_right(n);
-       ir_node  *x;
-       ir_node  *block;
-       ir_mode  *mode;
-       dbg_info *dbgi;
-       ir_node  *new_const;
-       ir_node  *new_shift;
-       ir_node  *new_and;
-       tarval   *tv_shl;
-       tarval   *tv_shr;
-       tarval   *tv_shift;
-       tarval   *tv_mask;
-       pn_Cmp    pnc;
-       int       need_shrs = 0;
+       ir_node   *left;
+       ir_node   *right = get_binop_right(n);
+       ir_node   *x;
+       ir_node   *block;
+       ir_mode   *mode;
+       dbg_info  *dbgi;
+       ir_node   *new_const;
+       ir_node   *new_shift;
+       ir_node   *new_and;
+       ir_tarval *tv_shl;
+       ir_tarval *tv_shr;
+       ir_tarval *tv_shift;
+       ir_tarval *tv_mask;
+       ir_graph  *irg;
+       pn_Cmp     pnc;
+       int        need_shrs = 0;
 
        assert(is_Shl(n) || is_Shr(n) || is_Shrs(n));
 
@@ -5394,12 +5391,13 @@ static ir_node *transform_node_shl_shr(ir_node *n)
        assert(get_tarval_mode(tv_mask) == mode);
 
        block = get_nodes_block(n);
+       irg   = get_irn_irg(block);
        dbgi  = get_irn_dbg_info(n);
 
        pnc = tarval_cmp(tv_shl, tv_shr);
        if (pnc == pn_Cmp_Lt || pnc == pn_Cmp_Eq) {
                tv_shift  = tarval_sub(tv_shr, tv_shl, NULL);
-               new_const = new_Const(tv_shift);
+               new_const = new_r_Const(irg, tv_shift);
                if (need_shrs) {
                        new_shift = new_rd_Shrs(dbgi, block, x, new_const, mode);
                } else {
@@ -5408,20 +5406,20 @@ static ir_node *transform_node_shl_shr(ir_node *n)
        } else {
                assert(pnc == pn_Cmp_Gt);
                tv_shift  = tarval_sub(tv_shl, tv_shr, NULL);
-               new_const = new_Const(tv_shift);
+               new_const = new_r_Const(irg, tv_shift);
                new_shift = new_rd_Shl(dbgi, block, x, new_const, mode);
        }
 
-       new_const = new_Const(tv_mask);
+       new_const = new_r_Const(irg, tv_mask);
        new_and   = new_rd_And(dbgi, block, new_shift, new_const, mode);
 
        return new_and;
 }
 
-static tarval *get_modulo_tv_value(tarval *tv, int modulo_val)
+static ir_tarval *get_modulo_tv_value(ir_tarval *tv, int modulo_val)
 {
-       ir_mode *mode      = get_tarval_mode(tv);
-       tarval  *modulo_tv = new_tarval_from_long(modulo_val, mode);
+       ir_mode   *mode      = get_tarval_mode(tv);
+       ir_tarval *modulo_tv = new_tarval_from_long(modulo_val, mode);
        return tarval_mod(tv, modulo_tv);
 }
 
@@ -5458,8 +5456,8 @@ static ir_node *transform_node_shift_modulo(ir_node *n,
        right      = get_binop_right(n);
        mode_right = get_irn_mode(right);
        if (is_Const(right)) {
-               tarval   *tv     = get_Const_tarval(right);
-               tarval   *tv_mod = get_modulo_tv_value(tv, modulo);
+               ir_tarval *tv     = get_Const_tarval(right);
+               ir_tarval *tv_mod = get_modulo_tv_value(tv, modulo);
 
                if (tv_mod == tv)
                        return n;
@@ -5468,9 +5466,9 @@ static ir_node *transform_node_shift_modulo(ir_node *n,
        } else if (is_Add(right)) {
                ir_node *add_right = get_Add_right(right);
                if (is_Const(add_right)) {
-                       tarval   *tv     = get_Const_tarval(add_right);
-                       tarval   *tv_mod = get_modulo_tv_value(tv, modulo);
-                       ir_node  *newconst;
+                       ir_tarval *tv     = get_Const_tarval(add_right);
+                       ir_tarval *tv_mod = get_modulo_tv_value(tv, modulo);
+                       ir_node   *newconst;
                        if (tv_mod == tv)
                                return n;
 
@@ -5481,8 +5479,8 @@ static ir_node *transform_node_shift_modulo(ir_node *n,
        } else if (is_Sub(right)) {
                ir_node *sub_left = get_Sub_left(right);
                if (is_Const(sub_left)) {
-                       tarval   *tv     = get_Const_tarval(sub_left);
-                       tarval   *tv_mod = get_modulo_tv_value(tv, modulo);
+                       ir_tarval *tv     = get_Const_tarval(sub_left);
+                       ir_tarval *tv_mod = get_modulo_tv_value(tv, modulo);
                        ir_node  *newconst;
                        if (tv_mod == tv)
                                return n;
@@ -5768,7 +5766,7 @@ static ir_node *transform_node_Mux(ir_node *n)
 
                if (is_Cmp(cmp) && is_Const(t) &&
                    (!is_Const(f) || (is_Const_null(t) && !is_Const_null(f)))) {
-                       pn_Cmp pnc = get_Proj_proj(sel);
+                       pn_Cmp pnc = get_Proj_pn_cmp(sel);
                        ir_node *tmp = t;
                        t = f;
                        f = tmp;
@@ -5786,7 +5784,7 @@ static ir_node *transform_node_Mux(ir_node *n)
                ir_node  *block = get_nodes_block(n);
 
                if (is_Const(t)) {
-                       tarval *tv_t = get_Const_tarval(t);
+                       ir_tarval *tv_t = get_Const_tarval(t);
                        if (tv_t == tarval_b_true) {
                                if (is_Const(f)) {
                                        /* Muxb(sel, true, false) = sel */
@@ -5801,7 +5799,7 @@ static ir_node *transform_node_Mux(ir_node *n)
                                }
                        }
                } else if (is_Const(f)) {
-                       tarval *tv_f = get_Const_tarval(f);
+                       ir_tarval *tv_f = get_Const_tarval(f);
                        if (tv_f == tarval_b_true) {
                                /* Muxb(sel, x, true) = Or(Not(sel), x) */
                                ir_node* not_sel = new_rd_Not(dbg, block, sel, mode_b);
@@ -5821,8 +5819,8 @@ static ir_node *transform_node_Mux(ir_node *n)
        /* more normalization: Mux(sel, 0, 1) is simply a conv from the mode_b
         * value to integer. */
        if (is_Const(t) && is_Const(f) && mode_is_int(mode)) {
-               tarval *a = get_Const_tarval(t);
-               tarval *b = get_Const_tarval(f);
+               ir_tarval *a = get_Const_tarval(t);
+               ir_tarval *b = get_Const_tarval(f);
 
                if (tarval_is_one(a) && tarval_is_null(b)) {
                        ir_node *block = get_nodes_block(n);
@@ -6102,7 +6100,6 @@ static ir_op_ops *firm_set_default_transform_node(ir_opcode code, ir_op_ops *ops
        CASE(Eor);
        CASE(Not);
        CASE(Minus);
-       CASE(Cast);
        CASE_PROJ(Load);
        CASE_PROJ(Store);
        CASE_PROJ(Bound);
@@ -6140,14 +6137,13 @@ static ir_op_ops *firm_set_default_transform_node(ir_opcode code, ir_op_ops *ops
 /** Compares the attributes of two Const nodes. */
 static int node_cmp_attr_Const(ir_node *a, ir_node *b)
 {
-       return (get_Const_tarval(a) != get_Const_tarval(b))
-           || (get_Const_type(a) != get_Const_type(b));
-}  /* node_cmp_attr_Const */
+       return get_Const_tarval(a) != get_Const_tarval(b);
+}
 
 /** Compares the attributes of two Proj nodes. */
 static int node_cmp_attr_Proj(ir_node *a, ir_node *b)
 {
-       return a->attr.proj != b->attr.proj;
+       return a->attr.proj.proj != b->attr.proj.proj;
 }  /* node_cmp_attr_Proj */
 
 /** Compares the attributes of two Alloc nodes. */
@@ -6172,9 +6168,8 @@ static int node_cmp_attr_SymConst(ir_node *a, ir_node *b)
        const symconst_attr *pa = &a->attr.symc;
        const symconst_attr *pb = &b->attr.symc;
        return (pa->kind       != pb->kind)
-           || (pa->sym.type_p != pb->sym.type_p)
-           || (pa->tp         != pb->tp);
-}  /* node_cmp_attr_SymConst */
+           || (pa->sym.type_p != pb->sym.type_p);
+}
 
 /** Compares the attributes of two Call nodes. */
 static int node_cmp_attr_Call(ir_node *a, ir_node *b)
@@ -6522,7 +6517,7 @@ ir_node *identify_remember(ir_node *n)
 
        ir_normalize_node(n);
        /* lookup or insert in hash table with given hash key. */
-       nn = pset_insert(value_table, n, ir_node_hash(n));
+       nn = (ir_node*)pset_insert(value_table, n, ir_node_hash(n));
 
        if (nn != n) {
                /* n is reachable again */
@@ -6569,7 +6564,7 @@ void visit_all_identities(ir_graph *irg, irg_walk_func visit, void *env)
        ir_graph *rem = current_ir_graph;
 
        current_ir_graph = irg;
-       foreach_pset(irg->value_table, node) {
+       foreach_pset(irg->value_table, ir_node*, node) {
                visit(node, env);
        }
        current_ir_graph = rem;
@@ -6587,7 +6582,8 @@ static ir_node *gigo(ir_node *node)
        /* remove garbage blocks by looking at control flow that leaves the block
           and replacing the control flow by Bad. */
        if (get_irn_mode(node) == mode_X) {
-               ir_node *block = get_nodes_block(skip_Proj(node));
+               ir_node  *block = get_nodes_block(skip_Proj(node));
+               ir_graph *irg   = get_irn_irg(block);
 
                /* Don't optimize nodes in immature blocks. */
                if (!get_Block_matured(block))
@@ -6598,7 +6594,7 @@ static ir_node *gigo(ir_node *node)
                if (is_Block(block)) {
                        if (is_Block_dead(block)) {
                                /* control flow from dead block is dead */
-                               return new_Bad();
+                               return get_irg_bad(irg);
                        }
 
                        for (i = get_irn_arity(block) - 1; i >= 0; --i) {
@@ -6617,7 +6613,7 @@ static ir_node *gigo(ir_node *node)
                                         * but can be found by irg_walk()!
                                         */
                                        set_Block_dead(block);
-                                       return new_Bad();
+                                       return get_irg_bad(irg);
                                }
                        }
                }
@@ -6625,7 +6621,8 @@ static ir_node *gigo(ir_node *node)
 
        /* Blocks, Phis and Tuples may have dead inputs, e.g., if one of the
           blocks predecessors is dead. */
-       if (op != op_Block && op != op_Phi && op != op_Tuple) {
+       if (op != op_Block && op != op_Phi && op != op_Tuple && op != op_Anchor) {
+               ir_graph *irg = get_irn_irg(node);
                irn_arity = get_irn_arity(node);
 
                /*
@@ -6633,13 +6630,13 @@ static ir_node *gigo(ir_node *node)
                 */
                if (is_irn_pinned_in_irg(node) &&
                        is_Block_dead(get_nodes_block(skip_Proj(node))))
-                       return new_Bad();
+                       return get_irg_bad(irg);
 
                for (i = 0; i < irn_arity; i++) {
                        ir_node *pred = get_irn_n(node, i);
 
                        if (is_Bad(pred))
-                               return new_Bad();
+                               return get_irg_bad(irg);
 #if 0
                        /* Propagating Unknowns here seems to be a bad idea, because
                           sometimes we need a node as a input and did not want that
@@ -6647,7 +6644,7 @@ static ir_node *gigo(ir_node *node)
                           However, it might be useful to move this into a later phase
                           (if you think that optimizing such code is useful). */
                        if (is_Unknown(pred) && mode_is_data(get_irn_mode(node)))
-                               return new_Unknown(get_irn_mode(node));
+                               return new_r_Unknown(irg, get_irn_mode(node));
 #endif
                }
        }
@@ -6661,7 +6658,7 @@ static ir_node *gigo(ir_node *node)
                for (i = 0; i < irn_arity; i++) {
                        if (!is_Bad(get_irn_n(node, i))) break;
                }
-               if (i == irn_arity) node = new_Bad();
+               if (i == irn_arity) node = get_irg_bad(irg);
        }
 #endif
        return node;
@@ -6676,10 +6673,10 @@ static ir_node *gigo(ir_node *node)
  */
 ir_node *optimize_node(ir_node *n)
 {
-       tarval   *tv;
-       ir_node  *oldn = n;
-       ir_graph *irg = get_irn_irg(n);
-       ir_opcode iro = get_irn_opcode(n);
+       ir_node   *oldn = n;
+       ir_graph  *irg  = get_irn_irg(n);
+       unsigned   iro  = get_irn_opcode(n);
+       ir_tarval *tv;
 
        /* Always optimize Phi nodes: part of the construction. */
        if ((!get_opt_optimize()) && (iro != iro_Phi)) return n;
@@ -6692,22 +6689,14 @@ ir_node *optimize_node(ir_node *n)
                        tv = computed_value(n);
                        if (tv != tarval_bad) {
                                ir_node *nw;
-                               ir_type *old_tp = get_irn_type(n);
-                               int i, arity = get_irn_arity(n);
-                               int node_size;
-
-                               /*
-                                * Try to recover the type of the new expression.
-                                */
-                               for (i = 0; i < arity && !old_tp; ++i)
-                                       old_tp = get_irn_type(get_irn_n(n, i));
+                               size_t node_size;
 
                                /*
-                                * we MUST copy the node here temporary, because it's still needed
-                                * for DBG_OPT_CSTEVAL
+                                * we MUST copy the node here temporary, because it's still
+                                * needed for DBG_OPT_CSTEVAL
                                 */
                                node_size = offsetof(ir_node, attr) +  n->op->attr_size;
-                               oldn = alloca(node_size);
+                               oldn = (ir_node*)alloca(node_size);
 
                                memcpy(oldn, n, node_size);
                                CLONE_ARR_A(ir_node *, oldn->in, n->in);
@@ -6720,10 +6709,8 @@ ir_node *optimize_node(ir_node *n)
 
                                /* evaluation was successful -- replace the node. */
                                irg_kill_node(irg, n);
-                               nw = new_Const(tv);
+                               nw = new_r_Const(irg, tv);
 
-                               if (old_tp && get_type_mode(old_tp) == get_tarval_mode(tv))
-                                       set_Const_type(nw, old_tp);
                                DBG_OPT_CSTEVAL(oldn, nw);
                                return nw;
                        }
@@ -6787,9 +6774,9 @@ ir_node *optimize_node(ir_node *n)
  */
 ir_node *optimize_in_place_2(ir_node *n)
 {
-       tarval *tv;
-       ir_node *oldn = n;
-       ir_opcode iro = get_irn_opcode(n);
+       ir_tarval *tv;
+       ir_node   *oldn = n;
+       unsigned   iro  = get_irn_opcode(n);
 
        if (!get_opt_optimize() && !is_Phi(n)) return n;
 
@@ -6804,19 +6791,9 @@ ir_node *optimize_in_place_2(ir_node *n)
                        tv = computed_value(n);
                        if (tv != tarval_bad) {
                                /* evaluation was successful -- replace the node. */
-                               ir_type *old_tp = get_irn_type(n);
-                               int i, arity = get_irn_arity(n);
-
-                               /*
-                                * Try to recover the type of the new expression.
-                                */
-                               for (i = 0; i < arity && !old_tp; ++i)
-                                       old_tp = get_irn_type(get_irn_n(n, i));
-
-                               n = new_Const(tv);
+                               ir_graph *irg = get_irn_irg(n);
 
-                               if (old_tp && get_type_mode(old_tp) == get_tarval_mode(tv))
-                                       set_Const_type(n, old_tp);
+                               n = new_r_Const(irg, tv);
 
                                DBG_OPT_CSTEVAL(oldn, n);
                                return n;
@@ -6959,7 +6936,6 @@ ir_op_ops *firm_set_default_operations(ir_opcode code, ir_op_ops *ops)
        ops = firm_set_default_equivalent_node(code, ops);
        ops = firm_set_default_transform_node(code, ops);
        ops = firm_set_default_node_cmp_attr(code, ops);
-       ops = firm_set_default_get_type(code, ops);
        ops = firm_set_default_get_type_attr(code, ops);
        ops = firm_set_default_get_entity_attr(code, ops);