X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firmode.c;h=7d5a78f7a8e045146ac01991098ee7c598224c78;hb=a999e1baedb84dc9b83059708699dac1c7fdb9a2;hp=fe8e54c68a468c72645a57cd5219a7d3c74c44d9;hpb=e7c5619996763956ce1185368df7b90f6f36274b;p=libfirm

diff --git a/ir/ir/irmode.c b/ir/ir/irmode.c
index fe8e54c68..7d5a78f7a 100644
--- a/ir/ir/irmode.c
+++ b/ir/ir/irmode.c
@@ -1,32 +1,49 @@
-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-** All rights reserved.
-**
-** Authors: Martin Trapp, Christian Schaefer
-**
-*/
-
-/* $Id$ */
+/*
+ * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
+ *
+ * This file is part of libFirm.
+ *
+ * This file may be distributed and/or modified under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation and appearing in the file LICENSE.GPL included in the
+ * packaging of this file.
+ *
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
 
+/**
+ * @file
+ * @brief    Data modes of operations.
+ * @author   Martin Trapp, Christian Schaefer, Goetz Lindenmaier, Mathias Heil
+ * @version  $Id$
+ */
 #ifdef HAVE_CONFIG_H
-# include <config.h>
+# include "config.h"
 #endif
 
-# include "irmode_t.h"
-# include "ident.h"
+#ifdef HAVE_STDLIB_H
 # include <stdlib.h>
-# include <stddef.h>
+#endif
+#ifdef HAVE_STRING_H
 # include <string.h>
-# include "tv.h"
-# include "obst.h"
-# include "misc.h"
-
-#if 0
-static long long count = 0;
-#  define ANNOUNCE() printf(__FILE__": call no. %lld (%s)\n", count++, __FUNCTION__)
-#else
-#  define ANNOUNCE() ((void)0)
 #endif
 
+# include <stddef.h>
+
+# include "irprog_t.h"
+# include "irmode_t.h"
+# include "ident.h"
+# include "tv_t.h"
+# include "obst.h"
+# include "irhooks.h"
+# include "irtools.h"
+
 /* * *
  * local values
  * * */
@@ -36,7 +53,7 @@ static long long count = 0;
 static struct obstack modes;
 
 /** number of defined modes */
-static int num_modes;
+static int num_modes = 0;
 
 /* * *
  * local functions
@@ -48,12 +65,29 @@ static int num_modes;
  *
  * TODO: Add other fields
  **/
-INLINE static int modes_are_equal(const ir_mode *m, const ir_mode *n)
-{
-  if (m == n) return 1;
-  if (0 == memcmp(&m->sort, &n->sort, offsetof(ir_mode,min) - offsetof(ir_mode,sort))) return 1;
+INLINE static int modes_are_equal(const ir_mode *m, const ir_mode *n) {
+	if (m == n) return 1;
+	if (m->sort         == n->sort &&
+		m->arithmetic   == n->arithmetic &&
+		m->size         == n->size &&
+		m->sign         == n->sign  &&
+		m->modulo_shift == n->modulo_shift &&
+		m->vector_elem  == n->vector_elem)
+		return 1;
 
-  return 0;
+	return 0;
+}
+
+/*
+ * calculates the next obstack address
+ */
+static void *next_obstack_adr(struct obstack *o, void *p, size_t s) {
+	PTR_INT_TYPE adr = PTR_TO_INT((char *)p);
+	int mask = obstack_alignment_mask(o);
+
+	adr += s + mask;
+
+	return INT_TO_PTR(adr & ~mask);
 }
 
 /**
@@ -61,67 +95,77 @@ INLINE static int modes_are_equal(const ir_mode *m, const ir_mode *n)
  * a pointer on an equal mode already in the array, NULL if
  * none found
  */
-static ir_mode *find_mode(const ir_mode *m)
-{
-  ir_mode *n;
-  struct _obstack_chunk	*p;
-
-  p=modes.chunk;
-  for( n=(ir_mode*) p->contents; (char *)n < modes.next_free; n+=sizeof(ir_mode) )
-  {
-    if(modes_are_equal(n,m)) return n;
-  }
+static ir_mode *find_mode(const ir_mode *m) {
+	ir_mode *n, *nn;
+	struct _obstack_chunk	*p;
+
+	p  = modes.chunk;
+	n  = (ir_mode *)p->contents;
+	nn = next_obstack_adr(&modes, n, sizeof(*n));
+	for (; (char *)nn <= modes.next_free;) {
+		assert(is_mode(n));
+		if (modes_are_equal(n, m))
+			return n;
+
+		n  = nn;
+		nn = next_obstack_adr(&modes, n, sizeof(*n));
+	}
+
+	for (p = p->prev; p; p = p->prev) {
+		n  = (ir_mode *)p->contents;
+		nn = next_obstack_adr(&modes, n, sizeof(*n));
+		for (; (char *)nn < p->limit;) {
+			assert(is_mode(n));
+			if (modes_are_equal(n, m))
+				return n;
+
+			n  = nn;
+			nn = next_obstack_adr(&modes, n, sizeof(*n));
+		}
+	}
 
-  for (p = p->prev; p; p = p->prev)
-  {
-    for( n=(ir_mode*) p->contents; (char *)n < p->limit; n+=sizeof(ir_mode) )
-    {
-      if(modes_are_equal(n,m)) return n;
-    }
-  }
-
-  return NULL;
+	return NULL;
 }
 
 /**
  * sets special values of modes
  */
-static void set_mode_values(ir_mode* mode)
-{
-  switch (get_mode_sort(mode))
-  {
-    case irms_int_number:
-    case irms_float_number:
-      mode->min = get_tarval_min(mode);
-      mode->max = get_tarval_max(mode);
-      mode->null = get_tarval_null(mode);
-      mode->one = get_tarval_one(mode);
-      break;
-
-    case irms_internal_boolean:
-      mode->min = tarval_b_false;
-      mode->max = tarval_b_true;
-      mode->null = tarval_b_false;
-      mode->one = tarval_b_true;
-      break;
-
-    case irms_reference:
-      mode->min = tarval_bad;
-      mode->max = tarval_bad;
-      mode->null = (get_mode_modecode(mode)==irm_P)?tarval_P_void:tarval_bad;
-      mode->one = tarval_bad;
-      break;
-
-    case irms_character:
-    case irms_auxiliary:
-    case irms_memory:
-    case irms_control_flow:
-      mode->min = tarval_bad;
-      mode->max = tarval_bad;
-      mode->null = tarval_bad;
-      mode->one = tarval_bad;
-      break;
-  }
+static void set_mode_values(ir_mode* mode) {
+	switch (get_mode_sort(mode))    {
+	case irms_reference:
+	case irms_int_number:
+	case irms_float_number:
+		mode->min  = get_tarval_min(mode);
+		mode->max  = get_tarval_max(mode);
+		mode->null = get_tarval_null(mode);
+		mode->one  = get_tarval_one(mode);
+		mode->minus_one = get_tarval_minus_one(mode);
+		if(get_mode_sort(mode) != irms_float_number) {
+			mode->all_one = get_tarval_all_one(mode);
+		} else {
+			mode->all_one = tarval_bad;
+		}
+		break;
+
+	case irms_internal_boolean:
+		mode->min  = tarval_b_false;
+		mode->max  = tarval_b_true;
+		mode->null = tarval_b_false;
+		mode->one  = tarval_b_true;
+		mode->minus_one = tarval_bad;
+		mode->all_one = tarval_b_true;
+		break;
+
+	case irms_auxiliary:
+	case irms_memory:
+	case irms_control_flow:
+		mode->min  = tarval_bad;
+		mode->max  = tarval_bad;
+		mode->null = tarval_bad;
+		mode->one  = tarval_bad;
+		mode->minus_one = tarval_bad;
+		break;
+	}
 }
 
 /* * *
@@ -151,694 +195,757 @@ ir_mode *mode_Is;   /* 32 bit */
 ir_mode *mode_Iu;
 ir_mode *mode_Ls;   /* 64 bit */
 ir_mode *mode_Lu;
+ir_mode *mode_LLs;  /* 128 bit */
+ir_mode *mode_LLu;
 
-ir_mode *mode_C;
-ir_mode *mode_U;
 ir_mode *mode_b;
 ir_mode *mode_P;
 
 /* machine specific modes */
-ir_mode *mode_P_mach;	/* machine specific pointer mode */
+ir_mode *mode_P_code;   /**< machine specific pointer mode for code addresses */
+ir_mode *mode_P_data;   /**< machine specific pointer mode for data addresses */
 
 /* * *
  * functions defined in irmode.h
  * * */
 
 /* JNI access functions */
-INLINE ir_mode *get_modeT(void) { ANNOUNCE(); return mode_T; }
-INLINE ir_mode *get_modeF(void) { ANNOUNCE(); return mode_F; }
-INLINE ir_mode *get_modeD(void) { ANNOUNCE(); return mode_D; }
-INLINE ir_mode *get_modeE(void) { ANNOUNCE(); return mode_E; }
-INLINE ir_mode *get_modeBs(void) { ANNOUNCE(); return mode_Bs; }
-INLINE ir_mode *get_modeBu(void) { ANNOUNCE(); return mode_Bu; }
-INLINE ir_mode *get_modeHs(void) { ANNOUNCE(); return mode_Hs; }
-INLINE ir_mode *get_modeHu(void) { ANNOUNCE(); return mode_Hu; }
-INLINE ir_mode *get_modeIs(void) { ANNOUNCE(); return mode_Is; }
-INLINE ir_mode *get_modeIu(void) { ANNOUNCE(); return mode_Iu; }
-INLINE ir_mode *get_modeLs(void) { ANNOUNCE(); return mode_Ls; }
-INLINE ir_mode *get_modeLu(void) { ANNOUNCE(); return mode_Lu; }
-INLINE ir_mode *get_modeC(void) { ANNOUNCE(); return mode_C; }
-INLINE ir_mode *get_modeU(void) { ANNOUNCE(); return mode_U; }
-INLINE ir_mode *get_modeb(void) { ANNOUNCE(); return mode_b; }
-INLINE ir_mode *get_modeP(void) { ANNOUNCE(); return mode_P; }
-INLINE ir_mode *get_modeX(void) { ANNOUNCE(); return mode_X; }
-INLINE ir_mode *get_modeM(void) { ANNOUNCE(); return mode_M; }
-INLINE ir_mode *get_modeBB(void) { ANNOUNCE(); return mode_BB; }
-INLINE ir_mode *get_modeANY(void) { ANNOUNCE(); return mode_ANY; }
-INLINE ir_mode *get_modeBAD(void) { ANNOUNCE(); return mode_BAD; }
-
-
-ir_mode *get_modeP_mach(void)  { ANNOUNCE(); return mode_P_mach; }
-void     set_modeP_mach(ir_mode *p) {
-  ANNOUNCE();
-  assert(mode_is_reference(p));
-  mode_P_mach = p;
- }
+ir_mode *get_modeT(void) { return mode_T; }
+ir_mode *get_modeF(void) { return mode_F; }
+ir_mode *get_modeD(void) { return mode_D; }
+ir_mode *get_modeE(void) { return mode_E; }
+ir_mode *get_modeBs(void) { return mode_Bs; }
+ir_mode *get_modeBu(void) { return mode_Bu; }
+ir_mode *get_modeHs(void) { return mode_Hs; }
+ir_mode *get_modeHu(void) { return mode_Hu; }
+ir_mode *get_modeIs(void) { return mode_Is; }
+ir_mode *get_modeIu(void) { return mode_Iu; }
+ir_mode *get_modeLs(void) { return mode_Ls; }
+ir_mode *get_modeLu(void) { return mode_Lu; }
+ir_mode *get_modeLLs(void){ return mode_LLs; }
+ir_mode *get_modeLLu(void){ return mode_LLu; }
+ir_mode *get_modeb(void) { return mode_b; }
+ir_mode *get_modeP(void) { return mode_P; }
+ir_mode *get_modeX(void) { return mode_X; }
+ir_mode *get_modeM(void) { return mode_M; }
+ir_mode *get_modeBB(void) { return mode_BB; }
+ir_mode *get_modeANY(void) { return mode_ANY; }
+ir_mode *get_modeBAD(void) { return mode_BAD; }
+
+
+ir_mode *(get_modeP_code)(void) {
+	return _get_modeP_code();
+}
+
+ir_mode *(get_modeP_data)(void) {
+	return _get_modeP_data();
+}
+
+void set_modeP_code(ir_mode *p) {
+	assert(mode_is_reference(p));
+	mode_P_code = p;
+}
+
+void set_modeP_data(ir_mode *p) {
+	assert(mode_is_reference(p));
+	mode_P_data = p;
+}
 
 /**
- * Registers a new mode if not defined yet, else returns
- * the "equivalent" one.
+ * Registers a new mode.
+ *
+ * @param new_mode  The new mode template.
  */
-static ir_mode *register_mode(const ir_mode* new_mode)
-{
-  ir_mode *mode = NULL;
+static ir_mode *register_mode(const ir_mode *new_mode) {
+	ir_mode *mode = NULL;
+
+	assert(new_mode);
 
-  ANNOUNCE();
-  assert(new_mode);
+	/* copy mode struct to modes array */
+	mode = (ir_mode *)obstack_copy(&modes, new_mode, sizeof(*mode));
 
-  /* copy mode struct to modes array */
-  mode=(ir_mode*) obstack_copy(&modes, new_mode, sizeof(ir_mode));
+	mode->kind = k_ir_mode;
+	if (num_modes >= irm_max)  {
+		mode->code = num_modes;
+	}
+	num_modes++;
 
-  mode->kind = k_ir_mode;
-  if(num_modes>=irm_max) mode->code = num_modes;
-  num_modes++;
+	/* add the new mode to the irp list of modes */
+	add_irp_mode(mode);
 
-  set_mode_values(mode);
+	set_mode_values(mode);
 
-  return mode;
+	hook_new_mode(new_mode, mode);
+	return mode;
 }
 
 /*
  * Creates a new mode.
  */
-ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int align, int sign, mode_arithmetic arithmetic )
-{
-  ir_mode mode_tmpl;
-  ir_mode *mode;
-
-  /* sanity checks */
-  switch (sort)
-  {
-    case irms_auxiliary:
-    case irms_control_flow:
-    case irms_memory:
-    case irms_internal_boolean:
-      assert(0 && "internal modes cannot be user defined");
-      return NULL;
-      break;
-
-    case irms_float_number:
-      if(arithmetic != irma_ieee754) {
-	assert(0 && "not yet implemented");
-	return NULL;
-      }
-      break;
-
-    case irms_int_number:
-    case irms_reference:
-    case irms_character:
-      break;
-  }
-  mode_tmpl.name        = new_id_from_str(name);
-  mode_tmpl.sort        = sort;
-  mode_tmpl.size        = bit_size;
-  mode_tmpl.align       = align;
-  mode_tmpl.sign        = sign ? 1 : 0;
-  mode_tmpl.arithmetic  = arithmetic;
-  mode_tmpl.link        = NULL;
-  mode_tmpl.tv_priv     = NULL;
-
-  /* first check if there already is a matching mode */
-  mode = find_mode(&mode_tmpl);
-  if (mode)
-  {
-    return mode;
-  }
-  else
-  {
-    return register_mode(&mode_tmpl);
-  }
-}
-
-/* Functions for the direct access to all attributes od a ir_mode */
-modecode
-get_mode_modecode(const ir_mode *mode)
-{
-  ANNOUNCE();
-  return mode->code;
+ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int sign,
+                     mode_arithmetic arithmetic, unsigned int modulo_shift)
+{
+	ir_mode mode_tmpl;
+	ir_mode *mode = NULL;
+
+	mode_tmpl.name         = new_id_from_str(name);
+	mode_tmpl.sort         = sort;
+	mode_tmpl.size         = bit_size;
+	mode_tmpl.sign         = sign ? 1 : 0;
+	mode_tmpl.modulo_shift = (mode_tmpl.sort == irms_int_number) ? modulo_shift : 0;
+	mode_tmpl.vector_elem  = 1;
+	mode_tmpl.arithmetic   = arithmetic;
+	mode_tmpl.link         = NULL;
+	mode_tmpl.tv_priv      = NULL;
+
+	mode = find_mode(&mode_tmpl);
+	if (mode) {
+		hook_new_mode(&mode_tmpl, mode);
+		return mode;
+	}
+
+	/* sanity checks */
+	switch (sort) {
+	case irms_auxiliary:
+	case irms_control_flow:
+	case irms_memory:
+	case irms_internal_boolean:
+		assert(0 && "internal modes cannot be user defined");
+		break;
+
+	case irms_float_number:
+	case irms_int_number:
+	case irms_reference:
+		mode = register_mode(&mode_tmpl);
+	}
+	return mode;
 }
 
-ident *
-get_mode_ident(const ir_mode *mode)
+/*
+ * Creates a new vector mode.
+ */
+ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int sign,
+                            mode_arithmetic arithmetic, unsigned int modulo_shift)
 {
-  ANNOUNCE();
-  return mode->name;
+	ir_mode mode_tmpl;
+	ir_mode *mode = NULL;
+
+	mode_tmpl.name         = new_id_from_str(name);
+	mode_tmpl.sort         = sort;
+	mode_tmpl.size         = bit_size * num_of_elem;
+	mode_tmpl.sign         = sign ? 1 : 0;
+	mode_tmpl.modulo_shift = (mode_tmpl.sort == irms_int_number) ? modulo_shift : 0;
+	mode_tmpl.vector_elem  = num_of_elem;
+	mode_tmpl.arithmetic   = arithmetic;
+	mode_tmpl.link         = NULL;
+	mode_tmpl.tv_priv      = NULL;
+
+	mode = find_mode(&mode_tmpl);
+	if (mode) {
+		hook_new_mode(&mode_tmpl, mode);
+		return mode;
+	}
+
+	if (num_of_elem <= 1) {
+		assert(0 && "vector modes should have at least 2 elements");
+		return NULL;
+	}
+
+	/* sanity checks */
+	switch (sort) {
+	case irms_auxiliary:
+	case irms_control_flow:
+	case irms_memory:
+	case irms_internal_boolean:
+		assert(0 && "internal modes cannot be user defined");
+		break;
+
+	case irms_reference:
+		assert(0 && "only integer and floating point modes can be vectorized");
+		break;
+
+	case irms_float_number:
+		assert(0 && "not yet implemented");
+		break;
+
+	case irms_int_number:
+		mode = register_mode(&mode_tmpl);
+	}
+	return mode;
 }
 
-const char *
-get_mode_name(const ir_mode *mode)
-{
-  ANNOUNCE();
-  return id_to_str(mode->name);
+/* Functions for the direct access to all attributes of an ir_mode */
+modecode (get_mode_modecode)(const ir_mode *mode) {
+	return _get_mode_modecode(mode);
 }
 
-mode_sort
-get_mode_sort(const ir_mode* mode)
-{
-  ANNOUNCE();
-  return mode->sort;
+ident *(get_mode_ident)(const ir_mode *mode) {
+	return _get_mode_ident(mode);
 }
 
-INLINE int
-get_mode_size_bits(const ir_mode *mode)
-{
-  ANNOUNCE();
-  return mode->size;
+const char *get_mode_name(const ir_mode *mode) {
+	return get_id_str(mode->name);
 }
 
-int get_mode_size_bytes(const ir_mode *mode) {
-  int size = get_mode_size_bits(mode);
-  ANNOUNCE();
-  if ((size & 7) != 0) return -1;
-  return size >> 3;
+mode_sort (get_mode_sort)(const ir_mode* mode) {
+	return _get_mode_sort(mode);
 }
 
-int
-get_mode_align (const ir_mode *mode)
-{
-  ANNOUNCE();
-  return mode->align;
+unsigned (get_mode_size_bits)(const ir_mode *mode) {
+	return _get_mode_size_bits(mode);
 }
 
-int
-get_mode_sign (const ir_mode *mode)
-{
-  ANNOUNCE();
-  return mode->sign;
+unsigned (get_mode_size_bytes)(const ir_mode *mode) {
+	return _get_mode_size_bytes(mode);
 }
 
-int get_mode_arithmetic (const ir_mode *mode)
-{
-  ANNOUNCE();
-  return mode->arithmetic;
+int (get_mode_sign)(const ir_mode *mode) {
+	return _get_mode_sign(mode);
 }
 
-void* get_mode_link(const ir_mode *mode)
-{
-  ANNOUNCE();
-  return mode->link;
+mode_arithmetic (get_mode_arithmetic)(const ir_mode *mode) {
+	return get_mode_arithmetic(mode);
 }
 
-void set_mode_link(ir_mode *mode, void *l)
-{
-  mode->link=l;
-  return;
+
+/* Attribute modulo shift specifies for modes of kind irms_int_number
+ *  whether shift applies modulo to value of bits to shift.  Asserts
+ *  if mode is not irms_int_number.
+ */
+unsigned int (get_mode_modulo_shift)(const ir_mode *mode) {
+	return _get_mode_modulo_shift(mode);
 }
 
-tarval *
-get_mode_min (ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  assert(get_mode_modecode(mode) < num_modes);
-  assert(mode_is_data(mode));
+unsigned int (get_mode_n_vector_elems)(const ir_mode *mode) {
+	return _get_mode_vector_elems(mode);
+}
 
-  return mode->min;
+void *(get_mode_link)(const ir_mode *mode) {
+	return _get_mode_link(mode);
 }
 
-tarval *
-get_mode_max (ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  assert(get_mode_modecode(mode) < num_modes);
-  assert(mode_is_data(mode));
+void (set_mode_link)(ir_mode *mode, void *l) {
+	_set_mode_link(mode, l);
+}
 
-  return mode->max;
+tarval *get_mode_min(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_data(mode));
+
+	return mode->min;
 }
 
-tarval *
-get_mode_null (ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  assert(get_mode_modecode(mode) < num_modes);
-  assert(mode_is_data(mode));
+tarval *get_mode_max(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_data(mode));
 
-  return mode->null;
+	return mode->max;
 }
 
-tarval *
-get_mode_one (ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  assert(get_mode_modecode(mode) < num_modes);
-  assert(mode_is_data(mode));
+tarval *get_mode_null(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_datab(mode));
 
-  return mode->one;
+	return mode->null;
 }
 
-tarval *
-get_mode_infinite(ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  assert(get_mode_modecode(mode) < num_modes);
-  assert(mode_is_float(mode));
+tarval *get_mode_one(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_data(mode));
 
-  return get_tarval_inf(mode);
+	return mode->one;
 }
 
-tarval *
-get_mode_NAN(ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  assert(get_mode_modecode(mode) < num_modes);
-  assert(mode_is_float(mode));
-
-  return get_tarval_nan(mode);
-}
-
-int
-is_mode (void *thing) {
-  assert(thing);
-  if (get_kind(thing) == k_ir_mode)
-    return 1;
-  else
-    return 0;
-}
-
-/* Functions to check, whether a modecode is signed, float, int, num, data,
-   datab or dataM. For more exact definitions read the corresponding pages
-   in the firm documentation or the followingenumeration
-
-   The set of "float" is defined as:
-   ---------------------------------
-   float = {irm_F, irm_D, irm_E}
-
-   The set of "int" is defined as:
-   -------------------------------
-   int   = {irm_Bs, irm_Bu, irm_Hs, irm_Hu, irm_Is, irm_Iu, irm_Ls, irm_Lu}
-
-   The set of "num" is defined as:
-   -------------------------------
-   num   = {irm_F, irm_D, irm_E, irm_Bs, irm_Bu, irm_Hs, irm_Hu,
-            irm_Is, irm_Iu, irm_Ls, irm_Lu}
-            = {float || int}
-
-   The set of "data" is defined as:
-   -------------------------------
-   data  = {irm_F, irm_D, irm_E irm_Bs, irm_Bu, irm_Hs, irm_Hu,
-            irm_Is, irm_Iu, irm_Ls, irm_Lu, irm_C, irm_U, irm_P}
-            = {num || irm_C || irm_U || irm_P}
-
-   The set of "datab" is defined as:
-   ---------------------------------
-   datab = {irm_F, irm_D, irm_E, irm_Bs, irm_Bu, irm_Hs, irm_Hu,
-            irm_Is, irm_Iu, irm_Ls, irm_Lu, irm_C, irm_U, irm_P, irm_b}
-            = {data || irm_b }
-
-   The set of "dataM" is defined as:
-   ---------------------------------
-   dataM = {irm_F, irm_D, irm_E, irm_Bs, irm_Bu, irm_Hs, irm_Hu,
-            irm_Is, irm_Iu, irm_Ls, irm_Lu, irm_C, irm_U, irm_P, irm_M}
-            = {data || irm_M}
-*/
-
-#ifdef MODE_ACCESS_DEFINES
-#  undef mode_is_signed
-#  undef mode_is_float
-#  undef mode_is_int
-#  undef mode_is_num
-#  undef mode_is_numP
-#  undef mode_is_data
-#  undef mode_is_datab
-#  undef mode_is_dataM
-#endif
-int
-mode_is_signed (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return mode->sign;
+tarval *get_mode_minus_one(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_data(mode));
+
+	return mode->minus_one;
 }
 
-int
-mode_is_float (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (get_mode_sort(mode) == irms_float_number);
+tarval *get_mode_all_one(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_data(mode) || mode == mode_b);
+	return mode->all_one;
 }
 
-int
-mode_is_int (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (get_mode_sort(mode) == irms_int_number);
+tarval *get_mode_infinite(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_float(mode));
+
+	return get_tarval_plus_inf(mode);
 }
 
-int mode_is_character (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (get_mode_sort(mode) == irms_character);
+tarval *get_mode_NAN(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (modecode) num_modes);
+	assert(mode_is_float(mode));
+
+	return get_tarval_nan(mode);
 }
 
-int mode_is_reference (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (get_mode_sort(mode) == irms_reference);
+int is_mode(void *thing) {
+	if (get_kind(thing) == k_ir_mode)
+		return 1;
+	else
+		return 0;
 }
 
-int
-mode_is_num (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (mode_is_int(mode) || mode_is_float(mode));
+int (mode_is_signed)(const ir_mode *mode) {
+	return _mode_is_signed(mode);
 }
 
-int
-mode_is_numP (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (mode_is_int(mode) || mode_is_float(mode) || mode_is_reference(mode));
+int (mode_is_float)(const ir_mode *mode) {
+	return _mode_is_float(mode);
 }
 
-int
-mode_is_data (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (mode_is_num(mode) || get_mode_sort(mode) == irms_character || get_mode_sort(mode) == irms_reference);
+int (mode_is_int)(const ir_mode *mode) {
+	return _mode_is_int(mode);
 }
 
-int
-mode_is_datab (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (mode_is_data(mode) || get_mode_sort(mode) == irms_internal_boolean);
+int (mode_is_reference)(const ir_mode *mode) {
+	return _mode_is_reference(mode);
+}
+
+int (mode_is_num)(const ir_mode *mode) {
+	return _mode_is_num(mode);
+}
+
+int (mode_is_data)(const ir_mode *mode) {
+	return _mode_is_data(mode);
+}
+
+int (mode_is_datab)(const ir_mode *mode) {
+	return _mode_is_datab(mode);
+}
+
+int (mode_is_dataM)(const ir_mode *mode) {
+	return _mode_is_dataM(mode);
+}
+
+int (mode_is_float_vector)(const ir_mode *mode) {
+	return _mode_is_float_vector(mode);
+}
+
+int (mode_is_int_vector)(const ir_mode *mode) {
+	return _mode_is_int_vector(mode);
 }
 
-int
-mode_is_dataM (const ir_mode *mode)
-{
-  ANNOUNCE();
-  assert(mode);
-  return (mode_is_data(mode) || get_mode_modecode(mode) == irm_M);
-}
-#ifdef MODE_ACCESS_DEFINES
-#  define mode_is_signed(mode) (mode)->sign
-#  define mode_is_float(mode) ((mode)->sort == irms_float_number)
-#  define mode_is_int(mode) ((mode)->sort == irms_int_number)
-#  define mode_is_num(mode) (((mode)->sort == irms_float_number) || ((mode)->sort == irms_int_number))
-#  define mode_is_data(mode) (((mode)->sort == irms_float_number) || ((mode)->sort == irms_int_number) || ((mode)->sort == irms_character) || ((mode)->sort == irms_reference))
-#  define mode_is_datab(mode) (((mode)->sort == irms_float_number) || ((mode)->sort == irms_int_number) || ((mode)->sort == irms_character) || ((mode)->sort == irms_reference) || ((mode)->sort == irms_internal_boolean))
-#  define mode_is_dataM(mode) (((mode)->sort == irms_float_number) || ((mode)->sort == irms_int_number) || ((mode)->sort == irms_character) || ((mode)->sort == irms_reference) || ((mode)->code == irm_M))
-#endif
 /* Returns true if sm can be converted to lm without loss. */
-int
-smaller_mode(const ir_mode *sm, const ir_mode *lm)
-{
-  ANNOUNCE();
-  assert(sm);
-  assert(lm);
-
-  if (sm == lm) return 1;
-
-  switch(get_mode_sort(sm))
-  {
-    case irms_int_number:
-      switch(get_mode_sort(lm))
-      {
-        case irms_int_number:
-          /* integers are convertable if
-           *   - both have the same sign and lm is the larger one
-           *   - lm is the signed one and is at least two bits larger
-           *     (one for the sign, one for the highest bit of sm)
-           */
-          if (mode_is_signed(sm))
-          {
-            if ( mode_is_signed(lm) && (get_mode_size_bits(lm) > get_mode_size_bits(sm)) )
-              return 1;
-          }
-          else if (mode_is_signed(lm))
-          {
-            if (get_mode_size_bits(lm) > get_mode_size_bits(sm) + 1)
-              return 1;
-          }
-          else if (get_mode_size_bits(lm) > get_mode_size_bits(sm))
-          {
-            return 1;
-          }
-          break;
-
-        case irms_float_number:
-          /* int to float works if the float is large enough */
-          return 0;
-
-        default:
-          break;
-      }
-      break;
-
-    case irms_float_number:
-      /* XXX currently only the three standard 32,64,80 bit floats
-       * are supported which can safely be converted */
-      if ( (get_mode_sort(lm) == irms_float_number)
-           && (get_mode_size_bits(lm) > get_mode_size_bits(sm)) )
-         return 1;
-      break;
-
-    case irms_reference:
-       /* do exist machines out there with different pointer lenghts ?*/
-      return 0;
-
-    default:
-      break;
-  }
-
-  /* else */
-  return 0;
-}
-
-/* ** initialization ** */
-void
-init_mode (void)
-{
-  ir_mode newmode;
-  ANNOUNCE();
-  /* init flexible array */
+int smaller_mode(const ir_mode *sm, const ir_mode *lm) {
+	int sm_bits, lm_bits;
+
+	assert(sm);
+	assert(lm);
+
+	if (sm == lm) return 1;
+
+	sm_bits = get_mode_size_bits(sm);
+	lm_bits = get_mode_size_bits(lm);
+
+	switch (get_mode_sort(sm)) {
+	case irms_int_number:
+		switch (get_mode_sort(lm)) {
+		case irms_int_number:
+			if(get_mode_arithmetic(sm) != get_mode_arithmetic(lm))
+				return 0;
+
+			/* only two complement implemented */
+			assert(get_mode_arithmetic(sm)==irma_twos_complement);
+
+			/* integers are convertable if
+			 *   - both have the same sign and lm is the larger one
+			 *   - lm is the signed one and is at least two bits larger
+			 *     (one for the sign, one for the highest bit of sm)
+			 *   - sm & lm are two_complement and lm has greater or equal number of bits
+			 */
+			if(mode_is_signed(sm)) {
+				if(!mode_is_signed(lm))
+					return 0;
+				return sm_bits <= lm_bits;
+			} else {
+				if(mode_is_signed(lm)) {
+					return sm_bits < lm_bits;
+				}
+				return sm_bits <= lm_bits;
+			}
+			break;
+
+		case irms_float_number:
+			/* int to float works if the float is large enough */
+			return 0;
+
+		default:
+			break;
+		}
+		break;
+
+	case irms_float_number:
+		if (get_mode_arithmetic(sm) == get_mode_arithmetic(lm)) {
+			if ( (get_mode_sort(lm) == irms_float_number)
+				&& (get_mode_size_bits(lm) >= get_mode_size_bits(sm)) )
+				return 1;
+		}
+		break;
+
+	case irms_reference:
+		/* do exist machines out there with different pointer lenghts ?*/
+		return 0;
+
+	case irms_internal_boolean:
+		return mode_is_int(lm);
+
+	default:
+		break;
+	}
+
+	/* else */
+	return 0;
+}
+
+/* Return the signed integer equivalent mode for an reference mode. */
+ir_mode *get_reference_mode_signed_eq(ir_mode *mode) {
+	assert(mode_is_reference(mode));
+	return mode->eq_signed;
+}
+
+/* Sets the signed integer equivalent mode for an reference mode. */
+void set_reference_mode_signed_eq(ir_mode *ref_mode, ir_mode *int_mode) {
+	assert(mode_is_reference(ref_mode));
+	assert(mode_is_int(int_mode));
+	ref_mode->eq_signed = int_mode;
+}
+
+/* Return the unsigned integer equivalent mode for an reference mode. */
+ir_mode *get_reference_mode_unsigned_eq(ir_mode *mode) {
+	assert(mode_is_reference(mode));
+	return mode->eq_unsigned;
+}
+
+/* Sets the unsigned integer equivalent mode for an reference mode. */
+void set_reference_mode_unsigned_eq(ir_mode *ref_mode, ir_mode *int_mode) {
+	assert(mode_is_reference(ref_mode));
+	assert(mode_is_int(int_mode));
+	ref_mode->eq_unsigned = int_mode;
+}
+
+/* initialization, build the default modes */
+void init_mode(void) {
+	ir_mode newmode;
 
-  obstack_init(&modes);
+	obstack_init(&modes);
 
-  num_modes  =  0;
-  /* initialize predefined modes */
+	num_modes  =  0;
+	/* initialize predefined modes */
 
-  /* Internal Modes */
-  newmode.arithmetic = irma_none;
-  newmode.size    = 0;
-  newmode.align   = 0;
-  newmode.sign    = 0;
-  newmode.link    = NULL;
-  newmode.tv_priv = NULL;
+	/* Internal Modes */
+	newmode.arithmetic   = irma_none;
+	newmode.size         = 0;
+	newmode.sign         = 0;
+	newmode.modulo_shift = 0;
+	newmode.vector_elem  = 0;
+	newmode.eq_signed    = NULL;
+	newmode.eq_unsigned  = NULL;
+	newmode.link         = NULL;
+	newmode.tv_priv      = NULL;
 
-  /* Control Flow Modes*/
-  newmode.sort    = irms_control_flow;
+	/* Control Flow Modes*/
+	newmode.sort    = irms_control_flow;
 
-  /* Basic Block */
-  newmode.name    = id_from_str("BB", 2);
-  newmode.code    = irm_BB;
+	/* Basic Block */
+	newmode.name    = new_id_from_chars("BB", 2);
+	newmode.code    = irm_BB;
 
-  mode_BB = register_mode(&newmode);
+	mode_BB = register_mode(&newmode);
 
-/* eXecution */
-  newmode.name    = id_from_str("X", 1);
-  newmode.code    = irm_X;
+	/* eXecution */
+	newmode.name    = new_id_from_chars("X", 1);
+	newmode.code    = irm_X;
 
-  mode_X = register_mode(&newmode);
+	mode_X = register_mode(&newmode);
 
-  /* Memory Modes */
-  newmode.sort    = irms_memory;
+	/* Memory Modes */
+	newmode.sort    = irms_memory;
 
-  /* Memory */
-  newmode.name    = id_from_str("M", 1);
-  newmode.code    = irm_M;
+	/* Memory */
+	newmode.name    = new_id_from_chars("M", 1);
+	newmode.code    = irm_M;
 
-  mode_M = register_mode(&newmode);
+	mode_M = register_mode(&newmode);
 
-  /* Auxiliary Modes */
-  newmode.sort    = irms_auxiliary,
+	/* Auxiliary Modes */
+	newmode.sort    = irms_auxiliary,
 
-  /* Tuple */
-  newmode.name    = id_from_str("T", 1);
-  newmode.code    = irm_T;
+	/* Tuple */
+	newmode.name    = new_id_from_chars("T", 1);
+	newmode.code    = irm_T;
 
-  mode_T = register_mode(&newmode);
+	mode_T = register_mode(&newmode);
 
-  /* ANY */
-  newmode.name    = id_from_str("ANY", 3);
-  newmode.code    = irm_ANY;
+	/* ANY */
+	newmode.name    = new_id_from_chars("ANY", 3);
+	newmode.code    = irm_ANY;
 
-  mode_ANY = register_mode(&newmode);
+	mode_ANY = register_mode(&newmode);
 
-  /* BAD */
-  newmode.name    = id_from_str("BAD", 3);
-  newmode.code    = irm_BAD;
+	/* BAD */
+	newmode.name    = new_id_from_chars("BAD", 3);
+	newmode.code    = irm_BAD;
 
-  mode_BAD = register_mode(&newmode);
+	mode_BAD = register_mode(&newmode);
 
-  /* Internal Boolean Modes */
-  newmode.sort    = irms_internal_boolean;
+	/* Internal Boolean Modes */
+	newmode.sort    = irms_internal_boolean;
 
-  /* boolean */
-  newmode.name    = id_from_str("b", 1);
-  newmode.code    = irm_b;
+	/* boolean */
+	newmode.name    = new_id_from_chars("b", 1);
+	newmode.code    = irm_b;
 
-  mode_b = register_mode(&newmode);
+	mode_b = register_mode(&newmode);
 
-/* Data Modes */
+	/* Data Modes */
+	newmode.vector_elem = 1;
 
-  /* Float Number Modes */
-  newmode.sort    = irms_float_number;
-  newmode.arithmetic = irma_ieee754;
+	/* Float Number Modes */
+	newmode.sort       = irms_float_number;
+	newmode.arithmetic = irma_ieee754;
 
-  /* float */
-  newmode.name    = id_from_str("F", 1);
-  newmode.code    = irm_F;
-  newmode.sign    = 1;
-  newmode.align   = 4;
-  newmode.size    = 32;
+	/* float */
+	newmode.name    = new_id_from_chars("F", 1);
+	newmode.code    = irm_F;
+	newmode.sign    = 1;
+	newmode.size    = 32;
 
-  mode_F = register_mode(&newmode);
+	mode_F = register_mode(&newmode);
 
-  /* double */
-  newmode.name    = id_from_str("D", 1);
-  newmode.code    = irm_D;
-  newmode.sign    = 1;
-  newmode.align   = 4;
-  newmode.size    = 64;
+	/* double */
+	newmode.name    = new_id_from_chars("D", 1);
+	newmode.code    = irm_D;
+	newmode.sign    = 1;
+	newmode.size    = 64;
 
-  mode_D = register_mode(&newmode);
+	mode_D = register_mode(&newmode);
 
-  /* extended */
-  newmode.name    = id_from_str("E", 1);
-  newmode.code    = irm_E;
-  newmode.sign    = 1;
-  newmode.align   = 4;
-  newmode.size    = 80;
+	/* extended */
+	newmode.name    = new_id_from_chars("E", 1);
+	newmode.code    = irm_E;
+	newmode.sign    = 1;
+	newmode.size    = 80;
 
-  mode_E = register_mode(&newmode);
+	mode_E = register_mode(&newmode);
 
-  /* Integer Number Modes */
-  newmode.sort    = irms_int_number;
-  newmode.arithmetic = irma_twos_complement;
+	/* Integer Number Modes */
+	newmode.sort         = irms_int_number;
+	newmode.arithmetic   = irma_twos_complement;
 
-  /* signed byte */
-  newmode.name    = id_from_str("Bs", 2);
-  newmode.code    = irm_Bs;
-  newmode.sign    = 1;
-  newmode.align   = 1;
-  newmode.size    = 8;
+	/* signed byte */
+	newmode.name         = new_id_from_chars("Bs", 2);
+	newmode.code         = irm_Bs;
+	newmode.sign         = 1;
+	newmode.size         = 8;
+	newmode.modulo_shift = 32;
 
-  mode_Bs = register_mode(&newmode);
+	mode_Bs = register_mode(&newmode);
 
-  /* unsigned byte */
-  newmode.name    = id_from_str("Bu", 2);
-  newmode.code    = irm_Bu;
-  newmode.arithmetic = irma_twos_complement;
-  newmode.sign    = 0;
-  newmode.align   = 1;
-  newmode.size    = 8;
+	/* unsigned byte */
+	newmode.name         = new_id_from_chars("Bu", 2);
+	newmode.code         = irm_Bu;
+	newmode.arithmetic   = irma_twos_complement;
+	newmode.sign         = 0;
+	newmode.size         = 8;
+	newmode.modulo_shift = 32;
 
-  mode_Bu = register_mode(&newmode);
+	mode_Bu = register_mode(&newmode);
 
-  /* signed short integer */
-  newmode.name    = id_from_str("Hs", 2);
-  newmode.code    = irm_Hs;
-  newmode.sign    = 1;
-  newmode.align   = 2;
-  newmode.size    = 16;
+	/* signed short integer */
+	newmode.name         = new_id_from_chars("Hs", 2);
+	newmode.code         = irm_Hs;
+	newmode.sign         = 1;
+	newmode.size         = 16;
+	newmode.modulo_shift = 32;
 
-  mode_Hs = register_mode(&newmode);
+	mode_Hs = register_mode(&newmode);
 
-  /* unsigned short integer */
-  newmode.name    = id_from_str("Hu", 2);
-  newmode.code    = irm_Hu;
-  newmode.sign    = 0;
-  newmode.align   = 2;
-  newmode.size    = 16;
-
-  mode_Hu = register_mode(&newmode);
-
-  /* signed integer */
-  newmode.name    = id_from_str("Is", 2);
-  newmode.code    = irm_Is;
-  newmode.sign    = 1;
-  newmode.align   = 4;
-  newmode.size    = 32;
-
-  mode_Is = register_mode(&newmode);
-
-  /* unsigned integer */
-  newmode.name    = id_from_str("Iu", 2);
-  newmode.code    = irm_Iu;
-  newmode.sign    = 0;
-  newmode.align   = 4;
-  newmode.size    = 32;
-
-  mode_Iu = register_mode(&newmode);
-
-  /* signed long integer */
-  newmode.name    = id_from_str("Ls", 2);
-  newmode.code    = irm_Ls;
-  newmode.sign    = 1;
-  newmode.align   = 4;
-  newmode.size    = 64;
-
-  mode_Ls = register_mode(&newmode);
-
-  /* unsigned long integer */
-  newmode.name    = id_from_str("Lu", 2);
-  newmode.code    = irm_Lu;
-  newmode.sign    = 0;
-  newmode.align   = 4;
-  newmode.size    = 64;
-
-  mode_Lu = register_mode(&newmode);
-
-  /* Character Modes */
-  newmode.sort    = irms_character;
-  newmode.arithmetic = irma_none;
-
-  /* Character */
-  newmode.name    = id_from_str("C", 1);
-  newmode.code    = irm_C;
-  newmode.sign    = 0;
-  newmode.align   = 1;
-  newmode.size    = 8;
-
-  mode_C = register_mode(&newmode);
-
-  /* Unicode character */
-  newmode.name    = id_from_str("U", 1);
-  newmode.code    = irm_U;
-  newmode.sign    = 0;
-  newmode.align   = 2;
-  newmode.size    = 16;
-
-  mode_U = register_mode(&newmode);
-
-  /* Reference Modes */
-  newmode.sort    = irms_reference;
-  newmode.arithmetic = irma_twos_complement;
-
-  /* pointer */
-  newmode.name    = id_from_str("P", 1);
-  newmode.code    = irm_P;
-  newmode.sign    = 0;
-  newmode.align   = 4;
-  newmode.size    = 32;
-
-  mode_P = register_mode(&newmode);
-
-  /* set the machine specific modes to the predifined ones */
-  mode_P_mach = mode_P;
+	/* unsigned short integer */
+	newmode.name         = new_id_from_chars("Hu", 2);
+	newmode.code         = irm_Hu;
+	newmode.sign         = 0;
+	newmode.size         = 16;
+	newmode.modulo_shift = 32;
+
+	mode_Hu = register_mode(&newmode);
+
+	/* signed integer */
+	newmode.name         = new_id_from_chars("Is", 2);
+	newmode.code         = irm_Is;
+	newmode.sign         = 1;
+	newmode.size         = 32;
+	newmode.modulo_shift = 32;
+
+	mode_Is = register_mode(&newmode);
+
+	/* unsigned integer */
+	newmode.name         = new_id_from_chars("Iu", 2);
+	newmode.code         = irm_Iu;
+	newmode.sign         = 0;
+	newmode.size         = 32;
+	newmode.modulo_shift = 32;
+
+	mode_Iu = register_mode(&newmode);
+
+	/* signed long integer */
+	newmode.name         = new_id_from_chars("Ls", 2);
+	newmode.code         = irm_Ls;
+	newmode.sign         = 1;
+	newmode.size         = 64;
+	newmode.modulo_shift = 64;
+
+	mode_Ls = register_mode(&newmode);
+
+	/* unsigned long integer */
+	newmode.name         = new_id_from_chars("Lu", 2);
+	newmode.code         = irm_Lu;
+	newmode.sign         = 0;
+	newmode.size         = 64;
+	newmode.modulo_shift = 64;
+
+	mode_Lu = register_mode(&newmode);
+
+	/* signed long long integer */
+	newmode.name         = new_id_from_chars("LLs", 3);
+	newmode.code         = irm_LLs;
+	newmode.sign         = 1;
+	newmode.size         = 128;
+	newmode.modulo_shift = 128;
+
+	mode_LLs = register_mode(&newmode);
+
+	/* unsigned long long integer */
+	newmode.name         = new_id_from_chars("LLu", 3);
+	newmode.code         = irm_LLu;
+	newmode.sign         = 0;
+	newmode.size         = 128;
+	newmode.modulo_shift = 128;
+
+	mode_LLu = register_mode(&newmode);
+
+	/* Reference Mode */
+	newmode.sort       = irms_reference;
+	newmode.arithmetic = irma_twos_complement;
+
+	/* pointer */
+	newmode.name         = new_id_from_chars("P", 1);
+	newmode.code         = irm_P;
+	newmode.sign         = 0;
+	newmode.size         = 32;
+	newmode.modulo_shift = 0;
+	newmode.eq_signed    = mode_Is;
+	newmode.eq_unsigned  = mode_Iu;
+
+	mode_P = register_mode(&newmode);
+
+	/* set the machine specific modes to the predefined ones */
+	mode_P_code = mode_P;
+	mode_P_data = mode_P;
+}
+
+/* find a signed mode for an unsigned integer mode */
+ir_mode *find_unsigned_mode(const ir_mode *mode) {
+	ir_mode n = *mode;
+
+	assert(mode->sort == irms_int_number);
+	n.sign = 0;
+	return find_mode(&n);
+}
+
+/* find an unsigned mode for a signed integer mode */
+ir_mode *find_signed_mode(const ir_mode *mode) {
+	ir_mode n = *mode;
+
+	assert(mode->sort == irms_int_number);
+	n.sign = 1;
+	return find_mode(&n);
+}
+
+/* finds a integer mode with 2*n bits for an integer mode with n bits. */
+ir_mode *find_double_bits_int_mode(const ir_mode *mode) {
+	ir_mode n = *mode;
+
+	assert(mode->sort == irms_int_number && mode->arithmetic == irma_twos_complement);
+
+	n.size = 2*mode->size;
+	return find_mode(&n);
+}
+
+/*
+ * Returns non-zero if the given mode honors signed zero's, i.e.,
+ * a +0 and a -0 exists and handled differently.
+ */
+int mode_honor_signed_zeros(const ir_mode *mode) {
+	/* for floating point, we know that IEEE 754 has +0 and -0,
+	 * but always handles it identical.
+	 */
+	return
+		mode->sort == irms_float_number &&
+		mode->arithmetic != irma_ieee754;
+}
+
+/*
+ * Returns non-zero if the given mode might overflow on unary Minus.
+ *
+ * This does NOT happen on IEEE 754.
+ */
+int mode_overflow_on_unary_Minus(const ir_mode *mode) {
+	if (mode->sort == irms_float_number)
+		return mode->arithmetic == irma_ieee754 ? 0 : 1;
+	return 1;
+}
+
+/*
+ * Returns non-zero if the mode has a reversed wrap-around
+ * logic, especially (a + x) - x == a.
+ *
+ * This is normally true for integer modes, not for floating
+ * point modes.
+ */
+int mode_wrap_around(const ir_mode *mode) {
+	/* FIXME: better would be an extra mode property */
+	return mode_is_int(mode);
+}
+
+void finish_mode(void) {
+	obstack_free(&modes, 0);
+
+	mode_T   = NULL;
+	mode_X   = NULL;
+	mode_M   = NULL;
+	mode_BB  = NULL;
+	mode_ANY = NULL;
+	mode_BAD = NULL;
+
+	mode_F   = NULL;
+	mode_D   = NULL;
+	mode_E   = NULL;
+
+	mode_Bs  = NULL;
+	mode_Bu  = NULL;
+	mode_Hs  = NULL;
+	mode_Hu  = NULL;
+	mode_Is  = NULL;
+	mode_Iu  = NULL;
+	mode_Ls  = NULL;
+	mode_Lu  = NULL;
+
+	mode_b   = NULL;
+
+	mode_P      = NULL;
+	mode_P_code = NULL;
+	mode_P_data = NULL;
 }