X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firmode.c;h=49c14ac13804881a01f05395b15f9302aacbbc74;hb=202b43933e0cc0b71cc7fbe2b092b94efb7fd30e;hp=f16d7a869ec1ebdb20f9f719197116b8edabb06c;hpb=d743c7ac94ab7d3f964b075ea2bb9f6c25ec4d52;p=libfirm

diff --git a/ir/ir/irmode.c b/ir/ir/irmode.c
index f16d7a869..49c14ac13 100644
--- a/ir/ir/irmode.c
+++ b/ir/ir/irmode.c
@@ -1,573 +1,998 @@
-/* Copyright (C) 1998 - 2000 by Universitaet Karlsruhe
-* All rights reserved.
-*
-* Authors: Martin Trapp, Christian Schaefer
-*
-*/
+/*
+ * 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  $Id$
+ */
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#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"
+#include "array.h"
+#include "error.h"
+
+/** Obstack to hold all modes. */
+static struct obstack modes;
+
+/** Number of defined modes. */
+static int num_modes = 0;
+
+/** The list of all currently existing modes. */
+static ir_mode **mode_list;
+
+const char *get_mode_arithmetic_name(ir_mode_arithmetic ari)
+{
+#define X(a)    case a: return #a
+	switch (ari) {
+		X(irma_uninitialized);
+		X(irma_none);
+		X(irma_twos_complement);
+		X(irma_ones_complement);
+		X(irma_int_BCD);
+		X(irma_ieee754);
+		X(irma_float_BCD);
+		default: return "<unknown>";
+	}
+#undef X
+}
 
-/* $Id$ */
+/**
+ * Compare modes that don't need to have their code field
+ * correctly set
+ *
+ * TODO: Add other fields
+ **/
+static inline 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;
+}
+
+/**
+ * searches the modes obstack for the given mode and returns
+ * a pointer on an equal mode already in the array, NULL if
+ * none found
+ */
+static ir_mode *find_mode(const ir_mode *m) {
+	int i;
+	for (i = ARR_LEN(mode_list) - 1; i >= 0; --i) {
+		ir_mode *n = mode_list[i];
+		if (modes_are_equal(n, m))
+			return n;
+	}
+	return NULL;
+}
 
-#ifdef HAVE_CONFIG_H
-# include <config.h>
+#ifdef FIRM_STATISTICS
+/* return the mode index, only needed for statistics */
+int stat_find_mode_index(const ir_mode *m) {
+	int i;
+	for (i = ARR_LEN(mode_list) - 1; i >= 0; --i) {
+		ir_mode *n = mode_list[i];
+		if (modes_are_equal(n, m))
+			return i;
+	}
+	return -1;
+}
+
+/* return the mode for a given index, only needed for statistics */
+ir_mode *stat_mode_for_index(int idx) {
+	if (0 <= idx  && idx < ARR_LEN(mode_list))
+		return mode_list[idx];
+	return NULL;
+}
 #endif
 
-# include "irmode_t.h"
-# include <malloc.h>
-# include <stddef.h>
-# include <string.h>
-# include "tv.h"
+/**
+ * sets special values of modes
+ */
+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;
+	}
+}
+
+/* * *
+ * globals defined in irmode.h
+ * * */
 
+/* --- Predefined modes --- */
+
+/* FIRM internal modes: */
 ir_mode *mode_T;
-ir_mode *mode_F;
-ir_mode *mode_D;
-ir_mode *mode_E;
-ir_mode *mode_Bs;
-ir_mode *mode_Bu;
-ir_mode *mode_Hs;
+ir_mode *mode_X;
+ir_mode *mode_M;
+ir_mode *mode_BB;
+ir_mode *mode_ANY;
+ir_mode *mode_BAD;
+
+/* predefined numerical modes: */
+ir_mode *mode_F;    /* float */
+ir_mode *mode_D;    /* double */
+ir_mode *mode_E;    /* long double */
+
+ir_mode *mode_Bs;   /* integral values, signed and unsigned */
+ir_mode *mode_Bu;   /* 8 bit */
+ir_mode *mode_Hs;   /* 16 bit */
 ir_mode *mode_Hu;
-ir_mode *mode_Is;
+ir_mode *mode_Is;   /* 32 bit */
 ir_mode *mode_Iu;
-ir_mode *mode_Ls;
+ir_mode *mode_Ls;   /* 64 bit */
 ir_mode *mode_Lu;
-ir_mode *mode_C;
-ir_mode *mode_U;
+ir_mode *mode_LLs;  /* 128 bit */
+ir_mode *mode_LLu;
+
 ir_mode *mode_b;
 ir_mode *mode_P;
-ir_mode *mode_X;
-ir_mode *mode_M;
-ir_mode *mode_BB;
 
-INLINE ir_mode *get_modeT() { return mode_T; }
-INLINE ir_mode *get_modeF() { return mode_F; }
-INLINE ir_mode *get_modeD() { return mode_D; }
-INLINE ir_mode *get_modeE() { return mode_E; }
-INLINE ir_mode *get_modeBs() { return mode_Bs; }
-INLINE ir_mode *get_modeBu() { return mode_Bu; }
-INLINE ir_mode *get_modeHs() { return mode_Hs; }
-INLINE ir_mode *get_modeHu() { return mode_Hu; }
-INLINE ir_mode *get_modeIs() { return mode_Is; }
-INLINE ir_mode *get_modeIu() { return mode_Iu; }
-INLINE ir_mode *get_modeLs() { return mode_Ls; }
-INLINE ir_mode *get_modeLu() { return mode_Lu; }
-INLINE ir_mode *get_modeC() { return mode_C; }
-INLINE ir_mode *get_modeU() { return mode_U; }
-INLINE ir_mode *get_modeb() { return mode_b; }
-INLINE ir_mode *get_modeP() { return mode_P; }
-INLINE ir_mode *get_modeX() { return mode_X; }
-INLINE ir_mode *get_modeM() { return mode_M; }
-INLINE ir_mode *get_modeBB() { return mode_BB; }
-
-void
-init_mode (void)
-{
-  /* allocate all modes. We need to memset them as tarval_vrfy
-     reads fields before they are initialized: It compares to
-     min/max when tarvals for min/max are allocated!  */
-  mode_T  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_T, 0, sizeof(ir_mode));
-  mode_F  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_F, 0, sizeof(ir_mode));
-  mode_D  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_D, 0, sizeof(ir_mode));
-  mode_E  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_E, 0, sizeof(ir_mode));
-  mode_Bs = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Bs, 0, sizeof(ir_mode));
-  mode_Bu = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Bu, 0, sizeof(ir_mode));
-  mode_Hs = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Hs, 0, sizeof(ir_mode));
-  mode_Hu = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Hu, 0, sizeof(ir_mode));
-  mode_Is = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Is, 0, sizeof(ir_mode));
-  mode_Iu = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Iu, 0, sizeof(ir_mode));
-  mode_Ls = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Ls, 0, sizeof(ir_mode));
-  mode_Lu = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_Lu, 0, sizeof(ir_mode));
-  mode_C  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_C, 0, sizeof(ir_mode));
-  mode_U  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_U, 0, sizeof(ir_mode));
-  mode_b  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_b, 0, sizeof(ir_mode));
-  mode_P  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_P, 0, sizeof(ir_mode));
-  mode_X  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_X, 0, sizeof(ir_mode));
-  mode_M  = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_M, 0, sizeof(ir_mode));
-  mode_BB = (ir_mode *) malloc (sizeof (ir_mode)); memset(mode_BB, 0, sizeof(ir_mode));
-
-  mode_T->code = irm_T;
-  mode_F->code = irm_F;
-  mode_D->code = irm_D;
-  mode_E->code = irm_E;
-  mode_Bs->code = irm_Bs;
-  mode_Bu->code = irm_Bu;
-  mode_Hs->code = irm_Hs;
-  mode_Hu->code = irm_Hu;
-  mode_Is->code = irm_Is;
-  mode_Iu->code = irm_Iu;
-  mode_Ls->code = irm_Ls;
-  mode_Lu->code = irm_Lu;
-  mode_C->code = irm_C;
-  mode_U->code = irm_U;
-  mode_b->code = irm_b;
-  mode_P->code = irm_P;
-  mode_X->code = irm_X;
-  mode_M->code = irm_M;
-  mode_BB->code = irm_BB;
-
-  /* initialize all modes */
-
-  mode_T->name = id_from_str ("T", 1);
-  mode_T->fsigned = 0;
-  mode_T->ffloat = 0;
-
-  /* float */
-  mode_F->name = id_from_str ("F", 1);
-  mode_F->fsigned = 1;
-  mode_F->ffloat = 1;
-  mode_F->ld_align = 4;
-  mode_F->size = 4;
-
-  /* double */
-  mode_D->name = id_from_str ("D", 1);
-  mode_D->fsigned = 1;
-  mode_D->ffloat = 1;
-  mode_D->ld_align = 4;
-  mode_D->size = 8;
-
-  /* extended */
-  mode_E->name = id_from_str ("E", 1);
-  mode_E->fsigned = 1;
-  mode_E->ffloat = 1;
-  mode_E->ld_align = 4;
-  mode_E->size = 12;
-
-  /* signed byte */
-  mode_Bs->name = id_from_str ("Bs", 1);
-  mode_Bs->fsigned = 1;
-  mode_Bs->ffloat = 0;
-  mode_Bs->ld_align = 1;
-  mode_Bs->size = 1;
-  mode_Bs->min = tarval_from_long (mode_Ls, 0xffffff80);
-  mode_Bs->max = tarval_from_long (mode_Ls, 0x0000007f);
-  mode_Bs->null = tarval_from_long (mode_Bs, 0);
-
-  /* unsigned byte */
-  mode_Bu->name = id_from_str ("Bu", 1);
-  mode_Bu->fsigned = 0;
-  mode_Bu->ffloat = 0;
-  mode_Bu->ld_align = 1;
-  mode_Bu->size = 1;
-  mode_Bu->min = tarval_from_long (mode_Lu, 0x00000000);
-  mode_Bu->max = tarval_from_long (mode_Lu, 0x000000ff);
-  mode_Bu->null = tarval_from_long (mode_Bu, 0);
-
-  /* signed short integer */
-  mode_Hs->name = id_from_str ("Hs", 1);
-  mode_Hs->fsigned = 1;
-  mode_Hs->ffloat = 0;
-  mode_Hs->ld_align = 2;
-  mode_Hs->size = 2;
-  mode_Hs->min = tarval_from_long (mode_Ls, 0xffff8000);
-  mode_Hs->max = tarval_from_long (mode_Ls, 0x00007fff);
-  mode_Hs->null = tarval_from_long (mode_Hs, 0);
-
-  /* unsigned short integer */
-  mode_Hu->name = id_from_str ("Hu", 1);
-  mode_Hu->fsigned = 0;
-  mode_Hu->ffloat = 0;
-  mode_Hu->ld_align = 2;
-  mode_Hu->size = 2;
-  mode_Hu->min = tarval_from_long (mode_Lu, 0x00000000);
-  mode_Hu->max = tarval_from_long (mode_Lu, 0x0000ffff);
-  mode_Hu->null = tarval_from_long (mode_Hu, 0);
-
-  /* signed integer */
-  mode_Is->name = id_from_str ("Is", 1);
-  mode_Is->fsigned = 1;
-  mode_Is->ffloat = 0;
-  mode_Is->ld_align = 4;
-  mode_Is->size = 4;
-  mode_Is->min = tarval_from_long (mode_Ls, 0x80000000);
-  mode_Is->max = tarval_from_long (mode_Ls, 0x7fffffff);
-  mode_Is->null = tarval_from_long (mode_Is, 0);
-
-  /* unsigned integer */
-  mode_Iu->name = id_from_str ("Iu", 1);
-  mode_Iu->fsigned = 0;
-  mode_Iu->ffloat = 0;
-  mode_Iu->ld_align = 4;
-  mode_Iu->size = 4;
-  mode_Iu->min = tarval_from_long (mode_Lu, 0x00000000);
-  mode_Iu->max = tarval_from_long (mode_Lu, 0xffffffff);
-  mode_Iu->null = tarval_from_long (mode_Iu, 0);
-
-  /* signed long integer */
-  mode_Ls->name = id_from_str ("Ls", 1);
-  mode_Ls->fsigned = 1;
-  mode_Ls->ffloat = 0;
-  mode_Ls->ld_align = 8;
-  mode_Ls->size = 8;
-  mode_Ls->min = tarval_from_long (mode_Ls, 0x80000000);
-  mode_Ls->max = tarval_from_long (mode_Ls, 0x7fffffff);
-  mode_Ls->null = tarval_from_long (mode_Ls, 0);
-
-  /* unsigned long integer */
-  mode_Lu->name = id_from_str ("Lu", 1);
-  mode_Lu->fsigned = 0;
-  mode_Lu->ffloat = 0;
-  mode_Lu->ld_align = 8;
-  mode_Lu->size = 8;
-  mode_Lu->min = tarval_from_long (mode_Lu, 0x00000000);
-  mode_Lu->max = tarval_from_long (mode_Lu, 0xffffffff);
-  mode_Lu->null = tarval_from_long (mode_Lu, 0);
-
-  /* character */
-  mode_C->name = id_from_str ("C", 1);
-  mode_C->fsigned = 0;
-  mode_C->ffloat = 0;
-  mode_C->ld_align = 1;
-  mode_C->size = 1;
-  mode_C->min = tarval_from_long (mode_Ls, 0xffffff80);
-  mode_C->max = tarval_from_long (mode_Ls, 0x0000007f);
-  mode_C->null = tarval_from_long (mode_C, 0);
-
-  /* unicode character */
-  mode_C->name = id_from_str ("U", 1);
-  mode_C->fsigned = 0;
-  mode_C->ffloat = 0;
-  mode_C->ld_align = 1;
-  mode_C->size = 2;
-  mode_C->min = tarval_from_long (mode_Ls, 0xffff8000);
-  mode_C->max = tarval_from_long (mode_Ls, 0x00007fff);
-  mode_C->null = tarval_from_long (mode_U, 0);
-
-  /* boolean */
-  mode_b->name = id_from_str ("b", 1);
-  mode_b->fsigned = 0;
-  mode_b->ffloat = 0;
-
-  /* pointer */
-  mode_P->name = id_from_str ("P", 1);
-  mode_P->fsigned = 0;
-  mode_P->ffloat = 0;
-  mode_P->ld_align = 4;
-  mode_P->size = 4;
-  mode_P->min = tarval_from_long (mode_Lu, 0x00000000);
-  mode_P->max = tarval_from_long (mode_Lu, 0xffffffff);
-  mode_P->null = tarval_from_long (mode_P, 0);
-
-  /* Execution */
-  mode_X->name = id_from_str ("X", 1);
-  mode_X->fsigned = 0;
-  mode_X->ffloat = 0;
-
-  /* Memory */
-  mode_M->name = id_from_str ("M", 1);
-  mode_M->fsigned = 0;
-  mode_M->ffloat = 0;
-
-  mode_BB->name = id_from_str ("BB", 1);
-  mode_BB->fsigned = 0;
-  mode_BB->ffloat = 0;
-}
-
-/* Functions for the direct access to all attributes od a ir_mode */
-
-modecode
-get_mode_modecode (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->code;
+/* machine specific modes */
+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 */
+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();
 }
 
-/*
-INLINE void
-set_mode_modecode (ir_mode *mode, modecode code)
-{
-  mode->code = code;
+ir_mode *(get_modeP_data)(void) {
+	return _get_modeP_data();
 }
-*/
 
-ident *
-get_mode_ident (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->name;
+void set_modeP_code(ir_mode *p) {
+	assert(mode_is_reference(p));
+	mode_P_code = p;
 }
 
-/*
-INLINE void
-set_mode_ident (ir_mode *mode, ident *name)
-{
-  mode->name = name;
+void set_modeP_data(ir_mode *p) {
+	assert(mode_is_reference(p));
+	mode_P_data = p;
 }
-*/
 
-INLINE const char *
-get_mode_name       (ir_mode *mode) {
-  assert(mode);
-  return id_to_str(mode->name);
+/**
+ * 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;
+
+	assert(new_mode);
+
+	/* copy mode struct to modes array */
+	mode = (ir_mode *)obstack_copy(&modes, new_mode, sizeof(*mode));
+	ARR_APP1(ir_mode*, mode_list, mode);
+
+	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);
+
+	hook_new_mode(new_mode, mode);
+	return mode;
 }
-/* void  set_mode_name       (ir_mode *mode, char *name);    */
 
-int
-get_mode_size (ir_mode *mode)
+/*
+ * Creates a new mode.
+ */
+ir_mode *new_ir_mode(const char *name, ir_mode_sort sort, int bit_size, int sign,
+                     ir_mode_arithmetic arithmetic, unsigned int modulo_shift)
 {
-  assert(mode && "no mode given");
-  return mode->size;
+	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:
+		panic("internal modes cannot be user defined");
+
+	case irms_float_number:
+	case irms_int_number:
+	case irms_reference:
+		mode = register_mode(&mode_tmpl);
+		break;
+	}
+	assert(mode != NULL);
+	return mode;
 }
+
 /*
-INLINE void
-set_mode_size (ir_mode *mode, int size)
+ * Creates a new vector mode.
+ */
+ir_mode *new_ir_vector_mode(const char *name, ir_mode_sort sort, int bit_size, unsigned num_of_elem, int sign,
+                            ir_mode_arithmetic arithmetic, unsigned int modulo_shift)
 {
-  mode->size = size;
+	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:
+		panic("internal modes cannot be user defined");
+
+	case irms_reference:
+		panic("only integer and floating point modes can be vectorized");
+
+	case irms_float_number:
+		panic("not yet implemented");
+
+	case irms_int_number:
+		mode = register_mode(&mode_tmpl);
+	}
+	assert(mode != NULL);
+	return mode;
 }
-*/
 
-int
-get_mode_ld_align (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->ld_align;
+/* Functions for the direct access to all attributes of an ir_mode */
+ir_modecode (get_mode_modecode)(const ir_mode *mode) {
+	return _get_mode_modecode(mode);
 }
 
-/*
-INLINE void
-set_mode_ld_align (ir_mode *mode, int ld_align)
-{
-  mode->ld_align = ld_align;
+ident *(get_mode_ident)(const ir_mode *mode) {
+	return _get_mode_ident(mode);
 }
-*/
 
-tarval *
-get_mode_min (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->min;
+const char *get_mode_name(const ir_mode *mode) {
+	return get_id_str(mode->name);
 }
 
-/*
-INLINE void
-set_mode_min (ir_mode *mode, tarval *min)
-{
-mode->min = min;
+ir_mode_sort (get_mode_sort)(const ir_mode* mode) {
+	return _get_mode_sort(mode);
 }
-*/
 
-tarval *
-get_mode_max (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->max;
+unsigned (get_mode_size_bits)(const ir_mode *mode) {
+	return _get_mode_size_bits(mode);
 }
 
-/*
-INLINE void
-set_mode_max (ir_mode *mode, tarval *max)
-{
-  mode->max = max;
+unsigned (get_mode_size_bytes)(const ir_mode *mode) {
+	return _get_mode_size_bytes(mode);
 }
-*/
 
-tarval *
-get_mode_null (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->null;
+int (get_mode_sign)(const ir_mode *mode) {
+	return _get_mode_sign(mode);
 }
 
-/*
-INLINE void
-set_mode_null (ir_mode *mode, tarval *null)
-{
-  mode->null = null;
+ir_mode_arithmetic (get_mode_arithmetic)(const ir_mode *mode) {
+	return get_mode_arithmetic(mode);
 }
-*/
 
-unsigned
-get_mode_fsigned (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->fsigned;
+
+/* 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);
 }
 
-/*
-INLINE voida
-set_mode_fsigned (ir_mode *mode, unsigned fsigned)
-{
-  mode->fsigned = fsigned;
+unsigned int (get_mode_n_vector_elems)(const ir_mode *mode) {
+	return _get_mode_vector_elems(mode);
 }
-*/
 
-unsigned
-get_mode_ffloat (ir_mode *mode)
-{
-  assert(mode && "no mode given");
-  return mode->ffloat;
+void *(get_mode_link)(const ir_mode *mode) {
+	return _get_mode_link(mode);
 }
 
-/*
-INLINE void
-set_mode_ffloat (ir_mode *mode, unsigned ffloat)
-{
-  mode->ffloat = ffloat;
-}
-*/
-
-/* 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_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}
-*/
-
-int
-mode_is_signed (ir_mode *mode)
-{
-  int res;
-  unsigned fsigned;
-
-  assert(mode && "no mode given");
-  fsigned = get_mode_fsigned (mode);
-  if (fsigned == 1) {
-    res = 1;
-  }
-  else {
-    res = 0;
-  }
-  return res;
-}
-
-INLINE int
-mode_is_float (ir_mode *mode)
-{
-  int res;
-  unsigned ffloat;
+void (set_mode_link)(ir_mode *mode, void *l) {
+	_set_mode_link(mode, l);
+}
 
-  assert(mode && "no mode given");
-  ffloat = get_mode_ffloat (mode);
-  if (ffloat == 1) {
-    res = 1;
-  }
-  else {
-    res = 0;
-  }
-  return res;
+tarval *get_mode_min(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_data(mode));
+
+	return mode->min;
 }
 
+tarval *get_mode_max(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_data(mode));
 
-INLINE int
-mode_is_int (ir_mode *mode)
-{
-  int res;
-  modecode code;
+	return mode->max;
+}
 
-  assert(mode && "no mode given");
-  code = get_mode_modecode (mode);
-  if ((code >= irm_Bs) &&  (code <= irm_Lu)) {
-    res = 1;
-  }
-  else {
-    res = 0;
-  }
-  return res;
+tarval *get_mode_null(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_datab(mode));
+
+	return mode->null;
 }
 
+tarval *get_mode_one(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_datab(mode));
 
-INLINE int
-mode_is_num (ir_mode *mode)
-{
-  int res;
+	return mode->one;
+}
 
-  assert(mode && "no mode given");
-  if (mode_is_int (mode) || mode_is_float (mode)) {
-    res = 1;
-  }
-  else {
-    res = 0;
-  }
-  return res;
+tarval *get_mode_minus_one(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_data(mode));
+
+	return mode->minus_one;
 }
 
-INLINE int
-mode_is_data (ir_mode *mode)
-{
-  int res;
-  modecode code;
-
-  assert(mode && "no mode given");
-  code = get_mode_modecode (mode);
-  if (mode_is_num (mode) ||
-      code == irm_C || code == irm_U || code == irm_P) {
-    res = 1;
-  }
-  else {
-    res = 0;
-  }
-  return res;
-}
-
-int
-mode_is_datab (ir_mode *mode)
-{
-  int res;
-  modecode code;
-
-  assert(mode && "no mode given");
-  code = get_mode_modecode (mode);
-  if (mode_is_data (mode) || code == irm_b ) {
-    res = 1;
-  }
-  else {
-    res = 0;
-  }
-  return res;
-}
-
-int
-mode_is_dataM (ir_mode *mode)
-{
-  int res;
-  modecode code;
+tarval *get_mode_all_one(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_datab(mode));
+	return mode->all_one;
+}
+
+tarval *get_mode_infinite(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_float(mode));
+
+	return get_tarval_plus_inf(mode);
+}
+
+tarval *get_mode_NAN(ir_mode *mode) {
+	assert(mode);
+	assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+	assert(mode_is_float(mode));
+
+	return get_tarval_nan(mode);
+}
+
+int is_mode(const void *thing) {
+	return get_kind(thing) == k_ir_mode;
+}
+
+int (mode_is_signed)(const ir_mode *mode) {
+	return _mode_is_signed(mode);
+}
+
+int (mode_is_float)(const ir_mode *mode) {
+	return _mode_is_float(mode);
+}
+
+int (mode_is_int)(const ir_mode *mode) {
+	return _mode_is_int(mode);
+}
+
+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);
+}
 
-  assert(mode && "no mode given");
-  code = get_mode_modecode (mode);
-  if (mode_is_data (mode) || code == irm_M) {
-    res = 1;
-  }
-  else {
-    res = 0;
-  }
-  return res;
+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);
 }
 
 /* Returns true if sm can be converted to lm without loss. */
-bool
-smaller_mode(ir_mode *sm, ir_mode *lm) {
-  if ((mode_is_int(sm) && mode_is_int(lm)) &&
-      get_mode_modecode(sm) <= get_mode_modecode(lm))
-    return true;
-  if ((mode_is_float(sm) && mode_is_float(lm)) &&
-      get_mode_modecode(sm) <= get_mode_modecode(lm))
-    return true;
-  return(false);
+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 lengths ?*/
+		return 0;
+
+	case irms_internal_boolean:
+		return mode_is_int(lm);
+
+	default:
+		break;
+	}
+
+	/* else */
+	return 0;
+}
+
+/* Returns true if a value of mode sm can be converted into mode lm
+   and backwards without loss. */
+int values_in_mode(const ir_mode *sm, const ir_mode *lm) {
+	int sm_bits, lm_bits;
+	ir_mode_arithmetic arith;
+
+	assert(sm);
+	assert(lm);
+
+	if (sm == lm) return 1;
+
+	if (sm == mode_b)
+		return mode_is_int(lm);
+
+	sm_bits = get_mode_size_bits(sm);
+	lm_bits = get_mode_size_bits(lm);
+
+	arith = get_mode_arithmetic(sm);
+	if (arith != get_mode_arithmetic(lm))
+		return 0;
+
+	switch (arith) {
+		case irma_twos_complement:
+		case irma_ieee754:
+			return get_mode_size_bits(sm) <= get_mode_size_bits(lm);
+
+		default:
+			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);
+	mode_list = NEW_ARR_F(ir_mode*, 0);
+
+	num_modes  =  0;
+	/* initialize predefined modes */
+
+	/* 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;
+
+	/* Basic Block */
+	newmode.name    = new_id_from_chars("BB", 2);
+	newmode.code    = irm_BB;
+
+	mode_BB = register_mode(&newmode);
+
+	/* eXecution */
+	newmode.name    = new_id_from_chars("X", 1);
+	newmode.code    = irm_X;
+
+	mode_X = register_mode(&newmode);
+
+	/* Memory Modes */
+	newmode.sort    = irms_memory;
+
+	/* Memory */
+	newmode.name    = new_id_from_chars("M", 1);
+	newmode.code    = irm_M;
+
+	mode_M = register_mode(&newmode);
+
+	/* Auxiliary Modes */
+	newmode.sort    = irms_auxiliary,
+
+	/* Tuple */
+	newmode.name    = new_id_from_chars("T", 1);
+	newmode.code    = irm_T;
+
+	mode_T = register_mode(&newmode);
+
+	/* ANY */
+	newmode.name    = new_id_from_chars("ANY", 3);
+	newmode.code    = irm_ANY;
+
+	mode_ANY = register_mode(&newmode);
+
+	/* BAD */
+	newmode.name    = new_id_from_chars("BAD", 3);
+	newmode.code    = irm_BAD;
+
+	mode_BAD = register_mode(&newmode);
+
+	/* Internal Boolean Modes */
+	newmode.sort    = irms_internal_boolean;
+
+	/* boolean */
+	newmode.name    = new_id_from_chars("b", 1);
+	newmode.code    = irm_b;
+
+	mode_b = register_mode(&newmode);
+
+	/* Data Modes */
+	newmode.vector_elem = 1;
+
+	/* Float Number Modes */
+	newmode.sort       = irms_float_number;
+	newmode.arithmetic = irma_ieee754;
+
+	/* float */
+	newmode.name    = new_id_from_chars("F", 1);
+	newmode.code    = irm_F;
+	newmode.sign    = 1;
+	newmode.size    = 32;
+
+	mode_F = register_mode(&newmode);
+
+	/* double */
+	newmode.name    = new_id_from_chars("D", 1);
+	newmode.code    = irm_D;
+	newmode.sign    = 1;
+	newmode.size    = 64;
+
+	mode_D = register_mode(&newmode);
+
+	/* extended */
+	newmode.name    = new_id_from_chars("E", 1);
+	newmode.code    = irm_E;
+	newmode.sign    = 1;
+	/* note that the tarval module is calculating with 80 bits, but we use
+	 * 96 bits, as that is what will be stored to memory by most hardware */
+	newmode.size    = 96;
+
+	mode_E = register_mode(&newmode);
+
+	/* Integer Number Modes */
+	newmode.sort         = irms_int_number;
+	newmode.arithmetic   = irma_twos_complement;
+
+	/* 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);
+
+	/* 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);
+
+	/* 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);
+
+	/* 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;
+
+	/* allowed for reference mode */
+	if (mode->sort == irms_reference)
+		n.sort = irms_int_number;
+
+	assert(n.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);
+}
+
+/*
+ * Returns non-zero if the cast from mode src to mode dst is a
+ * reinterpret cast (ie. only the bit pattern is reinterpreted,
+ * no conversion is done)
+ */
+int is_reinterpret_cast(const ir_mode *src, const ir_mode *dst) {
+	ir_mode_arithmetic ma;
+
+	if (src == dst)
+		return 1;
+	if (get_mode_size_bits(src) != get_mode_size_bits(dst))
+		return 0;
+	ma = get_mode_arithmetic(src);
+	if (ma != get_mode_arithmetic(dst))
+		return 0;
+
+	return ma == irma_twos_complement || ma == irma_ones_complement;
+}
+
+void finish_mode(void) {
+	obstack_free(&modes, 0);
+	DEL_ARR_F(mode_list);
+
+	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;
 }