/*
- * Project: libFIRM
- * File name: ir/ir/irmode.c
- * Purpose: Data modes of operations.
- * Author: Martin Trapp, Christian Schaefer
- * Modified by: Goetz Lindenmaier, Mathias Heil
- * Created:
- * CVS-ID: $Id$
- * Copyright: (c) 1998-2003 Universität Karlsruhe
- * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ * 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.
*/
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-#ifdef HAVE_STDLIB_H
-# include <stdlib.h>
-#endif
-#ifdef HAVE_STRING_H
-# include <string.h>
-#endif
-
-# include <stddef.h>
+/**
+ * @file
+ * @brief Data modes of operations.
+ * @author Martin Trapp, Christian Schaefer, Goetz Lindenmaier, Mathias Heil
+ * @version $Id$
+ */
+#include "config.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 <stdlib.h>
+#include <string.h>
-/* * *
- * local values
- * * */
+#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"
-/** dynamic array to hold all modes */
+/** Obstack to hold all modes. */
static struct obstack modes;
-/** number of defined modes */
-static int num_modes;
+/** Number of defined modes. */
+static int num_modes = 0;
-/* * *
- * local functions
- * * */
+/** 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
+}
/**
* Compare modes that don't need to have their code field
*
* TODO: Add other fields
**/
-INLINE static int modes_are_equal(const ir_mode *m, const ir_mode *n) {
+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 &&
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);
-}
-
/**
* 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) {
- 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));
+ 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;
-
- n = nn;
- nn = next_obstack_adr(&modes, n, sizeof(*n));
}
+ return NULL;
+}
- 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));
- }
+#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
/**
* sets special values of modes
*/
static void set_mode_values(ir_mode* mode) {
switch (get_mode_sort(mode)) {
- case irms_character:
+ case irms_reference:
case irms_int_number:
case irms_float_number:
mode->min = get_tarval_min(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->null = tarval_b_false;
mode->one = tarval_b_true;
mode->minus_one = tarval_bad;
- break;
-
- case irms_reference:
- mode->min = tarval_bad;
- mode->max = tarval_bad;
- mode->null = get_tarval_null(mode);
- mode->one = tarval_bad;
- mode->minus_one = tarval_bad;
+ mode->all_one = tarval_b_true;
break;
case irms_auxiliary:
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;
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_modeC(void) { return mode_C; }
-ir_mode *get_modeU(void) { return mode_U; }
+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; }
/* 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++;
+ 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);
/*
* Creates a new mode.
*/
-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 *new_ir_mode(const char *name, ir_mode_sort sort, int bit_size, int sign,
+ ir_mode_arithmetic arithmetic, unsigned int modulo_shift)
{
ir_mode mode_tmpl;
ir_mode *mode = NULL;
case irms_control_flow:
case irms_memory:
case irms_internal_boolean:
- assert(0 && "internal modes cannot be user defined");
- break;
+ panic("internal modes cannot be user defined");
case irms_float_number:
case irms_int_number:
case irms_reference:
- case irms_character:
mode = register_mode(&mode_tmpl);
+ break;
}
+ assert(mode != NULL);
return 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)
+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)
{
ir_mode mode_tmpl;
ir_mode *mode = NULL;
case irms_control_flow:
case irms_memory:
case irms_internal_boolean:
- assert(0 && "internal modes cannot be user defined");
- break;
+ panic("internal modes cannot be user defined");
case irms_reference:
- case irms_character:
- assert(0 && "only integer and floating point modes can be vectorized");
- break;
+ panic("only integer and floating point modes can be vectorized");
case irms_float_number:
- assert(0 && "not yet implemented");
- break;
+ panic("not yet implemented");
case irms_int_number:
mode = register_mode(&mode_tmpl);
}
+ assert(mode != NULL);
return mode;
}
/* Functions for the direct access to all attributes of an ir_mode */
-modecode
-(get_mode_modecode)(const ir_mode *mode) {
+ir_modecode (get_mode_modecode)(const ir_mode *mode) {
return _get_mode_modecode(mode);
}
-ident *
-(get_mode_ident)(const ir_mode *mode) {
+ident *(get_mode_ident)(const ir_mode *mode) {
return _get_mode_ident(mode);
}
-const char *
-get_mode_name(const ir_mode *mode) {
+const char *get_mode_name(const ir_mode *mode) {
return get_id_str(mode->name);
}
-mode_sort
-(get_mode_sort)(const ir_mode* mode) {
+ir_mode_sort (get_mode_sort)(const ir_mode* mode) {
return _get_mode_sort(mode);
}
-int
-(get_mode_size_bits)(const ir_mode *mode) {
+unsigned (get_mode_size_bits)(const ir_mode *mode) {
return _get_mode_size_bits(mode);
}
-int
-(get_mode_size_bytes)(const ir_mode *mode) {
+unsigned (get_mode_size_bytes)(const ir_mode *mode) {
return _get_mode_size_bytes(mode);
}
-int
-(get_mode_sign)(const ir_mode *mode) {
+int (get_mode_sign)(const ir_mode *mode) {
return _get_mode_sign(mode);
}
-int
-(get_mode_arithmetic)(const ir_mode *mode) {
+ir_mode_arithmetic (get_mode_arithmetic)(const ir_mode *mode) {
return get_mode_arithmetic(mode);
}
* 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) {
+unsigned int (get_mode_modulo_shift)(const ir_mode *mode) {
return _get_mode_modulo_shift(mode);
}
-unsigned int
-(get_mode_n_vector_elems)(const ir_mode *mode) {
+unsigned int (get_mode_n_vector_elems)(const ir_mode *mode) {
return _get_mode_vector_elems(mode);
}
-void *
-(get_mode_link)(const ir_mode *mode) {
+void *(get_mode_link)(const ir_mode *mode) {
return _get_mode_link(mode);
}
-void
-(set_mode_link)(ir_mode *mode, void *l) {
+void (set_mode_link)(ir_mode *mode, void *l) {
_set_mode_link(mode, l);
}
-tarval *
-get_mode_min(ir_mode *mode) {
+tarval *get_mode_min(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_data(mode));
return mode->min;
}
-tarval *
-get_mode_max(ir_mode *mode) {
+tarval *get_mode_max(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_data(mode));
return mode->max;
}
-tarval *
-get_mode_null(ir_mode *mode) {
+tarval *get_mode_null(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < num_modes);
- assert(mode_is_data(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) {
+tarval *get_mode_one(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < num_modes);
- assert(mode_is_data(mode));
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+ assert(mode_is_datab(mode));
return mode->one;
}
-tarval *
-get_mode_minus_one(ir_mode *mode) {
+tarval *get_mode_minus_one(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_data(mode));
return mode->minus_one;
}
-tarval *
-get_mode_infinite(ir_mode *mode) {
+tarval *get_mode_all_one(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < num_modes);
+ 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) {
+tarval *get_mode_NAN(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_float(mode));
return get_tarval_nan(mode);
}
-int
-is_mode(void *thing) {
- if (get_kind(thing) == k_ir_mode)
- return 1;
- else
- return 0;
+int is_mode(const void *thing) {
+ return get_kind(thing) == k_ir_mode;
}
-int
-(mode_is_signed)(const ir_mode *mode) {
+int (mode_is_signed)(const ir_mode *mode) {
return _mode_is_signed(mode);
}
-int
-(mode_is_float)(const ir_mode *mode) {
+int (mode_is_float)(const ir_mode *mode) {
return _mode_is_float(mode);
}
-int
-(mode_is_int)(const ir_mode *mode) {
+int (mode_is_int)(const ir_mode *mode) {
return _mode_is_int(mode);
}
-int
-(mode_is_character)(const ir_mode *mode) {
- return _mode_is_character(mode);
-}
-
-int
-(mode_is_reference)(const ir_mode *mode) {
+int (mode_is_reference)(const ir_mode *mode) {
return _mode_is_reference(mode);
}
-int
-(mode_is_num)(const ir_mode *mode) {
+int (mode_is_num)(const ir_mode *mode) {
return _mode_is_num(mode);
}
-int
-(mode_is_numP)(const ir_mode *mode) {
- return _mode_is_numP(mode);
-}
-
-int
-(mode_is_data)(const ir_mode *mode) {
+int (mode_is_data)(const ir_mode *mode) {
return _mode_is_data(mode);
}
-int
-(mode_is_datab)(const ir_mode *mode) {
+int (mode_is_datab)(const ir_mode *mode) {
return _mode_is_datab(mode);
}
-int
-(mode_is_dataM)(const ir_mode *mode) {
+int (mode_is_dataM)(const ir_mode *mode) {
return _mode_is_dataM(mode);
}
-int
-(mode_is_float_vector)(const ir_mode *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) {
+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. */
-int
-smaller_mode(const ir_mode *sm, const ir_mode *lm) {
+int smaller_mode(const ir_mode *sm, const ir_mode *lm) {
int sm_bits, lm_bits;
assert(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 ( get_mode_arithmetic(sm) == get_mode_arithmetic(lm)
- && get_mode_arithmetic(sm) == irma_twos_complement) {
- return lm_bits >= sm_bits;
- } else if (mode_is_signed(sm)) {
- if ( mode_is_signed(lm) && (lm_bits >= sm_bits) )
- return 1;
- } else if (mode_is_signed(lm)) {
- if (lm_bits > sm_bits + 1)
- return 1;
- } else if (lm_bits >= sm_bits) {
- return 1;
+ 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;
break;
case irms_reference:
- /* do exist machines out there with different pointer lenghts ?*/
+ /* do exist machines out there with different pointer lengths ?*/
return 0;
+ case irms_internal_boolean:
+ return mode_is_int(lm);
+
default:
break;
}
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));
}
/* initialization, build the default modes */
-void
-init_mode (void) {
+void init_mode(void) {
ir_mode newmode;
obstack_init(&modes);
+ mode_list = NEW_ARR_F(ir_mode*, 0);
num_modes = 0;
/* initialize predefined modes */
newmode.name = new_id_from_chars("E", 1);
newmode.code = irm_E;
newmode.sign = 1;
- newmode.size = 80;
+ /* 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);
mode_Lu = register_mode(&newmode);
- /* Character Modes */
- newmode.sort = irms_character;
- newmode.arithmetic = irma_twos_complement;
- newmode.modulo_shift = 0;
-
- /* Character */
- newmode.name = new_id_from_chars("C", 1);
- newmode.code = irm_C;
- newmode.sign = 0;
- newmode.size = 8;
+ /* 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_C = register_mode(&newmode);
+ mode_LLs = register_mode(&newmode);
- /* Unicode character */
- newmode.name = new_id_from_chars("U", 1);
- newmode.code = irm_U;
+ /* unsigned long long integer */
+ newmode.name = new_id_from_chars("LLu", 3);
+ newmode.code = irm_LLu;
newmode.sign = 0;
- newmode.size = 16;
+ newmode.size = 128;
+ newmode.modulo_shift = 128;
- mode_U = register_mode(&newmode);
+ mode_LLu = register_mode(&newmode);
- /* Reference Modes */
- newmode.sort = irms_reference;
+ /* Reference Mode */
+ newmode.sort = irms_reference;
newmode.arithmetic = irma_twos_complement;
/* pointer */
ir_mode *find_unsigned_mode(const ir_mode *mode) {
ir_mode n = *mode;
- assert(mode->sort == irms_int_number);
+ /* 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);
}
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_Ls = NULL;
mode_Lu = NULL;
- mode_C = NULL;
- mode_U = NULL;
mode_b = NULL;
- mode_P = NULL;
+ mode_P = NULL;
mode_P_code = NULL;
mode_P_data = NULL;
}
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