/*
- * Project: libFIRM
- * File name: ir/tv/tv.c
- * Purpose: Representation of and static computations on target machine
- * values.
- * Author: Mathias Heil
- * Modified by:
- * Created:
- * CVS-ID: $Id$
- * Copyright: (c) 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.
*/
-/*
- * Values are stored in a format depending upon chosen arithmetic
- * module. Default uses strcalc and fltcalc.
+/**
+ * @file
+ * @brief Representation of and static computations on target machine
+ * values.
+ * @date 2003
+ * @author Mathias Heil
+ * @version $Id$
+ * @brief
*
+ * Values are stored in a format depending upon chosen arithmetic
+ * module. Default uses strcalc and fltcalc.
+ * This implementation assumes:
+ * - target has IEEE-754 floating-point arithmetic.
*/
-
-/* This implementation assumes:
- * - target has IEEE-754 floating-point arithmetic. */
-
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
+#include "config.h"
#include <assert.h> /* assertions */
#include <stdlib.h> /* atoi() */
-#ifdef HAVE_STRING_H
-# include <string.h> /* nice things for strings */
-#endif
+#include <string.h>
#ifdef HAVE_STRINGS_H
#include <strings.h> /* strings.h also includes bsd only function strcasecmp */
#endif
#include <stdlib.h>
-#ifdef HAVE_ALLOCA_H
-# include <alloca.h>
-#endif
-#ifdef HAVE_MALLOC_H
-# include <malloc.h>
-#endif
#include "tv_t.h"
#include "set.h" /* to store tarvals in */
#include "irnode.h" /* defines boolean return values (pnc_number)*/
#include "strcalc.h"
#include "fltcalc.h"
+#include "irtools.h"
+#include "xmalloc.h"
+#include "firm_common.h"
+#include "error.h"
/** Size of hash tables. Should correspond to average number of distinct constant
target values */
/* unused, float to int doesn't work yet */
enum float_to_int_mode {
- TRUNCATE,
- ROUND
+ TRUNCATE,
+ ROUND
};
#define GET_FLOAT_TO_INT_MODE() TRUNCATE
#define FIND_VALUE(val, size) (set_find(values, (val), size, hash_val((val), size)))
#define fail_verify(a) _fail_verify((a), __FILE__, __LINE__)
-#if 0
-static long long count = 0;
-# define ANNOUNCE() printf(__FILE__": call no. %lld (%s)\n", count++, __FUNCTION__);
-#else
-# define ANNOUNCE() ((void)0)
-#endif
-/****************************************************************************
- * private variables
- ****************************************************************************/
-static struct set *tarvals; /* container for tarval structs */
-static struct set *values; /* container for values */
+
+/** A set containing all existing tarvals. */
+static struct set *tarvals = NULL;
+/** A set containing all existing values. */
+static struct set *values = NULL;
+
+/** The carry flag for SOME operations. -1 means UNDEFINED here */
+static int carry_flag = -1;
+
+/** The integer overflow mode. */
static tarval_int_overflow_mode_t int_overflow_mode = TV_OVERFLOW_WRAP;
+/** if this is set non-zero, the constant folding for floating point is OFF */
+static int no_float = 0;
+
+/** IEEE-754r half precision */
+static const ieee_descriptor_t half_desc = { 5, 10, 0, NORMAL };
+/** IEEE-754 single precision */
+static const ieee_descriptor_t single_desc = { 8, 23, 0, NORMAL };
+/** IEEE-754 double precision */
+static const ieee_descriptor_t double_desc = { 11, 52, 0, NORMAL };
+/** Intel x87 extended precision */
+static const ieee_descriptor_t extended_desc = { 15, 63, 1, NORMAL };
+
+/** IEEE-754r quad precision */
+static const ieee_descriptor_t quad_desc = { 15, 112, 0, NORMAL };
+
/****************************************************************************
* private functions
****************************************************************************/
static int hash_tv(tarval *tv);
static void _fail_verify(tarval *tv, const char* file, int line)
{
- /* print a memory image of the tarval and throw an assertion */
- if (tv)
- printf("%s:%d: Invalid tarval:\n mode: %s\n value: [%p]\n", file, line, get_mode_name(tv->mode), tv->value);
- else
- printf("%s:%d: Invalid tarval (null)", file, line);
- assert(0);
+ /* print a memory image of the tarval and throw an assertion */
+ if (tv)
+ panic("%s:%d: Invalid tarval: mode: %F\n value: [%p]", file, line, tv->mode, tv->value);
+ else
+ panic("%s:%d: Invalid tarval (null)", file, line);
}
#ifdef __GNUC__
-INLINE static void tarval_verify(tarval *tv) __attribute__ ((unused));
+inline static void tarval_verify(tarval *tv) __attribute__ ((unused));
#endif
-INLINE static void tarval_verify(tarval *tv)
+inline static void tarval_verify(tarval *tv)
{
- assert(tv);
- assert(tv->mode);
- assert(tv->value);
+ assert(tv);
+ assert(tv->mode);
+ assert(tv->value);
- if ((tv == tarval_bad) || (tv == tarval_undefined)) return;
- if ((tv == tarval_b_true) || (tv == tarval_b_false)) return;
+ if ((tv == tarval_bad) || (tv == tarval_undefined)) return;
+ if ((tv == tarval_b_true) || (tv == tarval_b_false)) return;
- if (!FIND_TARVAL(tv)) fail_verify(tv);
- if (tv->length > 0 && !FIND_VALUE(tv->value, tv->length)) fail_verify(tv);
-
- return;
+ if (!FIND_TARVAL(tv)) fail_verify(tv);
+ if (tv->length > 0 && !FIND_VALUE(tv->value, tv->length)) fail_verify(tv);
}
#endif /* NDEBUG */
-static int hash_tv(tarval *tv)
-{
- return ((unsigned int)tv->value ^ (unsigned int)tv->mode) + tv->length;
+/** Hash a tarval. */
+static int hash_tv(tarval *tv) {
+ return (PTR_TO_INT(tv->value) ^ PTR_TO_INT(tv->mode)) + tv->length;
}
-static int hash_val(const void *value, unsigned int length)
-{
- unsigned int i;
- unsigned int hash = 0;
+/** Hash a value. Treat it as a byte array. */
+static int hash_val(const void *value, unsigned int length) {
+ unsigned int i;
+ unsigned int hash = 0;
- /* scramble the byte - array */
- for (i = 0; i < length; i++)
- {
- hash += (hash << 5) ^ (hash >> 27) ^ ((char*)value)[i];
- hash += (hash << 11) ^ (hash >> 17);
- }
+ /* scramble the byte - array */
+ for (i = 0; i < length; ++i) {
+ hash += (hash << 5) ^ (hash >> 27) ^ ((char*)value)[i];
+ hash += (hash << 11) ^ (hash >> 17);
+ }
- return hash;
+ return hash;
}
-/* finds tarval with value/mode or creates new tarval */
-static tarval *get_tarval(const void *value, int length, ir_mode *mode)
-{
- tarval tv;
-
- tv.mode = mode;
- tv.length = length;
- if (length > 0) {
- /* if there already is such a value, it is returned, else value
- * is copied into the set */
- tv.value = INSERT_VALUE(value, length);
- } else {
- tv.value = value;
- }
- /* if there is such a tarval, it is returned, else tv is copied
- * into the set */
- return (tarval *)INSERT_TARVAL(&tv);
+static int cmp_tv(const void *p1, const void *p2, size_t n) {
+ const tarval *tv1 = p1;
+ const tarval *tv2 = p2;
+ (void) n;
+
+ assert(tv1->kind == k_tarval);
+ assert(tv2->kind == k_tarval);
+ if (tv1->mode < tv2->mode)
+ return -1;
+ if (tv1->mode > tv2->mode)
+ return 1;
+ if (tv1->length < tv2->length)
+ return -1;
+ if (tv1->length > tv2->length)
+ return 1;
+ if (tv1->value < tv2->value)
+ return -1;
+ if (tv1->value > tv2->value)
+ return 1;
+
+ return 0;
+}
+
+/** finds tarval with value/mode or creates new tarval */
+static tarval *get_tarval(const void *value, int length, ir_mode *mode) {
+ tarval tv;
+
+ tv.kind = k_tarval;
+ tv.mode = mode;
+ tv.length = length;
+ if (length > 0) {
+ /* if there already is such a value, it is returned, else value
+ * is copied into the set */
+ char *temp = alloca(length);
+ memcpy(temp, value, length);
+ if (get_mode_arithmetic(mode) == irma_twos_complement) {
+ sign_extend(temp, mode);
+ }
+ tv.value = INSERT_VALUE(temp, length);
+ } else {
+ tv.value = value;
+ }
+ /* if there is such a tarval, it is returned, else tv is copied
+ * into the set */
+ return (tarval *)INSERT_TARVAL(&tv);
}
/**
*/
static tarval *get_tarval_overflow(const void *value, int length, ir_mode *mode)
{
- switch (get_mode_sort(mode))
- {
- case irms_int_number:
- if (sc_comp(value, get_mode_max(mode)->value) == 1) {
- switch (GET_OVERFLOW_MODE()) {
- case TV_OVERFLOW_SATURATE:
- return get_mode_max(mode);
- case TV_OVERFLOW_WRAP:
- {
- char *temp = alloca(sc_get_buffer_length());
- char *diff = alloca(sc_get_buffer_length());
- sc_sub(get_mode_max(mode)->value, get_mode_min(mode)->value, diff);
- sc_val_from_ulong(1, temp);
- sc_add(diff, temp, diff);
- sc_sub(value, diff, temp);
- while (sc_comp(temp, get_mode_max(mode)->value) == 1)
- sc_sub(temp, diff, temp);
- return get_tarval(temp, length, mode);
- }
- case TV_OVERFLOW_BAD:
- return tarval_bad;
- default:
- return get_tarval(value, length, mode);
- }
- }
- if (sc_comp(value, get_mode_min(mode)->value) == -1) {
- switch (GET_OVERFLOW_MODE()) {
- case TV_OVERFLOW_SATURATE:
- return get_mode_min(mode);
- case TV_OVERFLOW_WRAP:
- {
- char *temp = alloca(sc_get_buffer_length());
- char *diff = alloca(sc_get_buffer_length());
- sc_sub(get_mode_max(mode)->value, get_mode_min(mode)->value, diff);
- sc_val_from_ulong(1, temp);
- sc_add(diff, temp, diff);
- sc_add(value, diff, temp);
- while (sc_comp(temp, get_mode_max(mode)->value) == 1)
- sc_add(temp, diff, temp);
- return get_tarval(temp, length, mode);
- }
- case TV_OVERFLOW_BAD:
- return tarval_bad;
- default:
- return get_tarval(value, length, mode);
- }
- }
- break;
-
- case irms_float_number:
- if (SWITCH_NOINFINITY && fc_is_inf(value))
- {
- return fc_is_negative(value)?get_mode_min(mode):get_mode_max(mode);
- }
-
- if (SWITCH_NODENORMALS && fc_is_subnormal(value))
- {
- return get_mode_null(mode);
- }
- break;
- default:
- break;
- }
- return get_tarval(value, length, mode);
+ char *temp;
+
+ switch (get_mode_sort(mode)) {
+ case irms_reference:
+ /* addresses always wrap around */
+ temp = alloca(sc_get_buffer_length());
+ memcpy(temp, value, sc_get_buffer_length());
+ sc_truncate(get_mode_size_bits(mode), temp);
+ /* the sc_ module expects that all bits are set ... */
+ sign_extend(temp, mode);
+ return get_tarval(temp, length, mode);
+
+ case irms_int_number:
+ if (sc_comp(value, get_mode_max(mode)->value) == 1) {
+ switch (GET_OVERFLOW_MODE()) {
+ case TV_OVERFLOW_SATURATE:
+ return get_mode_max(mode);
+ case TV_OVERFLOW_WRAP:
+ temp = alloca(sc_get_buffer_length());
+ memcpy(temp, value, sc_get_buffer_length());
+ sc_truncate(get_mode_size_bits(mode), temp);
+ /* the sc_ module expects that all bits are set ... */
+ sign_extend(temp, mode);
+ return get_tarval(temp, length, mode);
+ case TV_OVERFLOW_BAD:
+ return tarval_bad;
+ default:
+ return get_tarval(value, length, mode);
+ }
+ }
+ if (sc_comp(value, get_mode_min(mode)->value) == -1) {
+ switch (GET_OVERFLOW_MODE()) {
+ case TV_OVERFLOW_SATURATE:
+ return get_mode_min(mode);
+ case TV_OVERFLOW_WRAP: {
+ char *temp = alloca(sc_get_buffer_length());
+ memcpy(temp, value, sc_get_buffer_length());
+ sc_truncate(get_mode_size_bits(mode), temp);
+ return get_tarval(temp, length, mode);
+ }
+ case TV_OVERFLOW_BAD:
+ return tarval_bad;
+ default:
+ return get_tarval(value, length, mode);
+ }
+ }
+ break;
+
+ case irms_float_number:
+ if (SWITCH_NOINFINITY && fc_is_inf(value)) {
+ /* clip infinity to maximum value */
+ return fc_is_negative(value) ? get_mode_min(mode) : get_mode_max(mode);
+ }
+
+ if (SWITCH_NODENORMALS && fc_is_subnormal(value)) {
+ /* clip denormals to zero */
+ return get_mode_null(mode);
+ }
+ break;
+
+ default:
+ break;
+ }
+ return get_tarval(value, length, mode);
}
-
/*
* public variables declared in tv.h
*/
-static tarval reserved_tv[5];
+static tarval reserved_tv[6];
-tarval *tarval_bad = &reserved_tv[0];
-tarval *tarval_undefined = &reserved_tv[1];
-tarval *tarval_b_false = &reserved_tv[2];
-tarval *tarval_b_true = &reserved_tv[3];
-tarval *tarval_P_void = &reserved_tv[4];
+tarval *tarval_b_false = &reserved_tv[0];
+tarval *tarval_b_true = &reserved_tv[1];
+tarval *tarval_bad = &reserved_tv[2];
+tarval *tarval_undefined = &reserved_tv[3];
+tarval *tarval_reachable = &reserved_tv[4];
+tarval *tarval_unreachable = &reserved_tv[5];
+
+/**
+ * get the float descriptor for given mode.
+ */
+static const ieee_descriptor_t *get_descriptor(const ir_mode *mode) {
+ switch (get_mode_size_bits(mode)) {
+ case 16: return &half_desc;
+ case 32: return &single_desc;
+ case 64: return &double_desc;
+ case 80:
+ case 96: return &extended_desc;
+ case 128: return &quad_desc;
+ default:
+ panic("Unsupported mode in get_descriptor()");
+ return NULL;
+ }
+}
/*
* public functions declared in tv.h
*/
tarval *new_tarval_from_str(const char *str, size_t len, ir_mode *mode)
{
- ANNOUNCE();
- assert(str);
- assert(len);
- assert(mode);
-
- switch (get_mode_sort(mode))
- {
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- assert(0);
- break;
-
- case irms_internal_boolean:
- /* match [tT][rR][uU][eE]|[fF][aA][lL][sS][eE] */
- if (strcasecmp(str, "true")) return tarval_b_true;
- else if (strcasecmp(str, "false")) return tarval_b_true;
- else
- /* XXX This is C semantics */
- return atoi(str) ? tarval_b_true : tarval_b_false;
-
- case irms_float_number:
- switch(get_mode_size_bits(mode)) {
- case 32:
- fc_val_from_str(str, len, 8, 23, NULL);
- break;
- case 64:
- fc_val_from_str(str, len, 11, 52, NULL);
- break;
- case 80:
- fc_val_from_str(str, len, 15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
-
- case irms_int_number:
- case irms_character:
- sc_val_from_str(str, len, NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
-
- case irms_reference:
- return get_tarval(str, len, mode);
- }
-
- assert(0); /* can't be reached, can it? */
- return NULL;
+ const ieee_descriptor_t *desc;
+
+ assert(str);
+ assert(len);
+ assert(mode);
+
+ switch (get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ panic("Unsupported tarval creation with mode %F", mode);
+
+ case irms_internal_boolean:
+ /* match [tT][rR][uU][eE]|[fF][aA][lL][sS][eE] */
+ if (!strcasecmp(str, "true"))
+ return tarval_b_true;
+ else if (!strcasecmp(str, "false"))
+ return tarval_b_false;
+ else
+ /* XXX This is C semantics */
+ return atoi(str) ? tarval_b_true : tarval_b_false;
+
+ case irms_float_number:
+ desc = get_descriptor(mode);
+ fc_val_from_str(str, len, desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+
+ case irms_reference:
+ if (!strcasecmp(str, "null"))
+ return get_tarval_null(mode);
+ /* FALLTHROUGH */
+ case irms_int_number:
+ sc_val_from_str(str, len, NULL, mode);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+ }
+ panic("Unsupported tarval creation with mode %F", mode);
}
/*
* helper function, create a tarval from long
*/
-tarval *new_tarval_from_long(long l, ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- switch(get_mode_sort(mode))
- {
- case irms_internal_boolean:
- /* XXX C semantics ! */
- return l ? tarval_b_true : tarval_b_false ;
-
- case irms_int_number:
- case irms_character:
- sc_val_from_long(l, NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
-
- case irms_float_number:
- return new_tarval_from_double((long double)l, mode);
-
- case irms_reference:
- return l ? tarval_bad : get_tarval(NULL, 0, mode); /* null pointer or tarval_bad */
-
- default:
- assert(0 && "unsupported mode sort");
- }
- return NULL;
+tarval *new_tarval_from_long(long l, ir_mode *mode) {
+ assert(mode);
+
+ switch (get_mode_sort(mode)) {
+ case irms_internal_boolean:
+ /* XXX C semantics ! */
+ return l ? tarval_b_true : tarval_b_false ;
+
+ case irms_reference:
+ /* same as integer modes */
+ case irms_int_number:
+ sc_val_from_long(l, NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+
+ case irms_float_number:
+ return new_tarval_from_double((long double)l, mode);
+
+ default:
+ assert(0 && "unsupported mode sort");
+ }
+ return NULL;
}
/* returns non-zero if can be converted to long */
-int tarval_is_long(tarval *tv)
-{
- mode_sort sort = get_mode_sort(tv->mode);
-
- ANNOUNCE();
- if (sort != irms_int_number && sort != irms_character) return 0;
-
- if (get_mode_size_bits(tv->mode) > sizeof(long)<<3)
- {
- /* the value might be too big to fit in a long */
- sc_max_from_bits(sizeof(long)<<3, 0, NULL);
- if (sc_comp(sc_get_buffer(), tv->value) == -1)
- {
- /* really doesn't fit */
- return 0;
- }
- }
- return 1;
+int tarval_is_long(tarval *tv) {
+ if (!mode_is_int(tv->mode) && !mode_is_reference(tv->mode))
+ return 0;
+
+ if (get_mode_size_bits(tv->mode) > (int) (sizeof(long) << 3)) {
+ /* the value might be too big to fit in a long */
+ sc_max_from_bits(sizeof(long) << 3, 0, NULL);
+ if (sc_comp(sc_get_buffer(), tv->value) == -1) {
+ /* really doesn't fit */
+ return 0;
+ }
+ }
+ return 1;
}
/* this might overflow the machine's long, so use only with small values */
-long get_tarval_long(tarval* tv)
-{
- ANNOUNCE();
- assert(tarval_is_long(tv) && "tarval too big to fit in long");
+long get_tarval_long(tarval* tv) {
+ assert(tarval_is_long(tv) && "tarval too big to fit in long");
- return sc_val_to_long(tv->value);
+ return sc_val_to_long(tv->value);
}
-tarval *new_tarval_from_double(long double d, ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode && (get_mode_sort(mode) == irms_float_number));
-
- switch (get_mode_size_bits(mode)) {
- case 32:
- fc_val_from_float(d, 8, 23, NULL);
- break;
- case 64:
- fc_val_from_float(d, 11, 52, NULL);
- break;
- case 80:
- fc_val_from_float(d, 15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+tarval *new_tarval_from_double(long double d, ir_mode *mode) {
+ const ieee_descriptor_t *desc;
+
+ assert(mode && (get_mode_sort(mode) == irms_float_number));
+ desc = get_descriptor(mode);
+ fc_val_from_ieee754(d, desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
}
/* returns non-zero if can be converted to double */
-int tarval_is_double(tarval *tv)
-{
- ANNOUNCE();
- assert(tv);
+int tarval_is_double(tarval *tv) {
+ assert(tv);
- return (get_mode_sort(tv->mode) == irms_float_number);
+ return (get_mode_sort(tv->mode) == irms_float_number);
}
-long double get_tarval_double(tarval *tv)
-{
- ANNOUNCE();
- assert(tarval_is_double(tv));
+long double get_tarval_double(tarval *tv) {
+ assert(tarval_is_double(tv));
- return fc_val_to_float(tv->value);
+ return fc_val_to_ieee754(tv->value);
}
/* get the mode of the tarval */
ir_mode *(get_tarval_mode)(const tarval *tv) {
- return _get_tarval_mode(tv);
+ return _get_tarval_mode(tv);
}
/*
* value.
* The functions get_mode_{Max,Min,...} return tarvals retrieved from these
* functions, but these are stored on initialization of the irmode module and
- * therefore the irmode functions should be prefered to the functions below.
+ * therefore the irmode functions should be preferred to the functions below.
*/
tarval *(get_tarval_bad)(void) {
- return _get_tarval_bad();
+ return _get_tarval_bad();
}
tarval *(get_tarval_undefined)(void) {
- return _get_tarval_undefined();
+ return _get_tarval_undefined();
}
tarval *(get_tarval_b_false)(void) {
- return _get_tarval_b_false();
+ return _get_tarval_b_false();
}
tarval *(get_tarval_b_true)(void) {
- return _get_tarval_b_true();
+ return _get_tarval_b_true();
}
-tarval *(get_tarval_P_void)(void) {
- return _get_tarval_P_void();
+tarval *(get_tarval_reachable)(void) {
+ return _get_tarval_reachable();
}
-tarval *get_tarval_max(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- switch(get_mode_sort(mode))
- {
- case irms_reference:
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- assert(0);
- break;
-
- case irms_internal_boolean:
- return tarval_b_true;
-
- case irms_float_number:
- switch(get_mode_size_bits(mode))
- {
- case 32:
- fc_get_max(8, 23, NULL);
- break;
- case 64:
- fc_get_max(11, 52, NULL);
- break;
- case 80:
- fc_get_max(15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
-
- case irms_int_number:
- case irms_character:
- sc_max_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
- }
- return tarval_bad;
-}
-
-tarval *get_tarval_min(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- switch(get_mode_sort(mode))
- {
- case irms_reference:
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- assert(0);
- break;
-
- case irms_internal_boolean:
- return tarval_b_false;
-
- case irms_float_number:
- switch(get_mode_size_bits(mode))
- {
- case 32:
- fc_get_min(8, 23, NULL);
- break;
- case 64:
- fc_get_min(11, 52, NULL);
- break;
- case 80:
- fc_get_min(15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
-
- case irms_int_number:
- case irms_character:
- sc_min_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
- }
- return tarval_bad;
-}
-
-tarval *get_tarval_null(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
+tarval *(get_tarval_unreachable)(void) {
+ return _get_tarval_unreachable();
+}
+
+tarval *get_tarval_max(ir_mode *mode) {
+ const ieee_descriptor_t *desc;
+
+ assert(mode);
+ if (get_mode_n_vector_elems(mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ switch (get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ panic("mode %F does not support maximum value", mode);
+
+ case irms_internal_boolean:
+ return tarval_b_true;
+
+ case irms_float_number:
+ desc = get_descriptor(mode);
+ fc_get_max(desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+
+ case irms_reference:
+ case irms_int_number:
+ sc_max_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+ }
+ return tarval_bad;
+}
+
+tarval *get_tarval_min(ir_mode *mode) {
+ const ieee_descriptor_t *desc;
+
+ assert(mode);
+ if (get_mode_n_vector_elems(mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ switch (get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ panic("mode %F does not support minimum value", mode);
+
+ case irms_internal_boolean:
+ return tarval_b_false;
+
+ case irms_float_number:
+ desc = get_descriptor(mode);
+ fc_get_min(desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+
+ case irms_reference:
+ case irms_int_number:
+ sc_min_from_bits(get_mode_size_bits(mode), mode_is_signed(mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+ }
+ return tarval_bad;
+}
+
+/** The bit pattern for the pointer NULL */
+static long _null_value = 0;
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+tarval *get_tarval_null(ir_mode *mode) {
+ assert(mode);
- switch(get_mode_sort(mode))
- {
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- case irms_internal_boolean:
- assert(0);
- break;
+ if (get_mode_n_vector_elems(mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- case irms_float_number:
- return new_tarval_from_double(0.0, mode);
+ switch (get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ panic("mode %F does not support null value", mode);
- case irms_int_number:
- case irms_character:
- return new_tarval_from_long(0l, mode);
+ case irms_float_number:
+ return new_tarval_from_double(0.0, mode);
- case irms_reference:
- return tarval_P_void;
- }
- return tarval_bad;
+ case irms_internal_boolean:
+ case irms_int_number:
+ return new_tarval_from_long(0l, mode);
+
+ case irms_reference:
+ return new_tarval_from_long(_null_value, mode);
+ }
+ return tarval_bad;
}
-tarval *get_tarval_one(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- switch(get_mode_sort(mode))
- {
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- case irms_internal_boolean:
- case irms_reference:
- assert(0);
- break;
-
- case irms_float_number:
- return new_tarval_from_double(1.0, mode);
-
- case irms_int_number:
- case irms_character:
- return new_tarval_from_long(1l, mode);
- break;
- }
- return tarval_bad;
-}
-
-tarval *get_tarval_minus_one(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- switch(get_mode_sort(mode))
- {
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- case irms_internal_boolean:
- case irms_reference:
- assert(0);
- break;
-
- case irms_float_number:
- return mode_is_signed(mode) ? new_tarval_from_double(-1.0, mode) : tarval_bad;
-
- case irms_int_number:
- case irms_character:
- return mode_is_signed(mode) ? new_tarval_from_long(-1l, mode) : tarval_bad;
- }
- return tarval_bad;
-}
-
-tarval *get_tarval_nan(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- if (get_mode_sort(mode) == irms_float_number) {
- switch(get_mode_size_bits(mode))
- {
- case 32:
- fc_get_qnan(8, 23, NULL);
- break;
- case 64:
- fc_get_qnan(11, 52, NULL);
- break;
- case 80:
- fc_get_qnan(15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
- }
- else {
- assert(0 && "tarval is not floating point");
- return tarval_bad;
- }
-}
-
-tarval *get_tarval_plus_inf(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- if (get_mode_sort(mode) == irms_float_number) {
- switch(get_mode_size_bits(mode))
- {
- case 32:
- fc_get_plusinf(8, 23, NULL);
- break;
- case 64:
- fc_get_plusinf(11, 52, NULL);
- break;
- case 80:
- fc_get_plusinf(15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
- }
- else {
- assert(0 && "tarval is not floating point");
- return tarval_bad;
- }
-}
-
-tarval *get_tarval_minus_inf(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- if (get_mode_sort(mode) == irms_float_number) {
- switch(get_mode_size_bits(mode))
- {
- case 32:
- fc_get_minusinf(8, 23, NULL);
- break;
- case 64:
- fc_get_minusinf(11, 52, NULL);
- break;
- case 80:
- fc_get_minusinf(15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
- }
- else {
- assert(0 && "tarval is not floating point");
- return tarval_bad;
- }
+tarval *get_tarval_one(ir_mode *mode) {
+ assert(mode);
+
+ if (get_mode_n_vector_elems(mode) > 1)
+ panic("vector arithmetic not implemented yet");
+
+ switch (get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ panic("mode %F does not support one value", mode);
+
+ case irms_internal_boolean:
+ return tarval_b_true;
+
+ case irms_float_number:
+ return new_tarval_from_double(1.0, mode);
+
+ case irms_reference:
+ case irms_int_number:
+ return new_tarval_from_long(1l, mode);
+ }
+ return tarval_bad;
+}
+
+tarval *get_tarval_all_one(ir_mode *mode) {
+ assert(mode);
+
+ if (get_mode_n_vector_elems(mode) > 1)
+ panic("vector arithmetic not implemented yet");
+
+ switch (get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ panic("mode %F does not support all-one value", mode);
+
+ case irms_int_number:
+ case irms_internal_boolean:
+ case irms_reference:
+ return tarval_not(get_mode_null(mode));
+
+
+ case irms_float_number:
+ return new_tarval_from_double(1.0, mode);
+ }
+ return tarval_bad;
+}
+
+int tarval_is_constant(tarval *tv) {
+ int num_res = sizeof(reserved_tv) / sizeof(reserved_tv[0]);
+
+ /* reserved tarvals are NOT constants. Note that although
+ tarval_b_true and tarval_b_false are reserved, they are constants of course. */
+ return (tv < &reserved_tv[2] || tv > &reserved_tv[num_res - 1]);
+}
+
+tarval *get_tarval_minus_one(ir_mode *mode) {
+ assert(mode);
+
+ if (get_mode_n_vector_elems(mode) > 1)
+ panic("vector arithmetic not implemented yet");
+
+ switch (get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ case irms_internal_boolean:
+ panic("mode %F does not support minus one value", mode);
+
+ case irms_reference:
+ return tarval_bad;
+
+ case irms_float_number:
+ return mode_is_signed(mode) ? new_tarval_from_double(-1.0, mode) : tarval_bad;
+
+ case irms_int_number:
+ return new_tarval_from_long(-1l, mode);
+ }
+ return tarval_bad;
+}
+
+tarval *get_tarval_nan(ir_mode *mode) {
+ const ieee_descriptor_t *desc;
+
+ assert(mode);
+ if (get_mode_n_vector_elems(mode) > 1)
+ panic("vector arithmetic not implemented yet");
+
+ if (get_mode_sort(mode) == irms_float_number) {
+ desc = get_descriptor(mode);
+ fc_get_qnan(desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+ } else
+ panic("mode %F does not support NaN value", mode);
+}
+
+tarval *get_tarval_plus_inf(ir_mode *mode) {
+ assert(mode);
+ if (get_mode_n_vector_elems(mode) > 1)
+ panic("vector arithmetic not implemented yet");
+
+ if (get_mode_sort(mode) == irms_float_number) {
+ const ieee_descriptor_t *desc = get_descriptor(mode);
+ fc_get_plusinf(desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+ } else
+ panic("mode %F does not support +inf value", mode);
+}
+
+tarval *get_tarval_minus_inf(ir_mode *mode) {
+ assert(mode);
+
+ if (get_mode_n_vector_elems(mode) > 1)
+ panic("vector arithmetic not implemented yet");
+
+ if (get_mode_sort(mode) == irms_float_number) {
+ const ieee_descriptor_t *desc = get_descriptor(mode);
+ fc_get_minusinf(desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+ } else
+ panic("mode %F does not support -inf value", mode);
}
/*
- * Arithmethic operations on tarvals ========================================
+ * Arithmetic operations on tarvals ========================================
*/
/*
* test if negative number, 1 means 'yes'
*/
-int tarval_is_negative(tarval *a)
-{
- ANNOUNCE();
- assert(a);
-
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- assert(0 && "tarval_is_negative is not allowed for vector modes");
- return 0;
- }
-
- switch (get_mode_sort(a->mode))
- {
- case irms_int_number:
- if (!mode_is_signed(a->mode)) return 0;
- else
- return sc_comp(a->value, get_mode_null(a->mode)->value) == -1 ? 1 : 0;
-
- case irms_float_number:
- return fc_comp(a->value, get_mode_null(a->mode)->value) == -1 ? 1 : 0;
-
- default:
- assert(0 && "not implemented");
- return 0;
- }
+int tarval_is_negative(tarval *a) {
+ if (get_mode_n_vector_elems(a->mode) > 1)
+ panic("vector arithmetic not implemented yet");
+
+ switch (get_mode_sort(a->mode)) {
+ case irms_int_number:
+ if (!mode_is_signed(a->mode)) return 0;
+ else
+ return sc_comp(a->value, get_mode_null(a->mode)->value) == -1 ? 1 : 0;
+
+ case irms_float_number:
+ return fc_is_negative(a->value);
+
+ default:
+ panic("mode %F does not support negation value", a->mode);
+ }
}
/*
* test if null, 1 means 'yes'
*/
-int tarval_is_null(tarval *a)
-{
- ir_mode *m = get_tarval_mode(a);
-
- return a == get_tarval_null(m);
+int tarval_is_null(tarval *a) {
+ return
+ a != tarval_bad &&
+ a == get_mode_null(get_tarval_mode(a));
}
/*
* test if one, 1 means 'yes'
*/
-int tarval_is_one(tarval *a)
-{
- ir_mode *m = get_tarval_mode(a);
+int tarval_is_one(tarval *a) {
+ return
+ a != tarval_bad &&
+ a == get_mode_one(get_tarval_mode(a));
+}
- return a == get_tarval_one(m);
+int tarval_is_all_one(tarval *tv) {
+ return
+ tv != tarval_bad &&
+ tv == get_mode_all_one(get_tarval_mode(tv));
+}
+
+/*
+ * test if one, 1 means 'yes'
+ */
+int tarval_is_minus_one(tarval *a) {
+ return
+ a != tarval_bad &&
+ a == get_mode_minus_one(get_tarval_mode(a));
}
/*
* comparison
*/
-pn_Cmp tarval_cmp(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
-
- if (a == tarval_bad || b == tarval_bad) {
- assert(0 && "Comparison with tarval_bad");
- return pn_Cmp_False;
- }
-
- if (a == tarval_undefined || b == tarval_undefined)
- return pn_Cmp_False;
-
- if (a->mode != b->mode)
- return pn_Cmp_False;
-
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- assert(0 && "cmp not implemented for vector modes");
- }
-
- /* Here the two tarvals are unequal and of the same mode */
- switch (get_mode_sort(a->mode))
- {
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- case irms_reference:
- if (a == b)
- return pn_Cmp_Eq;
- return pn_Cmp_False;
-
- case irms_float_number:
- /*
- * BEWARE: we cannot compare a == b here, because
- * a NaN is always Unordered to any other value, even to itself!
- */
- switch (fc_comp(a->value, b->value)) {
- case -1: return pn_Cmp_Lt;
- case 0: return pn_Cmp_Eq;
- case 1: return pn_Cmp_Gt;
- case 2: return pn_Cmp_Uo;
- default: return pn_Cmp_False;
- }
- case irms_int_number:
- case irms_character:
- if (a == b)
- return pn_Cmp_Eq;
- return sc_comp(a->value, b->value) == 1 ? pn_Cmp_Gt : pn_Cmp_Lt;
-
- case irms_internal_boolean:
- if (a == b)
- return pn_Cmp_Eq;
- return a == tarval_b_true ? pn_Cmp_Gt : pn_Cmp_Lt;
- }
- return pn_Cmp_False;
+pn_Cmp tarval_cmp(tarval *a, tarval *b) {
+ carry_flag = -1;
+
+ if (a == tarval_bad || b == tarval_bad) {
+ panic("Comparison with tarval_bad");
+ return pn_Cmp_False;
+ }
+
+ if (a == tarval_undefined || b == tarval_undefined)
+ return pn_Cmp_False;
+
+ if (a->mode != b->mode)
+ return pn_Cmp_False;
+
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ assert(0 && "cmp not implemented for vector modes");
+ }
+
+ /* Here the two tarvals are unequal and of the same mode */
+ switch (get_mode_sort(a->mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ if (a == b)
+ return pn_Cmp_Eq;
+ return pn_Cmp_False;
+
+ case irms_float_number:
+ /* it should be safe to enable this even if other arithmetic is disabled */
+ /*if (no_float)
+ return pn_Cmp_False;*/
+ /*
+ * BEWARE: we cannot compare a == b here, because
+ * a NaN is always Unordered to any other value, even to itself!
+ */
+ switch (fc_comp(a->value, b->value)) {
+ case -1: return pn_Cmp_Lt;
+ case 0: return pn_Cmp_Eq;
+ case 1: return pn_Cmp_Gt;
+ case 2: return pn_Cmp_Uo;
+ default: return pn_Cmp_False;
+ }
+ case irms_reference:
+ case irms_int_number:
+ if (a == b)
+ return pn_Cmp_Eq;
+ return sc_comp(a->value, b->value) == 1 ? pn_Cmp_Gt : pn_Cmp_Lt;
+
+ case irms_internal_boolean:
+ if (a == b)
+ return pn_Cmp_Eq;
+ return a == tarval_b_true ? pn_Cmp_Gt : pn_Cmp_Lt;
+ }
+ return pn_Cmp_False;
}
/*
* convert to other mode
*/
-tarval *tarval_convert_to(tarval *src, ir_mode *m)
-{
- char *buffer;
-
- ANNOUNCE();
- assert(src);
- assert(m);
-
- if (src->mode == m) return src;
-
- if (get_mode_n_vector_elems(src->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- switch (get_mode_sort(src->mode))
- {
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- break;
-
- /* cast float to something */
- case irms_float_number:
- switch (get_mode_sort(m)) {
- case irms_float_number:
- switch (get_mode_size_bits(m))
- {
- case 32:
- fc_cast(src->value, 8, 23, NULL);
- break;
- case 64:
- fc_cast(src->value, 11, 52, NULL);
- break;
- case 80:
- fc_cast(src->value, 15, 64, NULL);
- break;
- default:
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), m);
-
- case irms_int_number:
- switch (GET_FLOAT_TO_INT_MODE())
- {
- case TRUNCATE:
- fc_int(src->value, NULL);
- break;
- case ROUND:
- fc_rnd(src->value, NULL);
- break;
- default:
- assert(0);
- break;
- }
- /* FIXME: floating point unit can't produce a value in integer
- * representation
- * an intermediate representation is needed here first. */
- /* return get_tarval(); */
- return tarval_bad;
-
- default:
- /* the rest can't be converted */
- return tarval_bad;
- }
- break;
-
- /* cast int to something */
- case irms_int_number:
- switch (get_mode_sort(m)) {
- case irms_int_number:
- case irms_character:
- return get_tarval_overflow(src->value, src->length, m);
-
- case irms_internal_boolean:
- /* XXX C semantics */
- if (src == get_mode_null(src->mode)) return tarval_b_false;
- else return tarval_b_true;
-
- case irms_float_number:
- /* XXX floating point unit does not understand internal integer
- * representation, convert to string first, then create float from
- * string */
- buffer = alloca(100);
- /* decimal string representation because hexadecimal output is
- * interpreted unsigned by fc_val_from_str, so this is a HACK */
- snprintf(buffer, 100, "%s",
- sc_print(src->value, get_mode_size_bits(src->mode), SC_DEC));
- switch (get_mode_size_bits(m))
- {
- case 32:
- fc_val_from_str(buffer, 0, 8, 23, NULL);
- break;
- case 64:
- fc_val_from_str(buffer, 0, 11, 52, NULL);
- break;
- case 80:
- fc_val_from_str(buffer, 0, 15, 64, NULL);
- break;
- }
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), m);
-
- default:
- break;
- }
- break;
-
- case irms_internal_boolean:
- switch (get_mode_sort(m))
- {
- case irms_int_number:
- if (src == tarval_b_true) return get_mode_one(m);
- else return get_mode_null(m);
-
- default:
- break;
- }
- break;
-
- case irms_character:
- break;
- case irms_reference:
- break;
- }
-
- return tarval_bad;
+tarval *tarval_convert_to(tarval *src, ir_mode *dst_mode) {
+ char *buffer;
+ fp_value *res;
+ const ieee_descriptor_t *desc;
+
+ carry_flag = -1;
+
+ assert(src);
+ assert(dst_mode);
+
+ if (src->mode == dst_mode)
+ return src;
+
+ if (get_mode_n_vector_elems(src->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ switch (get_mode_sort(src->mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ break;
+
+ /* cast float to something */
+ case irms_float_number:
+ switch (get_mode_sort(dst_mode)) {
+ case irms_float_number:
+ desc = get_descriptor(dst_mode);
+ fc_cast(src->value, desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), dst_mode);
+
+ case irms_int_number:
+ switch (GET_FLOAT_TO_INT_MODE()) {
+ case TRUNCATE:
+ res = fc_int(src->value, NULL);
+ break;
+ case ROUND:
+ res = fc_rnd(src->value, NULL);
+ break;
+ default:
+ panic("Unsupported float to int conversion mode in tarval_convert_to()");
+ break;
+ }
+ buffer = alloca(sc_get_buffer_length());
+ if (! fc_flt2int(res, buffer, dst_mode))
+ return tarval_bad;
+ return get_tarval(buffer, sc_get_buffer_length(), dst_mode);
+
+ default:
+ /* the rest can't be converted */
+ return tarval_bad;
+ }
+ break;
+
+ /* cast int/characters to something */
+ case irms_int_number:
+ switch (get_mode_sort(dst_mode)) {
+
+ case irms_reference:
+ case irms_int_number:
+ buffer = alloca(sc_get_buffer_length());
+ memcpy(buffer, src->value, sc_get_buffer_length());
+ sign_extend(buffer, dst_mode);
+ return get_tarval_overflow(buffer, src->length, dst_mode);
+
+ case irms_internal_boolean:
+ /* XXX C semantics */
+ if (src == get_mode_null(src->mode)) return tarval_b_false;
+ else return tarval_b_true;
+
+ case irms_float_number:
+ /* XXX floating point unit does not understand internal integer
+ * representation, convert to string first, then create float from
+ * string */
+ buffer = alloca(100);
+ /* decimal string representation because hexadecimal output is
+ * interpreted unsigned by fc_val_from_str, so this is a HACK */
+ snprintf(buffer, 100, "%s",
+ sc_print(src->value, get_mode_size_bits(src->mode), SC_DEC, mode_is_signed(src->mode)));
+ buffer[100 - 1] = '\0';
+ desc = get_descriptor(dst_mode);
+ fc_val_from_str(buffer, 0, desc, NULL);
+ return get_tarval(fc_get_buffer(), fc_get_buffer_length(), dst_mode);
+
+ default:
+ break;
+ }
+ break;
+
+ case irms_internal_boolean:
+ /* beware: this is C semantic for the INTERNAL boolean mode */
+ if (get_mode_sort(dst_mode) == irms_int_number)
+ return src == tarval_b_true ? get_mode_one(dst_mode) : get_mode_null(dst_mode);
+ break;
+
+ case irms_reference:
+ if (get_mode_sort(dst_mode) == irms_int_number) {
+ buffer = alloca(sc_get_buffer_length());
+ memcpy(buffer, src->value, sc_get_buffer_length());
+ sign_extend(buffer, src->mode);
+ return get_tarval_overflow(buffer, src->length, dst_mode);
+ }
+ break;
+ }
+
+ return tarval_bad;
}
/*
* bitwise negation
*/
-tarval *tarval_not(tarval *a)
-{
- char *buffer;
-
- ANNOUNCE();
- assert(a);
- assert(mode_is_int(a->mode)); /* bitwise negation is only allowed for integer */
-
- /* works for vector mode without changes */
-
- switch (get_mode_sort(a->mode))
- {
- case irms_int_number:
- buffer = alloca(sc_get_buffer_length());
- sc_not(a->value, buffer);
- return get_tarval(buffer, a->length, a->mode);
-
- default:
- return tarval_bad;
- }
+tarval *tarval_not(tarval *a) {
+ char *buffer;
+
+ carry_flag = -1;
+
+ /* works for vector mode without changes */
+
+ switch (get_mode_sort(a->mode)) {
+ case irms_reference:
+ case irms_int_number:
+ buffer = alloca(sc_get_buffer_length());
+ sc_not(a->value, buffer);
+ return get_tarval(buffer, a->length, a->mode);
+
+ case irms_internal_boolean:
+ if (a == tarval_b_true)
+ return tarval_b_false;
+ if (a == tarval_b_false)
+ return tarval_b_true;
+ return tarval_bad;
+
+ default:
+ assert(0 && "bitwise negation is only allowed for integer and boolean");
+ return tarval_bad;
+ }
}
/*
* arithmetic negation
*/
-tarval *tarval_neg(tarval *a)
-{
- char *buffer;
+tarval *tarval_neg(tarval *a) {
+ char *buffer;
+
+ assert(mode_is_num(a->mode)); /* negation only for numerical values */
- ANNOUNCE();
- assert(a);
- assert(mode_is_num(a->mode)); /* negation only for numerical values */
+ carry_flag = -1;
- /* note: negation is allowed even for unsigned modes. */
+ /* note: negation is allowed even for unsigned modes. */
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- switch (get_mode_sort(a->mode))
- {
- case irms_int_number:
- buffer = alloca(sc_get_buffer_length());
- sc_neg(a->value, buffer);
- return get_tarval_overflow(buffer, a->length, a->mode);
+ switch (get_mode_sort(a->mode)) {
+ case irms_int_number:
+ buffer = alloca(sc_get_buffer_length());
+ sc_neg(a->value, buffer);
+ return get_tarval_overflow(buffer, a->length, a->mode);
- case irms_float_number:
- fc_neg(a->value, NULL);
- return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+ case irms_float_number:
+ /* it should be safe to enable this even if other arithmetic is disabled */
+ /*if (no_float)
+ return tarval_bad;*/
- default:
- return tarval_bad;
- }
+ fc_neg(a->value, NULL);
+ return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+
+ default:
+ return tarval_bad;
+ }
}
/*
* addition
*/
-tarval *tarval_add(tarval *a, tarval *b)
-{
- char *buffer;
-
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(a->mode == b->mode);
-
- if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(b->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- switch (get_mode_sort(a->mode))
- {
- case irms_character:
- case irms_int_number:
- /* modes of a,b are equal, so result has mode of a as this might be the character */
- buffer = alloca(sc_get_buffer_length());
- sc_add(a->value, b->value, buffer);
- return get_tarval_overflow(buffer, a->length, a->mode);
-
- case irms_float_number:
- fc_add(a->value, b->value, NULL);
- return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
-
- default:
- return tarval_bad;
- }
+tarval *tarval_add(tarval *a, tarval *b) {
+ char *buffer;
+
+ carry_flag = -1;
+
+ if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(b->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ if (mode_is_reference(a->mode) && a->mode != b->mode) {
+ b = tarval_convert_to(b, a->mode);
+ } else if (mode_is_reference(b->mode) && b->mode != a->mode) {
+ a = tarval_convert_to(a, b->mode);
+ }
+
+ assert(a->mode == b->mode);
+
+ switch (get_mode_sort(a->mode)) {
+ case irms_reference:
+ case irms_int_number:
+ /* modes of a,b are equal, so result has mode of a as this might be the character */
+ buffer = alloca(sc_get_buffer_length());
+ sc_add(a->value, b->value, buffer);
+ carry_flag = sc_get_bit_at(buffer, get_mode_size_bits(a->mode));
+ return get_tarval_overflow(buffer, a->length, a->mode);
+
+ case irms_float_number:
+ if (no_float)
+ return tarval_bad;
+
+ fc_add(a->value, b->value, NULL);
+ return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+
+ default:
+ return tarval_bad;
+ }
}
/*
* subtraction
*/
-tarval *tarval_sub(tarval *a, tarval *b)
-{
- char *buffer;
-
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(a->mode == b->mode);
-
- if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(b->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
- switch (get_mode_sort(a->mode))
- {
- case irms_character:
- case irms_int_number:
- /* modes of a,b are equal, so result has mode of a as this might be the character */
- buffer = alloca(sc_get_buffer_length());
- sc_sub(a->value, b->value, buffer);
- return get_tarval_overflow(buffer, a->length, a->mode);
-
- case irms_float_number:
- fc_sub(a->value, b->value, NULL);
- return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
-
- default:
- return tarval_bad;
- }
+tarval *tarval_sub(tarval *a, tarval *b, ir_mode *dst_mode) {
+ char *buffer;
+
+ carry_flag = -1;
+
+ if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(b->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ if (dst_mode != NULL) {
+ if (a->mode != dst_mode)
+ a = tarval_convert_to(a, dst_mode);
+ if (b->mode != dst_mode)
+ b = tarval_convert_to(b, dst_mode);
+ }
+ assert(a->mode == b->mode);
+
+ switch (get_mode_sort(a->mode)) {
+ case irms_reference:
+ case irms_int_number:
+ /* modes of a,b are equal, so result has mode of a as this might be the character */
+ buffer = alloca(sc_get_buffer_length());
+ sc_sub(a->value, b->value, buffer);
+ carry_flag = sc_get_bit_at(buffer, get_mode_size_bits(a->mode));
+ return get_tarval_overflow(buffer, a->length, a->mode);
+
+ case irms_float_number:
+ if (no_float)
+ return tarval_bad;
+
+ fc_sub(a->value, b->value, NULL);
+ return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+
+ default:
+ return tarval_bad;
+ }
}
/*
* multiplication
*/
-tarval *tarval_mul(tarval *a, tarval *b)
-{
- char *buffer;
+tarval *tarval_mul(tarval *a, tarval *b) {
+ char *buffer;
+
+ assert(a->mode == b->mode);
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(a->mode == b->mode);
+ carry_flag = -1;
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- switch (get_mode_sort(a->mode))
- {
- case irms_int_number:
- /* modes of a,b are equal */
- buffer = alloca(sc_get_buffer_length());
- sc_mul(a->value, b->value, buffer);
- return get_tarval_overflow(buffer, a->length, a->mode);
+ switch (get_mode_sort(a->mode)) {
+ case irms_int_number:
+ /* modes of a,b are equal */
+ buffer = alloca(sc_get_buffer_length());
+ sc_mul(a->value, b->value, buffer);
+ return get_tarval_overflow(buffer, a->length, a->mode);
- case irms_float_number:
- fc_mul(a->value, b->value, NULL);
- return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+ case irms_float_number:
+ if (no_float)
+ return tarval_bad;
- default:
- return tarval_bad;
- }
+ fc_mul(a->value, b->value, NULL);
+ return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+
+ default:
+ return tarval_bad;
+ }
}
/*
* floating point division
*/
-tarval *tarval_quo(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode) && mode_is_float(a->mode));
+tarval *tarval_quo(tarval *a, tarval *b) {
+ assert((a->mode == b->mode) && mode_is_float(a->mode));
+
+ carry_flag = -1;
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ if (no_float)
+ return tarval_bad;
- fc_div(a->value, b->value, NULL);
- return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ fc_div(a->value, b->value, NULL);
+ return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
}
/*
* integer division
* overflow is impossible, but look out for division by zero
*/
-tarval *tarval_div(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode) && mode_is_int(a->mode));
+tarval *tarval_div(tarval *a, tarval *b) {
+ assert((a->mode == b->mode) && mode_is_int(a->mode));
+
+ carry_flag = -1;
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- /* x/0 error */
- if (b == get_mode_null(b->mode)) return tarval_bad;
- /* modes of a,b are equal */
- sc_div(a->value, b->value, NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ /* x/0 error */
+ if (b == get_mode_null(b->mode)) return tarval_bad;
+ /* modes of a,b are equal */
+ sc_div(a->value, b->value, NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
/*
* remainder
* overflow is impossible, but look out for division by zero
*/
-tarval *tarval_mod(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode) && mode_is_int(a->mode));
+tarval *tarval_mod(tarval *a, tarval *b) {
+ assert((a->mode == b->mode) && mode_is_int(a->mode));
+
+ carry_flag = -1;
+
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ /* x/0 error */
+ if (b == get_mode_null(b->mode)) return tarval_bad;
+ /* modes of a,b are equal */
+ sc_mod(a->value, b->value, NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+}
+
+/*
+ * integer division AND remainder
+ * overflow is impossible, but look out for division by zero
+ */
+tarval *tarval_divmod(tarval *a, tarval *b, tarval **mod) {
+ int len = sc_get_buffer_length();
+ char *div_res = alloca(len);
+ char *mod_res = alloca(len);
+
+ assert((a->mode == b->mode) && mode_is_int(a->mode));
+
+ carry_flag = -1;
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- /* x/0 error */
- if (b == get_mode_null(b->mode)) return tarval_bad;
- /* modes of a,b are equal */
- sc_mod(a->value, b->value, NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+
+ /* x/0 error */
+ if (b == get_mode_null(b->mode)) return tarval_bad;
+ /* modes of a,b are equal */
+ sc_divmod(a->value, b->value, div_res, mod_res);
+ *mod = get_tarval(mod_res, len, a->mode);
+ return get_tarval(div_res, len, a->mode);
}
/*
* absolute value
*/
-tarval *tarval_abs(tarval *a)
-{
- char *buffer;
-
- ANNOUNCE();
- assert(a);
- assert(mode_is_num(a->mode));
-
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
- switch (get_mode_sort(a->mode))
- {
- case irms_int_number:
- if (sc_comp(a->value, get_mode_null(a->mode)->value) == -1)
- {
- buffer = alloca(sc_get_buffer_length());
- sc_neg(a->value, buffer);
- return get_tarval_overflow(buffer, a->length, a->mode);
- }
- return a;
-
- case irms_float_number:
- if (fc_comp(a->value, get_mode_null(a->mode)->value) == -1)
- {
- fc_neg(a->value, NULL);
- return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
- }
- return a;
-
- default:
- return tarval_bad;
- }
- return tarval_bad;
+tarval *tarval_abs(tarval *a) {
+ char *buffer;
+
+ carry_flag = -1;
+ assert(mode_is_num(a->mode));
+
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
+
+ switch (get_mode_sort(a->mode)) {
+ case irms_int_number:
+ if (sc_comp(a->value, get_mode_null(a->mode)->value) == -1) {
+ buffer = alloca(sc_get_buffer_length());
+ sc_neg(a->value, buffer);
+ return get_tarval_overflow(buffer, a->length, a->mode);
+ }
+ return a;
+
+ case irms_float_number:
+ /* it should be safe to enable this even if other arithmetic is disabled */
+ /*if (no_float)
+ return tarval_bad;*/
+
+ if (fc_comp(a->value, get_mode_null(a->mode)->value) == -1) {
+ fc_neg(a->value, NULL);
+ return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+ }
+ return a;
+
+ default:
+ return tarval_bad;
+ }
+ return tarval_bad;
}
/*
* bitwise and
*/
-tarval *tarval_and(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(a->mode == b->mode);
+tarval *tarval_and(tarval *a, tarval *b) {
+ assert(a->mode == b->mode);
- /* works even for vector modes */
+ /* works even for vector modes */
+ carry_flag = 0;
- switch(get_mode_sort(a->mode))
- {
- case irms_internal_boolean:
- return (a == tarval_b_false) ? a : b;
+ switch (get_mode_sort(a->mode)) {
+ case irms_internal_boolean:
+ return (a == tarval_b_false) ? a : b;
- case irms_int_number:
- sc_and(a->value, b->value, NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ case irms_int_number:
+ sc_and(a->value, b->value, NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
- default:
- assert(0 && "operation not defined on mode");
- return tarval_bad;
- }
+ default:
+ assert(0 && "operation not defined on mode");
+ return tarval_bad;
+ }
}
/*
* bitwise or
*/
-tarval *tarval_or (tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(a->mode == b->mode);
+tarval *tarval_or(tarval *a, tarval *b) {
+ assert(a->mode == b->mode);
- /* works even for vector modes */
+ /* works even for vector modes */
+ carry_flag = 0;
- switch (get_mode_sort(a->mode))
- {
- case irms_internal_boolean:
- return (a == tarval_b_true) ? a : b;
+ switch (get_mode_sort(a->mode)) {
+ case irms_internal_boolean:
+ return (a == tarval_b_true) ? a : b;
- case irms_int_number:
- sc_or(a->value, b->value, NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ case irms_int_number:
+ sc_or(a->value, b->value, NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
- default:
- assert(0 && "operation not defined on mode");
- return tarval_bad;;
- }
+ default:
+ assert(0 && "operation not defined on mode");
+ return tarval_bad;
+ }
}
/*
* bitwise exclusive or (xor)
*/
-tarval *tarval_eor(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode));
+tarval *tarval_eor(tarval *a, tarval *b) {
+ assert((a->mode == b->mode));
- /* works even for vector modes */
+ /* works even for vector modes */
+ carry_flag = 0;
- switch (get_mode_sort(a->mode))
- {
- case irms_internal_boolean:
- return (a == b)? tarval_b_false : tarval_b_true;
+ switch (get_mode_sort(a->mode)) {
+ case irms_internal_boolean:
+ return (a == b)? tarval_b_false : tarval_b_true;
- case irms_int_number:
- sc_xor(a->value, b->value, NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ case irms_int_number:
+ sc_xor(a->value, b->value, NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
- default:
- assert(0 && "operation not defined on mode");
- return tarval_bad;;
- }
+ default:
+ assert(0 && "operation not defined on mode");
+ return tarval_bad;;
+ }
}
/*
* bitwise left shift
*/
-tarval *tarval_shl(tarval *a, tarval *b)
-{
- char *temp_val = NULL;
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(mode_is_int(a->mode) && mode_is_int(b->mode));
+tarval *tarval_shl(tarval *a, tarval *b) {
+ char *temp_val = NULL;
+
+ assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ carry_flag = -1;
- if (get_mode_modulo_shift(a->mode) != 0)
- {
- temp_val = alloca(sc_get_buffer_length());
+ if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
- sc_mod(b->value, temp_val, temp_val);
- }
- else
- temp_val = (char*)b->value;
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
- sc_shl(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
+ sc_mod(b->value, temp_val, temp_val);
+ } else
+ temp_val = (char*)b->value;
+
+ sc_shl(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
/*
* bitwise unsigned right shift
*/
-tarval *tarval_shr(tarval *a, tarval *b)
-{
- char *temp_val = NULL;
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(mode_is_int(a->mode) && mode_is_int(b->mode));
+tarval *tarval_shr(tarval *a, tarval *b) {
+ char *temp_val = NULL;
+
+ assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ carry_flag = -1;
- if (get_mode_modulo_shift(a->mode) != 0)
- {
- temp_val = alloca(sc_get_buffer_length());
+ if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
- sc_mod(b->value, temp_val, temp_val);
- }
- else
- temp_val = (char*)b->value;
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
- sc_shr(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
+ sc_mod(b->value, temp_val, temp_val);
+ } else
+ temp_val = (char*)b->value;
+
+ sc_shr(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
/*
* bitwise signed right shift
*/
-tarval *tarval_shrs(tarval *a, tarval *b)
-{
- char *temp_val = NULL;
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(mode_is_int(a->mode) && mode_is_int(b->mode));
+tarval *tarval_shrs(tarval *a, tarval *b) {
+ char *temp_val = NULL;
+
+ assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ carry_flag = -1;
- if (get_mode_modulo_shift(a->mode) != 0)
- {
- temp_val = alloca(sc_get_buffer_length());
+ if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
- sc_mod(b->value, temp_val, temp_val);
- }
- else
- temp_val = (char*)b->value;
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
- sc_shrs(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
+ sc_mod(b->value, temp_val, temp_val);
+ } else
+ temp_val = (char*)b->value;
+
+ sc_shrs(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
/*
- * bitwise rotation
+ * bitwise rotation to left
*/
-tarval *tarval_rot(tarval *a, tarval *b)
-{
- char *temp_val = NULL;
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(mode_is_int(a->mode) && mode_is_int(b->mode));
+tarval *tarval_rotl(tarval *a, tarval *b) {
+ char *temp_val = NULL;
+
+ assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
+ carry_flag = -1;
- if (get_mode_modulo_shift(a->mode) != 0)
- {
- temp_val = alloca(sc_get_buffer_length());
+ if (get_mode_n_vector_elems(a->mode) > 1 || get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
- sc_mod(b->value, temp_val, temp_val);
- }
- else
- temp_val = (char*)b->value;
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
- sc_rot(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ sc_val_from_ulong(get_mode_modulo_shift(a->mode), temp_val);
+ sc_mod(b->value, temp_val, temp_val);
+ } else
+ temp_val = (char*)b->value;
+
+ sc_rotl(a->value, temp_val, get_mode_size_bits(a->mode), mode_is_signed(a->mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
/*
* carry flag of the last operation
*/
-int tarval_carry(void)
-{
- return sc_had_carry();
+int tarval_carry(void) {
+ if (carry_flag == -1)
+ panic("Carry undefined for the last operation");
+ return carry_flag;
}
/*
* Output of tarvals
*/
-int tarval_snprintf(char *buf, size_t len, tarval *tv)
-{
- static const tarval_mode_info default_info = { TVO_NATIVE, NULL, NULL };
-
- const char *str;
- char tv_buf[100];
- const tarval_mode_info *mode_info;
- const char *prefix, *suffix;
-
- ANNOUNCE();
-
- mode_info = tv->mode->tv_priv;
- if (! mode_info)
- mode_info = &default_info;
- prefix = mode_info->mode_prefix ? mode_info->mode_prefix : "";
- suffix = mode_info->mode_suffix ? mode_info->mode_suffix : "";
-
- switch (get_mode_sort(tv->mode))
- {
- case irms_int_number:
- case irms_character:
- switch (mode_info->mode_output) {
-
- case TVO_DECIMAL:
- str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_DEC);
- break;
-
- case TVO_OCTAL:
- str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_OCT);
- break;
-
- case TVO_HEX:
- case TVO_NATIVE:
- default:
- str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_HEX);
- break;
- }
- return snprintf(buf, len, "%s%s%s", prefix, str, suffix);
-
- case irms_float_number:
- switch (mode_info->mode_output) {
- case TVO_HEX:
- return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_PACKED), suffix);
-
- case TVO_HEXFLOAT:
- return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_HEX), suffix);
-
- case TVO_FLOAT:
- case TVO_NATIVE:
- default:
- return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_DEC), suffix);
- }
- break;
-
- case irms_reference:
- if (tv == tarval_P_void) return snprintf(buf, len, "NULL");
- if (tv->value != NULL){
- if (len > tv->length) {
- memcpy(buf, tv->value, tv->length);
- buf[tv->length] = '\0';
- }
- else {
- /* truncated */
- memcpy(buf, tv->value, len-1);
- buf[len-1] = '\0';
- }
- return tv->length;
- }
- else
- return snprintf(buf, len, "void");
-
- case irms_internal_boolean:
- switch (mode_info->mode_output) {
-
- case TVO_DECIMAL:
- case TVO_OCTAL:
- case TVO_HEX:
- case TVO_BINARY:
- return snprintf(buf, len, "%s%c%s", prefix, (tv == tarval_b_true) ? '1' : '0', suffix);
-
- case TVO_NATIVE:
- default:
- return snprintf(buf, len, "%s%s%s", prefix, (tv == tarval_b_true) ? "true" : "false", suffix);
- }
-
- case irms_control_flow:
- case irms_memory:
- case irms_auxiliary:
- return snprintf(buf, len, "<TV_OVERFLOW_BAD>");
- }
-
- return 0;
+int tarval_snprintf(char *buf, size_t len, tarval *tv) {
+ static const tarval_mode_info default_info = { TVO_NATIVE, NULL, NULL };
+
+ const char *str;
+ char tv_buf[100];
+ const tarval_mode_info *mode_info;
+ const char *prefix, *suffix;
+
+ mode_info = tv->mode->tv_priv;
+ if (! mode_info)
+ mode_info = &default_info;
+ prefix = mode_info->mode_prefix ? mode_info->mode_prefix : "";
+ suffix = mode_info->mode_suffix ? mode_info->mode_suffix : "";
+
+ switch (get_mode_sort(tv->mode)) {
+ case irms_reference:
+ if (tv == tv->mode->null) return snprintf(buf, len, "NULL");
+ /* FALLTHROUGH */
+ case irms_int_number:
+ switch (mode_info->mode_output) {
+
+ case TVO_DECIMAL:
+ str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_DEC, mode_is_signed(tv->mode));
+ break;
+
+ case TVO_OCTAL:
+ str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_OCT, 0);
+ break;
+
+ case TVO_NATIVE:
+ prefix = "0x";
+ case TVO_HEX:
+ default:
+ str = sc_print(tv->value, get_mode_size_bits(tv->mode), SC_HEX, 0);
+ break;
+ }
+ return snprintf(buf, len, "%s%s%s", prefix, str, suffix);
+
+ case irms_float_number:
+ switch (mode_info->mode_output) {
+ case TVO_HEX:
+ return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_PACKED), suffix);
+
+ case TVO_HEXFLOAT:
+ return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_HEX), suffix);
+
+ case TVO_FLOAT:
+ case TVO_NATIVE:
+ default:
+ return snprintf(buf, len, "%s%s%s", prefix, fc_print(tv->value, tv_buf, sizeof(tv_buf), FC_DEC), suffix);
+ }
+ break;
+
+ case irms_internal_boolean:
+ switch (mode_info->mode_output) {
+
+ case TVO_DECIMAL:
+ case TVO_OCTAL:
+ case TVO_HEX:
+ case TVO_BINARY:
+ return snprintf(buf, len, "%s%c%s", prefix, (tv == tarval_b_true) ? '1' : '0', suffix);
+
+ case TVO_NATIVE:
+ default:
+ return snprintf(buf, len, "%s%s%s", prefix, (tv == tarval_b_true) ? "true" : "false", suffix);
+ }
+
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ if (tv == tarval_bad)
+ return snprintf(buf, len, "<TV_BAD>");
+ if (tv == tarval_undefined)
+ return snprintf(buf, len, "<TV_UNDEF>");
+ if (tv == tarval_unreachable)
+ return snprintf(buf, len, "<TV_UNREACHABLE>");
+ if (tv == tarval_reachable)
+ return snprintf(buf, len, "<TV_REACHABLE>");
+ return snprintf(buf, len, "<TV_??""?>");
+ }
+
+ return 0;
}
-
/**
* Output of tarvals to stdio.
*/
int tarval_printf(tarval *tv) {
- char buf[1024];
- int res;
+ char buf[1024];
+ int res;
- res = tarval_snprintf(buf, sizeof(buf), tv);
- assert(res < sizeof(buf) && "buffer to small for tarval_snprintf");
- printf(buf);
- return res;
+ res = tarval_snprintf(buf, sizeof(buf), tv);
+ assert(res < (int) sizeof(buf) && "buffer to small for tarval_snprintf");
+ printf("%s", buf);
+ return res;
}
+char *get_tarval_bitpattern(tarval *tv) {
+ int i, j, pos = 0;
+ int n = get_mode_size_bits(tv->mode);
+ int bytes = (n + 7) / 8;
+ char *res = XMALLOCN(char, n + 1);
+ unsigned char byte;
-char *get_tarval_bitpattern(tarval *tv)
-{
- int i, j, pos = 0;
- int n = get_mode_size_bits(tv->mode);
- int bytes = (n + 7) / 8;
- char *res = malloc((n + 1) * sizeof(char));
- unsigned char byte;
-
- for(i = 0; i < bytes; i++) {
- byte = get_tarval_sub_bits(tv, i);
- for(j = 1; j < 256; j <<= 1)
- if(pos < n)
- res[pos++] = j & byte ? '1' : '0';
- }
+ for(i = 0; i < bytes; i++) {
+ byte = get_tarval_sub_bits(tv, i);
+ for(j = 1; j < 256; j <<= 1)
+ if(pos < n)
+ res[pos++] = j & byte ? '1' : '0';
+ }
- res[n] = '\0';
+ res[n] = '\0';
- return res;
+ return res;
}
/*
* access to the bitpattern
*/
-unsigned char get_tarval_sub_bits(tarval *tv, unsigned byte_ofs)
-{
- switch (get_mode_sort(tv->mode)) {
- case irms_int_number:
- case irms_character:
- return sc_sub_bits(tv->value, tv->length, byte_ofs);
-
- case irms_float_number:
- return fc_sub_bits(tv->value, get_mode_size_bits(tv->mode), byte_ofs);
-
- default:
- return 0;
- }
+unsigned char get_tarval_sub_bits(tarval *tv, unsigned byte_ofs) {
+ switch (get_mode_arithmetic(tv->mode)) {
+ case irma_twos_complement:
+ return sc_sub_bits(tv->value, get_mode_size_bits(tv->mode), byte_ofs);
+ case irma_ieee754:
+ return fc_sub_bits(tv->value, get_mode_size_bits(tv->mode), byte_ofs);
+ default:
+ panic("get_tarval_sub_bits(): arithmetic mode not supported");
+ }
}
/*
*
* Returns zero on success.
*/
-int set_tarval_mode_output_option(ir_mode *mode, const tarval_mode_info *modeinfo)
-{
- assert(mode);
+int set_tarval_mode_output_option(ir_mode *mode, const tarval_mode_info *modeinfo) {
+ assert(mode);
- mode->tv_priv = modeinfo;
- return 0;
+ mode->tv_priv = modeinfo;
+ return 0;
}
/*
*
* This functions returns the mode info of a given mode.
*/
-const tarval_mode_info *get_tarval_mode_output_option(ir_mode *mode)
-{
- assert(mode);
+const tarval_mode_info *get_tarval_mode_output_option(ir_mode *mode) {
+ assert(mode);
- return mode->tv_priv;
+ return mode->tv_priv;
}
/*
- * Identifying tarvals values for algebraic simplifications.
- *
- * Returns:
- * - TV_CLASSIFY_NULL for additive neutral,
- * - TV_CLASSIFY_ONE for multiplicative neutral,
- * - TV_CLASSIFY_ALL_ONE for bitwise-and neutral
- * - TV_CLASSIFY_OTHER else
+ * Returns non-zero if a given (integer) tarval has only one single bit
+ * set.
*/
-tarval_classification_t classify_tarval(tarval *tv)
-{
- ANNOUNCE();
- if (!tv || tv == tarval_bad) return TV_CLASSIFY_OTHER;
+int tarval_is_single_bit(tarval *tv) {
+ int i, l;
+ int bits;
+
+ if (!tv || tv == tarval_bad) return 0;
+ if (! mode_is_int(tv->mode)) return 0;
+
+ l = get_mode_size_bytes(tv->mode);
+ for (bits = 0, i = l - 1; i >= 0; --i) {
+ unsigned char v = get_tarval_sub_bits(tv, (unsigned)i);
+
+ /* check for more than one bit in these */
+ if (v) {
+ if (v & (v-1))
+ return 0;
+ if (++bits > 1)
+ return 0;
+ }
+ }
+ return bits;
+}
- if (tv == get_mode_null(tv->mode))
- return TV_CLASSIFY_NULL;
- else if (tv == get_mode_one(tv->mode))
- return TV_CLASSIFY_ONE;
- else if ((get_mode_sort(tv->mode) == irms_int_number)
- && (tv == new_tarval_from_long(-1, tv->mode)))
- return TV_CLASSIFY_ALL_ONE;
+/*
+ * Returns non-zero if the mantissa of a floating point IEEE-754
+ * tarval is zero (i.e. 1.0Exxx)
+ */
+int tarval_ieee754_zero_mantissa(tarval *tv) {
+ assert(get_mode_arithmetic(tv->mode) == irma_ieee754);
+ return fc_zero_mantissa(tv->value);
+}
- return TV_CLASSIFY_OTHER;
+/* Returns the exponent of a floating point IEEE-754 tarval. */
+int tarval_ieee754_get_exponent(tarval *tv) {
+ assert(get_mode_arithmetic(tv->mode) == irma_ieee754);
+ return fc_get_exponent(tv->value);
}
-/**
+/*
+ * Check if the tarval can be converted to the given mode without
+ * precision loss.
+ */
+int tarval_ieee754_can_conv_lossless(tarval *tv, ir_mode *mode) {
+ const ieee_descriptor_t *desc = get_descriptor(mode);
+ return fc_can_lossless_conv_to(tv->value, desc);
+}
+
+/* Set the immediate precision for IEEE-754 results. */
+unsigned tarval_ieee754_set_immediate_precision(unsigned bits) {
+ return fc_set_immediate_precision(bits);
+}
+
+/* Returns non-zero if the result of the last IEEE-754 operation was exact. */
+unsigned tarval_ieee754_get_exact(void) {
+ return fc_is_exact();
+}
+
+/* Return the size of the mantissa in bits (including possible
+ implicit bits) for the given mode. */
+unsigned tarval_ieee754_get_mantissa_size(const ir_mode *mode) {
+ const ieee_descriptor_t *desc;
+
+ assert(get_mode_arithmetic(mode) == irma_ieee754);
+ desc = get_descriptor(mode);
+
+ return desc->mantissa_size + desc->explicit_one;
+}
+
+/* check if its the a floating point NaN */
+int tarval_is_NaN(tarval *tv) {
+ if (! mode_is_float(tv->mode))
+ return 0;
+ return fc_is_nan(tv->value);
+}
+
+/* check if its the a floating point +inf */
+int tarval_is_plus_inf(tarval *tv) {
+ if (! mode_is_float(tv->mode))
+ return 0;
+ return fc_is_inf(tv->value) && !fc_is_negative(tv->value);
+}
+
+/* check if its the a floating point -inf */
+int tarval_is_minus_inf(tarval *tv) {
+ if (! mode_is_float(tv->mode))
+ return 0;
+ return fc_is_inf(tv->value) && fc_is_negative(tv->value);
+}
+
+/* check if the tarval represents a finite value */
+int tarval_is_finite(tarval *tv) {
+ if (mode_is_float(tv->mode))
+ return !fc_is_nan(tv->value) && !fc_is_inf(tv->value);
+ return 1;
+}
+
+/*
* Sets the overflow mode for integer operations.
*/
void tarval_set_integer_overflow_mode(tarval_int_overflow_mode_t ov_mode) {
- int_overflow_mode = ov_mode;
+ int_overflow_mode = ov_mode;
}
-/**
- * Get the overflow mode for integer operations.
- */
+/* Get the overflow mode for integer operations. */
tarval_int_overflow_mode_t tarval_get_integer_overflow_mode(void) {
- return int_overflow_mode;
+ return int_overflow_mode;
+}
+
+/* Enable/Disable floating point constant folding. */
+void tarval_enable_fp_ops(int enable) {
+ no_float = !enable;
+}
+
+int tarval_fp_ops_enabled(void) {
+ return !no_float;
}
/**
* default mode_info for output as HEX
*/
static const tarval_mode_info hex_output = {
- TVO_HEX,
- "0x",
- NULL,
+ TVO_HEX,
+ "0x",
+ NULL,
};
-/**
- * default mode_info for output as reference
- */
-static const tarval_mode_info reference_output = {
- TVO_NATIVE,
- "&(",
- ")",
-};
-
-
/*
* Initialization of the tarval module: called before init_mode()
*/
-void init_tarval_1(void)
-{
- ANNOUNCE();
- /* initialize the sets holding the tarvals with a comparison function and
- * an initial size, which is the expected number of constants */
- tarvals = new_set(memcmp, N_CONSTANTS);
- values = new_set(memcmp, N_CONSTANTS);
- /* init strcalc with precision of 68 to support floating point values with 64
- * bit mantissa (needs extra bits for rounding and overflow) */
- init_strcalc(68);
- init_fltcalc(0);
+void init_tarval_1(long null_value, int support_quad_precision) {
+ /* if these assertion fail, tarval_is_constant() will follow ... */
+ assert(tarval_b_false == &reserved_tv[0] && "b_false MUST be the first reserved tarval!");
+ assert(tarval_b_true == &reserved_tv[1] && "b_true MUST be the second reserved tarval!");
+
+ _null_value = null_value;
+
+ /* initialize the sets holding the tarvals with a comparison function and
+ * an initial size, which is the expected number of constants */
+ tarvals = new_set(cmp_tv, N_CONSTANTS);
+ values = new_set(memcmp, N_CONSTANTS);
+ /* calls init_strcalc() with needed size */
+ init_fltcalc(support_quad_precision ? 112 : 64);
}
/*
* Initialization of the tarval module: called after init_mode()
*/
-void init_tarval_2(void)
-{
- ANNOUNCE();
-
- tarval_bad->mode = mode_BAD;
- tarval_undefined->mode = mode_ANY;
- tarval_b_true->mode = mode_b;
- tarval_b_false->mode = mode_b;
- tarval_P_void->mode = mode_P;
-
- /*
- * assign output modes that are compatible with the
- * old implementation: Hex output
- */
- set_tarval_mode_output_option(mode_U, &hex_output);
- set_tarval_mode_output_option(mode_C, &hex_output);
- set_tarval_mode_output_option(mode_Bs, &hex_output);
- set_tarval_mode_output_option(mode_Bu, &hex_output);
- set_tarval_mode_output_option(mode_Hs, &hex_output);
- set_tarval_mode_output_option(mode_Hu, &hex_output);
- set_tarval_mode_output_option(mode_Is, &hex_output);
- set_tarval_mode_output_option(mode_Iu, &hex_output);
- set_tarval_mode_output_option(mode_Ls, &hex_output);
- set_tarval_mode_output_option(mode_Lu, &hex_output);
- set_tarval_mode_output_option(mode_P, &reference_output);
+void init_tarval_2(void) {
+ tarval_bad->kind = k_tarval;
+ tarval_bad->mode = mode_BAD;
+ tarval_bad->value = INT_TO_PTR(resid_tarval_bad);
+
+ tarval_undefined->kind = k_tarval;
+ tarval_undefined->mode = mode_ANY;
+ tarval_undefined->value = INT_TO_PTR(resid_tarval_undefined);
+
+ tarval_b_true->kind = k_tarval;
+ tarval_b_true->mode = mode_b;
+ tarval_b_true->value = INT_TO_PTR(resid_tarval_b_true);
+
+ tarval_b_false->kind = k_tarval;
+ tarval_b_false->mode = mode_b;
+ tarval_b_false->value = INT_TO_PTR(resid_tarval_b_false);
+
+ tarval_unreachable->kind = k_tarval;
+ tarval_unreachable->mode = mode_X;
+ tarval_unreachable->value = INT_TO_PTR(resid_tarval_unreachable);
+
+ tarval_reachable->kind = k_tarval;
+ tarval_reachable->mode = mode_X;
+ tarval_reachable->value = INT_TO_PTR(resid_tarval_reachable);
+
+ /*
+ * assign output modes that are compatible with the
+ * old implementation: Hex output
+ */
+ set_tarval_mode_output_option(mode_Bs, &hex_output);
+ set_tarval_mode_output_option(mode_Bu, &hex_output);
+ set_tarval_mode_output_option(mode_Hs, &hex_output);
+ set_tarval_mode_output_option(mode_Hu, &hex_output);
+ set_tarval_mode_output_option(mode_Is, &hex_output);
+ set_tarval_mode_output_option(mode_Iu, &hex_output);
+ set_tarval_mode_output_option(mode_Ls, &hex_output);
+ set_tarval_mode_output_option(mode_Lu, &hex_output);
+ set_tarval_mode_output_option(mode_P, &hex_output);
}
/* free all memory occupied by tarval. */
void finish_tarval(void) {
- finish_strcalc ();
- finish_fltcalc ();
- del_set(tarvals); tarvals = NULL;
- del_set(values); values = NULL;
+ finish_strcalc();
+ finish_fltcalc();
+ del_set(tarvals); tarvals = NULL;
+ del_set(values); values = NULL;
+}
+
+int (is_tarval)(const void *thing) {
+ return _is_tarval(thing);
}
/****************************************************************************
projects / libfirm / blobdiff