-/* TV --- Target Values, aka Constant Table.
- Copyright (C) 1995, 1996 Christian von Roques */
-
-/* $Id$ */
-
-/****i* tv/implementation
+/*
+ * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
*
- * AUTHORS
- * Christian von Roques
- * Matthias Heil
+ * This file is part of libFirm.
*
- * NOTES
- * Internal storage for tarvals, 1st draft:
- * Integers as well as pointers are stored in a hex formatted string holding
- * 16 characters. Booleans are not stored as there are only two of them.
+ * 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.
*
- * Floats are just reinterpreted as byte strings, because I am not sure if
- * there is loss if I convert float to long double and back and furthermore
- * the implementation of a fully ieee compatible floating point emulation
- * is not sensible for now
- * With this information it is easy to decide the kind of stored value:
- * Integers have size 16, floats 4, doubles 8, long doubles 12.
- ******/
-
-/* This implementation assumes:
- * both host and target have IEEE-754 floating-point arithmetic. */
-
-/* !!! float and double divides MUST NOT SIGNAL !!! */
-/* @@@ query the floating-point expception status flags */
-
-/* @@@ Problem: All Values are stored twice, once as Univ_*s and a 2nd
- time in their real target mode. :-( */
-
-#define MAX_INT_LENGTH 8
-#define CHAR_BUFFER_SIZE ((MAX_INT_LENGTH) * 2)
+ * Licensees holding valid libFirm Professional Edition licenses may use
+ * this file in accordance with the libFirm Commercial License.
+ * Agreement provided with the Software.
+ *
+ * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+ * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+/**
+ * @file
+ * @brief Representation of and static computations on target machine
+ * values.
+ * @date 2003
+ * @author Mathias Heil
+ * @version $Id$
+ * @summary
+ *
+ * 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.
+ */
#ifdef HAVE_CONFIG_H
-# include <config.h>
+# include "config.h"
#endif
#include <assert.h> /* assertions */
#include <stdlib.h> /* atoi() */
-#include <string.h> /* nice things for strings */
+#ifdef HAVE_STRING_H
+# include <string.h> /* nice things for strings */
+#endif
+#ifdef HAVE_STRINGS_H
+#include <strings.h> /* strings.h also includes bsd only function strcasecmp */
+#endif
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
-#include <malloc.h>
#include "tv_t.h"
#include "set.h" /* to store tarvals in */
-#include "tune.h" /* some constants */
#include "entity_t.h" /* needed to store pointers to entities */
-#include "irmode.h" /* defines modes etc */
#include "irmode_t.h"
-#include "irnode.h" /* defines boolean return values */
-#include "xprintf.h"
-#include "xp_help.h"
-#include "host.h"
+#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 */
+#define N_CONSTANTS 2048
+
+/* get the integer overflow mode */
+#define GET_OVERFLOW_MODE() int_overflow_mode
+
+/* unused, float to int doesn't work yet */
+enum float_to_int_mode {
+ TRUNCATE,
+ ROUND
+};
+
+#define GET_FLOAT_TO_INT_MODE() TRUNCATE
+
+#define SWITCH_NOINFINITY 0
+#define SWITCH_NODENORMALS 0
/****************************************************************************
* local definitions and macros
#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 */
+static struct set *tarvals = NULL; /* container for tarval structs */
+static struct set *values = NULL; /* container for values */
+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;
/****************************************************************************
* 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)
+ 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);
}
+#ifdef __GNUC__
+INLINE static void tarval_verify(tarval *tv) __attribute__ ((unused));
+#endif
-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);
+ if (!FIND_TARVAL(tv)) fail_verify(tv);
+ if (tv->length > 0 && !FIND_VALUE(tv->value, tv->length)) fail_verify(tv);
- return;
+ return;
}
#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);
+/** 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 */
+ 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);
}
/**
- * Returns non-zero if a tarval overflows.
- *
- * @todo Implementation did not work on all modes
+ * handle overflow
*/
-static int overflows(tarval *tv)
+static tarval *get_tarval_overflow(const void *value, int length, ir_mode *mode)
{
- switch (get_mode_sort(tv->mode))
- {
- case irms_character:
- case irms_int_number:
- if (sc_comp(tv->value, get_mode_max(tv->mode)->value) == 1) return 1;
- if (sc_comp(tv->value, get_mode_min(tv->mode)->value) == -1) return 1;
- break;
-
- case irms_float_number:
- if (fc_comp(tv->value, get_mode_max(tv->mode)->value) == 1) return 1;
- if (fc_comp(tv->value, get_mode_min(tv->mode)->value) == -1) return 1;
- break;
-
- default:
- break;
- }
-
- return 0;
+ 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());
+ sc_val_from_ulong(-1, temp);
+ sc_and(temp, value, 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());
+ sc_val_from_ulong(-1, temp);
+ sc_and(temp, value, 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);
}
/*
* public variables declared in tv.h
*/
-tarval *tarval_bad;
-tarval *tarval_undefined;
-tarval *tarval_b_false;
-tarval *tarval_b_true;
-tarval *tarval_P_void;
+static tarval reserved_tv[4];
+
+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];
/*
* 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_auxiliary:
- assert(0);
- break;
-
- case irms_internal_boolean:
- /* match tTrRuUeE/fFaAlLsSeE */
- if (strcasecmp(str, "true")) return tarval_b_true;
- else if (strcasecmp(str, "false")) return tarval_b_true;
- else
- return atoi(str) ? tarval_b_true : tarval_b_false;
-
- case irms_float_number:
- fc_val_from_str(str, len);
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
-
- case irms_int_number:
- case irms_character:
- sc_val_from_str(str, len);
- 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;
-}
-
-#if 0
-int tarval_is_str(tarval *tv)
-{
- ANNOUNCE();
- assert(tv);
+ 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_reference:
+ /* same as integer modes */
+ case irms_int_number:
+ sc_val_from_str(str, len, NULL, mode);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+ }
- return ((get_mode_sort(tv->mode) == reference) && (tv->value != NULL) && (tv->length > 0));
-}
-char *tarval_to_str(tarval *tv)
-{
- ANNOUNCE();
- assert(tarval_is_str(tv));
- return (char *)tv->value;
+ assert(0); /* can't be reached, can it? */
+ return NULL;
}
-#endif
/*
- * helper function, creta a tarval from long
+ * helper function, create a tarval from long
*/
-tarval *new_tarval_from_long(long l, ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode && !(get_mode_sort(mode) == irms_auxiliary));
+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 ;
+ 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);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+ 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);
+ 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);
- }
- return NULL;
+ default:
+ assert(0 && "unsupported mode sort");
+ }
+ return NULL;
}
/* returns non-zero if can be converted to long */
-int tarval_is_long(tarval *tv)
-{
- ANNOUNCE();
- return ((get_mode_sort(tv->mode) == irms_int_number) || (get_mode_sort(tv->mode) == irms_character));
+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 tarval_to_long(tarval* tv)
-{
- ANNOUNCE();
- assert(tv && get_mode_sort(tv->mode) == irms_int_number);
+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); /* might overflow */
+ 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));
-
- fc_val_from_float(d);
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+tarval *new_tarval_from_double(long double d, ir_mode *mode) {
+ assert(mode && (get_mode_sort(mode) == irms_float_number));
+
+ switch (get_mode_size_bits(mode)) {
+ case 32:
+ fc_val_from_ieee754(d, 8, 23, NULL);
+ break;
+ case 64:
+ fc_val_from_ieee754(d, 11, 52, NULL);
+ break;
+ case 80:
+ fc_val_from_ieee754(d, 15, 64, NULL);
+ break;
+ }
+ 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);
-
- return (get_mode_sort(tv->mode) == irms_float_number);
-}
-
-long double tarval_to_double(tarval *tv)
-{
- ANNOUNCE();
- assert(tarval_is_double(tv));
+int tarval_is_double(tarval *tv) {
+ assert(tv);
- return fc_val_to_float(tv->value);
+ return (get_mode_sort(tv->mode) == irms_float_number);
}
-/* The tarval represents the address of the entity. As the address must
- be constant the entity must have as owner the global type. */
-tarval *new_tarval_from_entity (entity *ent, ir_mode *mode)
-{
- ANNOUNCE();
- assert(ent);
- assert(mode && (get_mode_sort(mode) == irms_reference));
+long double get_tarval_double(tarval *tv) {
+ assert(tarval_is_double(tv));
- return get_tarval((void *)ent, 0, mode);
+ return fc_val_to_ieee754(tv->value);
}
-int tarval_is_entity(tarval *tv)
-{
- ANNOUNCE();
- assert(tv);
- /* tv->value == NULL means dereferencing a null pointer */
- return ((get_mode_sort(tv->mode) == irms_reference) && (tv->value != NULL) && (tv->length == 0));
-}
-
-entity *tarval_to_entity(tarval *tv)
-{
- ANNOUNCE();
- assert(tv);
- if (tarval_is_entity(tv))
- return (entity *)tv->value;
- else {
- assert(0 && "tarval did not represent an entity");
- return NULL;
- }
-}
-
-void free_tarval_entity(entity *ent) {
- /* There can be a tarval referencing this entity. Even if the
- tarval is not used by the code any more, it can still reference
- the entity as tarvals live indepently of the entity referenced.
- Further the tarval is hashed into a set. If a hash function
- evaluation happens to collide with this tarval, we will vrfy that
- it contains a proper entity and we will crash if the entity is
- freed.
-
- Unluckily, tarvals can neither be changed nor deleted, and to find
- one, all existing reference modes have to be tried -> a facility
- to retrieve all modes of a kind is needed. */
- ANNOUNCE();
-}
/*
* Access routines for tarval fields ========================================
*/
-ir_mode *get_tarval_mode (tarval *tv) /* get the mode of the tarval */
-{
- ANNOUNCE();
- assert(tv);
- return tv->mode;
+
+/* get the mode of the tarval */
+ir_mode *(get_tarval_mode)(const tarval *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)
-{
- ANNOUNCE();
- return tarval_bad;
-}
-tarval *get_tarval_undefined(void)
-{
- ANNOUNCE();
- return tarval_undefined;
+tarval *(get_tarval_bad)(void) {
+ return _get_tarval_bad();
}
-tarval *get_tarval_b_false(void)
-{
- ANNOUNCE();
- return tarval_b_false;
+
+tarval *(get_tarval_undefined)(void) {
+ return _get_tarval_undefined();
}
-tarval *get_tarval_b_true(void)
-{
- ANNOUNCE();
- return tarval_b_true;
+
+tarval *(get_tarval_b_false)(void) {
+ return _get_tarval_b_false();
}
-tarval *get_tarval_P_void(void)
-{
- ANNOUNCE();
- return tarval_P_void;
+
+tarval *(get_tarval_b_true)(void) {
+ return _get_tarval_b_true();
}
-tarval *get_tarval_max(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
+tarval *get_tarval_max(ir_mode *mode) {
+ 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_auxiliary:
- assert(0);
- break;
+ 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:
+ 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;
+}
- case irms_internal_boolean:
- return tarval_b_true;
+tarval *get_tarval_min(ir_mode *mode) {
+ assert(mode);
- case irms_float_number:
- fc_get_max(get_mode_size_bits(mode));
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+ if (get_mode_n_vector_elems(mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- case irms_int_number:
- case irms_character:
- sc_max_from_bits(get_mode_size_bits(mode), mode_is_signed(mode));
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
- }
- 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:
+ 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_min(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
+/** The bit pattern for the pointer NULL */
+static long _null_value;
- switch(get_mode_sort(mode))
- {
- case irms_reference:
- case irms_auxiliary:
- assert(0);
- break;
+tarval *get_tarval_null(ir_mode *mode) {
+ assert(mode);
- case irms_internal_boolean:
- return tarval_b_false;
+ if (get_mode_n_vector_elems(mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- case irms_float_number:
- fc_get_min(get_mode_size_bits(mode));
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
+ switch(get_mode_sort(mode)) {
+ case irms_control_flow:
+ case irms_memory:
+ case irms_auxiliary:
+ case irms_internal_boolean:
+ assert(0);
+ break;
- case irms_int_number:
- case irms_character:
- sc_min_from_bits(get_mode_size_bits(mode), mode_is_signed(mode));
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
- }
- return tarval_bad;
-}
+ case irms_float_number:
+ return new_tarval_from_double(0.0, mode);
-tarval *get_tarval_null(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
+ case irms_int_number:
+ return new_tarval_from_long(0l, mode);
- switch(get_mode_sort(mode))
- {
- case irms_auxiliary:
- case irms_internal_boolean:
- assert(0);
- break;
+ case irms_reference:
+ return new_tarval_from_long(_null_value, mode);
+ }
+ return tarval_bad;
+}
- case irms_float_number:
- return new_tarval_from_double(0.0, mode);
+tarval *get_tarval_one(ir_mode *mode) {
+ assert(mode);
- case irms_int_number:
- case irms_character:
- return new_tarval_from_long(0l, mode);
+ if (get_mode_n_vector_elems(mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- case irms_reference:
- return tarval_P_void;
- }
- 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:
+ return new_tarval_from_long(1l, mode);
+ break;
+ }
+ return tarval_bad;
}
-tarval *get_tarval_one(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
+tarval *get_tarval_minus_one(ir_mode *mode) {
+ assert(mode);
- switch(get_mode_sort(mode))
- {
- case irms_auxiliary:
- case irms_internal_boolean:
- case irms_reference:
- 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(1.0, mode);
+ 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_int_number:
- case irms_character:
- return new_tarval_from_long(1l, mode);
- break;
- }
- 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 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);
+tarval *get_tarval_nan(ir_mode *mode) {
+ assert(mode);
- if (get_mode_sort(mode) == irms_float_number) {
- fc_get_nan();
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
- }
- else {
- assert(0 && "tarval is not floating point");
- return tarval_bad;
- }
+ 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_inf(ir_mode *mode)
-{
- ANNOUNCE();
- assert(mode);
+tarval *get_tarval_plus_inf(ir_mode *mode) {
+ 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) {
- fc_get_inf();
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
- }
- else {
- assert(0 && "tarval is not floating point");
- 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) {
+ 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;
+ }
}
/*
/*
* test if negative number, 1 means 'yes'
*/
-int tarval_is_negative(tarval *a)
-{
- ANNOUNCE();
- assert(a);
+int tarval_is_negative(tarval *a) {
+ assert(a);
- 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;
+ 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;
+ 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;
- }
+ default:
+ assert(0 && "not implemented");
+ return 0;
+ }
}
/*
- * comparison
+ * test if null, 1 means 'yes'
*/
-pnc_number tarval_cmp(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
+int tarval_is_null(tarval *a) {
+ ir_mode *m = get_tarval_mode(a);
+
+ return a == get_tarval_null(m);
+}
+
+/*
+ * test if one, 1 means 'yes'
+ */
+int tarval_is_one(tarval *a) {
+ ir_mode *m = get_tarval_mode(a);
+
+ return a == get_tarval_one(m);
+}
- if (a == tarval_bad || b == tarval_bad) assert(0 && "Comparison with tarval_bad");
- if (a == tarval_undefined || b == tarval_undefined) return False;
- if (a == b) return Eq;
- if (get_tarval_mode(a) != get_tarval_mode(b)) return Uo;
+/*
+ * comparison
+ */
+pn_Cmp tarval_cmp(tarval *a, tarval *b) {
+ assert(a);
+ assert(b);
- /* Here the two tarvals are unequal and of the same mode */
- switch (get_mode_sort(a->mode))
- {
- case irms_auxiliary:
- return False;
+ if (a == tarval_bad || b == tarval_bad) {
+ assert(0 && "Comparison with tarval_bad");
+ return pn_Cmp_False;
+ }
- case irms_float_number:
- return (fc_comp(a->value, b->value)==1)?(Gt):(Lt);
+ if (a == tarval_undefined || b == tarval_undefined)
+ return pn_Cmp_False;
- case irms_int_number:
- case irms_character:
- return (sc_comp(a->value, b->value)==1)?(Gt):(Lt);
+ if (a->mode != b->mode)
+ return pn_Cmp_False;
- case irms_internal_boolean:
- return (a == tarval_b_true)?(Gt):(Lt);
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ assert(0 && "cmp not implemented for vector modes");
+ }
- case irms_reference:
- return Uo;
- }
- return False;
+ /* 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:
+ 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_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)
-{
- ANNOUNCE();
- tarval tv;
-
- assert(src);
- assert(m);
-
- if (src->mode == m) return src;
-
- switch (get_mode_sort(src->mode))
- {
- case irms_auxiliary:
- break;
-
- case irms_float_number:
- break;
-
- case irms_int_number:
- switch (get_mode_sort(m))
- {
- case irms_int_number:
- case irms_character:
- tv.mode = m;
- tv.length = src->length;
- tv.value = src->value;
- if (overflows(&tv))
- {
- return tarval_bad;
- }
- return INSERT_TARVAL(&tv);
-
- case irms_internal_boolean:
- /* XXX C semantics */
- if (src == get_mode_null(src->mode)) return tarval_b_false;
- else return tarval_b_true;
-
- 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 *m) {
+ char *buffer;
+
+ 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/characters to something */
+ case irms_int_number:
+ switch (get_mode_sort(m)) {
+ case irms_int_number:
+ buffer = alloca(sc_get_buffer_length());
+ memcpy(buffer, src->value, sc_get_buffer_length());
+ sign_extend(buffer, m);
+ return get_tarval_overflow(buffer, 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, mode_is_signed(src->mode)));
+ buffer[100 - 1] = '\0';
+ 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);
+
+ case irms_reference:
+ /* allow 0 to be casted */
+ if (src == get_mode_null(src->mode))
+ return get_mode_null(m);
+ break;
+
+ 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_reference:
+ switch(get_mode_sort(m)) {
+ case 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, m);
+ default:
+ break;
+ }
+
+ break;
+ }
+
+ return tarval_bad;
}
/*
- * negation
+ * bitwise negation
*/
-tarval *tarval_neg(tarval *a)
-{
- ANNOUNCE();
- assert(a);
- assert(mode_is_num(a->mode)); /* negation only for numerical values */
- assert(mode_is_signed(a->mode)); /* negation is difficult without negative numbers, isn't it */
+tarval *tarval_not(tarval *a) {
+ char *buffer;
+
+ assert(a);
+
+ /* works for vector mode without changes */
- switch (get_mode_sort(a->mode))
- {
- case irms_int_number:
- sc_neg(a->value);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ 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);
- case irms_float_number:
- fc_neg(a->value);
- return get_tarval(fc_get_buffer(), fc_get_buffer_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:
- 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;
+
+ assert(a);
+ assert(mode_is_num(a->mode)); /* negation only for numerical values */
+
+ /* 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;
+ }
+
+ 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:
+ if(no_float)
+ 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)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode) || (get_mode_sort(a->mode) == irms_character && mode_is_int(b->mode)));
-
- 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 */
- sc_add(a->value, b->value);
- /* FIXME: Check for overflow */
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
-
- case irms_float_number:
- /* FIXME: Overflow/Underflow/transition to inf when mode < 80bit */
- fc_add(a->value, b->value);
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), a->mode);
-
- default:
- return tarval_bad;
- }
+tarval *tarval_add(tarval *a, tarval *b) {
+ char *buffer;
+
+ 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_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:
+ 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)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode) || (get_mode_sort(a->mode) == irms_character && mode_is_int(b->mode)));
-
- 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 */
- sc_sub(a->value, b->value);
- /* FIXME: check for overflow */
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
-
- case irms_float_number:
- /* FIXME: Overflow/Underflow/transition to inf when mode < 80bit */
- fc_add(a->value, b->value);
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), a->mode);
-
- default:
- return tarval_bad;
- }
+tarval *tarval_sub(tarval *a, tarval *b) {
+ char *buffer;
+
+ 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_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:
+ 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)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode) && mode_is_num(a->mode));
+tarval *tarval_mul(tarval *a, tarval *b) {
+ char *buffer;
+
+ assert(a);
+ assert(b);
+ assert(a->mode == b->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:
+ /* 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 */
- sc_mul(a->value, b->value);
- /* FIXME: check for overflow */
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ case irms_float_number:
+ if(no_float)
+ return tarval_bad;
- case irms_float_number:
- /* FIXME: Overflow/Underflow/transition to inf when mode < 80bit */
- fc_add(a->value, b->value);
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+ fc_mul(a->value, b->value, NULL);
+ return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
- default:
- return tarval_bad;
- }
+ 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);
+ assert(b);
+ assert((a->mode == b->mode) && mode_is_float(a->mode));
- /* FIXME: Overflow/Underflow/transition to inf when mode < 80bit */
- fc_div(a->value, b->value);
- return get_tarval(fc_get_buffer(), fc_get_buffer_length(), a->mode);
+ if(no_float)
+ return tarval_bad;
+
+ 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);
+ assert(b);
+ assert((a->mode == b->mode) && mode_is_int(a->mode));
+
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- /* modes of a,b are equal */
- sc_div(a->value, b->value);
- 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);
+ assert(b);
+ assert((a->mode == b->mode) && mode_is_int(a->mode));
+
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- /* modes of a,b are equal */
- sc_mod(a->value, b->value);
- 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_mod(a->value, b->value, NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
/*
* absolute value
*/
-tarval *tarval_abs(tarval *a)
-{
- ANNOUNCE();
- assert(a);
- assert(mode_is_num(a->mode));
+tarval *tarval_abs(tarval *a) {
+ char *buffer;
- switch (get_mode_sort(a->mode))
- {
- case irms_int_number:
- if (sc_comp(a->value, get_mode_null(a->mode)->value) == -1)
- {
- sc_neg(a->value);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
- }
- return a;
+ assert(a);
+ assert(mode_is_num(a->mode));
- case irms_float_number:
- break;
+ if (get_mode_n_vector_elems(a->mode) > 1) {
+ /* vector arithmetic not implemented yet */
+ return tarval_bad;
+ }
- default:
- return tarval_bad;
- }
- 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(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) && mode_is_int(a->mode));
+tarval *tarval_and(tarval *a, tarval *b) {
+ assert(a);
+ assert(b);
+ assert(a->mode == b->mode);
+
+ /* works even for vector modes */
+
+ switch(get_mode_sort(a->mode)) {
+ case irms_internal_boolean:
+ return (a == tarval_b_false) ? a : b;
- sc_and(a->value, b->value);
- 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;
+ }
}
/*
* bitwise or
*/
-tarval *tarval_or (tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert((a->mode == b->mode) && mode_is_int(a->mode));
+tarval *tarval_or (tarval *a, tarval *b) {
+ assert(a);
+ assert(b);
+ assert(a->mode == b->mode);
+
+ /* works even for vector modes */
- sc_or(a->value, b->value);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ 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);
+
+ 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) && mode_is_int(a->mode));
+tarval *tarval_eor(tarval *a, tarval *b) {
+ assert(a);
+ assert(b);
+ assert((a->mode == b->mode));
+
+ /* works even for vector modes */
- sc_or(a->value, b->value);
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ 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);
+
+ default:
+ assert(0 && "operation not defined on mode");
+ return tarval_bad;;
+ }
}
/*
* bitwise left shift
*/
-tarval *tarval_shl(tarval *a, tarval *b)
-{
- 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;
- sc_shl(a->value, b->value, get_mode_size_bits(a->mode), mode_is_signed(a->mode));
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ assert(a);
+ assert(b);
+ 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;
+ }
+
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
+
+ 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)
-{
- 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;
- sc_shr(a->value, b->value, get_mode_size_bits(a->mode), mode_is_signed(a->mode));
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ assert(a);
+ assert(b);
+ 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;
+ }
+
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
+
+ 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)
-{
- 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(a);
+ assert(b);
+ 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;
+ }
+
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
+
+ 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, b->value, get_mode_size_bits(a->mode), mode_is_signed(a->mode));
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ 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
*/
-tarval *tarval_rot(tarval *a, tarval *b)
-{
- ANNOUNCE();
- assert(a);
- assert(b);
- assert(mode_is_int(a->mode) && mode_is_int(b->mode));
+tarval *tarval_rot(tarval *a, tarval *b) {
+ char *temp_val = NULL;
+
+ assert(a);
+ assert(b);
+ 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;
+ }
- sc_rot(a->value, b->value, get_mode_size_bits(a->mode), mode_is_signed(a->mode));
- return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
+ if (get_mode_modulo_shift(a->mode) != 0) {
+ temp_val = alloca(sc_get_buffer_length());
+
+ 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_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);
}
/*
- * Output of tarvals
+ * carry flag of the last operation
*/
-int tarval_print(XP_PAR1, const xprintf_info *info ATTRIBUTE((unused)), XP_PARN)
-{
- static const tarval_mode_info default_info = { TVO_NATIVE, NULL, NULL };
-
- tarval *tv;
- const char *str;
- char buf[100];
- const tarval_mode_info *mode_info;
- const char *prefix, *suffix;
-
- ANNOUNCE();
-
- tv = XP_GETARG(tarval *, 0);
- 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 XPF3R("%s%s%s", prefix, str, suffix);
-
- case irms_float_number:
- return XPF3R("%s%s%s", prefix, fc_print_dec(tv->value, buf, sizeof(buf)), suffix);
-
- case irms_reference:
- if (tv->value != NULL)
- if (tarval_is_entity(tv))
- if (get_entity_peculiarity((entity *)tv->value) == existent)
- return XPF1R("&(%I)", get_entity_ld_ident((entity *)tv->value));
- else
- return XPSR("NULL");
- else
- return XPMR((char*)tv->value, tv->length);
- else
- return XPSR("void");
-
- case irms_internal_boolean:
- switch (mode_info->mode_output) {
-
- case TVO_DECIMAL:
- case TVO_OCTAL:
- case TVO_HEX:
- case TVO_BINARY:
- return XPF3R("%s%c%s", prefix, (tv == tarval_b_true) ? '1' : '0', suffix);
-
- case TVO_NATIVE:
- default:
- return XPF3R("%s%s%s", prefix, (tv == tarval_b_true) ? "true" : "false", suffix);
- }
-
- case irms_auxiliary:
- return XPSR("<BAD>");
- }
-
- return 0;
+int tarval_carry(void) {
+ return sc_had_carry();
}
/*
* 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:
- return snprintf(buf, len, "%s%s%s", prefix, fc_print_dec(tv->value, tv_buf, sizeof(tv_buf)), suffix);
-
- case irms_reference:
- if (tv->value != NULL)
- if (tarval_is_entity(tv))
- if (get_entity_peculiarity((entity *)tv->value) == existent)
- return snprintf(buf, len, "&(%I)", get_entity_ld_ident((entity *)tv->value));
- else
- return snprintf(buf, len, "NULL");
- else {
- if (size > tv->length) {
- memcpy(buf, tv->value, tv->length);
- buf[tv->length] = '\0';
- }
- else {
- /* truncated */
- memcpy(buf, tv->value, size-1);
- buf[size-1] = '\0';
- }
- return tv->length;
+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");
+ /* fall through */
+ 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_HEX:
+ case TVO_NATIVE:
+ 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:
+ return snprintf(buf, len, "<TV_OVERFLOW_BAD>");
}
- 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);
+ return 0;
+}
- case TVO_NATIVE:
- default:
- return snprintf(buf, len, "%s%s%s", prefix, (tv == tarval_b_true) ? "true" : "false", suffix);
- }
+/**
+ * Output of tarvals to stdio.
+ */
+int tarval_printf(tarval *tv) {
+ char buf[1024];
+ int res;
+
+ res = tarval_snprintf(buf, sizeof(buf), tv);
+ assert(res < (int) sizeof(buf) && "buffer to small for tarval_snprintf");
+ printf(buf);
+ return res;
+}
- case irms_auxiliary:
- return snprintf(buf, len, "<BAD>");
- }
+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 = xmalloc((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';
+ }
- return 0;
-}
+ res[n] = '\0';
-char *tarval_bitpattern(tarval *tv)
-{
- return NULL;
+ return res;
}
/*
* access to the bitpattern
*/
-unsigned char 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, tv->length, 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 tarval_set_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;
}
-/* Identifying some tarvals ??? */
-/* Implemented in old tv.c as such:
- * return 0 for additive neutral,
- * 1 for multiplicative neutral,
- * -1 for bitwise-and neutral
- * 2 else
+/*
+ * Returns the output options of one mode.
*
- * Implemented for completeness */
-long tarval_classify(tarval *tv)
-{
- ANNOUNCE();
- if (!tv || tv == tarval_bad) return 2;
+ * This functions returns the mode info of a given mode.
+ */
+const tarval_mode_info *get_tarval_mode_output_option(ir_mode *mode) {
+ assert(mode);
- if (tv == get_mode_null(tv->mode)) return 0;
- else if (tv == get_mode_one(tv->mode)) return 1;
- else if ((get_mode_sort(tv->mode) == irms_int_number)
- && (tv == new_tarval_from_long(-1, tv->mode))) return -1;
+ return mode->tv_priv;
+}
- return 2;
+/*
+ * Identifying tarvals values for algebraic simplifications.
+ *
+ * Returns:
+ * - TV_CLASSIFY_NULL for additive neutral or the NULL tarval for reference modes,
+ * - TV_CLASSIFY_ONE for multiplicative neutral,
+ * - TV_CLASSIFY_ALL_ONE for bitwise-and neutral
+ * - TV_CLASSIFY_OTHER else
+ */
+tarval_classification_t classify_tarval(tarval *tv) {
+ if (!tv || tv == tarval_bad) return TV_CLASSIFY_OTHER;
+
+ 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;
+
+ return TV_CLASSIFY_OTHER;
}
/*
- * Initialization of the tarval module: called before init_mode()
+ * Returns non-zero if a given (integer) tarval has only one single bit
+ * set.
*/
-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, TUNE_NCONSTANTS);
- values = new_set(memcmp, TUNE_NCONSTANTS);
- /* init with default precision */
- init_strcalc(0);
- /* init_fltcalc(0); not yet*/
+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;
+}
+
+/*
+ * 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);
+}
+
+/* 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);
+}
+
+/* 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();
+}
+
+/*
+ * 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;
+}
+
+/* Get the overflow mode for integer operations. */
+tarval_int_overflow_mode_t tarval_get_integer_overflow_mode(void) {
+ return int_overflow_mode;
+}
+
+/* Enable/Disable floating point constant folding. */
+int tarval_enable_fp_ops(int enable) {
+ int old = !no_float;
+
+ no_float = !enable;
+ return old;
}
/**
* default mode_info for output as HEX
*/
static const tarval_mode_info hex_output = {
- TVO_HEX,
- "0x",
- NULL,
+ TVO_HEX,
+ "0x",
+ NULL,
};
+/*
+ * Initialization of the tarval module: called before init_mode()
+ */
+void init_tarval_1(long null_value) {
+ _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(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);
+}
+
/*
* Initialization of the tarval module: called after init_mode()
*/
-void init_tarval_2(void)
-{
- ANNOUNCE();
-
- tarval_bad = (tarval*)malloc(sizeof(tarval));
- tarval_bad->mode = NULL;
-
- tarval_undefined = (tarval*)malloc(sizeof(tarval));
- tarval_undefined->mode = NULL;
-
- tarval_b_true = (tarval*)malloc(sizeof(tarval));
- tarval_b_true->mode = mode_b;
-
- tarval_b_false = (tarval*)malloc(sizeof(tarval));
- tarval_b_false->mode = mode_b;
-
- tarval_P_void = (tarval*)malloc(sizeof(tarval));
- tarval_P_void->mode = mode_P;
-
- /*
- * assign output modes that are compatible with the
- * old implementation: Hex output
- */
- tarval_set_mode_output_option(mode_U, &hex_output);
- tarval_set_mode_output_option(mode_C, &hex_output);
- tarval_set_mode_output_option(mode_Bs, &hex_output);
- tarval_set_mode_output_option(mode_Bu, &hex_output);
- tarval_set_mode_output_option(mode_Hs, &hex_output);
- tarval_set_mode_output_option(mode_Hu, &hex_output);
- tarval_set_mode_output_option(mode_Hs, &hex_output);
- tarval_set_mode_output_option(mode_Hu, &hex_output);
- tarval_set_mode_output_option(mode_Is, &hex_output);
- tarval_set_mode_output_option(mode_Iu, &hex_output);
- tarval_set_mode_output_option(mode_Ls, &hex_output);
- tarval_set_mode_output_option(mode_Lu, &hex_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);
+
+ /*
+ * 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;
}
/****************************************************************************
projects / libfirm / blobdiff