/*
- * Copyright (C) 1995-2011 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.
+ * Copyright (C) 2012 University of Karlsruhe.
*/
/**
* values.
* @date 2003
* @author Mathias Heil
- * @version $Id$
* @brief
*
* Values are stored in a format depending upon chosen arithmetic
#include "irnode.h"
#include "strcalc.h"
#include "fltcalc.h"
-#include "irtools.h"
+#include "util.h"
#include "xmalloc.h"
#include "firm_common.h"
#include "error.h"
target values */
#define N_CONSTANTS 2048
-/* unused, float to int doesn't work yet */
-typedef enum float_to_int_mode {
- TRUNCATE,
- ROUND
-} float_to_int_mode;
-
-static float_to_int_mode current_float_to_int_mode = TRUNCATE;
-
-/* set this to true if infinity should be clipped to +/- MAX_FLOAT */
-#define SWITCH_NOINFINITY 0
-/* set this to true if denormals should be clipped to zero */
-#define SWITCH_NODENORMALS 0
-
/****************************************************************************
* local definitions and macros
****************************************************************************/
# define TARVAL_VERIFY(a) ((void)0)
#endif
-#define INSERT_TARVAL(tv) ((ir_tarval*)set_insert(tarvals, (tv), sizeof(ir_tarval), hash_tv((tv))))
-#define FIND_TARVAL(tv) ((ir_tarval*)set_find(tarvals, (tv), sizeof(ir_tarval), hash_tv((tv))))
+#define INSERT_TARVAL(tv) (set_insert(ir_tarval, tarvals, (tv), sizeof(ir_tarval), hash_tv((tv))))
+#define FIND_TARVAL(tv) (set_find(ir_tarval, tarvals, (tv), sizeof(ir_tarval), hash_tv((tv))))
-#define INSERT_VALUE(val, size) (set_insert(values, (val), size, hash_val((val), size)))
-#define FIND_VALUE(val, size) (set_find(values, (val), size, hash_val((val), size)))
+#define INSERT_VALUE(val, size) (set_insert(char, values, (val), size, hash_val((val), size)))
+#define FIND_VALUE(val, size) (set_find(char, values, (val), size, hash_val((val), size)))
#define fail_verify(a) _fail_verify((a), __FILE__, __LINE__)
/** 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
****************************************************************************/
else
panic("%s:%d: Invalid tarval (null)", file, line);
}
+
+inline static
#ifdef __GNUC__
-inline static void tarval_verify(ir_tarval *tv) __attribute__ ((unused));
+ __attribute__((unused))
#endif
-
-inline static void tarval_verify(ir_tarval *tv)
+void tarval_verify(ir_tarval *tv)
{
assert(tv);
assert(tv->mode);
}
/* if there is such a tarval, it is returned, else tv is copied
* into the set */
- return (ir_tarval *)INSERT_TARVAL(&tv);
+ return INSERT_TARVAL(&tv);
}
/**
return get_tarval(temp, length, mode);
case irms_int_number:
- if (sc_comp(value, get_mode_max(mode)->value) == 1) {
+ if (sc_comp(value, get_mode_max(mode)->value) == ir_relation_greater) {
switch (tarval_get_integer_overflow_mode()) {
case TV_OVERFLOW_SATURATE:
return get_mode_max(mode);
return get_tarval(value, length, mode);
}
}
- if (sc_comp(value, get_mode_min(mode)->value) == -1) {
+ if (sc_comp(value, get_mode_min(mode)->value) == ir_relation_less) {
switch (tarval_get_integer_overflow_mode()) {
case TV_OVERFLOW_SATURATE:
return get_mode_min(mode);
case TV_OVERFLOW_WRAP: {
- char *temp = (char*) alloca(sc_get_buffer_length());
+ temp = (char*) 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);
break;
case irms_float_number:
-#if SWITCH_NOINFINITY
- if (fc_is_inf((const fp_value*) value)) {
- /* clip infinity to maximum value */
- return fc_is_negative((const fp_value*) value) ? get_mode_min(mode) : get_mode_max(mode);
- }
-#endif
-#if SWITCH_NODENORMALS
- if (fc_is_subnormal((const fp_value*) value)) {
- /* clip denormals to zero */
- return get_mode_null(mode);
- }
-#endif
break;
default:
return get_tarval(value, length, mode);
}
-/*
- * public variables declared in tv.h
- */
-static ir_tarval reserved_tv[6];
+static ir_tarval reserved_tv[2];
+static ir_tarval nonconst_tvs[4];
ir_tarval *tarval_b_false = &reserved_tv[0];
ir_tarval *tarval_b_true = &reserved_tv[1];
-ir_tarval *tarval_bad = &reserved_tv[2];
-ir_tarval *tarval_undefined = &reserved_tv[3];
-ir_tarval *tarval_reachable = &reserved_tv[4];
-ir_tarval *tarval_unreachable = &reserved_tv[5];
+ir_tarval *tarval_bad = &nonconst_tvs[0];
+ir_tarval *tarval_undefined = &nonconst_tvs[1];
+ir_tarval *tarval_reachable = &nonconst_tvs[2];
+ir_tarval *tarval_unreachable = &nonconst_tvs[3];
/**
* 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:
- case 128: return &extended_desc; /* FIXME: HACK for x86 where we have
- sizeof(long double)==16 with 10 byte
- real payload */
- /* case 128: return &quad_desc; */
- default:
- panic("Unsupported mode in get_descriptor()");
- }
+static const float_descriptor_t *get_descriptor(const ir_mode *mode)
+{
+ return &mode->float_desc;
}
ir_tarval *new_integer_tarval_from_str(const char *str, size_t len, char sign,
str += 2;
len -= 2;
base = 16;
+ } else if (str[1] == 'b' || str[1] == 'B') {
+ str += 2;
+ len -= 2;
+ base = 2;
} else {
++str;
--len;
return get_tarval_overflow(buffer, sc_get_buffer_length(), mode);
}
-/*
- * Constructors =============================================================
- */
ir_tarval *new_tarval_from_str(const char *str, size_t len, ir_mode *mode)
{
- const ieee_descriptor_t *desc;
+ const float_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"))
/* FALLTHROUGH */
case irms_int_number:
return new_tarval_from_str_int(str, len, mode);
+ default:
+ panic("Unsupported tarval creation with mode %F", mode);
}
- panic("Unsupported tarval creation with mode %F", mode);
}
-/*
- * helper function, create a tarval from long
- */
ir_tarval *new_tarval_from_long(long l, ir_mode *mode)
{
assert(mode);
}
}
-/* returns non-zero if can be converted to long */
int tarval_is_long(ir_tarval *tv)
{
if (!mode_is_int(tv->mode) && !mode_is_reference(tv->mode))
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) {
+ if (sc_comp(sc_get_buffer(), tv->value) == ir_relation_less) {
/* 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(ir_tarval* tv)
{
assert(tarval_is_long(tv) && "tarval too big to fit in long");
ir_tarval *new_tarval_from_long_double(long double d, ir_mode *mode)
{
- const ieee_descriptor_t *desc;
+ const float_descriptor_t *desc;
assert(mode && (get_mode_sort(mode) == irms_float_number));
desc = get_descriptor(mode);
return new_tarval_from_long_double(d, mode);
}
-/* returns non-zero if can be converted to double */
int tarval_is_double(ir_tarval *tv)
{
assert(tv);
return get_tarval_long_double(tv);
}
-
-/*
- * Access routines for tarval fields ========================================
- */
-
-/* get the mode of the tarval */
ir_mode *(get_tarval_mode)(const ir_tarval *tv)
{
return _get_tarval_mode(tv);
ir_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;
- }
+ const float_descriptor_t *desc;
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_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);
+ default:
+ panic("mode %F does not support maximum value", mode);
}
- return tarval_bad;
}
ir_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;
- }
+ const float_descriptor_t *desc;
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_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);
+ default:
+ panic("mode %F does not support minimum value", mode);
}
- return tarval_bad;
}
/** The bit pattern for the pointer NULL */
ir_tarval *get_tarval_null(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_control_flow:
- case irms_memory:
- case irms_auxiliary:
- panic("mode %F does not support null value", mode);
-
case irms_float_number:
return new_tarval_from_double(0.0, mode);
case irms_reference:
return new_tarval_from_long(_null_value, mode);
+ default:
+ panic("mode %F does not support null value", mode);
}
- return tarval_bad;
}
ir_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_reference:
case irms_int_number:
return new_tarval_from_long(1l, mode);
+ default:
+ panic("mode %F does not support one value", mode);
}
- return tarval_bad;
}
ir_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);
+
+ default:
+ panic("mode %F does not support all-one value", mode);
}
- return tarval_bad;
}
int tarval_is_constant(ir_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]);
+ size_t const num_res = ARRAY_SIZE(nonconst_tvs);
+ return tv < &nonconst_tvs[0] || &nonconst_tvs[num_res] <= tv;
}
ir_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_int_number:
return new_tarval_from_long(-1l, mode);
+
+ default:
+ panic("mode %F does not support minus one value", mode);
}
- return tarval_bad;
}
ir_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");
+ const float_descriptor_t *desc;
if (get_mode_sort(mode) == irms_float_number) {
desc = get_descriptor(mode);
ir_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);
+ const float_descriptor_t *desc = get_descriptor(mode);
fc_get_plusinf(desc, NULL);
return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
} else
ir_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);
+ const float_descriptor_t *desc = get_descriptor(mode);
fc_get_minusinf(desc, NULL);
return get_tarval(fc_get_buffer(), fc_get_buffer_length(), mode);
} else
* Arithmetic operations on tarvals ========================================
*/
-/*
- * test if negative number, 1 means 'yes'
- */
int tarval_is_negative(ir_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;
+ return sc_comp(a->value, get_mode_null(a->mode)->value) == ir_relation_less ? 1 : 0;
case irms_float_number:
return fc_is_negative((const fp_value*) a->value);
}
}
-/*
- * test if null, 1 means 'yes'
- */
int tarval_is_null(ir_tarval *a)
{
return
a == get_mode_null(get_tarval_mode(a));
}
-/*
- * test if one, 1 means 'yes'
- */
int tarval_is_one(ir_tarval *a)
{
return
tv == get_mode_all_one(get_tarval_mode(tv));
}
-/*
- * test if one, 1 means 'yes'
- */
int tarval_is_minus_one(ir_tarval *a)
{
return
a == get_mode_minus_one(get_tarval_mode(a));
}
-/*
- * comparison
- */
ir_relation tarval_cmp(ir_tarval *a, ir_tarval *b)
{
- carry_flag = -1;
-
if (a == tarval_bad || b == tarval_bad) {
panic("Comparison with tarval_bad");
}
if (a->mode != b->mode)
return ir_relation_false;
- if (get_mode_n_vector_elems(a->mode) > 1) {
- /* vector arithmetic not implemented yet */
- panic("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 ir_relation_equal;
- return ir_relation_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((const fp_value*) a->value, (const fp_value*) b->value)) {
- case -1: return ir_relation_less;
- case 0: return ir_relation_equal;
- case 1: return ir_relation_greater;
- case 2: return ir_relation_unordered;
- default: return ir_relation_false;
- }
+ return fc_comp((fp_value const*)a->value, (fp_value const*)b->value);
+
case irms_reference:
case irms_int_number:
if (a == b)
return ir_relation_equal;
- return sc_comp(a->value, b->value) == 1 ? ir_relation_greater : ir_relation_less;
+ return sc_comp(a->value, b->value);
case irms_internal_boolean:
if (a == b)
return ir_relation_equal;
return a == tarval_b_true ? ir_relation_greater : ir_relation_less;
+
+ default:
+ panic("can't compare values of mode %F", a->mode);
}
- return ir_relation_false;
}
-/*
- * convert to other mode
- */
ir_tarval *tarval_convert_to(ir_tarval *src, ir_mode *dst_mode)
{
char *buffer;
fp_value *res = NULL;
- const ieee_descriptor_t *desc;
+ const float_descriptor_t *desc;
int len;
- 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 */
+ /* cast float to something */
case irms_float_number:
switch (get_mode_sort(dst_mode)) {
case irms_float_number:
return get_tarval(fc_get_buffer(), fc_get_buffer_length(), dst_mode);
case irms_int_number:
- switch (current_float_to_int_mode) {
- case TRUNCATE:
- res = fc_int((const fp_value*) src->value, NULL);
- break;
- case ROUND:
- res = fc_rnd((const fp_value*) src->value, NULL);
- break;
- }
+ res = fc_int((const fp_value*) src->value, NULL);
buffer = (char*) 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;
}
- break;
+ /* the rest can't be converted */
+ return tarval_bad;
/* cast int/characters to something */
case irms_int_number:
case irms_int_number:
buffer = (char*) 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:
return get_tarval_overflow(buffer, src->length, dst_mode);
}
break;
+ default:
+ return tarval_bad;
}
return tarval_bad;
}
-/*
- * bitwise negation
- */
ir_tarval *tarval_not(ir_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:
}
}
-/*
- * arithmetic negation
- */
ir_tarval *tarval_neg(ir_tarval *a)
{
char *buffer;
assert(mode_is_num(a->mode)); /* negation only for numerical values */
- carry_flag = -1;
-
/* 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 = (char*) alloca(sc_get_buffer_length());
return get_tarval_overflow(buffer, a->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;*/
-
fc_neg((const fp_value*) a->value, NULL);
return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
}
}
-/*
- * addition
- */
ir_tarval *tarval_add(ir_tarval *a, ir_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) {
/* modes of a,b are equal, so result has mode of a as this might be the character */
buffer = (char*) 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((const fp_value*) a->value, (const fp_value*) b->value, NULL);
return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
}
}
-/*
- * subtraction
- */
ir_tarval *tarval_sub(ir_tarval *a, ir_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);
/* modes of a,b are equal, so result has mode of a as this might be the character */
buffer = (char*) 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((const fp_value*) a->value, (const fp_value*) b->value, NULL);
return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
}
}
-/*
- * multiplication
- */
ir_tarval *tarval_mul(ir_tarval *a, ir_tarval *b)
{
char *buffer;
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;
- }
-
switch (get_mode_sort(a->mode)) {
case irms_int_number:
/* modes of a,b are equal */
return get_tarval_overflow(buffer, a->length, a->mode);
case irms_float_number:
- if (no_float)
- return tarval_bad;
-
fc_mul((const fp_value*) a->value, (const fp_value*) b->value, NULL);
return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
}
}
-/*
- * division
- * overflow is impossible, but look out for division by zero
- */
ir_tarval *tarval_div(ir_tarval *a, ir_tarval *b)
{
ir_mode *mode = a->mode;
assert(mode == b->mode);
- carry_flag = -1;
-
- if (get_mode_n_vector_elems(mode) > 1) {
- /* vector arithmetic not implemented yet */
- return tarval_bad;
- }
-
if (mode_is_int(mode)) {
/* x/0 error */
if (b == get_mode_null(mode))
}
}
-/*
- * remainder
- * overflow is impossible, but look out for division by zero
- */
ir_tarval *tarval_mod(ir_tarval *a, ir_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 */
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
- */
ir_tarval *tarval_divmod(ir_tarval *a, ir_tarval *b, ir_tarval **mod)
{
int len = sc_get_buffer_length();
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 */
return get_tarval(div_res, len, a->mode);
}
-/*
- * absolute value
- */
ir_tarval *tarval_abs(ir_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) {
+ if (sc_comp(a->value, get_mode_null(a->mode)->value) == ir_relation_less) {
buffer = (char*) 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((const fp_value*) a->value,
- (const fp_value*) get_mode_null(a->mode)->value) == -1) {
+ if (fc_is_negative((fp_value const*)a)) {
fc_neg((const fp_value*) a->value, NULL);
return get_tarval_overflow(fc_get_buffer(), fc_get_buffer_length(), a->mode);
}
return tarval_bad;
}
-/*
- * bitwise and
- */
ir_tarval *tarval_and(ir_tarval *a, ir_tarval *b)
{
assert(a->mode == b->mode);
- /* 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;
+ case irms_reference:
case irms_int_number:
sc_and(a->value, b->value, NULL);
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
{
assert(a->mode == b->mode);
- /* works even for vector modes */
- carry_flag = 0;
-
switch (get_mode_sort(a->mode)) {
case irms_internal_boolean:
return a == tarval_b_true && b == tarval_b_false ? tarval_b_true : tarval_b_false;
+ case irms_reference:
case irms_int_number:
sc_andnot(a->value, b->value, NULL);
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
}
-/*
- * bitwise or
- */
ir_tarval *tarval_or(ir_tarval *a, ir_tarval *b)
{
assert(a->mode == b->mode);
- /* 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;
+ case irms_reference:
case irms_int_number:
sc_or(a->value, b->value, NULL);
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
}
-/*
- * bitwise exclusive or (xor)
- */
ir_tarval *tarval_eor(ir_tarval *a, ir_tarval *b)
{
assert((a->mode == b->mode));
- /* 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;
+ case irms_reference:
case irms_int_number:
sc_xor(a->value, b->value, NULL);
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
}
-/*
- * bitwise left shift
- */
ir_tarval *tarval_shl(ir_tarval *a, ir_tarval *b)
{
char *temp_val = NULL;
assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- carry_flag = -1;
-
- 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 = (char*) alloca(sc_get_buffer_length());
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
-/*
- * bitwise unsigned right shift
- */
+ir_tarval *tarval_shl_unsigned(ir_tarval *a, unsigned b)
+{
+ ir_mode *mode = a->mode;
+ unsigned modulo = get_mode_modulo_shift(mode);
+ if (modulo != 0)
+ b %= modulo;
+ assert((unsigned)(long)b==b);
+ sc_shlI(a->value, (long)b, get_mode_size_bits(mode), mode_is_signed(mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+}
+
ir_tarval *tarval_shr(ir_tarval *a, ir_tarval *b)
{
char *temp_val = NULL;
assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- carry_flag = -1;
-
- 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 = (char*) alloca(sc_get_buffer_length());
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
-/*
- * bitwise signed right shift
- */
+ir_tarval *tarval_shr_unsigned(ir_tarval *a, unsigned b)
+{
+ ir_mode *mode = a->mode;
+ unsigned modulo = get_mode_modulo_shift(mode);
+ if (modulo != 0)
+ b %= modulo;
+ assert((unsigned)(long)b==b);
+ sc_shrI(a->value, (long)b, get_mode_size_bits(mode), mode_is_signed(mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+}
+
ir_tarval *tarval_shrs(ir_tarval *a, ir_tarval *b)
{
char *temp_val = NULL;
assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- carry_flag = -1;
-
- 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 = (char*) alloca(sc_get_buffer_length());
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
-/*
- * bitwise rotation to left
- */
+ir_tarval *tarval_shrs_unsigned(ir_tarval *a, unsigned b)
+{
+ ir_mode *mode = a->mode;
+ unsigned modulo = get_mode_modulo_shift(mode);
+ if (modulo != 0)
+ b %= modulo;
+ assert((unsigned)(long)b==b);
+ sc_shrsI(a->value, (long)b, get_mode_size_bits(mode), mode_is_signed(mode), NULL);
+ return get_tarval(sc_get_buffer(), sc_get_buffer_length(), mode);
+}
+
ir_tarval *tarval_rotl(ir_tarval *a, ir_tarval *b)
{
char *temp_val = NULL;
assert(mode_is_int(a->mode) && mode_is_int(b->mode));
- carry_flag = -1;
-
- 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 = (char*) alloca(sc_get_buffer_length());
return get_tarval(sc_get_buffer(), sc_get_buffer_length(), a->mode);
}
-/*
- * carry flag of the last operation
- */
-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, ir_tarval *tv)
{
static const tarval_mode_info default_info = { TVO_NATIVE, NULL, NULL };
default:
return snprintf(buf, len, "%s%s%s", prefix, fc_print((const fp_value*) tv->value, tv_buf, sizeof(tv_buf), FC_DEC), suffix);
}
- break;
case irms_internal_boolean:
switch (mode_info->mode_output) {
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:
+ default:
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)
+ else if (tv == tarval_undefined)
+ return snprintf(buf, len, "<TV_UNDEFINED>");
+ else if (tv == tarval_reachable)
return snprintf(buf, len, "<TV_REACHABLE>");
- return snprintf(buf, len, "<TV_??""?>");
+ else if (tv == tarval_unreachable)
+ return snprintf(buf, len, "<TV_UNREACHABLE>");
+ else
+ return snprintf(buf, len, "<TV_??""?>");
}
-
- return 0;
}
-/**
- * Output of tarvals to stdio.
- */
int tarval_printf(ir_tarval *tv)
{
char buf[1024];
return res;
}
-/*
- * access to the bitpattern
- */
unsigned char get_tarval_sub_bits(ir_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:
+ case irma_x86_extended_float:
return fc_sub_bits((const fp_value*) tv->value, get_mode_size_bits(tv->mode), byte_ofs);
default:
- panic("get_tarval_sub_bits(): arithmetic mode not supported");
+ panic("arithmetic mode not supported");
}
}
-/*
- * Specify the output options of one mode.
- *
- * This functions stores the modinfo, so DO NOT DESTROY it.
- *
- * Returns zero on success.
- */
int set_tarval_mode_output_option(ir_mode *mode, const tarval_mode_info *modeinfo)
{
assert(mode);
return 0;
}
-/*
- * Returns the output options of one mode.
- *
- * This functions returns the mode info of a given mode.
- */
const tarval_mode_info *get_tarval_mode_output_option(ir_mode *mode)
{
assert(mode);
return (const tarval_mode_info*) mode->tv_priv;
}
-/*
- * Returns non-zero if a given (integer) tarval has only one single bit
- * set.
- */
int tarval_is_single_bit(ir_tarval *tv)
{
int i, l;
return bits;
}
-/*
- * Return the number of set bits in a given (integer) tarval.
- */
int get_tarval_popcount(ir_tarval *tv)
{
int i, l;
return bits;
}
-/**
- * Return the number of the lowest set bit in a given (integer) tarval.
- *
- * @param tv the tarval
- *
- * @return number of lowest set bit or -1 on error
- */
int get_tarval_lowest_bit(ir_tarval *tv)
{
int i, l;
return -1;
}
-/*
- * Returns non-zero if the mantissa of a floating point IEEE-754
- * tarval is zero (i.e. 1.0Exxx)
- */
-int tarval_ieee754_zero_mantissa(ir_tarval *tv)
+int tarval_zero_mantissa(ir_tarval *tv)
{
- assert(get_mode_arithmetic(tv->mode) == irma_ieee754);
+ assert(get_mode_arithmetic(tv->mode) == irma_ieee754
+ || get_mode_arithmetic(tv->mode) == irma_x86_extended_float);
return fc_zero_mantissa((const fp_value*) tv->value);
}
-/* Returns the exponent of a floating point IEEE-754 tarval. */
-int tarval_ieee754_get_exponent(ir_tarval *tv)
+int tarval_get_exponent(ir_tarval *tv)
{
- assert(get_mode_arithmetic(tv->mode) == irma_ieee754);
+ assert(get_mode_arithmetic(tv->mode) == irma_ieee754
+ || get_mode_arithmetic(tv->mode) == irma_x86_extended_float);
return fc_get_exponent((const fp_value*) tv->value);
}
-/*
- * Check if the tarval can be converted to the given mode without
- * precision loss.
- */
int tarval_ieee754_can_conv_lossless(ir_tarval *tv, ir_mode *mode)
{
- const ieee_descriptor_t *desc = get_descriptor(mode);
+ const float_descriptor_t *desc = get_descriptor(mode);
return fc_can_lossless_conv_to((const fp_value*) 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(ir_tarval *tv)
{
if (! mode_is_float(tv->mode))
return fc_is_nan((const fp_value*) tv->value);
}
-/* check if its the a floating point +inf */
int tarval_is_plus_inf(ir_tarval *tv)
{
if (! mode_is_float(tv->mode))
&& !fc_is_negative((const fp_value*) tv->value);
}
-/* check if its the a floating point -inf */
int tarval_is_minus_inf(ir_tarval *tv)
{
if (! mode_is_float(tv->mode))
&& fc_is_negative((const fp_value*) tv->value);
}
-/* check if the tarval represents a finite value */
int tarval_is_finite(ir_tarval *tv)
{
if (mode_is_float(tv->mode))
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;
}
-/* 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. */
-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
*/
NULL,
};
-/*
- * Initialization of the tarval module: called before init_mode()
- */
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
init_fltcalc(support_quad_precision ? 112 : 64);
}
-/*
- * Initialization of the tarval module: called after init_mode()
- */
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
set_tarval_mode_output_option(mode_P, &hex_output);
}
-/* free all memory occupied by tarval. */
void finish_tarval(void)
{
finish_strcalc();
projects / libfirm / blobdiff