* Copyright: (c) 1998-2003 Universität Karlsruhe
* Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
*/
-
-
#ifdef HAVE_CONFIG_H
-# include <config.h>
+# include "config.h"
#endif
+#ifdef HAVE_STDLIB_H
# include <stdlib.h>
-# include <stddef.h>
+#endif
+#ifdef HAVE_STRING_H
# include <string.h>
-# include <stdbool.h>
+#endif
+# include <stddef.h>
+
+# include "irprog_t.h"
# include "irmode_t.h"
# include "ident.h"
-# include "tv.h"
+# include "tv_t.h"
# include "obst.h"
+# include "irhooks.h"
#if 0
static long long count = 0;
if (m->sort == n->sort &&
m->arithmetic == n->arithmetic &&
m->size == n->size &&
- m->align == n->align &&
m->sign == n->sign &&
m->modulo_shift == n->modulo_shift &&
m->vector_elem == n->vector_elem)
case irms_character:
case irms_int_number:
case irms_float_number:
- mode->min = get_tarval_min(mode);
- mode->max = get_tarval_max(mode);
+ mode->min = get_tarval_min(mode);
+ mode->max = get_tarval_max(mode);
mode->null = get_tarval_null(mode);
- mode->one = get_tarval_one(mode);
+ mode->one = get_tarval_one(mode);
+ mode->minus_one = get_tarval_minus_one(mode);
break;
case irms_internal_boolean:
- mode->min = tarval_b_false;
- mode->max = tarval_b_true;
+ mode->min = tarval_b_false;
+ mode->max = tarval_b_true;
mode->null = tarval_b_false;
- mode->one = tarval_b_true;
+ mode->one = tarval_b_true;
+ mode->minus_one = tarval_bad;
break;
case irms_reference:
- mode->min = tarval_bad;
- mode->max = tarval_bad;
- mode->null = (get_mode_modecode(mode) == irm_P) ? tarval_P_void : tarval_bad;
- mode->one = tarval_bad;
+ mode->min = tarval_bad;
+ mode->max = tarval_bad;
+ mode->null = get_tarval_null(mode);
+ mode->one = tarval_bad;
+ mode->minus_one = tarval_bad;
break;
case irms_auxiliary:
case irms_memory:
case irms_control_flow:
- mode->min = tarval_bad;
- mode->max = tarval_bad;
+ mode->min = tarval_bad;
+ mode->max = tarval_bad;
mode->null = tarval_bad;
- mode->one = tarval_bad;
+ mode->one = tarval_bad;
+ mode->minus_one = tarval_bad;
break;
}
}
ir_mode *mode_P;
/* machine specific modes */
-ir_mode *mode_P_mach; /* machine specific pointer mode */
+ir_mode *mode_P_code; /**< machine specific pointer mode for code addresses */
+ir_mode *mode_P_data; /**< machine specific pointer mode for data addresses */
/* * *
* functions defined in irmode.h
* * */
/* JNI access functions */
-INLINE ir_mode *get_modeT(void) { ANNOUNCE(); return mode_T; }
-INLINE ir_mode *get_modeF(void) { ANNOUNCE(); return mode_F; }
-INLINE ir_mode *get_modeD(void) { ANNOUNCE(); return mode_D; }
-INLINE ir_mode *get_modeE(void) { ANNOUNCE(); return mode_E; }
-INLINE ir_mode *get_modeBs(void) { ANNOUNCE(); return mode_Bs; }
-INLINE ir_mode *get_modeBu(void) { ANNOUNCE(); return mode_Bu; }
-INLINE ir_mode *get_modeHs(void) { ANNOUNCE(); return mode_Hs; }
-INLINE ir_mode *get_modeHu(void) { ANNOUNCE(); return mode_Hu; }
-INLINE ir_mode *get_modeIs(void) { ANNOUNCE(); return mode_Is; }
-INLINE ir_mode *get_modeIu(void) { ANNOUNCE(); return mode_Iu; }
-INLINE ir_mode *get_modeLs(void) { ANNOUNCE(); return mode_Ls; }
-INLINE ir_mode *get_modeLu(void) { ANNOUNCE(); return mode_Lu; }
-INLINE ir_mode *get_modeC(void) { ANNOUNCE(); return mode_C; }
-INLINE ir_mode *get_modeU(void) { ANNOUNCE(); return mode_U; }
-INLINE ir_mode *get_modeb(void) { ANNOUNCE(); return mode_b; }
-INLINE ir_mode *get_modeP(void) { ANNOUNCE(); return mode_P; }
-INLINE ir_mode *get_modeX(void) { ANNOUNCE(); return mode_X; }
-INLINE ir_mode *get_modeM(void) { ANNOUNCE(); return mode_M; }
-INLINE ir_mode *get_modeBB(void) { ANNOUNCE(); return mode_BB; }
-INLINE ir_mode *get_modeANY(void) { ANNOUNCE(); return mode_ANY; }
-INLINE ir_mode *get_modeBAD(void) { ANNOUNCE(); return mode_BAD; }
+ir_mode *get_modeT(void) { ANNOUNCE(); return mode_T; }
+ir_mode *get_modeF(void) { ANNOUNCE(); return mode_F; }
+ir_mode *get_modeD(void) { ANNOUNCE(); return mode_D; }
+ir_mode *get_modeE(void) { ANNOUNCE(); return mode_E; }
+ir_mode *get_modeBs(void) { ANNOUNCE(); return mode_Bs; }
+ir_mode *get_modeBu(void) { ANNOUNCE(); return mode_Bu; }
+ir_mode *get_modeHs(void) { ANNOUNCE(); return mode_Hs; }
+ir_mode *get_modeHu(void) { ANNOUNCE(); return mode_Hu; }
+ir_mode *get_modeIs(void) { ANNOUNCE(); return mode_Is; }
+ir_mode *get_modeIu(void) { ANNOUNCE(); return mode_Iu; }
+ir_mode *get_modeLs(void) { ANNOUNCE(); return mode_Ls; }
+ir_mode *get_modeLu(void) { ANNOUNCE(); return mode_Lu; }
+ir_mode *get_modeC(void) { ANNOUNCE(); return mode_C; }
+ir_mode *get_modeU(void) { ANNOUNCE(); return mode_U; }
+ir_mode *get_modeb(void) { ANNOUNCE(); return mode_b; }
+ir_mode *get_modeP(void) { ANNOUNCE(); return mode_P; }
+ir_mode *get_modeX(void) { ANNOUNCE(); return mode_X; }
+ir_mode *get_modeM(void) { ANNOUNCE(); return mode_M; }
+ir_mode *get_modeBB(void) { ANNOUNCE(); return mode_BB; }
+ir_mode *get_modeANY(void) { ANNOUNCE(); return mode_ANY; }
+ir_mode *get_modeBAD(void) { ANNOUNCE(); return mode_BAD; }
-ir_mode *(get_modeP_mach)(void) {
+ir_mode *(get_modeP_code)(void) {
ANNOUNCE();
- return __get_modeP_mach();
+ return _get_modeP_code();
}
-void (set_modeP_mach)(ir_mode *p) {
+ir_mode *(get_modeP_data)(void) {
ANNOUNCE();
- __set_modeP_mach(p);
+ return _get_modeP_data();
+}
+
+void set_modeP_code(ir_mode *p) {
+ assert(mode_is_reference(p));
+
+ mode_P_code = p;
+}
+
+void set_modeP_data(ir_mode *p) {
+ assert(mode_is_reference(p));
+
+ mode_P_data = p;
}
/**
- * Registers a new mode if not defined yet, else returns
- * the "equivalent" one.
+ * Registers a new mode.
+ *
+ * @param new_mode The new mode template.
*/
-static ir_mode *register_mode(const ir_mode* new_mode)
+static ir_mode *register_mode(const ir_mode *new_mode)
{
ir_mode *mode = NULL;
assert(new_mode);
/* copy mode struct to modes array */
- mode = (ir_mode*)obstack_copy(&modes, new_mode, sizeof(ir_mode));
+ mode = (ir_mode *)obstack_copy(&modes, new_mode, sizeof(*mode));
mode->kind = k_ir_mode;
- if(num_modes>=irm_max) mode->code = num_modes;
+ if (num_modes >= irm_max) mode->code = num_modes;
num_modes++;
+ /* add the new mode to the irp list of modes */
+ add_irp_mode(mode);
+
set_mode_values(mode);
+ hook_new_mode(new_mode, mode);
return mode;
}
/*
* Creates a new mode.
*/
-ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int align, int sign,
+ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int sign,
mode_arithmetic arithmetic, unsigned int modulo_shift )
{
ir_mode mode_tmpl;
- ir_mode *mode;
+ ir_mode *mode = NULL;
mode_tmpl.name = new_id_from_str(name);
mode_tmpl.sort = sort;
mode_tmpl.size = bit_size;
- mode_tmpl.align = align;
mode_tmpl.sign = sign ? 1 : 0;
mode_tmpl.modulo_shift = (mode_tmpl.sort == irms_int_number) ? modulo_shift : 0;
mode_tmpl.vector_elem = 1;
mode_tmpl.tv_priv = NULL;
mode = find_mode(&mode_tmpl);
- if (mode)
- {
+ if (mode) {
+ hook_new_mode(&mode_tmpl, mode);
return mode;
}
case irms_memory:
case irms_internal_boolean:
assert(0 && "internal modes cannot be user defined");
- return NULL;
+ break;
case irms_float_number:
case irms_int_number:
case irms_reference:
case irms_character:
- return register_mode(&mode_tmpl);
+ mode = register_mode(&mode_tmpl);
}
- return NULL; /* to shut up gcc */
+ return mode;
}
/*
* Creates a new vector mode.
*/
-ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int align, int sign,
+ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int sign,
mode_arithmetic arithmetic, unsigned int modulo_shift )
{
ir_mode mode_tmpl;
- ir_mode *mode;
+ ir_mode *mode = NULL;
mode_tmpl.name = new_id_from_str(name);
mode_tmpl.sort = sort;
mode_tmpl.size = bit_size * num_of_elem;
- mode_tmpl.align = align;
mode_tmpl.sign = sign ? 1 : 0;
mode_tmpl.modulo_shift = (mode_tmpl.sort == irms_int_number) ? modulo_shift : 0;
mode_tmpl.vector_elem = num_of_elem;
mode_tmpl.tv_priv = NULL;
mode = find_mode(&mode_tmpl);
- if (mode)
+ if (mode) {
+ hook_new_mode(&mode_tmpl, mode);
return mode;
+ }
if (num_of_elem <= 1) {
assert(0 && "vector modes should have at least 2 elements");
case irms_memory:
case irms_internal_boolean:
assert(0 && "internal modes cannot be user defined");
- return NULL;
+ break;
case irms_reference:
case irms_character:
assert(0 && "only integer and floating point modes can be vectorized");
- return NULL;
+ break;
case irms_float_number:
assert(0 && "not yet implemented");
- return NULL;
+ break;
case irms_int_number:
- return register_mode(&mode_tmpl);
+ mode = register_mode(&mode_tmpl);
}
- return NULL; /* to shut up gcc */
+ return mode;
}
-/* Functions for the direct access to all attributes od a ir_mode */
+/* Functions for the direct access to all attributes of an ir_mode */
modecode
(get_mode_modecode)(const ir_mode *mode)
{
ANNOUNCE();
- return __get_mode_modecode(mode);
+ return _get_mode_modecode(mode);
}
ident *
(get_mode_ident)(const ir_mode *mode)
{
ANNOUNCE();
- return __get_mode_ident(mode);
+ return _get_mode_ident(mode);
}
const char *
(get_mode_sort)(const ir_mode* mode)
{
ANNOUNCE();
- return __get_mode_sort(mode);
+ return _get_mode_sort(mode);
}
int
(get_mode_size_bits)(const ir_mode *mode)
{
ANNOUNCE();
- return __get_mode_size_bits(mode);
+ return _get_mode_size_bits(mode);
}
int
(get_mode_size_bytes)(const ir_mode *mode) {
ANNOUNCE();
- return __get_mode_size_bytes(mode);
-}
-
-int
-(get_mode_align)(const ir_mode *mode)
-{
- ANNOUNCE();
- return __get_mode_align(mode);
+ return _get_mode_size_bytes(mode);
}
int
(get_mode_sign)(const ir_mode *mode)
{
ANNOUNCE();
- return __get_mode_sign(mode);
+ return _get_mode_sign(mode);
}
int
*/
unsigned int
(get_mode_modulo_shift)(const ir_mode *mode) {
- return __get_mode_modulo_shift(mode);
+ return _get_mode_modulo_shift(mode);
}
unsigned int
-(get_mode_vector_elems)(const ir_mode *mode) {
- return __get_mode_vector_elems(mode);
+(get_mode_n_vector_elems)(const ir_mode *mode) {
+ return _get_mode_vector_elems(mode);
}
void *
(get_mode_link)(const ir_mode *mode)
{
ANNOUNCE();
- return __get_mode_link(mode);
+ return _get_mode_link(mode);
}
void
(set_mode_link)(ir_mode *mode, void *l)
{
- __set_mode_link(mode, l);
+ _set_mode_link(mode, l);
}
tarval *
return mode->one;
}
+tarval *
+get_mode_minus_one (ir_mode *mode)
+{
+ ANNOUNCE();
+ assert(mode);
+ assert(get_mode_modecode(mode) < num_modes);
+ assert(mode_is_data(mode));
+
+ return mode->minus_one;
+}
+
tarval *
get_mode_infinite(ir_mode *mode)
{
assert(get_mode_modecode(mode) < num_modes);
assert(mode_is_float(mode));
- return get_tarval_inf(mode);
+ return get_tarval_plus_inf(mode);
}
tarval *
int
is_mode (void *thing) {
- assert(thing);
if (get_kind(thing) == k_ir_mode)
return 1;
else
int
(mode_is_signed)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_signed(mode);
+ return _mode_is_signed(mode);
}
int
(mode_is_float)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_float(mode);
+ return _mode_is_float(mode);
}
int
(mode_is_int)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_int(mode);
+ return _mode_is_int(mode);
}
int
(mode_is_character)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_character(mode);
+ return _mode_is_character(mode);
}
int
(mode_is_reference)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_reference(mode);
+ return _mode_is_reference(mode);
}
int
(mode_is_num)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_num(mode);
+ return _mode_is_num(mode);
}
int
(mode_is_numP)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_numP(mode);
+ return _mode_is_numP(mode);
}
int
(mode_is_data)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_data(mode);
+ return _mode_is_data(mode);
}
int
(mode_is_datab)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_datab(mode);
+ return _mode_is_datab(mode);
}
int
(mode_is_dataM)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_dataM(mode);
+ return _mode_is_dataM(mode);
}
int
(mode_is_float_vector)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_float_vector(mode);
+ return _mode_is_float_vector(mode);
}
int
(mode_is_int_vector)(const ir_mode *mode) {
ANNOUNCE();
- return __mode_is_int_vector(mode);
+ return _mode_is_int_vector(mode);
}
/* Returns true if sm can be converted to lm without loss. */
return 0;
}
-/* ** initialization ** */
+/* initialization, build the default modes */
void
init_mode (void)
{
/* Internal Modes */
newmode.arithmetic = irma_none;
newmode.size = 0;
- newmode.align = 0;
newmode.sign = 0;
newmode.modulo_shift = 0;
newmode.vector_elem = 0;
newmode.sort = irms_control_flow;
/* Basic Block */
- newmode.name = id_from_str("BB", 2);
+ newmode.name = new_id_from_chars("BB", 2);
newmode.code = irm_BB;
mode_BB = register_mode(&newmode);
/* eXecution */
- newmode.name = id_from_str("X", 1);
+ newmode.name = new_id_from_chars("X", 1);
newmode.code = irm_X;
mode_X = register_mode(&newmode);
newmode.sort = irms_memory;
/* Memory */
- newmode.name = id_from_str("M", 1);
+ newmode.name = new_id_from_chars("M", 1);
newmode.code = irm_M;
mode_M = register_mode(&newmode);
newmode.sort = irms_auxiliary,
/* Tuple */
- newmode.name = id_from_str("T", 1);
+ newmode.name = new_id_from_chars("T", 1);
newmode.code = irm_T;
mode_T = register_mode(&newmode);
/* ANY */
- newmode.name = id_from_str("ANY", 3);
+ newmode.name = new_id_from_chars("ANY", 3);
newmode.code = irm_ANY;
mode_ANY = register_mode(&newmode);
/* BAD */
- newmode.name = id_from_str("BAD", 3);
+ newmode.name = new_id_from_chars("BAD", 3);
newmode.code = irm_BAD;
mode_BAD = register_mode(&newmode);
newmode.sort = irms_internal_boolean;
/* boolean */
- newmode.name = id_from_str("b", 1);
+ newmode.name = new_id_from_chars("b", 1);
newmode.code = irm_b;
mode_b = register_mode(&newmode);
newmode.vector_elem = 1;
/* Float Number Modes */
- newmode.sort = irms_float_number;
+ newmode.sort = irms_float_number;
newmode.arithmetic = irma_ieee754;
/* float */
- newmode.name = id_from_str("F", 1);
+ newmode.name = new_id_from_chars("F", 1);
newmode.code = irm_F;
newmode.sign = 1;
- newmode.align = 4;
newmode.size = 32;
mode_F = register_mode(&newmode);
/* double */
- newmode.name = id_from_str("D", 1);
+ newmode.name = new_id_from_chars("D", 1);
newmode.code = irm_D;
newmode.sign = 1;
- newmode.align = 4;
newmode.size = 64;
mode_D = register_mode(&newmode);
/* extended */
- newmode.name = id_from_str("E", 1);
+ newmode.name = new_id_from_chars("E", 1);
newmode.code = irm_E;
newmode.sign = 1;
- newmode.align = 4;
newmode.size = 80;
mode_E = register_mode(&newmode);
/* Integer Number Modes */
- newmode.sort = irms_int_number;
- newmode.arithmetic = irma_twos_complement;
+ newmode.sort = irms_int_number;
+ newmode.arithmetic = irma_twos_complement;
/* signed byte */
- newmode.name = id_from_str("Bs", 2);
- newmode.code = irm_Bs;
- newmode.sign = 1;
- newmode.align = 1;
- newmode.size = 8;
+ newmode.name = new_id_from_chars("Bs", 2);
+ newmode.code = irm_Bs;
+ newmode.sign = 1;
+ newmode.size = 8;
newmode.modulo_shift = 32;
mode_Bs = register_mode(&newmode);
/* unsigned byte */
- newmode.name = id_from_str("Bu", 2);
- newmode.code = irm_Bu;
- newmode.arithmetic = irma_twos_complement;
- newmode.sign = 0;
- newmode.align = 1;
- newmode.size = 8;
+ newmode.name = new_id_from_chars("Bu", 2);
+ newmode.code = irm_Bu;
+ newmode.arithmetic = irma_twos_complement;
+ newmode.sign = 0;
+ newmode.size = 8;
newmode.modulo_shift = 32;
mode_Bu = register_mode(&newmode);
/* signed short integer */
- newmode.name = id_from_str("Hs", 2);
- newmode.code = irm_Hs;
- newmode.sign = 1;
- newmode.align = 2;
- newmode.size = 16;
+ newmode.name = new_id_from_chars("Hs", 2);
+ newmode.code = irm_Hs;
+ newmode.sign = 1;
+ newmode.size = 16;
newmode.modulo_shift = 32;
mode_Hs = register_mode(&newmode);
/* unsigned short integer */
- newmode.name = id_from_str("Hu", 2);
- newmode.code = irm_Hu;
- newmode.sign = 0;
- newmode.align = 2;
- newmode.size = 16;
+ newmode.name = new_id_from_chars("Hu", 2);
+ newmode.code = irm_Hu;
+ newmode.sign = 0;
+ newmode.size = 16;
newmode.modulo_shift = 32;
mode_Hu = register_mode(&newmode);
/* signed integer */
- newmode.name = id_from_str("Is", 2);
- newmode.code = irm_Is;
- newmode.sign = 1;
- newmode.align = 4;
- newmode.size = 32;
+ newmode.name = new_id_from_chars("Is", 2);
+ newmode.code = irm_Is;
+ newmode.sign = 1;
+ newmode.size = 32;
newmode.modulo_shift = 32;
mode_Is = register_mode(&newmode);
/* unsigned integer */
- newmode.name = id_from_str("Iu", 2);
- newmode.code = irm_Iu;
- newmode.sign = 0;
- newmode.align = 4;
- newmode.size = 32;
+ newmode.name = new_id_from_chars("Iu", 2);
+ newmode.code = irm_Iu;
+ newmode.sign = 0;
+ newmode.size = 32;
newmode.modulo_shift = 32;
mode_Iu = register_mode(&newmode);
/* signed long integer */
- newmode.name = id_from_str("Ls", 2);
- newmode.code = irm_Ls;
- newmode.sign = 1;
- newmode.align = 4;
- newmode.size = 64;
+ newmode.name = new_id_from_chars("Ls", 2);
+ newmode.code = irm_Ls;
+ newmode.sign = 1;
+ newmode.size = 64;
newmode.modulo_shift = 64;
mode_Ls = register_mode(&newmode);
/* unsigned long integer */
- newmode.name = id_from_str("Lu", 2);
- newmode.code = irm_Lu;
- newmode.sign = 0;
- newmode.align = 4;
- newmode.size = 64;
+ newmode.name = new_id_from_chars("Lu", 2);
+ newmode.code = irm_Lu;
+ newmode.sign = 0;
+ newmode.size = 64;
newmode.modulo_shift = 64;
mode_Lu = register_mode(&newmode);
/* Character Modes */
- newmode.sort = irms_character;
- newmode.arithmetic = irma_none;
+ newmode.sort = irms_character;
+ newmode.arithmetic = irma_twos_complement;
+ newmode.modulo_shift = 0;
/* Character */
- newmode.name = id_from_str("C", 1);
- newmode.code = irm_C;
- newmode.sign = 0;
- newmode.align = 1;
- newmode.size = 8;
- newmode.modulo_shift = 32;
+ newmode.name = new_id_from_chars("C", 1);
+ newmode.code = irm_C;
+ newmode.sign = 0;
+ newmode.size = 8;
mode_C = register_mode(&newmode);
/* Unicode character */
- newmode.name = id_from_str("U", 1);
- newmode.code = irm_U;
- newmode.sign = 0;
- newmode.align = 2;
- newmode.size = 16;
- newmode.modulo_shift = 32;
+ newmode.name = new_id_from_chars("U", 1);
+ newmode.code = irm_U;
+ newmode.sign = 0;
+ newmode.size = 16;
mode_U = register_mode(&newmode);
newmode.arithmetic = irma_twos_complement;
/* pointer */
- newmode.name = id_from_str("P", 1);
- newmode.code = irm_P;
- newmode.sign = 0;
- newmode.align = 4;
- newmode.size = 32;
+ newmode.name = new_id_from_chars("P", 1);
+ newmode.code = irm_P;
+ newmode.sign = 0;
+ newmode.size = 32;
newmode.modulo_shift = 0;
mode_P = register_mode(&newmode);
- /* set the machine specific modes to the predifined ones */
- mode_P_mach = mode_P;
+ /* set the machine specific modes to the predefined ones */
+ mode_P_code = mode_P;
+ mode_P_data = mode_P;
}
+/* find a signed mode for an unsigned integer mode */
+ir_mode *find_unsigned_mode(const ir_mode *mode) {
+ ir_mode n = *mode;
+
+ if (mode->sort != irms_int_number);
+ n.sign = 0;
+ return find_mode(&n);
+}
+
+/* find an unsigned mode for a signed integer mode */
+ir_mode *find_signed_mode(const ir_mode *mode) {
+ ir_mode n = *mode;
+
+ assert(mode->sort == irms_int_number);
+ n.sign = 1;
+ return find_mode(&n);
+}
+
+/* finds a integer mode with 2*n bits for an integer mode with n bits. */
+ir_mode *find_double_bits_int_mode(const ir_mode *mode) {
+ ir_mode n = *mode;
+
+ assert(mode->sort == irms_int_number && mode->arithmetic == irma_twos_complement);
+
+ n.size = 2*mode->size;
+ return find_mode(&n);
+}
+
+/*
+ * Returns non-zero if the given mode honors signed zero's, i.e.,
+ * a +0 and a -0 exists and handled differently.
+ */
+int mode_honor_signed_zeros(const ir_mode *mode)
+{
+ /* for floating point, we know that IEEE 754 has +0 and -0,
+ * but always handles it identical.
+ */
+ if (mode->sort == irms_float_number)
+ return mode->arithmetic == irma_ieee754 ? 0 : 1;
+ return 0;
+}
+
+/*
+ * Returns non-zero if the given mode might overflow on unary Minus.
+ *
+ * This does NOT happen on IEEE 754.
+ */
+int mode_overflow_on_unary_Minus(const ir_mode *mode)
+{
+ if (mode->sort == irms_float_number)
+ return mode->arithmetic == irma_ieee754 ? 0 : 1;
+ return 1;
+}
+
+/*
+ * Returns non-zero if the mode has a reversed wrap-aound
+ * logic, especially (a + x) - x == a.
+ *
+ * This is normally true for integer modes, not for floating
+ * point modes.
+ */
+int mode_wrap_around(const ir_mode *mode) {
+ /* FIXME: better would be an extra mode property */
+ return mode_is_int(mode);
+}
void finish_mode(void) {
obstack_free(&modes, 0);
- mode_T = NULL;
- mode_X = NULL;
- mode_M = NULL;
- mode_BB = NULL;
+ mode_T = NULL;
+ mode_X = NULL;
+ mode_M = NULL;
+ mode_BB = NULL;
mode_ANY = NULL;
mode_BAD = NULL;
- mode_F = NULL;
- mode_D = NULL;
- mode_E = NULL;
-
- mode_Bs = NULL;
- mode_Bu = NULL;
- mode_Hs = NULL;
- mode_Hu = NULL;
- mode_Is = NULL;
- mode_Iu = NULL;
- mode_Ls = NULL;
- mode_Lu = NULL;
-
- mode_C = NULL;
- mode_U = NULL;
- mode_b = NULL;
- mode_P = NULL;
-
- mode_P_mach = NULL;
+ mode_F = NULL;
+ mode_D = NULL;
+ mode_E = NULL;
+
+ mode_Bs = NULL;
+ mode_Bu = NULL;
+ mode_Hs = NULL;
+ mode_Hu = NULL;
+ mode_Is = NULL;
+ mode_Iu = NULL;
+ mode_Ls = NULL;
+ mode_Lu = NULL;
+
+ mode_C = NULL;
+ mode_U = NULL;
+ mode_b = NULL;
+ mode_P = NULL;
+
+ mode_P_code = NULL;
+ mode_P_data = NULL;
}
projects / libfirm / blobdiff