/*
- * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved.
+ * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
*
* This file is part of libFirm.
*
# include "obst.h"
# include "irhooks.h"
# include "irtools.h"
+# include "array.h"
-/* * *
- * local values
- * * */
-
-
-/** dynamic array to hold all modes */
+/** Obstack to hold all modes. */
static struct obstack modes;
-/** number of defined modes */
+/** Number of defined modes. */
static int num_modes = 0;
-/* * *
- * local functions
- * * */
+/** The list of all currently existing modes. */
+static ir_mode **mode_list;
/**
* Compare modes that don't need to have their code field
*
* TODO: Add other fields
**/
-INLINE static int modes_are_equal(const ir_mode *m, const ir_mode *n) {
+static INLINE int modes_are_equal(const ir_mode *m, const ir_mode *n) {
if (m == n) return 1;
if (m->sort == n->sort &&
m->arithmetic == n->arithmetic &&
return 0;
}
-/*
- * calculates the next obstack address
- */
-static void *next_obstack_adr(struct obstack *o, void *p, size_t s) {
- PTR_INT_TYPE adr = PTR_TO_INT((char *)p);
- int mask = obstack_alignment_mask(o);
-
- adr += s + mask;
-
- return INT_TO_PTR(adr & ~mask);
-}
-
/**
* searches the modes obstack for the given mode and returns
* a pointer on an equal mode already in the array, NULL if
* none found
*/
static ir_mode *find_mode(const ir_mode *m) {
- ir_mode *n, *nn;
- struct _obstack_chunk *p;
-
- p = modes.chunk;
- n = (ir_mode *)p->contents;
- nn = next_obstack_adr(&modes, n, sizeof(*n));
- for (; (char *)nn <= modes.next_free;) {
- assert(is_mode(n));
+ int i;
+ for (i = ARR_LEN(mode_list) - 1; i >= 0; --i) {
+ ir_mode *n = mode_list[i];
if (modes_are_equal(n, m))
return n;
-
- n = nn;
- nn = next_obstack_adr(&modes, n, sizeof(*n));
}
+ return NULL;
+}
- for (p = p->prev; p; p = p->prev) {
- n = (ir_mode *)p->contents;
- nn = next_obstack_adr(&modes, n, sizeof(*n));
- for (; (char *)nn < p->limit;) {
- assert(is_mode(n));
- if (modes_are_equal(n, m))
- return n;
-
- n = nn;
- nn = next_obstack_adr(&modes, n, sizeof(*n));
- }
+#ifdef FIRM_STATISTICS
+/* return the mode index, only needed for statistics */
+int stat_find_mode_index(const ir_mode *m) {
+ int i;
+ for (i = ARR_LEN(mode_list) - 1; i >= 0; --i) {
+ ir_mode *n = mode_list[i];
+ if (modes_are_equal(n, m))
+ return i;
}
+ return -1;
+}
+/* return the mode for a given index, only needed for statistics */
+ir_mode *stat_mode_for_index(int idx) {
+ if (0 <= idx && idx < ARR_LEN(mode_list))
+ return mode_list[idx];
return NULL;
}
+#endif
/**
* sets special values of modes
*/
static void set_mode_values(ir_mode* mode) {
switch (get_mode_sort(mode)) {
+ case irms_reference:
case irms_int_number:
case irms_float_number:
mode->min = get_tarval_min(mode);
mode->null = get_tarval_null(mode);
mode->one = get_tarval_one(mode);
mode->minus_one = get_tarval_minus_one(mode);
+ if(get_mode_sort(mode) != irms_float_number) {
+ mode->all_one = get_tarval_all_one(mode);
+ } else {
+ mode->all_one = tarval_bad;
+ }
break;
case irms_internal_boolean:
mode->null = tarval_b_false;
mode->one = tarval_b_true;
mode->minus_one = tarval_bad;
- break;
-
- case irms_reference:
- mode->min = tarval_bad;
- mode->max = tarval_bad;
- mode->null = get_tarval_null(mode);
- mode->one = tarval_bad;
- mode->minus_one = tarval_bad;
+ mode->all_one = tarval_b_true;
break;
case irms_auxiliary:
/* copy mode struct to modes array */
mode = (ir_mode *)obstack_copy(&modes, new_mode, sizeof(*mode));
+ ARR_APP1(ir_mode*, mode_list, mode);
mode->kind = k_ir_mode;
if (num_modes >= irm_max) {
/*
* Creates a new mode.
*/
-ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int sign,
- mode_arithmetic arithmetic, unsigned int modulo_shift)
+ir_mode *new_ir_mode(const char *name, ir_mode_sort sort, int bit_size, int sign,
+ ir_mode_arithmetic arithmetic, unsigned int modulo_shift)
{
ir_mode mode_tmpl;
ir_mode *mode = NULL;
/*
* Creates a new vector mode.
*/
-ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int sign,
- mode_arithmetic arithmetic, unsigned int modulo_shift)
+ir_mode *new_ir_vector_mode(const char *name, ir_mode_sort sort, int bit_size, unsigned num_of_elem, int sign,
+ ir_mode_arithmetic arithmetic, unsigned int modulo_shift)
{
ir_mode mode_tmpl;
ir_mode *mode = NULL;
}
/* Functions for the direct access to all attributes of an ir_mode */
-modecode
-(get_mode_modecode)(const ir_mode *mode) {
+ir_modecode (get_mode_modecode)(const ir_mode *mode) {
return _get_mode_modecode(mode);
}
-ident *
-(get_mode_ident)(const ir_mode *mode) {
+ident *(get_mode_ident)(const ir_mode *mode) {
return _get_mode_ident(mode);
}
-const char *
-get_mode_name(const ir_mode *mode) {
+const char *get_mode_name(const ir_mode *mode) {
return get_id_str(mode->name);
}
-mode_sort
-(get_mode_sort)(const ir_mode* mode) {
+ir_mode_sort (get_mode_sort)(const ir_mode* mode) {
return _get_mode_sort(mode);
}
-int
-(get_mode_size_bits)(const ir_mode *mode) {
+unsigned (get_mode_size_bits)(const ir_mode *mode) {
return _get_mode_size_bits(mode);
}
-int
-(get_mode_size_bytes)(const ir_mode *mode) {
+unsigned (get_mode_size_bytes)(const ir_mode *mode) {
return _get_mode_size_bytes(mode);
}
-int
-(get_mode_sign)(const ir_mode *mode) {
+int (get_mode_sign)(const ir_mode *mode) {
return _get_mode_sign(mode);
}
-mode_arithmetic
-(get_mode_arithmetic)(const ir_mode *mode) {
+ir_mode_arithmetic (get_mode_arithmetic)(const ir_mode *mode) {
return get_mode_arithmetic(mode);
}
* whether shift applies modulo to value of bits to shift. Asserts
* if mode is not irms_int_number.
*/
-unsigned int
-(get_mode_modulo_shift)(const ir_mode *mode) {
+unsigned int (get_mode_modulo_shift)(const ir_mode *mode) {
return _get_mode_modulo_shift(mode);
}
-unsigned int
-(get_mode_n_vector_elems)(const ir_mode *mode) {
+unsigned int (get_mode_n_vector_elems)(const ir_mode *mode) {
return _get_mode_vector_elems(mode);
}
-void *
-(get_mode_link)(const ir_mode *mode) {
+void *(get_mode_link)(const ir_mode *mode) {
return _get_mode_link(mode);
}
-void
-(set_mode_link)(ir_mode *mode, void *l) {
+void (set_mode_link)(ir_mode *mode, void *l) {
_set_mode_link(mode, l);
}
-tarval *
-get_mode_min(ir_mode *mode) {
+tarval *get_mode_min(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < (modecode) num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_data(mode));
return mode->min;
}
-tarval *
-get_mode_max(ir_mode *mode) {
+tarval *get_mode_max(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < (modecode) num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_data(mode));
return mode->max;
}
-tarval *
-get_mode_null(ir_mode *mode) {
+tarval *get_mode_null(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < (modecode) num_modes);
- assert(mode_is_data(mode));
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+ assert(mode_is_datab(mode));
return mode->null;
}
-tarval *
-get_mode_one(ir_mode *mode) {
+tarval *get_mode_one(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < (modecode) num_modes);
- assert(mode_is_data(mode));
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+ assert(mode_is_datab(mode));
return mode->one;
}
-tarval *
-get_mode_minus_one(ir_mode *mode) {
+tarval *get_mode_minus_one(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < (modecode) num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_data(mode));
return mode->minus_one;
}
-tarval *
-get_mode_infinite(ir_mode *mode) {
+tarval *get_mode_all_one(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < (modecode) num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
+ assert(mode_is_datab(mode));
+ return mode->all_one;
+}
+
+tarval *get_mode_infinite(ir_mode *mode) {
+ assert(mode);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_float(mode));
return get_tarval_plus_inf(mode);
}
-tarval *
-get_mode_NAN(ir_mode *mode) {
+tarval *get_mode_NAN(ir_mode *mode) {
assert(mode);
- assert(get_mode_modecode(mode) < (modecode) num_modes);
+ assert(get_mode_modecode(mode) < (ir_modecode) num_modes);
assert(mode_is_float(mode));
return get_tarval_nan(mode);
}
-int
-is_mode(void *thing) {
+int is_mode(void *thing) {
if (get_kind(thing) == k_ir_mode)
return 1;
else
return 0;
}
-int
-(mode_is_signed)(const ir_mode *mode) {
+int (mode_is_signed)(const ir_mode *mode) {
return _mode_is_signed(mode);
}
-int
-(mode_is_float)(const ir_mode *mode) {
+int (mode_is_float)(const ir_mode *mode) {
return _mode_is_float(mode);
}
-int
-(mode_is_int)(const ir_mode *mode) {
+int (mode_is_int)(const ir_mode *mode) {
return _mode_is_int(mode);
}
-int
-(mode_is_reference)(const ir_mode *mode) {
+int (mode_is_reference)(const ir_mode *mode) {
return _mode_is_reference(mode);
}
-int
-(mode_is_num)(const ir_mode *mode) {
+int (mode_is_num)(const ir_mode *mode) {
return _mode_is_num(mode);
}
-int
-(mode_is_data)(const ir_mode *mode) {
+int (mode_is_data)(const ir_mode *mode) {
return _mode_is_data(mode);
}
-int
-(mode_is_datab)(const ir_mode *mode) {
+int (mode_is_datab)(const ir_mode *mode) {
return _mode_is_datab(mode);
}
-int
-(mode_is_dataM)(const ir_mode *mode) {
+int (mode_is_dataM)(const ir_mode *mode) {
return _mode_is_dataM(mode);
}
-int
-(mode_is_float_vector)(const ir_mode *mode) {
+int (mode_is_float_vector)(const ir_mode *mode) {
return _mode_is_float_vector(mode);
}
-int
-(mode_is_int_vector)(const ir_mode *mode) {
+int (mode_is_int_vector)(const ir_mode *mode) {
return _mode_is_int_vector(mode);
}
/* Returns true if sm can be converted to lm without loss. */
-int
-smaller_mode(const ir_mode *sm, const ir_mode *lm) {
+int smaller_mode(const ir_mode *sm, const ir_mode *lm) {
int sm_bits, lm_bits;
assert(sm);
case irms_int_number:
switch (get_mode_sort(lm)) {
case irms_int_number:
+ if(get_mode_arithmetic(sm) != get_mode_arithmetic(lm))
+ return 0;
+
+ /* only two complement implemented */
+ assert(get_mode_arithmetic(sm)==irma_twos_complement);
+
/* integers are convertable if
* - both have the same sign and lm is the larger one
* - lm is the signed one and is at least two bits larger
* (one for the sign, one for the highest bit of sm)
* - sm & lm are two_complement and lm has greater or equal number of bits
*/
- if ( get_mode_arithmetic(sm) == get_mode_arithmetic(lm)
- && get_mode_arithmetic(sm) == irma_twos_complement) {
- return lm_bits >= sm_bits;
- } else if (mode_is_signed(sm)) {
- if ( mode_is_signed(lm) && (lm_bits >= sm_bits) )
- return 1;
- } else if (mode_is_signed(lm)) {
- if (lm_bits > sm_bits + 1)
- return 1;
- } else if (lm_bits >= sm_bits) {
- return 1;
+ if(mode_is_signed(sm)) {
+ if(!mode_is_signed(lm))
+ return 0;
+ return sm_bits <= lm_bits;
+ } else {
+ if(mode_is_signed(lm)) {
+ return sm_bits < lm_bits;
+ }
+ return sm_bits <= lm_bits;
}
break;
}
/* initialization, build the default modes */
-void
-init_mode (void) {
+void init_mode(void) {
ir_mode newmode;
obstack_init(&modes);
+ mode_list = NEW_ARR_F(ir_mode*, 0);
num_modes = 0;
/* initialize predefined modes */
void finish_mode(void) {
obstack_free(&modes, 0);
+ DEL_ARR_F(mode_list);
mode_T = NULL;
mode_X = NULL;
projects / libfirm / blobdiff