3 * File name: ir/ir/irmode.c
4 * Purpose: Data modes of operations.
5 * Author: Martin Trapp, Christian Schaefer
6 * Modified by: Goetz Lindenmaier, Mathias Heil
9 * Copyright: (c) 1998-2003 Universität Karlsruhe
10 * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
23 # include "irmode_t.h"
29 static long long count = 0;
30 # define ANNOUNCE() printf(__FILE__": call no. %lld (%s)\n", count++, __FUNCTION__)
32 # define ANNOUNCE() ((void)0)
40 /** dynamic array to hold all modes */
41 static struct obstack modes;
43 /** number of defined modes */
51 * Compare modes that don't need to have their code field
54 * TODO: Add other fields
56 INLINE static int modes_are_equal(const ir_mode *m, const ir_mode *n)
59 if (m->sort == n->sort &&
60 m->arithmetic == n->arithmetic &&
62 m->align == n->align &&
64 m->modulo_shift == n->modulo_shift &&
65 m->vector_elem == n->vector_elem)
72 * calculates the next obstack address
74 static void *next_obstack_adr(struct obstack *o, void *p, size_t s)
76 PTR_INT_TYPE adr = __PTR_TO_INT((char *)p);
77 int mask = obstack_alignment_mask(o);
81 return __INT_TO_PTR(adr & ~mask);
85 * searches the modes obstack for the given mode and returns
86 * a pointer on an equal mode already in the array, NULL if
89 static ir_mode *find_mode(const ir_mode *m)
92 struct _obstack_chunk *p;
95 n = (ir_mode *)p->contents;
96 nn = next_obstack_adr(&modes, n, sizeof(*n));
97 for (; (char *)nn <= modes.next_free;) {
99 if (modes_are_equal(n, m))
103 nn = next_obstack_adr(&modes, n, sizeof(*n));
106 for (p = p->prev; p; p = p->prev) {
107 n = (ir_mode *)p->contents;
108 nn = next_obstack_adr(&modes, n, sizeof(*n));
109 for (; (char *)nn < p->limit;) {
111 if (modes_are_equal(n, m))
115 nn = next_obstack_adr(&modes, n, sizeof(*n));
123 * sets special values of modes
125 static void set_mode_values(ir_mode* mode)
127 switch (get_mode_sort(mode))
130 case irms_int_number:
131 case irms_float_number:
132 mode->min = get_tarval_min(mode);
133 mode->max = get_tarval_max(mode);
134 mode->null = get_tarval_null(mode);
135 mode->one = get_tarval_one(mode);
138 case irms_internal_boolean:
139 mode->min = tarval_b_false;
140 mode->max = tarval_b_true;
141 mode->null = tarval_b_false;
142 mode->one = tarval_b_true;
146 mode->min = tarval_bad;
147 mode->max = tarval_bad;
148 mode->null = (get_mode_modecode(mode) == irm_P) ? tarval_P_void : tarval_bad;
149 mode->one = tarval_bad;
154 case irms_control_flow:
155 mode->min = tarval_bad;
156 mode->max = tarval_bad;
157 mode->null = tarval_bad;
158 mode->one = tarval_bad;
164 * globals defined in irmode.h
167 /* --- Predefined modes --- */
169 /* FIRM internal modes: */
177 /* predefined numerical modes: */
178 ir_mode *mode_F; /* float */
179 ir_mode *mode_D; /* double */
180 ir_mode *mode_E; /* long double */
182 ir_mode *mode_Bs; /* integral values, signed and unsigned */
183 ir_mode *mode_Bu; /* 8 bit */
184 ir_mode *mode_Hs; /* 16 bit */
186 ir_mode *mode_Is; /* 32 bit */
188 ir_mode *mode_Ls; /* 64 bit */
196 /* machine specific modes */
197 ir_mode *mode_P_mach; /* machine specific pointer mode */
200 * functions defined in irmode.h
203 /* JNI access functions */
204 INLINE ir_mode *get_modeT(void) { ANNOUNCE(); return mode_T; }
205 INLINE ir_mode *get_modeF(void) { ANNOUNCE(); return mode_F; }
206 INLINE ir_mode *get_modeD(void) { ANNOUNCE(); return mode_D; }
207 INLINE ir_mode *get_modeE(void) { ANNOUNCE(); return mode_E; }
208 INLINE ir_mode *get_modeBs(void) { ANNOUNCE(); return mode_Bs; }
209 INLINE ir_mode *get_modeBu(void) { ANNOUNCE(); return mode_Bu; }
210 INLINE ir_mode *get_modeHs(void) { ANNOUNCE(); return mode_Hs; }
211 INLINE ir_mode *get_modeHu(void) { ANNOUNCE(); return mode_Hu; }
212 INLINE ir_mode *get_modeIs(void) { ANNOUNCE(); return mode_Is; }
213 INLINE ir_mode *get_modeIu(void) { ANNOUNCE(); return mode_Iu; }
214 INLINE ir_mode *get_modeLs(void) { ANNOUNCE(); return mode_Ls; }
215 INLINE ir_mode *get_modeLu(void) { ANNOUNCE(); return mode_Lu; }
216 INLINE ir_mode *get_modeC(void) { ANNOUNCE(); return mode_C; }
217 INLINE ir_mode *get_modeU(void) { ANNOUNCE(); return mode_U; }
218 INLINE ir_mode *get_modeb(void) { ANNOUNCE(); return mode_b; }
219 INLINE ir_mode *get_modeP(void) { ANNOUNCE(); return mode_P; }
220 INLINE ir_mode *get_modeX(void) { ANNOUNCE(); return mode_X; }
221 INLINE ir_mode *get_modeM(void) { ANNOUNCE(); return mode_M; }
222 INLINE ir_mode *get_modeBB(void) { ANNOUNCE(); return mode_BB; }
223 INLINE ir_mode *get_modeANY(void) { ANNOUNCE(); return mode_ANY; }
224 INLINE ir_mode *get_modeBAD(void) { ANNOUNCE(); return mode_BAD; }
227 ir_mode *(get_modeP_mach)(void) {
229 return __get_modeP_mach();
232 void (set_modeP_mach)(ir_mode *p) {
238 * Registers a new mode if not defined yet, else returns
239 * the "equivalent" one.
241 static ir_mode *register_mode(const ir_mode* new_mode)
243 ir_mode *mode = NULL;
248 /* copy mode struct to modes array */
249 mode = (ir_mode*)obstack_copy(&modes, new_mode, sizeof(ir_mode));
251 mode->kind = k_ir_mode;
252 if(num_modes>=irm_max) mode->code = num_modes;
255 set_mode_values(mode);
261 * Creates a new mode.
263 ir_mode *new_ir_mode(const char *name, mode_sort sort, int bit_size, int align, int sign,
264 mode_arithmetic arithmetic, unsigned int modulo_shift )
269 mode_tmpl.name = new_id_from_str(name);
270 mode_tmpl.sort = sort;
271 mode_tmpl.size = bit_size;
272 mode_tmpl.align = align;
273 mode_tmpl.sign = sign ? 1 : 0;
274 mode_tmpl.modulo_shift = (mode_tmpl.sort == irms_int_number) ? modulo_shift : 0;
275 mode_tmpl.vector_elem = 1;
276 mode_tmpl.arithmetic = arithmetic;
277 mode_tmpl.link = NULL;
278 mode_tmpl.tv_priv = NULL;
280 mode = find_mode(&mode_tmpl);
290 case irms_control_flow:
292 case irms_internal_boolean:
293 assert(0 && "internal modes cannot be user defined");
296 case irms_float_number:
297 case irms_int_number:
300 return register_mode(&mode_tmpl);
302 return NULL; /* to shut up gcc */
306 * Creates a new vector mode.
308 ir_mode *new_ir_vector_mode(const char *name, mode_sort sort, int bit_size, unsigned num_of_elem, int align, int sign,
309 mode_arithmetic arithmetic, unsigned int modulo_shift )
314 mode_tmpl.name = new_id_from_str(name);
315 mode_tmpl.sort = sort;
316 mode_tmpl.size = bit_size * num_of_elem;
317 mode_tmpl.align = align;
318 mode_tmpl.sign = sign ? 1 : 0;
319 mode_tmpl.modulo_shift = (mode_tmpl.sort == irms_int_number) ? modulo_shift : 0;
320 mode_tmpl.vector_elem = num_of_elem;
321 mode_tmpl.arithmetic = arithmetic;
322 mode_tmpl.link = NULL;
323 mode_tmpl.tv_priv = NULL;
325 mode = find_mode(&mode_tmpl);
329 if (num_of_elem <= 1) {
330 assert(0 && "vector modes should have at least 2 elements");
338 case irms_control_flow:
340 case irms_internal_boolean:
341 assert(0 && "internal modes cannot be user defined");
346 assert(0 && "only integer and floating point modes can be vectorized");
349 case irms_float_number:
350 assert(0 && "not yet implemented");
353 case irms_int_number:
354 return register_mode(&mode_tmpl);
356 return NULL; /* to shut up gcc */
359 /* Functions for the direct access to all attributes od a ir_mode */
361 (get_mode_modecode)(const ir_mode *mode)
364 return __get_mode_modecode(mode);
368 (get_mode_ident)(const ir_mode *mode)
371 return __get_mode_ident(mode);
375 get_mode_name(const ir_mode *mode)
378 return get_id_str(mode->name);
382 (get_mode_sort)(const ir_mode* mode)
385 return __get_mode_sort(mode);
389 (get_mode_size_bits)(const ir_mode *mode)
392 return __get_mode_size_bits(mode);
396 (get_mode_size_bytes)(const ir_mode *mode) {
398 return __get_mode_size_bytes(mode);
402 (get_mode_align)(const ir_mode *mode)
405 return __get_mode_align(mode);
409 (get_mode_sign)(const ir_mode *mode)
412 return __get_mode_sign(mode);
416 (get_mode_arithmetic)(const ir_mode *mode)
419 return get_mode_arithmetic(mode);
423 /* Attribute modulo shift specifies for modes of kind irms_int_number
424 * whether shift applies modulo to value of bits to shift. Asserts
425 * if mode is not irms_int_number.
428 (get_mode_modulo_shift)(const ir_mode *mode) {
429 return __get_mode_modulo_shift(mode);
433 (get_mode_vector_elems)(const ir_mode *mode) {
434 return __get_mode_vector_elems(mode);
438 (get_mode_link)(const ir_mode *mode)
441 return __get_mode_link(mode);
445 (set_mode_link)(ir_mode *mode, void *l)
447 __set_mode_link(mode, l);
451 get_mode_min (ir_mode *mode)
455 assert(get_mode_modecode(mode) < num_modes);
456 assert(mode_is_data(mode));
462 get_mode_max (ir_mode *mode)
466 assert(get_mode_modecode(mode) < num_modes);
467 assert(mode_is_data(mode));
473 get_mode_null (ir_mode *mode)
477 assert(get_mode_modecode(mode) < num_modes);
478 assert(mode_is_data(mode));
484 get_mode_one (ir_mode *mode)
488 assert(get_mode_modecode(mode) < num_modes);
489 assert(mode_is_data(mode));
495 get_mode_infinite(ir_mode *mode)
499 assert(get_mode_modecode(mode) < num_modes);
500 assert(mode_is_float(mode));
502 return get_tarval_inf(mode);
506 get_mode_NAN(ir_mode *mode)
510 assert(get_mode_modecode(mode) < num_modes);
511 assert(mode_is_float(mode));
513 return get_tarval_nan(mode);
517 is_mode (void *thing) {
519 if (get_kind(thing) == k_ir_mode)
526 (mode_is_signed)(const ir_mode *mode) {
528 return __mode_is_signed(mode);
532 (mode_is_float)(const ir_mode *mode) {
534 return __mode_is_float(mode);
538 (mode_is_int)(const ir_mode *mode) {
540 return __mode_is_int(mode);
544 (mode_is_character)(const ir_mode *mode) {
546 return __mode_is_character(mode);
550 (mode_is_reference)(const ir_mode *mode) {
552 return __mode_is_reference(mode);
556 (mode_is_num)(const ir_mode *mode) {
558 return __mode_is_num(mode);
562 (mode_is_numP)(const ir_mode *mode) {
564 return __mode_is_numP(mode);
568 (mode_is_data)(const ir_mode *mode) {
570 return __mode_is_data(mode);
574 (mode_is_datab)(const ir_mode *mode) {
576 return __mode_is_datab(mode);
580 (mode_is_dataM)(const ir_mode *mode) {
582 return __mode_is_dataM(mode);
586 (mode_is_float_vector)(const ir_mode *mode) {
588 return __mode_is_float_vector(mode);
592 (mode_is_int_vector)(const ir_mode *mode) {
594 return __mode_is_int_vector(mode);
597 /* Returns true if sm can be converted to lm without loss. */
599 smaller_mode(const ir_mode *sm, const ir_mode *lm)
601 int sm_bits, lm_bits;
607 if (sm == lm) return 1;
609 sm_bits = get_mode_size_bits(sm);
610 lm_bits = get_mode_size_bits(lm);
612 switch(get_mode_sort(sm))
614 case irms_int_number:
615 switch(get_mode_sort(lm))
617 case irms_int_number:
618 /* integers are convertable if
619 * - both have the same sign and lm is the larger one
620 * - lm is the signed one and is at least two bits larger
621 * (one for the sign, one for the highest bit of sm)
622 * - sm & lm are two_complement and lm has greater or equal number of bits
624 if ( get_mode_arithmetic(sm) == get_mode_arithmetic(lm)
625 && get_mode_arithmetic(sm) == irma_twos_complement) {
626 return lm_bits >= sm_bits;
628 else if (mode_is_signed(sm))
630 if ( mode_is_signed(lm) && (lm_bits >= sm_bits) )
633 else if (mode_is_signed(lm))
635 if (lm_bits > sm_bits + 1)
638 else if (lm_bits >= sm_bits)
644 case irms_float_number:
645 /* int to float works if the float is large enough */
653 case irms_float_number:
654 if (get_mode_arithmetic(sm) == get_mode_arithmetic(lm)) {
655 if ( (get_mode_sort(lm) == irms_float_number)
656 && (get_mode_size_bits(lm) >= get_mode_size_bits(sm)) )
662 /* do exist machines out there with different pointer lenghts ?*/
673 /* ** initialization ** */
679 /* init flexible array */
681 obstack_init(&modes);
684 /* initialize predefined modes */
687 newmode.arithmetic = irma_none;
691 newmode.modulo_shift = 0;
692 newmode.vector_elem = 0;
694 newmode.tv_priv = NULL;
696 /* Control Flow Modes*/
697 newmode.sort = irms_control_flow;
700 newmode.name = id_from_str("BB", 2);
701 newmode.code = irm_BB;
703 mode_BB = register_mode(&newmode);
706 newmode.name = id_from_str("X", 1);
707 newmode.code = irm_X;
709 mode_X = register_mode(&newmode);
712 newmode.sort = irms_memory;
715 newmode.name = id_from_str("M", 1);
716 newmode.code = irm_M;
718 mode_M = register_mode(&newmode);
720 /* Auxiliary Modes */
721 newmode.sort = irms_auxiliary,
724 newmode.name = id_from_str("T", 1);
725 newmode.code = irm_T;
727 mode_T = register_mode(&newmode);
730 newmode.name = id_from_str("ANY", 3);
731 newmode.code = irm_ANY;
733 mode_ANY = register_mode(&newmode);
736 newmode.name = id_from_str("BAD", 3);
737 newmode.code = irm_BAD;
739 mode_BAD = register_mode(&newmode);
741 /* Internal Boolean Modes */
742 newmode.sort = irms_internal_boolean;
745 newmode.name = id_from_str("b", 1);
746 newmode.code = irm_b;
748 mode_b = register_mode(&newmode);
751 newmode.vector_elem = 1;
753 /* Float Number Modes */
754 newmode.sort = irms_float_number;
755 newmode.arithmetic = irma_ieee754;
758 newmode.name = id_from_str("F", 1);
759 newmode.code = irm_F;
764 mode_F = register_mode(&newmode);
767 newmode.name = id_from_str("D", 1);
768 newmode.code = irm_D;
773 mode_D = register_mode(&newmode);
776 newmode.name = id_from_str("E", 1);
777 newmode.code = irm_E;
782 mode_E = register_mode(&newmode);
784 /* Integer Number Modes */
785 newmode.sort = irms_int_number;
786 newmode.arithmetic = irma_twos_complement;
789 newmode.name = id_from_str("Bs", 2);
790 newmode.code = irm_Bs;
794 newmode.modulo_shift = 32;
796 mode_Bs = register_mode(&newmode);
799 newmode.name = id_from_str("Bu", 2);
800 newmode.code = irm_Bu;
801 newmode.arithmetic = irma_twos_complement;
805 newmode.modulo_shift = 32;
807 mode_Bu = register_mode(&newmode);
809 /* signed short integer */
810 newmode.name = id_from_str("Hs", 2);
811 newmode.code = irm_Hs;
815 newmode.modulo_shift = 32;
817 mode_Hs = register_mode(&newmode);
819 /* unsigned short integer */
820 newmode.name = id_from_str("Hu", 2);
821 newmode.code = irm_Hu;
825 newmode.modulo_shift = 32;
827 mode_Hu = register_mode(&newmode);
830 newmode.name = id_from_str("Is", 2);
831 newmode.code = irm_Is;
835 newmode.modulo_shift = 32;
837 mode_Is = register_mode(&newmode);
839 /* unsigned integer */
840 newmode.name = id_from_str("Iu", 2);
841 newmode.code = irm_Iu;
845 newmode.modulo_shift = 32;
847 mode_Iu = register_mode(&newmode);
849 /* signed long integer */
850 newmode.name = id_from_str("Ls", 2);
851 newmode.code = irm_Ls;
855 newmode.modulo_shift = 64;
857 mode_Ls = register_mode(&newmode);
859 /* unsigned long integer */
860 newmode.name = id_from_str("Lu", 2);
861 newmode.code = irm_Lu;
865 newmode.modulo_shift = 64;
867 mode_Lu = register_mode(&newmode);
869 /* Character Modes */
870 newmode.sort = irms_character;
871 newmode.arithmetic = irma_none;
874 newmode.name = id_from_str("C", 1);
875 newmode.code = irm_C;
879 newmode.modulo_shift = 32;
881 mode_C = register_mode(&newmode);
883 /* Unicode character */
884 newmode.name = id_from_str("U", 1);
885 newmode.code = irm_U;
889 newmode.modulo_shift = 32;
891 mode_U = register_mode(&newmode);
893 /* Reference Modes */
894 newmode.sort = irms_reference;
895 newmode.arithmetic = irma_twos_complement;
898 newmode.name = id_from_str("P", 1);
899 newmode.code = irm_P;
903 newmode.modulo_shift = 0;
905 mode_P = register_mode(&newmode);
907 /* set the machine specific modes to the predifined ones */
908 mode_P_mach = mode_P;
912 void finish_mode(void) {
913 obstack_free(&modes, 0);