2 * Copyright (C) 2012-2019 Free Software Foundation, Inc.
4 * This file is part of GNU lightning.
6 * GNU lightning is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU Lesser General Public License as published
8 * by the Free Software Foundation; either version 3, or (at your option)
11 * GNU lightning is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14 * License for more details.
17 * Paulo Cesar Pereira de Andrade
20 #include <lightning.h>
21 #include <lightning/jit_private.h>
23 # include <sys/mman.h>
30 # define MAP_ANON MAP_ANONYMOUS
31 # ifndef MAP_ANONYMOUS
32 # define MAP_ANONYMOUS 0
36 #define jit_regload_reload 0 /* convert to reload */
37 #define jit_regload_delete 1 /* just remove node */
38 #define jit_regload_isdead 2 /* delete and unset live bit */
43 static jit_word_t hash_data(const void*, jit_word_t);
45 #define new_pool() _new_pool(_jit)
46 static void _new_pool(jit_state_t*);
48 #define new_node(u) _new_node(_jit, u)
49 static jit_node_t *_new_node(jit_state_t*, jit_code_t);
51 #define link_node(u) _link_node(_jit, u)
52 static inline jit_node_t *_link_node(jit_state_t*, jit_node_t*);
54 #define del_node(u, v) _del_node(_jit, u, v)
55 static inline void _del_node(jit_state_t*, jit_node_t*, jit_node_t*);
57 #define free_node(u) _free_node(_jit, u)
58 static inline void _free_node(jit_state_t*, jit_node_t*);
60 #define del_label(u, v) _del_label(_jit, u, v)
61 static void _del_label(jit_state_t*, jit_node_t*, jit_node_t*);
63 #define jit_dataset() _jit_dataset(_jit)
65 _jit_dataset(jit_state_t *_jit);
67 #define jit_setup(block) _jit_setup(_jit, block)
69 _jit_setup(jit_state_t *_jit, jit_block_t *block);
71 #define jit_follow(block, todo) _jit_follow(_jit, block, todo)
73 _jit_follow(jit_state_t *_jit, jit_block_t *block, jit_bool_t *todo);
75 #define jit_update(node, live, mask) _jit_update(_jit, node, live, mask)
77 _jit_update(jit_state_t *_jit, jit_node_t *node,
78 jit_regset_t *live, jit_regset_t *mask);
80 #define thread_jumps() _thread_jumps(_jit)
82 _thread_jumps(jit_state_t *_jit);
84 #define sequential_labels() _sequential_labels(_jit)
86 _sequential_labels(jit_state_t *_jit);
88 #define split_branches() _split_branches(_jit)
90 _split_branches(jit_state_t *_jit);
92 #define shortcut_jump(prev, node) _shortcut_jump(_jit, prev, node)
94 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
96 #define redundant_jump(prev, node) _redundant_jump(_jit, prev, node)
98 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
101 reverse_jump_code(jit_code_t code);
103 #define reverse_jump(prev, node) _reverse_jump(_jit, prev, node)
105 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
107 #define redundant_store(node, jump) _redundant_store(_jit, node, jump)
109 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump);
111 #define simplify_movr(p, n, k, s) _simplify_movr(_jit, p, n, k, s)
113 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
114 jit_int32_t kind, jit_int32_t size);
116 #define simplify_movi(p, n, k, s) _simplify_movi(_jit, p, n, k, s)
118 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
119 jit_int32_t kind, jit_int32_t size);
121 #define simplify_ldxi(prev, node) _simplify_ldxi(_jit, prev, node)
123 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
125 #define simplify_stxi(prev, node) _simplify_stxi(_jit, prev, node)
127 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
129 #define simplify_spill(node, regno) _simplify_spill(_jit, node, regno)
131 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
133 #define simplify() _simplify(_jit)
135 _simplify(jit_state_t *_jit);
137 #define jit_reg_undef -1
138 #define jit_reg_static 0
139 #define jit_reg_change 1
140 #define register_change_p(n, l, r) _register_change_p(_jit, n, l, r)
142 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
145 #define spill_reglive_p(node, regno) _spill_reglive_p(_jit, node, regno)
147 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
149 #define patch_registers() _patch_registers(_jit)
151 _patch_registers(jit_state_t *_jit);
153 #define patch_register(n,l,r,p) _patch_register(_jit,n,l,r,p)
155 _patch_register(jit_state_t *jit, jit_node_t *node, jit_node_t *link,
156 jit_int32_t regno, jit_int32_t patch);
169 init_jit(const char *progname)
172 jit_init_debug(progname);
184 _jit_get_reg(jit_state_t *_jit, jit_int32_t regspec)
189 spec = regspec & ~(jit_class_chk|jit_class_nospill);
190 if (spec & jit_class_named) {
191 regno = jit_regno(spec);
192 if (jit_regset_tstbit(&_jitc->regsav, regno))
193 /* fail if register is spilled */
195 if (jit_regset_tstbit(&_jitc->regarg, regno))
196 /* fail if register is an argument to current instruction */
198 if (jit_regset_tstbit(&_jitc->reglive, regno)) {
199 if (regspec & jit_class_nospill)
200 /* fail if register is live and should not spill/reload */
204 jit_regset_setbit(&_jitc->regarg, regno);
208 assert(jit_class(spec) != 0);
211 /* search for a free register matching spec */
212 for (regno = 0; regno < _jitc->reglen; regno++) {
213 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
214 !jit_regset_tstbit(&_jitc->regarg, regno) &&
215 !jit_regset_tstbit(&_jitc->reglive, regno))
219 /* search for a register matching spec that is not an argument
220 * for the current instruction */
221 for (regno = 0; regno < _jitc->reglen; regno++) {
222 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
223 !jit_regset_tstbit(&_jitc->regsav, regno) &&
224 !jit_regset_tstbit(&_jitc->regarg, regno) &&
225 !(regspec & jit_class_nospill)) {
227 assert(_jitc->function != NULL);
228 if (spec & jit_class_gpr) {
229 if (!_jitc->function->regoff[regno]) {
230 _jitc->function->regoff[regno] =
231 jit_allocai(sizeof(jit_word_t));
235 /* emit_stxi must not need temporary registers */
236 assert(!_jitc->getreg);
239 emit_stxi(_jitc->function->regoff[regno], JIT_FP, regno);
245 if (!_jitc->function->regoff[regno]) {
246 _jitc->function->regoff[regno] =
247 jit_allocai(sizeof(jit_float64_t));
251 /* emit_stxi must not need temporary registers */
252 assert(!_jitc->getreg);
255 emit_stxi_d(_jitc->function->regoff[regno], JIT_FP, regno);
260 jit_regset_setbit(&_jitc->regsav, regno);
262 jit_regset_setbit(&_jitc->regarg, regno);
263 if (jit_class(_rvs[regno].spec) & jit_class_sav) {
264 /* if will modify callee save registers without a
265 * function prolog, better patch this assertion */
266 assert(_jitc->function != NULL);
267 if (!jit_regset_tstbit(&_jitc->function->regset, regno)) {
268 jit_regset_setbit(&_jitc->function->regset, regno);
277 /* nospill hint only valid during emit" */
278 assert(!(regspec & jit_class_nospill));
279 for (regno = 0; regno < _jitc->reglen; regno++) {
280 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
281 !jit_regset_tstbit(&_jitc->regsav, regno) &&
282 !jit_regset_tstbit(&_jitc->regarg, regno)) {
283 jit_regset_setbit(&_jitc->regarg, regno);
284 jit_regset_setbit(&_jitc->regsav, regno);
286 return (jit_regno_patch|regno);
291 /* Out of hardware registers */
293 assert(regspec & jit_class_chk);
298 _jit_unget_reg(jit_state_t *_jit, jit_int32_t regno)
300 regno = jit_regno(regno);
301 if (jit_regset_tstbit(&_jitc->regsav, regno)) {
304 /* emit_ldxi must not need a temporary register */
305 assert(!_jitc->getreg);
308 if (jit_class(_rvs[regno].spec) & jit_class_gpr)
309 emit_ldxi(regno, JIT_FP, _jitc->function->regoff[regno]);
311 emit_ldxi_d(regno, JIT_FP, _jitc->function->regoff[regno]);
313 /* emit_ldxi must not need a temporary register */
319 jit_regset_clrbit(&_jitc->regsav, regno);
321 #if defined(jit_carry)
322 assert((regno == jit_carry /*&& _NOREG != jit_carry*/) ||
323 jit_regset_tstbit(&_jitc->regarg, regno) != 0);
325 assert(jit_regset_tstbit(&_jitc->regarg, regno) != 0);
327 jit_regset_clrbit(&_jitc->regarg, regno);
331 _jit_callee_save_p(jit_state_t *_jit, jit_int32_t regno)
333 assert(regno >= 0 && regno < JIT_NOREG);
334 return (!!(_rvs[regno].spec & jit_class_sav));
338 _jit_pointer_p(jit_state_t *_jit, jit_pointer_t address)
340 return ((jit_uint8_t *)address >= _jit->code.ptr &&
341 (jit_word_t)address < _jit->pc.w);
346 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
348 u->rl = ~v->rl; u->rh = ~v->rh;
349 u->fl = ~v->fl; u->fh = ~v->fh;
353 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
355 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
356 u->fl = v->fl & w->fl; u->fh = v->fh & w->fh;
360 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
362 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
363 u->fl = v->fl | w->fl; u->fh = v->fh | w->fh;
367 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
369 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
370 u->fl = v->fl ^ w->fl; u->fh = v->fh ^ w->fh;
374 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
376 u->rl = v->rl; u->rh = v->rh;
377 u->fl = v->fl; u->fh = v->fh;
381 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
383 jit_bool_t w = !!(v & (v - 1));
385 assert(v >= 0 && v <= 256);
387 u->rl = u->rh = u->fl = u->fh = -1LL;
389 u->rl = w ? (1LL << v) - 1 : -1LL;
390 u->rh = u->fl = u->fh = 0;
394 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
398 u->rl = u->rh = -1LL;
399 u->fl = w ? (1LL << (v - 128)) - 1 : -1LL;
403 u->rl = u->rh = u->fl = -1LL;
404 u->fh = w ? (1LL << (v - 128)) - 1 : -1LL;
409 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
411 return !((u->rl == v && u->rh == 0 && u->fl == 0 && u->fh == 0));
415 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
418 u->rh = u->fl = u->fh = 0;
422 jit_regset_set_p(jit_regset_t *u)
424 return (u->rl || u->rh || u->fl || u->fh);
428 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
430 assert(bit >= 0 && bit <= 255);
432 set->rl &= ~(1LL << bit);
434 set->rh &= ~(1LL << (bit - 64));
436 set->fl &= ~(1LL << (bit - 128));
438 set->fh &= ~(1LL << (bit - 192));
442 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
444 assert(bit >= 0 && bit <= 255);
446 set->rl |= 1LL << bit;
448 set->rh |= 1LL << (bit - 64);
450 set->fl |= 1LL << (bit - 128);
452 set->fh |= 1LL << (bit - 192);
456 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
458 assert(bit >= 0 && bit <= 255);
460 return (!!(set->rl & (1LL << bit)));
462 return (!!(set->rh & (1LL << (bit - 64))));
464 return (!!(set->fl & (1LL << (bit - 128))));
465 return (!!(set->fh & (1LL << (bit - 192))));
469 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
471 assert(offset >= 0 && offset <= 255);
472 for (; offset < 64; offset++) {
473 if (set->rl & (1LL << offset))
476 for (; offset < 128; offset++) {
477 if (set->rh & (1LL << (offset - 64)))
480 for (; offset < 192; offset++) {
481 if (set->fl & (1LL << (offset - 128)))
484 for (; offset < 256; offset++) {
485 if (set->fh & (1LL << (offset - 192)))
491 #elif __sparc__ && __WORDSIZE == 64
493 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
495 u->rl = ~v->rl; u->rh = ~v->rh;
499 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
501 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
505 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
507 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
511 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
513 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
517 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
519 u->rl = v->rl; u->rh = v->rh;
523 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
525 jit_bool_t w = !!(v & (v - 1));
527 assert(v >= 0 && v <= 128);
529 u->rl = u->rh = -1LL;
531 u->rl = w ? (1LL << v) - 1 : -1LL;
536 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
541 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
543 return !((u->rl == v && u->rh == 0));
547 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
554 jit_regset_set_p(jit_regset_t *u)
556 return (u->rl || u->rh);
560 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
562 assert(bit >= 0 && bit <= 128);
564 set->rl &= ~(1LL << bit);
566 set->rh &= ~(1LL << (bit - 64));
570 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
572 assert(bit >= 0 && bit <= 127);
574 set->rl |= 1LL << bit;
576 set->rh |= 1LL << (bit - 64);
580 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
582 assert(bit >= 0 && bit <= 127);
584 return (!!(set->rl & (1LL << bit)));
586 return (!!(set->rh & (1LL << (bit - 64))));
590 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
592 assert(offset >= 0 && offset <= 127);
593 for (; offset < 64; offset++) {
594 if (set->rl & (1LL << offset))
597 for (; offset < 128; offset++) {
598 if (set->rh & (1LL << (offset - 64)))
606 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
609 assert(offset >= 0 && offset <= 63);
610 if ((mask = *set >> offset)) {
623 _jit_save(jit_state_t *_jit, jit_int32_t reg)
625 reg = jit_regno(reg);
626 assert(!_jitc->realize);
627 _jitc->spill[reg] = jit_new_node_w(jit_code_save, reg);
631 _jit_load(jit_state_t *_jit, jit_int32_t reg)
635 reg = jit_regno(reg);
636 assert(!_jitc->realize);
637 assert(_jitc->spill[reg] != NULL);
638 node = jit_new_node_w(jit_code_load, reg);
639 /* create a path to flag the save/load is not required */
640 node->link = _jitc->spill[reg];
641 node->link->link = node;
642 _jitc->spill[reg] = NULL;
646 hash_data(const void *data, jit_word_t length)
648 const jit_uint8_t *ptr;
650 for (i = key = 0, ptr = data; i < length; i++)
651 key = (key << (key & 1)) ^ ptr[i];
656 _jit_address(jit_state_t *_jit, jit_node_t *node)
659 assert(node != NULL &&
660 /* If a node type that is documented to be a fixed marker */
661 (node->code == jit_code_note || node->code == jit_code_name ||
662 /* If another special fixed marker, returned by jit_indirect() */
663 (node->code == jit_code_label && (node->flag & jit_flag_use) != 0)));
664 return ((jit_pointer_t)node->u.w);
668 _jit_data(jit_state_t *_jit, const void *data,
669 jit_word_t length, jit_int32_t align)
674 assert(!_jitc->realize);
676 /* Ensure there is space even if asking for a duplicate */
677 if (((_jitc->data.offset + 7) & -8) + length > _jit->data.length) {
680 size = (_jit->data.length + length + 4096) & - 4095;
681 assert(size >= _jit->data.length);
682 if (_jitc->data.ptr == NULL)
683 jit_alloc((jit_pointer_t *)&_jitc->data.ptr, size);
685 jit_realloc((jit_pointer_t *)&_jitc->data.ptr,
686 _jit->data.length, size);
687 _jit->data.length = size;
689 if (_jitc->data.table == NULL)
690 jit_alloc((jit_pointer_t *)&_jitc->data.table,
691 (_jitc->data.size = 16) * sizeof(jit_node_t*));
693 key = hash_data(data, length) & (_jitc->data.size - 1);
694 node = _jitc->data.table[key];
695 for (; node; node = node->next) {
696 if (node->v.w == length &&
697 memcmp(_jitc->data.ptr + node->u.w, data, length) == 0)
702 node = jit_new_node_no_link(jit_code_data);
709 _jitc->data.offset = (_jitc->data.offset + 1) & -2;
712 _jitc->data.offset = (_jitc->data.offset + 3) & -4;
715 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
718 node->u.w = _jitc->data.offset;
720 jit_memcpy(_jitc->data.ptr + _jitc->data.offset, data, length);
721 _jitc->data.offset += length;
723 node->next = _jitc->data.table[key];
724 _jitc->data.table[key] = node;
727 /* Rehash if more than 75% used table */
728 if (_jitc->data.count >
729 (_jitc->data.size >> 1) + (_jitc->data.size >> 2) &&
730 (_jitc->data.size << 1) > _jitc->data.size) {
736 jit_alloc((jit_pointer_t *)&hash,
737 (_jitc->data.size << 1) * sizeof(jit_node_t*));
738 for (i = 0; i < _jitc->data.size; i++) {
739 temp = _jitc->data.table[i];
740 for (; temp; temp = next) {
742 key = hash_data(_jitc->data.ptr + temp->u.w, temp->v.w) &
743 ((_jitc->data.size << 1) - 1);
744 temp->next = hash[key];
748 jit_free((jit_pointer_t *)&_jitc->data.table);
749 _jitc->data.table = hash;
750 _jitc->data.size <<= 1;
758 _new_pool(jit_state_t *_jit)
763 if (_jitc->pool.offset >= _jitc->pool.length) {
766 length = _jitc->pool.length + 16;
767 jit_realloc((jit_pointer_t *)&_jitc->pool.ptr,
768 _jitc->pool.length * sizeof(jit_node_t *),
769 length * sizeof(jit_node_t *));
770 _jitc->pool.length = length;
772 jit_alloc((jit_pointer_t *)(_jitc->pool.ptr + _jitc->pool.offset),
773 sizeof(jit_node_t) * 1024);
774 list = _jitc->pool.ptr[_jitc->pool.offset];
775 for (offset = 1; offset < 1024; offset++, list++)
776 list->next = list + 1;
777 list->next = _jitc->list;
778 _jitc->list = _jitc->pool.ptr[_jitc->pool.offset];
779 ++_jitc->pool.offset;
783 _new_node(jit_state_t *_jit, jit_code_t code)
787 if (_jitc->list == NULL)
790 _jitc->list = node->next;
792 node->flag |= jit_flag_synth;
799 static inline jit_node_t *
800 _link_node(jit_state_t *_jit, jit_node_t *node)
803 _jitc->tail->next = node;
806 return (_jitc->tail = node);
810 _del_node(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
813 assert(prev == _jitc->head);
814 _jitc->head = node->next;
817 prev->next = node->next;
818 memset(node, 0, sizeof(jit_node_t));
819 node->next = _jitc->list;
824 _free_node(jit_state_t *_jit, jit_node_t *node)
826 memset(node, 0, sizeof(jit_node_t));
827 node->next = _jitc->list;
832 _del_label(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
836 /* only allow call to del_label on linked labels */
837 block = _jitc->blocks.ptr + node->v.w;
838 assert(block->label == node);
840 /* del_label() should only be called when optimizing.
841 * This will leave an empty block index */
842 jit_regset_del(&block->reglive);
843 jit_regset_del(&block->regmask);
846 /* redundant, should be already true */
847 assert(node->link == NULL);
848 del_node(prev, node);
856 jit_alloc((jit_pointer_t *)&_jit, sizeof(jit_state_t));
857 jit_alloc((jit_pointer_t *)&_jitc, sizeof(jit_compiler_t));
858 jit_regset_new(&_jitc->regarg);
859 jit_regset_new(&_jitc->regsav);
860 jit_regset_new(&_jitc->reglive);
861 jit_regset_new(&_jitc->regmask);
865 jit_alloc((jit_pointer_t *)&_jitc->spill,
866 _jitc->reglen * sizeof(jit_node_t*));
867 jit_alloc((jit_pointer_t *)&_jitc->gen,
868 _jitc->reglen * sizeof(jit_int32_t));
869 jit_alloc((jit_pointer_t *)&_jitc->values,
870 _jitc->reglen * sizeof(jit_value_t));
872 jit_alloc((jit_pointer_t *)&_jitc->patches.ptr,
873 (_jitc->patches.length = 1024) * sizeof(jit_patch_t));
874 jit_alloc((jit_pointer_t *)&_jitc->functions.ptr,
875 (_jitc->functions.length = 16) * sizeof(jit_function_t));
876 jit_alloc((jit_pointer_t *)&_jitc->pool.ptr,
877 (_jitc->pool.length = 16) * sizeof(jit_node_t*));
878 jit_alloc((jit_pointer_t *)&_jitc->blocks.ptr,
879 (_jitc->blocks.length = 16) * sizeof(jit_block_t));
880 #if __arm__ && DISASSEMBLER
881 jit_alloc((jit_pointer_t *)&_jitc->data_info.ptr,
882 (_jitc->data_info.length = 1024) * sizeof(jit_data_info_t));
885 /* allocate at most one extra note in case jit_name() is
886 * never called, or called after adding at least one note */
887 _jit->note.length = 1;
888 _jitc->note.size = sizeof(jit_note_t);
894 _jit_clear_state(jit_state_t *_jit)
896 #if DEVEL_DISASSEMBLER
897 # define jit_really_clear_state() _jit_really_clear_state(_jit)
900 void _jit_really_clear_state(jit_state_t *_jit)
904 jit_function_t *function;
906 /* release memory not required at jit execution time and set
907 * pointers to NULL to explicitly know they are released */
908 _jitc->head = _jitc->tail = NULL;
910 jit_free((jit_pointer_t *)&_jitc->data.table);
911 _jitc->data.size = _jitc->data.count = 0;
913 jit_free((jit_pointer_t *)&_jitc->spill);
914 jit_free((jit_pointer_t *)&_jitc->gen);
915 jit_free((jit_pointer_t *)&_jitc->values);
917 jit_free((jit_pointer_t *)&_jitc->blocks.ptr);
919 jit_free((jit_pointer_t *)&_jitc->patches.ptr);
920 _jitc->patches.offset = _jitc->patches.length = 0;
922 for (offset = 0; offset < _jitc->functions.offset; offset++) {
923 function = _jitc->functions.ptr + offset;
924 jit_free((jit_pointer_t *)&function->regoff);
926 jit_free((jit_pointer_t *)&_jitc->functions.ptr);
927 _jitc->functions.offset = _jitc->functions.length = 0;
928 _jitc->function = NULL;
930 for (offset = 0; offset < _jitc->pool.offset; offset++)
931 jit_free((jit_pointer_t *)(_jitc->pool.ptr + offset));
932 jit_free((jit_pointer_t *)&_jitc->pool.ptr);
933 _jitc->pool.offset = _jitc->pool.length = 0;
936 _jitc->note.head = _jitc->note.tail =
937 _jitc->note.name = _jitc->note.note = NULL;
938 _jitc->note.base = NULL;
940 #if __arm__ && DISASSEMBLER
941 jit_free((jit_pointer_t *)&_jitc->data_info.ptr);
944 #if (__powerpc__ && _CALL_AIXDESC) || __ia64__
945 jit_free((jit_pointer_t *)&_jitc->prolog.ptr);
949 jit_regset_del(&_jitc->regs);
952 jit_free((jit_pointer_t *)&_jitc);
956 _jit_destroy_state(jit_state_t *_jit)
958 #if DEVEL_DISASSEMBLER
959 jit_really_clear_state();
962 if (!_jit->user_code)
963 munmap(_jit->code.ptr, _jit->code.length);
964 if (!_jit->user_data)
965 munmap(_jit->data.ptr, _jit->data.length);
967 jit_free((jit_pointer_t *)&_jit);
971 _jit_synth_inc(jit_state_t *_jit)
973 assert(_jitc->synth < 8);
978 _jit_new_node(jit_state_t *_jit, jit_code_t code)
980 assert(!_jitc->realize);
981 return (link_node(new_node(code)));
985 _jit_new_node_no_link(jit_state_t *_jit, jit_code_t code)
987 assert(!_jitc->realize);
988 return (new_node(code));
992 _jit_link_node(jit_state_t *_jit, jit_node_t *node)
994 assert(!_jitc->realize);
999 _jit_synth_dec(jit_state_t *_jit)
1001 assert(_jitc->synth > 0);
1006 _jit_new_node_w(jit_state_t *_jit, jit_code_t code,
1009 jit_node_t *node = new_node(code);
1010 assert(!_jitc->realize);
1012 return (link_node(node));
1016 _jit_new_node_f(jit_state_t *_jit, jit_code_t code,
1019 jit_node_t *node = new_node(code);
1020 assert(!_jitc->realize);
1022 return (link_node(node));
1026 _jit_new_node_d(jit_state_t *_jit, jit_code_t code,
1029 jit_node_t *node = new_node(code);
1030 assert(!_jitc->realize);
1032 return (link_node(node));
1036 _jit_new_node_p(jit_state_t *_jit, jit_code_t code,
1039 jit_node_t *node = new_node(code);
1040 assert(!_jitc->realize);
1042 return (link_node(node));
1046 _jit_new_node_ww(jit_state_t *_jit, jit_code_t code,
1047 jit_word_t u, jit_word_t v)
1049 jit_node_t *node = new_node(code);
1050 assert(!_jitc->realize);
1053 return (link_node(node));
1057 _jit_new_node_wp(jit_state_t *_jit, jit_code_t code,
1058 jit_word_t u, jit_pointer_t v)
1060 return (jit_new_node_ww(code, u, (jit_word_t)v));
1064 _jit_new_node_fp(jit_state_t *_jit, jit_code_t code,
1065 jit_float32_t u, jit_pointer_t v)
1067 jit_node_t *node = new_node(code);
1068 assert(!_jitc->realize);
1070 node->v.w = (jit_word_t)v;
1071 return (link_node(node));
1075 _jit_new_node_dp(jit_state_t *_jit, jit_code_t code,
1076 jit_float64_t u, jit_pointer_t v)
1078 jit_node_t *node = new_node(code);
1079 assert(!_jitc->realize);
1081 node->v.w = (jit_word_t)v;
1082 return (link_node(node));
1086 _jit_new_node_pw(jit_state_t *_jit, jit_code_t code,
1087 jit_pointer_t u, jit_word_t v)
1089 return (jit_new_node_ww(code, (jit_word_t)u, v));
1093 _jit_new_node_wf(jit_state_t *_jit, jit_code_t code,
1094 jit_word_t u, jit_float32_t v)
1096 jit_node_t *node = new_node(code);
1097 assert(!_jitc->realize);
1100 return (link_node(node));
1104 _jit_new_node_wd(jit_state_t *_jit, jit_code_t code,
1105 jit_word_t u, jit_float64_t v)
1107 jit_node_t *node = new_node(code);
1108 assert(!_jitc->realize);
1111 return (link_node(node));
1115 _jit_new_node_www(jit_state_t *_jit, jit_code_t code,
1116 jit_word_t u, jit_word_t v, jit_word_t w)
1118 jit_node_t *node = new_node(code);
1119 assert(!_jitc->realize);
1123 return (link_node(node));
1127 _jit_new_node_qww(jit_state_t *_jit, jit_code_t code,
1128 jit_int32_t l, jit_int32_t h,
1129 jit_word_t v, jit_word_t w)
1131 jit_node_t *node = new_node(code);
1132 assert(!_jitc->realize);
1138 return (link_node(node));
1142 _jit_new_node_wwq(jit_state_t *_jit, jit_code_t code,
1143 jit_word_t u, jit_word_t v,
1144 jit_int32_t l, jit_int32_t h)
1146 jit_node_t *node = new_node(code);
1147 assert(!_jitc->realize);
1152 return (link_node(node));
1156 _jit_new_node_wwf(jit_state_t *_jit, jit_code_t code,
1157 jit_word_t u, jit_word_t v, jit_float32_t w)
1159 jit_node_t *node = new_node(code);
1160 assert(!_jitc->realize);
1164 return (link_node(node));
1168 _jit_new_node_wwd(jit_state_t *_jit, jit_code_t code,
1169 jit_word_t u, jit_word_t v, jit_float64_t w)
1171 jit_node_t *node = new_node(code);
1172 assert(!_jitc->realize);
1176 return (link_node(node));
1180 _jit_new_node_pww(jit_state_t *_jit, jit_code_t code,
1181 jit_pointer_t u, jit_word_t v, jit_word_t w)
1183 jit_node_t *node = new_node(code);
1184 assert(!_jitc->realize);
1188 return (link_node(node));
1192 _jit_new_node_pwf(jit_state_t *_jit, jit_code_t code,
1193 jit_pointer_t u, jit_word_t v, jit_float32_t w)
1195 jit_node_t *node = new_node(code);
1196 assert(!_jitc->realize);
1200 return (link_node(node));
1204 _jit_new_node_pwd(jit_state_t *_jit, jit_code_t code,
1205 jit_pointer_t u, jit_word_t v, jit_float64_t w)
1207 jit_node_t *node = new_node(code);
1208 assert(!_jitc->realize);
1212 return (link_node(node));
1216 _jit_label(jit_state_t *_jit)
1220 if (!(node = _jitc->tail) || node->code != jit_code_label) {
1221 node = jit_forward();
1229 _jit_forward(jit_state_t *_jit)
1231 return (jit_new_node_no_link(jit_code_label));
1235 _jit_indirect(jit_state_t *_jit)
1240 node->flag |= jit_flag_use;
1246 _jit_link(jit_state_t *_jit, jit_node_t *node)
1250 assert((node->code == jit_code_label ||
1251 node->code == jit_code_prolog ||
1252 node->code == jit_code_epilog) && !node->next);
1253 jit_link_node(node);
1254 if (_jitc->blocks.offset >= _jitc->blocks.length) {
1257 length = _jitc->blocks.length + 16;
1258 jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr,
1259 _jitc->blocks.length * sizeof(jit_block_t),
1260 length * sizeof(jit_block_t));
1261 _jitc->blocks.length = length;
1263 block = _jitc->blocks.ptr + _jitc->blocks.offset;
1264 block->label = node;
1265 node->v.w = _jitc->blocks.offset;
1266 jit_regset_new(&block->reglive);
1267 jit_regset_new(&block->regmask);
1268 ++_jitc->blocks.offset;
1272 _jit_forward_p(jit_state_t *_jit, jit_node_t *node)
1274 return (node->code == jit_code_label && !node->next && node != _jitc->tail);
1278 _jit_indirect_p(jit_state_t *_jit, jit_node_t *node)
1280 return (node->code == jit_code_label && !!(node->flag & jit_flag_use));
1284 _jit_target_p(jit_state_t *_jit, jit_node_t *node)
1286 return (node->code == jit_code_label && !!node->link);
1290 _jit_prepare(jit_state_t *_jit)
1292 assert(_jitc->function != NULL);
1293 _jitc->function->call.call = jit_call_default;
1294 _jitc->function->call.argi =
1295 _jitc->function->call.argf =
1296 _jitc->function->call.size = 0;
1297 _jitc->prepare = jit_new_node(jit_code_prepare);
1301 _jit_patch(jit_state_t* _jit, jit_node_t *instr)
1305 if (!(label = _jitc->tail) || label->code != jit_code_label)
1306 label = jit_label();
1307 jit_patch_at(instr, label);
1311 _jit_classify(jit_state_t *_jit, jit_code_t code)
1316 case jit_code_data: case jit_code_save: case jit_code_load:
1317 case jit_code_name: case jit_code_label: case jit_code_note:
1318 case jit_code_prolog: case jit_code_ellipsis: case jit_code_va_push:
1319 case jit_code_epilog: case jit_code_ret: case jit_code_prepare:
1322 case jit_code_live: case jit_code_va_end:
1323 case jit_code_retr: case jit_code_retr_f: case jit_code_retr_d:
1324 case jit_code_pushargr: case jit_code_pushargr_f:
1325 case jit_code_pushargr_d:
1326 case jit_code_finishr: /* synthesized will set jit_cc_a0_jmp */
1327 mask = jit_cc_a0_reg;
1329 case jit_code_align: case jit_code_reti: case jit_code_pushargi:
1330 case jit_code_finishi: /* synthesized will set jit_cc_a0_jmp */
1331 mask = jit_cc_a0_int;
1333 case jit_code_reti_f: case jit_code_pushargi_f:
1334 mask = jit_cc_a0_flt;
1336 case jit_code_reti_d: case jit_code_pushargi_d:
1337 mask = jit_cc_a0_dbl;
1339 case jit_code_allocai:
1340 mask = jit_cc_a0_int|jit_cc_a1_int;
1342 case jit_code_arg: case jit_code_arg_f: case jit_code_arg_d:
1343 mask = jit_cc_a0_int|jit_cc_a0_arg;
1345 case jit_code_calli: case jit_code_jmpi:
1346 mask = jit_cc_a0_jmp;
1348 case jit_code_callr: case jit_code_jmpr:
1349 mask = jit_cc_a0_reg|jit_cc_a0_jmp;
1351 case jit_code_retval_c: case jit_code_retval_uc:
1352 case jit_code_retval_s: case jit_code_retval_us:
1353 case jit_code_retval_i: case jit_code_retval_ui:
1354 case jit_code_retval_l:
1355 case jit_code_retval_f: case jit_code_retval_d:
1356 case jit_code_va_start:
1357 mask = jit_cc_a0_reg|jit_cc_a0_chg;
1359 case jit_code_getarg_c: case jit_code_getarg_uc:
1360 case jit_code_getarg_s: case jit_code_getarg_us:
1361 case jit_code_getarg_i: case jit_code_getarg_ui:
1362 case jit_code_getarg_l:
1363 case jit_code_getarg_f: case jit_code_getarg_d:
1364 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_arg;
1366 case jit_code_putargr: case jit_code_putargr_f:
1367 case jit_code_putargr_d:
1368 mask = jit_cc_a0_reg|jit_cc_a1_arg;
1370 case jit_code_putargi:
1371 mask = jit_cc_a0_int|jit_cc_a1_arg;
1373 case jit_code_putargi_f:
1374 mask = jit_cc_a0_flt|jit_cc_a1_arg;
1376 case jit_code_putargi_d:
1377 mask = jit_cc_a0_dbl|jit_cc_a1_arg;
1379 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1380 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1381 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1382 case jit_code_ldi_d:
1383 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int;
1385 case jit_code_movi_f: case jit_code_movi_f_w:
1386 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_flt;
1388 case jit_code_movi_d: case jit_code_movi_d_w:
1389 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_dbl;
1391 case jit_code_movi_d_ww:
1392 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1395 case jit_code_negr: case jit_code_comr: case jit_code_movr:
1396 case jit_code_extr_c: case jit_code_extr_uc: case jit_code_extr_s:
1397 case jit_code_extr_us: case jit_code_extr_i: case jit_code_extr_ui:
1398 case jit_code_truncr_f_i: case jit_code_truncr_f_l:
1399 case jit_code_truncr_d_i: case jit_code_truncr_d_l:
1400 case jit_code_htonr_us: case jit_code_htonr_ui: case jit_code_htonr_ul:
1401 case jit_code_bswapr_us: case jit_code_bswapr_ui: case jit_code_bswapr_ul:
1402 case jit_code_ldr_c: case jit_code_ldr_uc:
1403 case jit_code_ldr_s: case jit_code_ldr_us: case jit_code_ldr_i:
1404 case jit_code_ldr_ui: case jit_code_ldr_l: case jit_code_negr_f:
1405 case jit_code_absr_f: case jit_code_sqrtr_f: case jit_code_movr_f:
1406 case jit_code_extr_f: case jit_code_extr_d_f: case jit_code_ldr_f:
1407 case jit_code_negr_d: case jit_code_absr_d: case jit_code_sqrtr_d:
1408 case jit_code_movr_d: case jit_code_extr_d: case jit_code_extr_f_d:
1409 case jit_code_ldr_d:
1410 case jit_code_movr_w_f: case jit_code_movr_f_w:
1411 case jit_code_movr_w_d: case jit_code_movr_d_w:
1412 case jit_code_va_arg: case jit_code_va_arg_d:
1413 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg;
1415 case jit_code_movr_d_ww:
1416 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1419 case jit_code_addi: case jit_code_addxi: case jit_code_addci:
1420 case jit_code_subi: case jit_code_subxi: case jit_code_subci:
1422 case jit_code_muli: case jit_code_divi: case jit_code_divi_u:
1423 case jit_code_remi: case jit_code_remi_u: case jit_code_andi:
1424 case jit_code_ori: case jit_code_xori: case jit_code_lshi:
1425 case jit_code_rshi: case jit_code_rshi_u: case jit_code_lti:
1426 case jit_code_lti_u: case jit_code_lei: case jit_code_lei_u:
1427 case jit_code_eqi: case jit_code_gei: case jit_code_gei_u:
1428 case jit_code_gti: case jit_code_gti_u: case jit_code_nei:
1429 case jit_code_ldxi_c: case jit_code_ldxi_uc: case jit_code_ldxi_s:
1430 case jit_code_ldxi_us: case jit_code_ldxi_i: case jit_code_ldxi_ui:
1431 case jit_code_ldxi_l: case jit_code_ldxi_f: case jit_code_ldxi_d:
1432 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_int;
1434 case jit_code_qmuli: case jit_code_qmuli_u:
1435 case jit_code_qdivi: case jit_code_qdivi_u:
1436 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1437 jit_cc_a1_reg|jit_cc_a2_int;
1439 case jit_code_addi_f: case jit_code_subi_f: case jit_code_rsbi_f:
1440 case jit_code_muli_f: case jit_code_divi_f: case jit_code_lti_f:
1441 case jit_code_lei_f: case jit_code_eqi_f: case jit_code_gei_f:
1442 case jit_code_gti_f: case jit_code_nei_f: case jit_code_unlti_f:
1443 case jit_code_unlei_f: case jit_code_uneqi_f: case jit_code_ungei_f:
1444 case jit_code_ungti_f: case jit_code_ltgti_f: case jit_code_ordi_f:
1445 case jit_code_unordi_f:
1446 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_flt;
1448 case jit_code_addi_d: case jit_code_subi_d: case jit_code_rsbi_d:
1449 case jit_code_muli_d: case jit_code_divi_d: case jit_code_lti_d:
1450 case jit_code_lei_d: case jit_code_eqi_d: case jit_code_gei_d:
1451 case jit_code_gti_d: case jit_code_nei_d: case jit_code_unlti_d:
1452 case jit_code_unlei_d: case jit_code_uneqi_d: case jit_code_ungei_d:
1453 case jit_code_ungti_d: case jit_code_ltgti_d: case jit_code_ordi_d:
1454 case jit_code_unordi_d:
1455 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_dbl;
1457 case jit_code_addr: case jit_code_addxr: case jit_code_addcr:
1458 case jit_code_subr: case jit_code_subxr: case jit_code_subcr:
1459 case jit_code_mulr: case jit_code_divr: case jit_code_divr_u:
1460 case jit_code_remr: case jit_code_remr_u: case jit_code_andr:
1461 case jit_code_orr: case jit_code_xorr: case jit_code_lshr:
1462 case jit_code_rshr: case jit_code_rshr_u: case jit_code_ltr:
1463 case jit_code_ltr_u: case jit_code_ler: case jit_code_ler_u:
1464 case jit_code_eqr: case jit_code_ger: case jit_code_ger_u:
1465 case jit_code_gtr: case jit_code_gtr_u: case jit_code_ner:
1466 case jit_code_ldxr_c: case jit_code_ldxr_uc: case jit_code_ldxr_s:
1467 case jit_code_ldxr_us: case jit_code_ldxr_i: case jit_code_ldxr_ui:
1468 case jit_code_ldxr_l: case jit_code_addr_f: case jit_code_subr_f:
1469 case jit_code_mulr_f: case jit_code_divr_f: case jit_code_ltr_f:
1470 case jit_code_ler_f: case jit_code_eqr_f: case jit_code_ger_f:
1471 case jit_code_gtr_f: case jit_code_ner_f: case jit_code_unltr_f:
1472 case jit_code_unler_f: case jit_code_uneqr_f: case jit_code_unger_f:
1473 case jit_code_ungtr_f: case jit_code_ltgtr_f: case jit_code_ordr_f:
1474 case jit_code_unordr_f: case jit_code_ldxr_f: case jit_code_addr_d:
1475 case jit_code_subr_d: case jit_code_mulr_d: case jit_code_divr_d:
1476 case jit_code_ltr_d: case jit_code_ler_d: case jit_code_eqr_d:
1477 case jit_code_ger_d: case jit_code_gtr_d: case jit_code_ner_d:
1478 case jit_code_unltr_d: case jit_code_unler_d: case jit_code_uneqr_d:
1479 case jit_code_unger_d: case jit_code_ungtr_d: case jit_code_ltgtr_d:
1480 case jit_code_ordr_d: case jit_code_unordr_d: case jit_code_ldxr_d:
1481 case jit_code_movr_ww_d:
1482 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_reg;
1484 case jit_code_qmulr: case jit_code_qmulr_u:
1485 case jit_code_qdivr: case jit_code_qdivr_u:
1486 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1487 jit_cc_a1_reg|jit_cc_a2_reg;
1489 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1490 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1491 mask = jit_cc_a0_int|jit_cc_a1_reg;
1493 case jit_code_blti: case jit_code_blti_u: case jit_code_blei:
1494 case jit_code_blei_u: case jit_code_beqi: case jit_code_bgei:
1495 case jit_code_bgei_u: case jit_code_bgti: case jit_code_bgti_u:
1496 case jit_code_bnei: case jit_code_bmsi: case jit_code_bmci:
1497 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_int;
1499 case jit_code_blti_f: case jit_code_blei_f: case jit_code_beqi_f:
1500 case jit_code_bgei_f: case jit_code_bgti_f: case jit_code_bnei_f:
1501 case jit_code_bunlti_f: case jit_code_bunlei_f: case jit_code_buneqi_f:
1502 case jit_code_bungei_f: case jit_code_bungti_f: case jit_code_bltgti_f:
1503 case jit_code_bordi_f: case jit_code_bunordi_f:
1504 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_flt;
1506 case jit_code_blti_d: case jit_code_blei_d: case jit_code_beqi_d:
1507 case jit_code_bgei_d: case jit_code_bgti_d: case jit_code_bnei_d:
1508 case jit_code_bunlti_d: case jit_code_bunlei_d: case jit_code_buneqi_d:
1509 case jit_code_bungei_d: case jit_code_bungti_d: case jit_code_bltgti_d:
1510 case jit_code_bordi_d: case jit_code_bunordi_d:
1511 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_dbl;
1513 case jit_code_allocar: /* synthesized instructions make it
1514 * equivalent to jit_cc_a0_chg */
1515 case jit_code_str_c: case jit_code_str_s: case jit_code_str_i:
1516 case jit_code_str_l: case jit_code_str_f: case jit_code_str_d:
1517 mask = jit_cc_a0_reg|jit_cc_a1_reg;
1519 case jit_code_stxi_c: case jit_code_stxi_s: case jit_code_stxi_i:
1520 case jit_code_stxi_l: case jit_code_stxi_f: case jit_code_stxi_d:
1521 mask = jit_cc_a0_int|jit_cc_a1_reg|jit_cc_a2_reg;
1523 case jit_code_bltr: case jit_code_bltr_u: case jit_code_bler:
1524 case jit_code_bler_u: case jit_code_beqr: case jit_code_bger:
1525 case jit_code_bger_u: case jit_code_bgtr: case jit_code_bgtr_u:
1526 case jit_code_bner: case jit_code_bmsr: case jit_code_bmcr:
1527 case jit_code_bltr_f: case jit_code_bler_f: case jit_code_beqr_f:
1528 case jit_code_bger_f: case jit_code_bgtr_f: case jit_code_bner_f:
1529 case jit_code_bunltr_f: case jit_code_bunler_f: case jit_code_buneqr_f:
1530 case jit_code_bunger_f: case jit_code_bungtr_f: case jit_code_bltgtr_f:
1531 case jit_code_bordr_f: case jit_code_bunordr_f:case jit_code_bltr_d:
1532 case jit_code_bler_d: case jit_code_beqr_d: case jit_code_bger_d:
1533 case jit_code_bgtr_d: case jit_code_bner_d: case jit_code_bunltr_d:
1534 case jit_code_bunler_d: case jit_code_buneqr_d: case jit_code_bunger_d:
1535 case jit_code_bungtr_d: case jit_code_bltgtr_d: case jit_code_bordr_d:
1536 case jit_code_bunordr_d:
1537 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_reg;
1539 case jit_code_boaddi: case jit_code_boaddi_u: case jit_code_bxaddi:
1540 case jit_code_bxaddi_u: case jit_code_bosubi: case jit_code_bosubi_u:
1541 case jit_code_bxsubi: case jit_code_bxsubi_u:
1542 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_int;
1544 case jit_code_stxr_c: case jit_code_stxr_s: case jit_code_stxr_i:
1545 case jit_code_stxr_l: case jit_code_stxr_f: case jit_code_stxr_d:
1546 mask = jit_cc_a0_reg|jit_cc_a1_reg|jit_cc_a2_reg;
1548 case jit_code_boaddr: case jit_code_boaddr_u: case jit_code_bxaddr:
1549 case jit_code_bxaddr_u: case jit_code_bosubr: case jit_code_bosubr_u:
1550 case jit_code_bxsubr: case jit_code_bxsubr_u:
1551 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_reg;
1553 case jit_code_movnr: case jit_code_movzr:
1554 mask = jit_cc_a0_reg|jit_cc_a0_cnd|jit_cc_a1_reg|jit_cc_a2_reg;
1557 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|
1558 jit_cc_a2_reg|jit_cc_a2_rlh;
1561 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int|
1562 jit_cc_a2_reg|jit_cc_a2_rlh;
1572 _jit_patch_abs(jit_state_t *_jit, jit_node_t *instr, jit_pointer_t address)
1576 switch (instr->code) {
1577 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1578 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1579 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1580 case jit_code_ldi_d:
1581 instr->v.p = address;
1583 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1584 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1585 instr->u.p = address;
1588 mask = jit_classify(instr->code);
1589 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1590 instr->u.p = address;
1595 _jit_patch_at(jit_state_t *_jit, jit_node_t *instr, jit_node_t *label)
1599 assert(!(instr->flag & jit_flag_node));
1600 instr->flag |= jit_flag_node;
1601 switch (instr->code) {
1603 assert(label->code == jit_code_label ||
1604 label->code == jit_code_data);
1606 if (label->code == jit_code_data)
1607 instr->flag |= jit_flag_data;
1610 assert(label->code == jit_code_label ||
1611 label->code == jit_code_epilog);
1615 mask = jit_classify(instr->code);
1616 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1617 assert(label->code == jit_code_label);
1621 /* link field is used as list of nodes associated with a given label */
1622 instr->link = label->link;
1623 label->link = instr;
1627 _jit_optimize(jit_state_t *_jit)
1637 _jitc->function = NULL;
1640 sequential_labels();
1646 /* create initial mapping of live register values
1647 * at the start of a basic block */
1648 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1649 block = _jitc->blocks.ptr + offset;
1652 if (block->label->code != jit_code_epilog)
1656 /* set live state of registers not referenced in a block, but
1657 * referenced in a jump target or normal flow */
1660 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1661 block = _jitc->blocks.ptr + offset;
1664 if (block->label->code != jit_code_epilog)
1665 jit_follow(block, &todo);
1676 /* figure out labels that are only reached with a jump
1677 * and is required to do a simple redundant_store removal
1678 * on jit_beqi below */
1680 for (node = _jitc->head; node; node = node->next) {
1681 switch (node->code) {
1682 case jit_code_label:
1684 node->flag |= jit_flag_head;
1686 case jit_code_jmpi: case jit_code_jmpr:
1687 case jit_code_epilog:
1690 case jit_code_data: case jit_code_note:
1698 for (node = _jitc->head; node; node = node->next) {
1699 mask = jit_classify(node->code);
1700 if (mask & jit_cc_a0_reg)
1701 node->u.w &= ~jit_regno_patch;
1702 if (mask & jit_cc_a1_reg)
1703 node->v.w &= ~jit_regno_patch;
1704 if (mask & jit_cc_a2_reg)
1705 node->w.w &= ~jit_regno_patch;
1706 if (node->code == jit_code_beqi) {
1707 if (redundant_store(node, 1))
1710 else if (node->code == jit_code_bnei) {
1711 if (redundant_store(node, 0))
1716 /* If instructions were removed, must recompute state at
1717 * start of blocks. */
1724 for (node = _jitc->head; node; node = node->next) {
1725 mask = jit_classify(node->code);
1726 if (mask & jit_cc_a0_reg)
1727 node->u.w &= ~jit_regno_patch;
1728 if (mask & jit_cc_a1_reg)
1729 node->v.w &= ~jit_regno_patch;
1730 if (mask & jit_cc_a2_reg)
1731 node->w.w &= ~jit_regno_patch;
1732 if (node->code == jit_code_prolog)
1733 _jitc->function = _jitc->functions.ptr + node->w.w;
1734 else if(node->code == jit_code_epilog)
1735 _jitc->function = NULL;
1738 if (mask & jit_cc_a0_flt) {
1739 node->u.p = jit_data(&node->u.f, sizeof(jit_float32_t), 4);
1740 node->flag |= jit_flag_node | jit_flag_data;
1742 else if (mask & jit_cc_a0_dbl) {
1743 node->u.p = jit_data(&node->u.d, sizeof(jit_float64_t), 8);
1744 node->flag |= jit_flag_node | jit_flag_data;
1746 else if (mask & jit_cc_a1_flt) {
1747 node->v.p = jit_data(&node->v.f, sizeof(jit_float32_t), 4);
1748 node->flag |= jit_flag_node | jit_flag_data;
1750 else if (mask & jit_cc_a1_dbl) {
1751 node->v.p = jit_data(&node->v.d, sizeof(jit_float64_t), 8);
1752 node->flag |= jit_flag_node | jit_flag_data;
1754 else if (mask & jit_cc_a2_flt) {
1755 node->w.p = jit_data(&node->w.f, sizeof(jit_float32_t), 4);
1756 node->flag |= jit_flag_node | jit_flag_data;
1758 else if (mask & jit_cc_a2_dbl) {
1759 node->w.p = jit_data(&node->w.d, sizeof(jit_float64_t), 8);
1760 node->flag |= jit_flag_node | jit_flag_data;
1763 if (_jitc->function) {
1764 if ((mask & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
1765 (jit_cc_a0_reg|jit_cc_a0_chg)) {
1766 if (mask & jit_cc_a0_rlh) {
1767 jit_regset_setbit(&_jitc->function->regset,
1768 jit_regno(node->u.q.l));
1769 jit_regset_setbit(&_jitc->function->regset,
1770 jit_regno(node->u.q.h));
1773 jit_regset_setbit(&_jitc->function->regset,
1774 jit_regno(node->u.w));
1776 if ((mask & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
1777 (jit_cc_a1_reg|jit_cc_a1_chg))
1778 jit_regset_setbit(&_jitc->function->regset,
1779 jit_regno(node->v.w));
1780 if ((mask & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
1781 (jit_cc_a2_reg|jit_cc_a2_chg))
1782 jit_regset_setbit(&_jitc->function->regset,
1783 jit_regno(node->w.w));
1790 _jit_reglive(jit_state_t *_jit, jit_node_t *node)
1796 switch (node->code) {
1797 case jit_code_label: case jit_code_prolog: case jit_code_epilog:
1798 block = _jitc->blocks.ptr + node->v.w;
1799 jit_regset_set(&_jitc->reglive, &block->reglive);
1801 case jit_code_callr:
1802 value = jit_regno(node->u.w);
1803 if (!(node->u.w & jit_regno_patch)) {
1804 jit_regset_setbit(&_jitc->reglive, value);
1806 case jit_code_calli:
1807 for (value = 0; value < _jitc->reglen; value++) {
1808 spec = jit_class(_rvs[value].spec);
1809 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
1810 jit_regset_setbit(&_jitc->reglive, value);
1811 else if (!(spec & jit_class_sav))
1812 jit_regset_clrbit(&_jitc->reglive, value);
1816 value = jit_classify(node->code);
1817 if (value & jit_cc_a0_reg) {
1818 if (value & jit_cc_a0_rlh) {
1819 if (!(node->u.q.l & jit_regno_patch)) {
1820 if (value & jit_cc_a0_chg) {
1821 jit_regset_clrbit(&_jitc->reglive, node->u.q.l);
1822 jit_regset_setbit(&_jitc->regmask, node->u.q.l);
1825 jit_regset_setbit(&_jitc->reglive, node->u.q.l);
1827 if (!(node->u.q.h & jit_regno_patch)) {
1828 if (value & jit_cc_a0_chg) {
1829 jit_regset_clrbit(&_jitc->reglive, node->u.q.h);
1830 jit_regset_setbit(&_jitc->regmask, node->u.q.h);
1833 jit_regset_setbit(&_jitc->reglive, node->u.q.h);
1837 if (!(node->u.w & jit_regno_patch)) {
1838 if (value & jit_cc_a0_chg) {
1839 jit_regset_clrbit(&_jitc->reglive, node->u.w);
1840 jit_regset_setbit(&_jitc->regmask, node->u.w);
1843 jit_regset_setbit(&_jitc->reglive, node->u.w);
1847 if ((value & jit_cc_a1_reg) && !(node->v.w & jit_regno_patch)) {
1848 if (value & jit_cc_a1_chg) {
1849 jit_regset_clrbit(&_jitc->reglive, node->v.w);
1850 jit_regset_setbit(&_jitc->regmask, node->v.w);
1853 jit_regset_setbit(&_jitc->reglive, node->v.w);
1855 if (value & jit_cc_a2_reg) {
1856 if (value & jit_cc_a2_rlh) {
1857 /* Assume registers are not changed */
1858 if (!(node->w.q.l & jit_regno_patch))
1859 jit_regset_setbit(&_jitc->reglive, node->w.q.l);
1860 if (!(node->w.q.h & jit_regno_patch))
1861 jit_regset_setbit(&_jitc->reglive, node->w.q.h);
1864 if (!(node->w.w & jit_regno_patch)) {
1865 if (value & jit_cc_a2_chg) {
1866 jit_regset_clrbit(&_jitc->reglive, node->w.w);
1867 jit_regset_setbit(&_jitc->regmask, node->w.w);
1870 jit_regset_setbit(&_jitc->reglive, node->w.w);
1874 if (jit_regset_set_p(&_jitc->regmask)) {
1875 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
1876 if (jit_regset_set_p(&_jitc->regmask)) {
1877 /* any unresolved live state is considered as live */
1878 jit_regset_ior(&_jitc->reglive,
1879 &_jitc->reglive, &_jitc->regmask);
1880 jit_regset_set_ui(&_jitc->regmask, 0);
1888 _jit_regarg_set(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
1893 if (value & jit_cc_a0_reg) {
1894 if (value & jit_cc_a0_rlh) {
1895 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.l));
1896 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.h));
1899 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.w));
1901 if (value & jit_cc_a1_reg)
1902 jit_regset_setbit(&_jitc->regarg, jit_regno(node->v.w));
1903 if (value & jit_cc_a2_reg) {
1904 if (value & jit_cc_a2_rlh) {
1905 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.l));
1906 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.q.h));
1909 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.w));
1914 _jit_regarg_clr(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
1917 jit_size_collect(node);
1919 if (value & jit_cc_a0_reg) {
1920 if (value & jit_cc_a0_rlh) {
1921 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.l));
1922 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.h));
1925 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.w));
1927 if (value & jit_cc_a1_reg)
1928 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->v.w));
1929 if (value & jit_cc_a2_reg) {
1930 if (value & jit_cc_a2_rlh) {
1931 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.l));
1932 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.q.h));
1935 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.w));
1940 _jit_realize(jit_state_t *_jit)
1942 assert(!_jitc->realize);
1943 if (_jitc->function)
1948 /* ensure it is aligned */
1949 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
1952 /* Heuristic to guess code buffer size */
1954 _jit->code.length = _jitc->pool.length * 1024 * _jitc->mult;
1956 _jit->code.length = jit_get_size();
1961 _jit_dataset(jit_state_t *_jit)
1970 assert(!_jitc->dataset);
1972 assert(_jit->user_data);
1974 if (!_jit->user_data) {
1976 /* create read only data buffer */
1977 _jit->data.length = (_jitc->data.offset +
1978 /* reserve space for annotations */
1979 _jitc->note.size + 4095) & -4096;
1981 mmap_fd = open("/dev/zero", O_RDWR);
1983 _jit->data.ptr = mmap(NULL, _jit->data.length,
1984 PROT_READ | PROT_WRITE,
1985 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
1986 assert(_jit->data.ptr != MAP_FAILED);
1991 #endif /* !HAVE_MMAP */
1993 if (!_jitc->no_data)
1994 jit_memcpy(_jit->data.ptr, _jitc->data.ptr, _jitc->data.offset);
1996 if (_jitc->no_note) {
1997 /* Space for one note is always allocated, so revert it here
1998 * if after jit_new_state was called, it is also requested to
1999 * not generate annotation information */
2000 _jit->note.length = 0;
2001 _jitc->note.size = 0;
2004 _jitc->note.base = _jit->data.ptr;
2005 if (!_jitc->no_data)
2006 _jitc->note.base += _jitc->data.offset;
2007 memset(_jitc->note.base, 0, _jitc->note.size);
2010 if (_jit->user_data)
2011 /* Need the temporary hashed data until jit_emit is finished */
2012 ptr = _jitc->no_data ? _jitc->data.ptr : _jit->data.ptr;
2014 ptr = _jit->data.ptr;
2015 /* Temporary hashed data no longer required */
2016 jit_free((jit_pointer_t *)&_jitc->data.ptr);
2019 for (offset = 0; offset < _jitc->data.size; offset++) {
2020 for (node = _jitc->data.table[offset]; node; node = node->next) {
2021 node->flag |= jit_flag_patch;
2022 node->u.w = (jit_word_t)(ptr + node->u.w);
2030 _jit_get_code(jit_state_t *_jit, jit_word_t *length)
2032 assert(_jitc->realize);
2035 /* If code already generated, return exact size of code */
2036 *length = _jit->pc.uc - _jit->code.ptr;
2038 /* Else return current size of the code buffer */
2039 *length = _jit->code.length;
2042 return (_jit->code.ptr);
2046 _jit_set_code(jit_state_t *_jit, jit_pointer_t ptr, jit_word_t length)
2048 assert(_jitc->realize);
2049 _jit->code.ptr = ptr;
2050 _jit->code.length = length;
2051 _jit->user_code = 1;
2055 _jit_get_data(jit_state_t *_jit, jit_word_t *data_size, jit_word_t *note_size)
2057 assert(_jitc->realize);
2059 *data_size = _jitc->data.offset;
2061 *note_size = _jitc->note.size;
2062 return (_jit->data.ptr);
2066 _jit_set_data(jit_state_t *_jit, jit_pointer_t ptr,
2067 jit_word_t length, jit_word_t flags)
2069 assert(_jitc->realize);
2070 if (flags & JIT_DISABLE_DATA)
2073 assert(length >= _jitc->data.offset);
2074 if (flags & JIT_DISABLE_NOTE)
2077 if (flags & JIT_DISABLE_DATA)
2078 assert(length >= _jitc->note.size);
2080 assert(length >= _jitc->data.offset + _jitc->note.size);
2082 _jit->data.ptr = ptr;
2083 _jit->data.length = length;
2084 _jit->user_data = 1;
2088 _jit_emit(jit_state_t *_jit)
2098 if (!_jitc->realize)
2101 if (!_jitc->dataset)
2107 assert(_jit->user_code);
2109 if (!_jit->user_code) {
2111 mmap_fd = open("/dev/zero", O_RDWR);
2113 _jit->code.ptr = mmap(NULL, _jit->code.length,
2114 PROT_EXEC | PROT_READ | PROT_WRITE,
2115 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2116 assert(_jit->code.ptr != MAP_FAILED);
2118 #endif /* !HAVE_MMAP */
2119 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2120 jit_get_max_instr();
2121 _jit->pc.uc = _jit->code.ptr;
2124 if ((code = emit_code()) == NULL) {
2125 _jitc->patches.offset = 0;
2126 for (node = _jitc->head; node; node = node->next) {
2128 (node->code == jit_code_label ||
2129 node->code == jit_code_epilog))
2130 node->flag &= ~jit_flag_patch;
2133 assert(_jit->user_code);
2135 if (_jit->user_code)
2139 length = _jitc->pool.length * 1024 * _jitc->mult;
2141 /* Should only happen on very special cases */
2142 length = _jit->code.length + 4096;
2146 munmap(_jit->code.ptr, _jit->code.length);
2151 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2152 _jit->code.ptr, length, 0);
2154 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2155 length, MREMAP_MAYMOVE, NULL);
2158 _jit->code.ptr = mmap(NULL, length,
2159 PROT_EXEC | PROT_READ | PROT_WRITE,
2160 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2163 assert(_jit->code.ptr != MAP_FAILED);
2164 _jit->code.length = length;
2165 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2166 jit_get_max_instr();
2167 _jit->pc.uc = _jit->code.ptr;
2168 #endif /* !HAVE_MMAP */
2175 if (!_jit->user_code)
2180 if (!_jitc->no_note)
2183 if (_jit->user_data)
2184 jit_free((jit_pointer_t *)&_jitc->data.ptr);
2187 result = mprotect(_jit->data.ptr, _jit->data.length, PROT_READ);
2188 assert(result == 0);
2190 if (!_jit->user_code) {
2191 result = mprotect(_jit->code.ptr, _jit->code.length,
2192 PROT_READ | PROT_EXEC);
2193 assert(result == 0);
2195 #endif /* HAVE_MMAP */
2197 return (_jit->code.ptr);
2203 _jit_frame(jit_state_t *_jit, jit_int32_t frame)
2205 jit_trampoline(frame, 1);
2209 _jit_tramp(jit_state_t *_jit, jit_int32_t frame)
2211 jit_trampoline(frame, 0);
2215 _jit_trampoline(jit_state_t *_jit, jit_int32_t frame, jit_bool_t prolog)
2219 /* Must be called after prolog, actually, just to simplify
2220 * tests and know there is a current function and that
2221 * _jitc->function->self.aoff is at the before any alloca value */
2222 assert(_jitc->tail && _jitc->tail->code == jit_code_prolog);
2224 /* + 24 for 3 possible spilled temporaries (that could be a double) */
2226 #if defined(__hppa__)
2227 frame += _jitc->function->self.aoff;
2229 frame -= _jitc->function->self.aoff;
2231 _jitc->function->frame = frame;
2233 _jitc->function->define_frame = 1;
2235 _jitc->function->assume_frame = 1;
2236 for (regno = 0; regno < _jitc->reglen; regno++)
2237 if (jit_class(_rvs[regno].spec) & jit_class_sav)
2238 jit_regset_setbit(&_jitc->function->regset, regno);
2241 /* Compute initial reglive and regmask set values of a basic block.
2242 * reglive is the set of known live registers
2243 * regmask is the set of registers not referenced in the block
2244 * Registers in regmask might be live.
2247 _jit_setup(jit_state_t *_jit, jit_block_t *block)
2251 unsigned long value;
2253 jit_regset_set_mask(&block->regmask, _jitc->reglen);
2254 for (value = 0; value < _jitc->reglen; ++value)
2255 if (!(jit_class(_rvs[value].spec) & (jit_class_gpr|jit_class_fpr)))
2256 jit_regset_clrbit(&block->regmask, value);
2258 for (node = block->label->next; node; node = node->next) {
2259 switch (node->code) {
2260 case jit_code_label: case jit_code_prolog:
2261 case jit_code_epilog:
2264 /* Check argument registers in reverse order to properly
2265 * handle registers that are both, argument and result */
2266 value = jit_classify(node->code);
2267 if ((value & jit_cc_a2_reg) &&
2268 !(node->w.w & jit_regno_patch) &&
2269 jit_regset_tstbit(&block->regmask, node->w.w)) {
2270 live = !(value & jit_cc_a2_chg);
2271 jit_regset_clrbit(&block->regmask, node->w.w);
2273 jit_regset_setbit(&block->reglive, node->w.w);
2275 if ((value & jit_cc_a1_reg) &&
2276 !(node->v.w & jit_regno_patch) &&
2277 jit_regset_tstbit(&block->regmask, node->v.w)) {
2278 live = !(value & jit_cc_a1_chg);
2279 jit_regset_clrbit(&block->regmask, node->v.w);
2281 jit_regset_setbit(&block->reglive, node->v.w);
2283 if (value & jit_cc_a0_reg) {
2284 live = !(value & jit_cc_a0_chg);
2285 if (value & jit_cc_a0_rlh) {
2286 if (!(node->u.q.l & jit_regno_patch) &&
2287 jit_regset_tstbit(&block->regmask, node->u.q.l)) {
2288 jit_regset_clrbit(&block->regmask, node->u.q.l);
2290 jit_regset_setbit(&block->reglive, node->u.q.l);
2292 if (!(node->u.q.h & jit_regno_patch) &&
2293 jit_regset_tstbit(&block->regmask, node->u.q.h)) {
2294 jit_regset_clrbit(&block->regmask, node->u.q.h);
2296 jit_regset_setbit(&block->reglive, node->u.q.h);
2300 if (!(node->u.w & jit_regno_patch) &&
2301 jit_regset_tstbit(&block->regmask, node->u.w)) {
2302 jit_regset_clrbit(&block->regmask, node->u.w);
2304 jit_regset_setbit(&block->reglive, node->u.w);
2313 /* Update regmask and reglive of blocks at entry point of branch targets
2314 * or normal flow that have a live register not used in this block.
2317 _jit_follow(jit_state_t *_jit, jit_block_t *block, jit_bool_t *todo)
2323 unsigned long value;
2325 jit_regset_t reglive;
2326 jit_regset_t regmask;
2327 jit_regset_t regtemp;
2329 jit_regset_set(®live, &block->reglive);
2330 jit_regset_set(®mask, &block->regmask);
2331 for (node = block->label->next; node; node = node->next) {
2332 switch (node->code) {
2333 case jit_code_label:
2334 /* Do not consider jmpi and jmpr cannot jump to the
2335 * next instruction. */
2336 next = _jitc->blocks.ptr + node->v.w;
2337 /* Set of live registers in next block that are at unknown
2338 * state in this block. */
2339 jit_regset_and(®temp, ®mask, &next->reglive);
2340 if (jit_regset_set_p(®temp)) {
2341 /* Add live state of next block to current block. */
2342 jit_regset_ior(&block->reglive, &block->reglive, ®temp);
2343 /* Remove from unknown state bitmask. */
2344 jit_regset_com(®temp, ®temp);
2345 jit_regset_and(&block->regmask, &block->regmask, ®temp);
2348 case jit_code_prolog:
2349 case jit_code_epilog:
2351 case jit_code_callr:
2352 value = jit_regno(node->u.w);
2353 if (!(node->u.w & jit_regno_patch)) {
2354 if (jit_regset_tstbit(®mask, value)) {
2355 jit_regset_clrbit(®mask, value);
2356 jit_regset_setbit(®live, value);
2359 case jit_code_calli:
2360 for (value = 0; value < _jitc->reglen; ++value) {
2361 value = jit_regset_scan1(®mask, value);
2362 if (value >= _jitc->reglen)
2364 spec = jit_class(_rvs[value].spec);
2365 if (!(spec & jit_class_sav))
2366 jit_regset_clrbit(®mask, value);
2367 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2368 jit_regset_setbit(®live, value);
2372 value = jit_classify(node->code);
2373 if (value & jit_cc_a2_reg) {
2374 if (value & jit_cc_a2_rlh) {
2375 if (!(node->w.q.l & jit_regno_patch)) {
2376 /* Assume register is not changed */
2377 if (jit_regset_tstbit(®mask, node->w.q.l))
2378 jit_regset_clrbit(®mask, node->w.q.l);
2380 if (!(node->w.q.h & jit_regno_patch)) {
2381 if (jit_regset_tstbit(®mask, node->w.q.h))
2382 jit_regset_clrbit(®mask, node->w.q.h);
2386 if (value & jit_cc_a2_reg) {
2387 if (!(node->w.w & jit_regno_patch)) {
2388 if (jit_regset_tstbit(®mask, node->w.w)) {
2389 jit_regset_clrbit(®mask, node->w.w);
2390 if (!(value & jit_cc_a2_chg))
2391 jit_regset_setbit(®live, node->w.w);
2397 if (value & jit_cc_a1_reg) {
2398 if (!(node->v.w & jit_regno_patch)) {
2399 if (jit_regset_tstbit(®mask, node->v.w)) {
2400 jit_regset_clrbit(®mask, node->v.w);
2401 if (!(value & jit_cc_a1_chg))
2402 jit_regset_setbit(®live, node->v.w);
2406 if (value & jit_cc_a0_reg) {
2407 if (value & jit_cc_a0_rlh) {
2408 if (!(node->u.q.l & jit_regno_patch)) {
2409 if (jit_regset_tstbit(®mask, node->u.q.l)) {
2410 jit_regset_clrbit(®mask, node->u.q.l);
2411 if (!(value & jit_cc_a0_chg))
2412 jit_regset_setbit(®live, node->u.q.l);
2415 if (!(node->u.q.h & jit_regno_patch)) {
2416 if (jit_regset_tstbit(®mask, node->u.q.h)) {
2417 jit_regset_clrbit(®mask, node->u.q.h);
2418 if (!(value & jit_cc_a0_chg))
2419 jit_regset_setbit(®live, node->u.q.h);
2424 if (!(node->u.w & jit_regno_patch)) {
2425 if (jit_regset_tstbit(®mask, node->u.w)) {
2426 jit_regset_clrbit(®mask, node->u.w);
2427 if (!(value & jit_cc_a0_chg))
2428 jit_regset_setbit(®live, node->u.w);
2433 if (value & jit_cc_a0_jmp) {
2434 if (node->flag & jit_flag_node) {
2436 /* Do not consider jmpi and jmpr cannot jump to the
2437 * next instruction. */
2438 next = _jitc->blocks.ptr + label->v.w;
2439 jit_regset_and(®temp, ®mask, &next->reglive);
2440 if (jit_regset_set_p(®temp)) {
2441 /* Add live state. */
2442 jit_regset_ior(&block->reglive,
2443 &block->reglive, ®temp);
2444 /* Remove from unknown state bitmask. */
2445 jit_regset_com(®temp, ®temp);
2446 jit_regset_and(&block->regmask,
2447 &block->regmask, ®temp);
2452 /* Jump to unknown location.
2453 * This is a pitfall of the implementation.
2454 * Only jmpi to not a jit code should reach here,
2455 * or a jmpr of a computed address.
2456 * Because the implementation needs jit_class_nospill
2457 * registers, must treat jmpr as a function call. This
2458 * means that only JIT_Vn registers can be trusted on
2461 jit_regset_set_ui(®mask, 0);
2462 for (regno = 0; regno < _jitc->reglen; regno++) {
2463 spec = jit_class(_rvs[regno].spec);
2464 if ((spec & (jit_class_gpr|jit_class_fpr)) &&
2465 (spec & jit_class_sav))
2466 jit_regset_setbit(®mask, regno);
2468 /* Assume non callee save registers are live due
2469 * to jump to unknown location. */
2470 /* Treat all callee save as live. */
2471 jit_regset_ior(&block->reglive, ®live, ®mask);
2472 /* Treat anything else as dead. */
2481 /* Follow code generation up to finding a label or end of code.
2482 * When finding a label, update the set of live registers.
2483 * On branches, update based on taken branch or normal flow.
2486 _jit_update(jit_state_t *_jit, jit_node_t *node,
2487 jit_regset_t *live, jit_regset_t *mask)
2491 unsigned long value;
2494 jit_regset_t regtemp;
2496 for (; node; node = node->next) {
2497 if (jit_regset_set_p(mask) == 0)
2499 switch (node->code) {
2500 case jit_code_label:
2501 block = _jitc->blocks.ptr + node->v.w;
2502 jit_regset_and(®temp, mask, &block->reglive);
2503 if (jit_regset_set_p(®temp)) {
2504 /* Add live state. */
2505 jit_regset_ior(live, live, ®temp);
2506 /* Remove from unknown state bitmask. */
2507 jit_regset_com(®temp, ®temp);
2508 jit_regset_and(mask, mask, ®temp);
2511 case jit_code_prolog:
2512 jit_regset_set_ui(mask, 0);
2514 case jit_code_epilog:
2515 jit_regset_set_ui(mask, 0);
2517 case jit_code_callr:
2518 value = jit_regno(node->u.w);
2519 if (!(node->u.w & jit_regno_patch)) {
2520 if (jit_regset_tstbit(mask, value)) {
2521 jit_regset_clrbit(mask, value);
2522 jit_regset_setbit(live, value);
2525 case jit_code_calli:
2526 for (value = 0; value < _jitc->reglen; ++value) {
2527 value = jit_regset_scan1(mask, value);
2528 if (value >= _jitc->reglen)
2530 spec = jit_class(_rvs[value].spec);
2531 if (!(spec & jit_class_sav))
2532 jit_regset_clrbit(mask, value);
2533 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2534 jit_regset_setbit(live, value);
2538 value = jit_classify(node->code);
2539 if (value & jit_cc_a2_reg) {
2540 if (value & jit_cc_a2_rlh) {
2541 if (!(node->w.q.l & jit_regno_patch)) {
2542 /* Assume register is not changed */
2543 if (jit_regset_tstbit(mask, node->w.q.l))
2544 jit_regset_clrbit(mask, node->w.q.l);
2546 if (!(node->w.q.h & jit_regno_patch)) {
2547 if (jit_regset_tstbit(mask, node->w.q.h))
2548 jit_regset_clrbit(mask, node->w.q.h);
2552 if (!(node->w.w & jit_regno_patch)) {
2553 if (jit_regset_tstbit(mask, node->w.w)) {
2554 jit_regset_clrbit(mask, node->w.w);
2555 if (!(value & jit_cc_a2_chg))
2556 jit_regset_setbit(live, node->w.w);
2561 if (value & jit_cc_a1_reg) {
2562 if (!(node->v.w & jit_regno_patch)) {
2563 if (jit_regset_tstbit(mask, node->v.w)) {
2564 jit_regset_clrbit(mask, node->v.w);
2565 if (!(value & jit_cc_a1_chg))
2566 jit_regset_setbit(live, node->v.w);
2570 if (value & jit_cc_a0_reg) {
2571 if (value & jit_cc_a0_rlh) {
2572 if (!(node->u.q.l & jit_regno_patch)) {
2573 if (jit_regset_tstbit(mask, node->u.q.l)) {
2574 jit_regset_clrbit(mask, node->u.q.l);
2575 if (!(value & jit_cc_a0_chg))
2576 jit_regset_setbit(live, node->u.q.l);
2579 if (!(node->u.q.h & jit_regno_patch)) {
2580 if (jit_regset_tstbit(mask, node->u.q.h)) {
2581 jit_regset_clrbit(mask, node->u.q.h);
2582 if (!(value & jit_cc_a0_chg))
2583 jit_regset_setbit(live, node->u.q.h);
2588 if (!(node->u.w & jit_regno_patch)) {
2589 if (jit_regset_tstbit(mask, node->u.w)) {
2590 jit_regset_clrbit(mask, node->u.w);
2591 if (!(value & jit_cc_a0_chg))
2592 jit_regset_setbit(live, node->u.w);
2597 if (value & jit_cc_a0_jmp) {
2598 if (node->flag & jit_flag_node) {
2600 /* Do not consider jmpi and jmpr cannot jump to the
2601 * next instruction. */
2602 block = _jitc->blocks.ptr + label->v.w;
2603 jit_regset_and(®temp, mask, &block->reglive);
2604 if (jit_regset_set_p(®temp)) {
2605 /* Add live state. */
2606 jit_regset_ior(live, live, ®temp);
2607 /* Remove from unknown state bitmask. */
2608 jit_regset_com(®temp, ®temp);
2609 jit_regset_and(mask, mask, ®temp);
2613 /* Jump to unknown location.
2614 * This is a pitfall of the implementation.
2615 * Only jmpi to not a jit code should reach here,
2616 * or a jmpr of a computed address.
2617 * Because the implementation needs jit_class_nospill
2618 * registers, must treat jmpr as a function call. This
2619 * means that only JIT_Vn registers can be trusted on
2622 jit_regset_set_ui(mask, 0);
2623 for (regno = 0; regno < _jitc->reglen; regno++) {
2624 spec = jit_class(_rvs[regno].spec);
2625 if ((spec & (jit_class_gpr|jit_class_fpr)) &&
2626 (spec & jit_class_sav))
2627 jit_regset_setbit(mask, regno);
2629 /* Assume non callee save registers are live due
2630 * to jump to unknown location. */
2631 /* Treat all callee save as live. */
2632 jit_regset_ior(live, live, mask);
2633 /* Treat anything else as dead. */
2643 _thread_jumps(jit_state_t *_jit)
2650 for (prev = node = _jitc->head; node;) {
2652 switch (node->code) {
2654 if (redundant_jump(prev, node)) {
2658 if (shortcut_jump(prev, node))
2662 case jit_code_callr: case jit_code_calli:
2663 /* non optimizable jump like code */
2666 mask = jit_classify(node->code);
2667 if (mask & jit_cc_a0_jmp) {
2668 if (reverse_jump(prev, node) ||
2669 shortcut_jump(prev, node))
2680 _sequential_labels(jit_state_t *_jit)
2688 for (prev = node = _jitc->head; node; node = next) {
2690 if (node->code == jit_code_label) {
2693 del_label(prev, node);
2696 if (prev != node && prev->code == jit_code_label) {
2697 if ((jump = node->link)) {
2698 for (; jump; jump = link) {
2701 jump->link = prev->link;
2706 del_label(prev, node);
2710 if (next && next->code == jit_code_label && !next->flag) {
2711 if ((jump = next->link)) {
2712 for (; jump; jump = link) {
2715 jump->link = node->link;
2720 del_label(node, next);
2730 _split_branches(jit_state_t *_jit)
2737 for (node = _jitc->head; node; node = next) {
2738 if ((next = node->next)) {
2739 if (next->code == jit_code_label ||
2740 next->code == jit_code_prolog ||
2741 next->code == jit_code_epilog)
2743 /* split block on branches */
2744 if (jit_classify(node->code) & jit_cc_a0_jmp) {
2745 label = new_node(jit_code_label);
2748 if (_jitc->blocks.offset >= _jitc->blocks.length) {
2751 length = _jitc->blocks.length + 16;
2752 jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr,
2753 _jitc->blocks.length * sizeof(jit_block_t),
2754 length * sizeof(jit_block_t));
2755 _jitc->blocks.length = length;
2757 block = _jitc->blocks.ptr + _jitc->blocks.offset;
2758 block->label = label;
2759 label->v.w = _jitc->blocks.offset;
2760 jit_regset_new(&block->reglive);
2761 jit_regset_new(&block->regmask);
2762 ++_jitc->blocks.offset;
2769 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2776 if (!(node->flag & jit_flag_node))
2778 assert(node->code != jit_code_jmpr);
2779 cond = node->code != jit_code_jmpi;
2781 for (next = jump->next; next; next = next->next) {
2782 switch (next->code) {
2784 if (!(next->flag & jit_flag_node))
2786 if (jump->link == node)
2787 jump->link = node->link;
2789 for (temp = jump->link;
2792 assert(temp != NULL);
2793 temp->link = node->link;
2797 node->link = jump->link;
2803 node->code = jit_code_jmpr;
2804 node->u.w = next->u.w;
2806 node->flag &= ~jit_flag_node;
2808 case jit_code_note: case jit_code_label:
2818 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2820 jit_node_t *local_prev;
2821 jit_node_t *local_next;
2823 if (!(node->flag & jit_flag_node))
2825 for (local_prev = node, local_next = node->next;
2827 local_prev = local_next, local_next = local_next->next) {
2829 switch (local_next->code) {
2830 case jit_code_label: case jit_code_epilog:
2831 if (node->u.n == local_next) {
2832 if (local_next->link == node)
2833 local_next->link = node->link;
2835 for (local_prev = local_next->link;
2836 local_prev->link != node;
2837 local_prev = local_prev->link)
2838 assert(local_prev != NULL);
2839 local_prev->link = node->link;
2841 del_node(prev, node);
2845 case jit_code_name: case jit_code_note:
2846 case jit_code_align:
2856 reverse_jump_code(jit_code_t code)
2859 case jit_code_bltr: return (jit_code_bger);
2860 case jit_code_blti: return (jit_code_bgei);
2861 case jit_code_bltr_u: return (jit_code_bger_u);
2862 case jit_code_blti_u: return (jit_code_bgei_u);
2863 case jit_code_bler: return (jit_code_bgtr);
2864 case jit_code_blei: return (jit_code_bgti);
2865 case jit_code_bler_u: return (jit_code_bgtr_u);
2866 case jit_code_blei_u: return (jit_code_bgti_u);
2867 case jit_code_beqr: return (jit_code_bner);
2868 case jit_code_beqi: return (jit_code_bnei);
2869 case jit_code_bger: return (jit_code_bltr);
2870 case jit_code_bgei: return (jit_code_blti);
2871 case jit_code_bger_u: return (jit_code_bltr_u);
2872 case jit_code_bgei_u: return (jit_code_blti_u);
2873 case jit_code_bgtr: return (jit_code_bler);
2874 case jit_code_bgti: return (jit_code_blei);
2875 case jit_code_bgtr_u: return (jit_code_bler_u);
2876 case jit_code_bgti_u: return (jit_code_blei_u);
2877 case jit_code_bner: return (jit_code_beqr);
2878 case jit_code_bnei: return (jit_code_beqi);
2879 case jit_code_bmsr: return (jit_code_bmcr);
2880 case jit_code_bmsi: return (jit_code_bmci);
2881 case jit_code_bmcr: return (jit_code_bmsr);
2882 case jit_code_bmci: return (jit_code_bmsi);
2883 case jit_code_bltr_f: return (jit_code_bunger_f);
2884 case jit_code_blti_f: return (jit_code_bungei_f);
2885 case jit_code_bler_f: return (jit_code_bungtr_f);
2886 case jit_code_blei_f: return (jit_code_bungti_f);
2888 case jit_code_beqr_f: return (jit_code_bner_f);
2889 case jit_code_beqi_f: return (jit_code_bnei_f);
2891 case jit_code_bger_f: return (jit_code_bunltr_f);
2892 case jit_code_bgei_f: return (jit_code_bunlti_f);
2893 case jit_code_bgtr_f: return (jit_code_bunler_f);
2894 case jit_code_bgti_f: return (jit_code_bunlei_f);
2896 case jit_code_bner_f: return (jit_code_beqr_f);
2897 case jit_code_bnei_f: return (jit_code_beqr_f);
2899 case jit_code_bunltr_f: return (jit_code_bger_f);
2900 case jit_code_bunlti_f: return (jit_code_bgei_f);
2901 case jit_code_bunler_f: return (jit_code_bgtr_f);
2902 case jit_code_bunlei_f: return (jit_code_bgti_f);
2904 case jit_code_buneqr_f: return (jit_code_bltgtr_f);
2905 case jit_code_buneqi_f: return (jit_code_bltgti_f);
2907 case jit_code_bunger_f: return (jit_code_bltr_f);
2908 case jit_code_bungei_f: return (jit_code_blti_f);
2909 case jit_code_bungtr_f: return (jit_code_bler_f);
2910 case jit_code_bungti_f: return (jit_code_blei_f);
2912 case jit_code_bltgtr_f: return (jit_code_buneqr_f);
2913 case jit_code_bltgti_f: return (jit_code_buneqi_f);
2915 case jit_code_bordr_f: return (jit_code_bunordr_f);
2916 case jit_code_bordi_f: return (jit_code_bunordi_f);
2917 case jit_code_bunordr_f:return (jit_code_bordr_f);
2918 case jit_code_bunordi_f:return (jit_code_bordi_f);
2919 case jit_code_bltr_d: return (jit_code_bunger_d);
2920 case jit_code_blti_d: return (jit_code_bungei_d);
2921 case jit_code_bler_d: return (jit_code_bungtr_d);
2922 case jit_code_blei_d: return (jit_code_bungti_d);
2924 case jit_code_beqr_d: return (jit_code_bner_d);
2925 case jit_code_beqi_d: return (jit_code_bnei_d);
2927 case jit_code_bger_d: return (jit_code_bunltr_d);
2928 case jit_code_bgei_d: return (jit_code_bunlti_d);
2929 case jit_code_bgtr_d: return (jit_code_bunler_d);
2930 case jit_code_bgti_d: return (jit_code_bunlei_d);
2932 case jit_code_bner_d: return (jit_code_beqr_d);
2933 case jit_code_bnei_d: return (jit_code_beqi_d);
2935 case jit_code_bunltr_d: return (jit_code_bger_d);
2936 case jit_code_bunlti_d: return (jit_code_bgei_d);
2937 case jit_code_bunler_d: return (jit_code_bgtr_d);
2938 case jit_code_bunlei_d: return (jit_code_bgti_d);
2940 case jit_code_buneqr_d: return (jit_code_bltgtr_d);
2941 case jit_code_buneqi_d: return (jit_code_bltgti_d);
2943 case jit_code_bunger_d: return (jit_code_bltr_d);
2944 case jit_code_bungei_d: return (jit_code_blti_d);
2945 case jit_code_bungtr_d: return (jit_code_bler_d);
2946 case jit_code_bungti_d: return (jit_code_blei_d);
2948 case jit_code_bltgtr_d: return (jit_code_buneqr_d);
2949 case jit_code_bltgti_d: return (jit_code_buneqi_d);
2951 case jit_code_bordr_d: return (jit_code_bunordr_d);
2952 case jit_code_bordi_d: return (jit_code_bunordi_d);
2953 case jit_code_bunordr_d:return (jit_code_bordr_d);
2954 case jit_code_bunordi_d:return (jit_code_bordi_d);
2955 case jit_code_boaddr: return (jit_code_bxaddr);
2956 case jit_code_boaddi: return (jit_code_bxaddi);
2957 case jit_code_boaddr_u: return (jit_code_bxaddr_u);
2958 case jit_code_boaddi_u: return (jit_code_bxaddi_u);
2959 case jit_code_bxaddr: return (jit_code_boaddr);
2960 case jit_code_bxaddi: return (jit_code_boaddi);
2961 case jit_code_bxaddr_u: return (jit_code_boaddr_u);
2962 case jit_code_bxaddi_u: return (jit_code_boaddi_u);
2963 case jit_code_bosubr: return (jit_code_bxsubr);
2964 case jit_code_bosubi: return (jit_code_bxsubi);
2965 case jit_code_bosubr_u: return (jit_code_bxsubr_u);
2966 case jit_code_bosubi_u: return (jit_code_bxsubi_u);
2967 case jit_code_bxsubr: return (jit_code_bosubr);
2968 case jit_code_bxsubi: return (jit_code_bosubi);
2969 case jit_code_bxsubr_u: return (jit_code_bosubr_u);
2970 case jit_code_bxsubi_u: return (jit_code_bosubi_u);
2971 default: abort(); /* invalid jump code */
2976 * change common pattern:
2977 * <cond_jump L0> <jump L1> <label L0>
2979 * <reverse_cond_jump L1>
2982 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2984 jit_node_t *local_prev;
2985 jit_node_t *local_next;
2986 jit_node_t *local_jump;
2988 if (!(node->flag & jit_flag_node))
2990 /* =><cond_jump L0> <jump L1> <label L0> */
2991 local_next = node->next;
2992 if (local_next->code != jit_code_jmpi ||
2993 !(local_next->flag & jit_flag_node))
2995 /* <cond_jump L0> =><jump L1> <label L0> */
2997 local_jump = local_next->u.n;
2998 for (local_prev = local_next, local_next = local_next->next;
3000 local_prev = local_next, local_next = local_next->next) {
3001 switch (local_next->code) {
3002 case jit_code_label: case jit_code_epilog:
3003 if (node->u.n == local_next) {
3004 if (local_next->link == node)
3005 local_next->link = node->link;
3007 for (local_prev = local_next->link;
3008 local_prev->link != node;
3009 local_prev = local_prev->link)
3010 assert(local_prev != NULL);
3011 local_prev->link = node->link;
3013 del_node(node, node->next);
3014 node->code = reverse_jump_code(node->code);
3015 node->u.n = local_jump;
3016 node->link = local_jump->link;
3017 local_jump->link = node;
3031 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump)
3042 if (prev->code == jit_code_epilog)
3044 assert(prev->code == jit_code_label);
3045 if ((prev->flag & jit_flag_head) || node->link || prev->link != node)
3046 /* multiple sources */
3048 /* if there are sequential labels it will return below */
3054 regno = jit_regno(node->v.w);
3055 for (iter = prev->next; iter; prev = iter, iter = iter->next) {
3056 switch (iter->code) {
3057 case jit_code_label: case jit_code_prolog:
3058 case jit_code_epilog:
3061 if (regno == jit_regno(iter->u.w)) {
3062 if (iter->flag || iter->v.w != word)
3065 del_node(prev, iter);
3070 spec = jit_classify(iter->code);
3071 if (spec & jit_cc_a0_jmp)
3073 if ((spec & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
3074 (jit_cc_a0_reg|jit_cc_a0_chg)) {
3075 if (spec & jit_cc_a0_rlh) {
3076 if (regno == jit_regno(iter->u.q.l) ||
3077 regno == jit_regno(iter->u.q.h))
3081 if (regno == jit_regno(iter->u.w))
3085 if ((spec & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
3086 (jit_cc_a1_reg|jit_cc_a1_chg)) {
3087 if (regno == jit_regno(iter->v.w))
3090 if ((spec & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
3091 (jit_cc_a2_reg|jit_cc_a2_chg)) {
3092 if (regno == jit_regno(iter->w.w))
3101 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
3102 jit_int32_t kind, jit_int32_t size)
3108 regno = jit_regno(node->u.w);
3109 right = jit_regno(node->v.w);
3110 value = _jitc->values + regno;
3111 if ((value->kind == jit_kind_register &&
3112 jit_regno(value->base.q.l) == right &&
3113 value->base.q.h == _jitc->gen[right]) ||
3114 (value->kind == kind && _jitc->values[right].kind == kind &&
3115 memcmp(&value->base.w, &_jitc->values[right].base.w, size) == 0)) {
3116 del_node(prev, node);
3119 if (_jitc->values[right].kind == jit_kind_word)
3120 jit_memcpy(value, _jitc->values + right, sizeof(jit_value_t));
3122 value->kind = jit_kind_register;
3123 value->base.q.l = right;
3124 value->base.q.h = _jitc->gen[right];
3126 ++_jitc->gen[regno];
3132 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
3133 jit_int32_t kind, jit_int32_t size)
3140 regno = jit_regno(node->u.w);
3141 value = _jitc->values + regno;
3142 if (node->flag & jit_flag_node) {
3143 /* set to undefined if value will be patched */
3145 ++_jitc->gen[regno];
3148 if (value->kind == kind) {
3149 if (memcmp(&node->v.w, &value->base.w, size) == 0) {
3150 del_node(prev, node);
3153 spec = jit_class(_rvs[regno].spec);
3154 if (kind == jit_kind_word)
3155 spec &= jit_class_gpr;
3157 spec &= (jit_class_xpr | jit_class_fpr);
3158 for (offset = 0; offset < _jitc->reglen; offset++) {
3159 if (_jitc->values[offset].kind == kind &&
3160 memcmp(&node->v.w, &_jitc->values[offset].base.w, size) == 0 &&
3161 (jit_class(_rvs[offset].spec) & spec) == spec) {
3162 if (kind == jit_kind_word)
3163 node->code = jit_code_movr;
3164 else if (kind == jit_kind_float32)
3165 node->code = jit_code_movr_f;
3167 node->code = jit_code_movr_d;
3169 jit_memcpy(value, _jitc->values + offset, sizeof(jit_value_t));
3170 ++_jitc->gen[regno];
3176 jit_memcpy(&value->base.w, &node->v.w, size);
3177 ++_jitc->gen[regno];
3182 /* simple/safe redundandy test not checking if another register
3183 * holds the same value
3186 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3192 regno = jit_regno(node->u.w);
3193 right = jit_regno(node->v.w);
3194 value = _jitc->values + regno;
3195 if (regno != right &&
3196 value->kind == jit_kind_code && value->code == node->code &&
3197 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3198 node->w.w == value->disp.w) {
3199 del_node(prev, node);
3202 value->kind = jit_kind_code;
3203 value->code = node->code;
3204 value->base.q.l = right;
3205 value->base.q.h = _jitc->gen[right];
3206 value->disp.w = node->w.w;
3207 ++_jitc->gen[regno];
3213 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3220 regno = jit_regno(node->w.w);
3221 right = jit_regno(node->v.w);
3222 value = _jitc->values + regno;
3224 /* check for redundant store after load */
3225 if (regno != right &&
3226 value->kind == jit_kind_code && value->code == node->code &&
3227 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3228 node->u.w == value->disp.w) {
3229 del_node(prev, node);
3233 /* assume anything can alias, and invalidate tracked values */
3234 for (offset = 0; offset < _jitc->reglen; offset++) {
3235 if (_jitc->values[offset].kind == jit_kind_code) {
3236 _jitc->values[offset].kind = 0;
3237 ++_jitc->gen[offset];
3241 /* no multiple information, so, if set to a constant,
3242 * prefer to keep that information */
3243 if (value->kind == 0) {
3244 value->kind = jit_kind_code;
3245 switch (node->code) {
3246 /* no information about signed/unsigned either */
3247 case jit_code_stxi_c: value->code = jit_code_ldxi_c; break;
3248 case jit_code_stxi_s: value->code = jit_code_ldxi_s; break;
3249 case jit_code_stxi_i: value->code = jit_code_ldxi_i; break;
3250 case jit_code_stxi_l: value->code = jit_code_ldxi_l; break;
3251 case jit_code_stxi_f: value->code = jit_code_ldxi_f; break;
3252 case jit_code_stxi_d: value->code = jit_code_ldxi_d; break;
3255 value->kind = jit_kind_code;
3256 value->base.q.l = right;
3257 value->base.q.h = _jitc->gen[right];
3258 value->disp.w = node->u.w;
3264 /* usually there should be only one store in the
3265 * jit_get_reg/jit_unget_reg, but properly handle
3266 * multiple ones by moving the save node */
3268 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3273 if ((temp = _jitc->spill[regno]) && (save = temp->next) != node) {
3274 temp->next = save->next;
3275 save->next = node->next;
3277 _jitc->spill[regno] = node;
3281 /* checks for simple cases where a register is set more than
3282 * once to the same value, and is a common pattern of calls
3283 * to jit_pushargi and jit_pushargr
3286 _simplify(jit_state_t *_jit)
3296 for (prev = NULL, node = _jitc->head; node; prev = node, node = next) {
3298 switch (node->code) {
3299 case jit_code_label: case jit_code_prolog:
3300 case jit_code_callr: case jit_code_calli:
3302 memset(_jitc->gen, 0, sizeof(jit_int32_t) * _jitc->reglen);
3303 memset(_jitc->values, 0, sizeof(jit_value_t) * _jitc->reglen);
3306 _jitc->spill[jit_regno(node->u.w)] = prev;
3309 regno = jit_regno(node->u.w);
3310 if (register_change_p(node->link->next, node, regno) !=
3312 /* spill not required due to optimizing common
3313 * redundancy case of calling jit_get_reg/jit_unget_reg
3314 * and then setting the register to the value it is
3315 * already holding */
3316 patch_register(node->link->next, node,
3317 jit_regno_patch|regno, regno);
3319 del_node(_jitc->spill[regno], node->link);
3320 del_node(prev, node);
3323 _jitc->spill[regno] = NULL;
3326 regno = jit_regno(node->u.w);
3327 if (simplify_movr(prev, node,
3328 jit_kind_word, sizeof(jit_word_t))) {
3330 simplify_spill(node = prev, regno);
3334 regno = jit_regno(node->u.w);
3335 if (simplify_movi(prev, node,
3336 jit_kind_word, sizeof(jit_word_t))) {
3338 simplify_spill(node = prev, regno);
3341 case jit_code_movr_f:
3342 regno = jit_regno(node->u.w);
3343 if (simplify_movr(prev, node,
3344 jit_kind_float32, sizeof(jit_float32_t))) {
3346 simplify_spill(node = prev, regno);
3349 case jit_code_movi_f:
3350 regno = jit_regno(node->u.w);
3351 if (simplify_movi(prev, node,
3352 jit_kind_float32, sizeof(jit_float32_t))) {
3354 simplify_spill(node = prev, regno);
3357 case jit_code_movr_d:
3358 regno = jit_regno(node->u.w);
3359 if (simplify_movr(prev, node,
3360 jit_kind_float64, sizeof(jit_float64_t))) {
3362 simplify_spill(node = prev, regno);
3365 case jit_code_movi_d:
3366 regno = jit_regno(node->u.w);
3367 if (simplify_movi(prev, node,
3368 jit_kind_float64, sizeof(jit_float64_t))) {
3370 simplify_spill(node = prev, regno);
3373 case jit_code_ldxi_c: case jit_code_ldxi_uc:
3374 case jit_code_ldxi_s: case jit_code_ldxi_us:
3375 case jit_code_ldxi_i: case jit_code_ldxi_ui:
3376 case jit_code_ldxi_l:
3377 case jit_code_ldxi_f: case jit_code_ldxi_d:
3378 regno = jit_regno(node->u.w);
3379 if (simplify_ldxi(prev, node)) {
3381 simplify_spill(node = prev, regno);
3384 case jit_code_stxi_c: case jit_code_stxi_s:
3385 case jit_code_stxi_i: case jit_code_stxi_l:
3386 case jit_code_stxi_f: case jit_code_stxi_d:
3387 regno = jit_regno(node->u.w);
3388 if (simplify_stxi(prev, node)) {
3390 simplify_spill(node = prev, regno);
3394 info = jit_classify(node->code);
3395 if (info & jit_cc_a0_jmp)
3396 /* labels are not implicitly added when not taking
3397 * a conditional branch */
3399 if (info & jit_cc_a0_chg) {
3400 if (info & jit_cc_a0_rlh) {
3401 regno = jit_regno(node->u.q.l);
3402 _jitc->values[regno].kind = 0;
3403 ++_jitc->gen[regno];
3404 regno = jit_regno(node->u.q.h);
3405 _jitc->values[regno].kind = 0;
3406 ++_jitc->gen[regno];
3409 regno = jit_regno(node->u.w);
3410 _jitc->values[regno].kind = 0;
3411 ++_jitc->gen[regno];
3414 if (info & jit_cc_a1_chg) {
3415 regno = jit_regno(node->v.w);
3416 _jitc->values[regno].kind = 0;
3417 ++_jitc->gen[regno];
3419 if (info & jit_cc_a2_chg) {
3421 /* Assume registers are not changed */
3422 if (info & jit_cc_a2_rlh) {
3423 regno = jit_regno(node->w.q.l);
3424 _jitc->values[regno].kind = 0;
3425 ++_jitc->gen[regno];
3426 regno = jit_regno(node->w.q.h);
3427 _jitc->values[regno].kind = 0;
3428 ++_jitc->gen[regno];
3432 regno = jit_regno(node->w.w);
3433 _jitc->values[regno].kind = 0;
3434 ++_jitc->gen[regno];
3446 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3451 for (; node != link; node = node->next) {
3452 switch (node->code) {
3453 case jit_code_label: case jit_code_prolog:
3454 /* lack of extra information so cannot say it is undefined */
3455 return (jit_reg_change);
3456 case jit_code_callr: case jit_code_calli:
3457 if (!(jit_class(_rvs[regno].spec) & jit_class_sav))
3458 return (jit_reg_undef);
3461 value = jit_classify(node->code);
3462 /* lack of extra information */
3463 if (value & (jit_cc_a0_jmp|jit_cc_a0_cnd))
3464 return (jit_reg_change);
3465 else if ((value & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
3466 (jit_cc_a0_reg|jit_cc_a0_chg) &&
3467 (((value & jit_cc_a0_rlh) &&
3468 (node->u.q.l == regno || node->u.q.h == regno)) ||
3469 (!(value & jit_cc_a0_rlh) &&
3470 node->u.w == regno)))
3471 return (jit_reg_change);
3472 else if ((value & jit_cc_a1_reg) && node->v.w == regno &&
3473 (value & jit_cc_a1_chg))
3474 return (jit_reg_change);
3475 else if ((value & jit_cc_a2_reg) && node->w.w == regno &&
3476 (value & jit_cc_a2_chg))
3477 return (jit_reg_change);
3481 return (jit_reg_static);
3484 /* most of this could be done at the same time as generating jit, but
3485 * avoid complications on different cpu backends and patch spill/loads
3486 * here, by simulating jit generation */
3488 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3490 if (!jit_regset_tstbit(&_jitc->reglive, regno)) {
3491 jit_regset_setbit(&_jitc->regmask, regno);
3492 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
3493 if (!jit_regset_tstbit(&_jitc->reglive, regno) &&
3494 register_change_p(node->next, node->link, regno) != jit_reg_change)
3502 _patch_registers(jit_state_t *_jit)
3512 _jitc->function = NULL;
3514 jit_reglive_setup();
3515 for (prev = NULL, node = _jitc->head; node; node = next) {
3518 info = jit_classify(node->code);
3519 jit_regarg_set(node, info);
3521 switch (node->code) {
3523 regno = jit_regno(node->u.w);
3524 if (!spill_reglive_p(node, regno)) {
3525 /* register is not live, just remove spill/reload */
3526 jit_regarg_clr(node, info);
3527 node->link->v.w = jit_regload_delete;
3528 del_node(prev, node);
3532 /* try to find a free register of the same class */
3533 spec = jit_class(_rvs[regno].spec) & ~jit_class_arg;
3534 for (value = 0; value < _jitc->reglen; value++) {
3535 if (value != regno &&
3536 ((jit_class(_rvs[value].spec) & spec) &
3537 ~jit_class_arg) == spec &&
3538 !jit_regset_tstbit(&_jitc->regarg, value) &&
3539 !spill_reglive_p(node, value))
3542 if (value < _jitc->reglen) {
3543 jit_regarg_clr(node, info);
3544 patch_register(node->next, node->link,
3545 jit_regno_patch|node->u.w,
3546 jit_regno_patch|value);
3547 /* mark as live just in case there are nested
3548 * register patches, so that next patch will
3549 * not want to use the same register */
3550 jit_regset_setbit(&_jitc->reglive, value);
3551 /* register is not live, just remove spill/reload */
3552 node->link->v.w = jit_regload_isdead;
3553 del_node(prev, node);
3557 /* failed to find a free register */
3558 if (spec & jit_class_gpr) {
3559 if (!_jitc->function->regoff[regno])
3560 _jitc->function->regoff[regno] =
3561 jit_allocai(sizeof(jit_word_t));
3562 #if __WORDSIZE == 32
3563 node->code = jit_code_stxi_i;
3565 node->code = jit_code_stxi_l;
3569 node->code = jit_code_stxi_d;
3570 if (!_jitc->function->regoff[regno])
3571 _jitc->function->regoff[regno] =
3572 jit_allocai(sizeof(jit_float64_t));
3574 node->u.w = _jitc->function->regoff[regno];
3582 regno = jit_regno(node->u.w);
3584 if (node->v.w == jit_regload_isdead)
3585 jit_regset_clrbit(&_jitc->reglive, regno);
3586 del_node(prev, node);
3589 spec = jit_class(_rvs[regno].spec);
3590 if (spec & jit_class_gpr) {
3591 #if __WORDSIZE == 32
3592 node->code = jit_code_ldxi_i;
3594 node->code = jit_code_ldxi_l;
3598 node->code = jit_code_ldxi_d;
3601 node->w.w = _jitc->function->regoff[regno];
3604 case jit_code_prolog:
3605 _jitc->function = _jitc->functions.ptr + node->w.w;
3607 case jit_code_epilog:
3608 _jitc->function = NULL;
3614 jit_regarg_clr(node, info);
3615 /* update register live state */
3622 _patch_register(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3623 jit_int32_t regno, jit_int32_t patch)
3627 for (; node != link; node = node->next) {
3628 value = jit_classify(node->code);
3629 if (value & jit_cc_a0_reg) {
3630 if (value & jit_cc_a0_rlh) {
3631 if (node->u.q.l == regno)
3632 node->u.q.l = patch;
3633 if (node->u.q.h == regno)
3634 node->u.q.h = patch;
3637 if (node->u.w == regno)
3641 if ((value & jit_cc_a1_reg) && node->v.w == regno)
3643 if (value & jit_cc_a2_reg) {
3644 if (value & jit_cc_a2_rlh) {
3645 if (node->w.q.l == regno)
3646 node->w.q.l = patch;
3647 if (node->w.q.h == regno)
3648 node->w.q.h = patch;
3651 if (node->w.w == regno)
3658 #if __BYTE_ORDER == __LITTLE_ENDIAN
3659 # define htonr_us(r0,r1) bswapr_us(r0,r1)
3660 # define htonr_ui(r0,r1) bswapr_ui(r0,r1)
3661 # if __WORDSIZE == 64
3662 # define htonr_ul(r0,r1) bswapr_ul(r0,r1)
3665 # define htonr_us(r0,r1) extr_us(r0,r1)
3666 # if __WORDSIZE == 32
3667 # define htonr_ui(r0,r1) movr(r0,r1)
3669 # define htonr_ui(r0,r1) extr_ui(r0,r1)
3670 # define htonr_ul(r0,r1) movr(r0,r1)
3674 static maybe_unused void
3675 generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3676 static maybe_unused void
3677 generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3678 #if __WORDSIZE == 64
3679 static maybe_unused void
3680 generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1);
3683 #if defined(__i386__) || defined(__x86_64__)
3684 # include "jit_x86.c"
3685 #elif defined(__mips__)
3686 # include "jit_mips.c"
3687 #elif defined(__arm__)
3688 # include "jit_arm.c"
3689 #elif defined(__powerpc__)
3690 # include "jit_ppc.c"
3691 #elif defined(__sparc__)
3692 # include "jit_sparc.c"
3693 #elif defined(__ia64__)
3694 # include "jit_ia64.c"
3695 #elif defined(__hppa__)
3696 # include "jit_hppa.c"
3697 #elif defined(__aarch64__)
3698 # include "jit_aarch64.c"
3699 #elif defined(__s390__) || defined(__s390x__)
3700 # include "jit_s390.c"
3701 #elif defined(__alpha__)
3702 # include "jit_alpha.c"
3703 #elif defined(__riscv)
3704 # include "jit_riscv.c"
3707 static maybe_unused void
3708 generic_bswapr_us(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3710 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3712 rshi(rn(reg), r1, 8);
3714 andi(rn(reg), rn(reg), 0xff);
3716 orr(r0, r0, rn(reg));
3721 static maybe_unused void
3722 generic_bswapr_ui(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3724 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3726 rshi(rn(reg), r1, 16);
3728 bswapr_us(rn(reg), rn(reg));
3730 orr(r0, r0, rn(reg));
3735 #if __WORDSIZE == 64
3736 static maybe_unused void
3737 generic_bswapr_ul(jit_state_t *_jit, jit_int32_t r0, jit_int32_t r1)
3739 jit_int32_t reg = jit_get_reg(jit_class_gpr);
3741 rshi_u(rn(reg), r1, 32);
3743 bswapr_ui(rn(reg), rn(reg));
3745 orr(r0, r0, rn(reg));