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>
25 # include <sys/mman.h>
32 # define MAP_ANON MAP_ANONYMOUS
33 # ifndef MAP_ANONYMOUS
34 # define MAP_ANONYMOUS 0
38 #define jit_regload_reload 0 /* convert to reload */
39 #define jit_regload_delete 1 /* just remove node */
40 #define jit_regload_isdead 2 /* delete and unset live bit */
45 static jit_word_t hash_data(const void*, jit_word_t);
47 #define new_pool() _new_pool(_jit)
48 static void _new_pool(jit_state_t*);
50 #define new_node(u) _new_node(_jit, u)
51 static jit_node_t *_new_node(jit_state_t*, jit_code_t);
53 #define link_node(u) _link_node(_jit, u)
54 static inline jit_node_t *_link_node(jit_state_t*, jit_node_t*);
56 #define del_node(u, v) _del_node(_jit, u, v)
57 static inline void _del_node(jit_state_t*, jit_node_t*, jit_node_t*);
59 #define free_node(u) _free_node(_jit, u)
60 static inline void _free_node(jit_state_t*, jit_node_t*);
62 #define del_label(u, v) _del_label(_jit, u, v)
63 static void _del_label(jit_state_t*, jit_node_t*, jit_node_t*);
65 #define jit_dataset() _jit_dataset(_jit)
67 _jit_dataset(jit_state_t *_jit);
69 #define jit_setup(block) _jit_setup(_jit, block)
71 _jit_setup(jit_state_t *_jit, jit_block_t *block);
73 #define jit_follow(block, todo) _jit_follow(_jit, block, todo)
75 _jit_follow(jit_state_t *_jit, jit_block_t *block, jit_bool_t *todo);
77 #define jit_update(node, live, mask) _jit_update(_jit, node, live, mask)
79 _jit_update(jit_state_t *_jit, jit_node_t *node,
80 jit_regset_t *live, jit_regset_t *mask);
82 #define thread_jumps() _thread_jumps(_jit)
84 _thread_jumps(jit_state_t *_jit);
86 #define sequential_labels() _sequential_labels(_jit)
88 _sequential_labels(jit_state_t *_jit);
90 #define split_branches() _split_branches(_jit)
92 _split_branches(jit_state_t *_jit);
94 #define shortcut_jump(prev, node) _shortcut_jump(_jit, prev, node)
96 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
98 #define redundant_jump(prev, node) _redundant_jump(_jit, prev, node)
100 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
103 reverse_jump_code(jit_code_t code);
105 #define reverse_jump(prev, node) _reverse_jump(_jit, prev, node)
107 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
109 #define redundant_store(node, jump) _redundant_store(_jit, node, jump)
111 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump);
113 #define simplify_movr(p, n, k, s) _simplify_movr(_jit, p, n, k, s)
115 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
116 jit_int32_t kind, jit_int32_t size);
118 #define simplify_movi(p, n, k, s) _simplify_movi(_jit, p, n, k, s)
120 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
121 jit_int32_t kind, jit_int32_t size);
123 #define simplify_ldxi(prev, node) _simplify_ldxi(_jit, prev, node)
125 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
127 #define simplify_stxi(prev, node) _simplify_stxi(_jit, prev, node)
129 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node);
131 #define simplify_spill(node, regno) _simplify_spill(_jit, node, regno)
133 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
135 #define simplify() _simplify(_jit)
137 _simplify(jit_state_t *_jit);
139 #define jit_reg_undef -1
140 #define jit_reg_static 0
141 #define jit_reg_change 1
142 #define register_change_p(n, l, r) _register_change_p(_jit, n, l, r)
144 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
147 #define spill_reglive_p(node, regno) _spill_reglive_p(_jit, node, regno)
149 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno);
151 #define patch_registers() _patch_registers(_jit)
153 _patch_registers(jit_state_t *_jit);
155 #define patch_register(n,l,r,p) _patch_register(_jit,n,l,r,p)
157 _patch_register(jit_state_t *jit, jit_node_t *node, jit_node_t *link,
158 jit_int32_t regno, jit_int32_t patch);
171 init_jit(const char *progname)
174 jit_init_debug(progname);
186 _jit_get_reg(jit_state_t *_jit, jit_int32_t regspec)
191 spec = regspec & ~(jit_class_chk|jit_class_nospill);
192 if (spec & jit_class_named) {
193 regno = jit_regno(spec);
194 if (jit_regset_tstbit(&_jitc->regsav, regno))
195 /* fail if register is spilled */
197 if (jit_regset_tstbit(&_jitc->regarg, regno))
198 /* fail if register is an argument to current instruction */
200 if (jit_regset_tstbit(&_jitc->reglive, regno)) {
201 if (regspec & jit_class_nospill)
202 /* fail if register is live and should not spill/reload */
206 jit_regset_setbit(&_jitc->regarg, regno);
210 assert(jit_class(spec) != 0);
213 /* search for a free register matching spec */
214 for (regno = 0; regno < _jitc->reglen; regno++) {
215 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
216 !jit_regset_tstbit(&_jitc->regarg, regno) &&
217 !jit_regset_tstbit(&_jitc->reglive, regno))
221 /* search for a register matching spec that is not an argument
222 * for the current instruction */
223 for (regno = 0; regno < _jitc->reglen; regno++) {
224 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
225 !jit_regset_tstbit(&_jitc->regsav, regno) &&
226 !jit_regset_tstbit(&_jitc->regarg, regno) &&
227 !(regspec & jit_class_nospill)) {
229 assert(_jitc->function != NULL);
230 if (spec & jit_class_gpr) {
231 if (!_jitc->function->regoff[regno]) {
232 _jitc->function->regoff[regno] =
233 jit_allocai(sizeof(jit_word_t));
237 /* emit_stxi must not need temporary registers */
238 assert(!_jitc->getreg);
241 emit_stxi(_jitc->function->regoff[regno], JIT_FP, regno);
247 if (!_jitc->function->regoff[regno]) {
248 _jitc->function->regoff[regno] =
249 jit_allocai(sizeof(jit_float64_t));
253 /* emit_stxi must not need temporary registers */
254 assert(!_jitc->getreg);
257 emit_stxi_d(_jitc->function->regoff[regno], JIT_FP, regno);
262 jit_regset_setbit(&_jitc->regsav, regno);
264 jit_regset_setbit(&_jitc->regarg, regno);
265 if (jit_class(_rvs[regno].spec) & jit_class_sav) {
266 /* if will modify callee save registers without a
267 * function prolog, better patch this assertion */
268 assert(_jitc->function != NULL);
269 if (!jit_regset_tstbit(&_jitc->function->regset, regno)) {
270 jit_regset_setbit(&_jitc->function->regset, regno);
279 /* nospill hint only valid during emit" */
280 assert(!(regspec & jit_class_nospill));
281 for (regno = 0; regno < _jitc->reglen; regno++) {
282 if ((jit_class(_rvs[regno].spec) & spec) == spec &&
283 !jit_regset_tstbit(&_jitc->regsav, regno) &&
284 !jit_regset_tstbit(&_jitc->regarg, regno)) {
285 jit_regset_setbit(&_jitc->regarg, regno);
286 jit_regset_setbit(&_jitc->regsav, regno);
288 return (jit_regno_patch|regno);
293 /* Out of hardware registers */
295 assert(regspec & jit_class_chk);
300 _jit_unget_reg(jit_state_t *_jit, jit_int32_t regno)
302 regno = jit_regno(regno);
303 if (jit_regset_tstbit(&_jitc->regsav, regno)) {
306 /* emit_ldxi must not need a temporary register */
307 assert(!_jitc->getreg);
310 if (jit_class(_rvs[regno].spec) & jit_class_gpr)
311 emit_ldxi(regno, JIT_FP, _jitc->function->regoff[regno]);
313 emit_ldxi_d(regno, JIT_FP, _jitc->function->regoff[regno]);
315 /* emit_ldxi must not need a temporary register */
321 jit_regset_clrbit(&_jitc->regsav, regno);
323 #if defined(jit_carry)
324 assert((regno == jit_carry /*&& _NOREG != jit_carry*/) ||
325 jit_regset_tstbit(&_jitc->regarg, regno) != 0);
327 assert(jit_regset_tstbit(&_jitc->regarg, regno) != 0);
329 jit_regset_clrbit(&_jitc->regarg, regno);
333 _jit_callee_save_p(jit_state_t *_jit, jit_int32_t regno)
335 assert(regno >= 0 && regno < JIT_NOREG);
336 return (!!(_rvs[regno].spec & jit_class_sav));
340 _jit_pointer_p(jit_state_t *_jit, jit_pointer_t address)
342 return ((jit_uint8_t *)address >= _jit->code.ptr &&
343 (jit_word_t)address < _jit->pc.w);
348 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
350 u->rl = ~v->rl; u->rh = ~v->rh;
351 u->fl = ~v->fl; u->fh = ~v->fh;
355 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
357 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
358 u->fl = v->fl & w->fl; u->fh = v->fh & w->fh;
362 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
364 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
365 u->fl = v->fl | w->fl; u->fh = v->fh | w->fh;
369 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
371 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
372 u->fl = v->fl ^ w->fl; u->fh = v->fh ^ w->fh;
376 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
378 u->rl = v->rl; u->rh = v->rh;
379 u->fl = v->fl; u->fh = v->fh;
383 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
385 jit_bool_t w = !!(v & (v - 1));
387 assert(v >= 0 && v <= 256);
389 u->rl = u->rh = u->fl = u->fh = -1LL;
391 u->rl = w ? (1LL << v) - 1 : -1LL;
392 u->rh = u->fl = u->fh = 0;
396 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
400 u->rl = u->rh = -1LL;
401 u->fl = w ? (1LL << (v - 128)) - 1 : -1LL;
405 u->rl = u->rh = u->fl = -1LL;
406 u->fh = w ? (1LL << (v - 128)) - 1 : -1LL;
411 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
413 return !((u->rl == v && u->rh == 0 && u->fl == 0 && u->fh == 0));
417 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
420 u->rh = u->fl = u->fh = 0;
424 jit_regset_set_p(jit_regset_t *u)
426 return (u->rl || u->rh || u->fl || u->fh);
430 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
432 assert(bit >= 0 && bit <= 255);
434 set->rl &= ~(1LL << bit);
436 set->rh &= ~(1LL << (bit - 64));
438 set->fl &= ~(1LL << (bit - 128));
440 set->fh &= ~(1LL << (bit - 192));
444 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
446 assert(bit >= 0 && bit <= 255);
448 set->rl |= 1LL << bit;
450 set->rh |= 1LL << (bit - 64);
452 set->fl |= 1LL << (bit - 128);
454 set->fh |= 1LL << (bit - 192);
458 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
460 assert(bit >= 0 && bit <= 255);
462 return (!!(set->rl & (1LL << bit)));
464 return (!!(set->rh & (1LL << (bit - 64))));
466 return (!!(set->fl & (1LL << (bit - 128))));
467 return (!!(set->fh & (1LL << (bit - 192))));
471 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
473 assert(offset >= 0 && offset <= 255);
474 for (; offset < 64; offset++) {
475 if (set->rl & (1LL << offset))
478 for (; offset < 128; offset++) {
479 if (set->rh & (1LL << (offset - 64)))
482 for (; offset < 192; offset++) {
483 if (set->fl & (1LL << (offset - 128)))
486 for (; offset < 256; offset++) {
487 if (set->fh & (1LL << (offset - 192)))
493 #elif __sparc__ && __WORDSIZE == 64
495 jit_regset_com(jit_regset_t *u, jit_regset_t *v)
497 u->rl = ~v->rl; u->rh = ~v->rh;
501 jit_regset_and(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
503 u->rl = v->rl & w->rl; u->rh = v->rh & w->rh;
507 jit_regset_ior(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
509 u->rl = v->rl | w->rl; u->rh = v->rh | w->rh;
513 jit_regset_xor(jit_regset_t *u, jit_regset_t *v, jit_regset_t *w)
515 u->rl = v->rl ^ w->rl; u->rh = v->rh ^ w->rh;
519 jit_regset_set(jit_regset_t *u, jit_regset_t *v)
521 u->rl = v->rl; u->rh = v->rh;
525 jit_regset_set_mask(jit_regset_t *u, jit_int32_t v)
527 jit_bool_t w = !!(v & (v - 1));
529 assert(v >= 0 && v <= 128);
531 u->rl = u->rh = -1LL;
533 u->rl = w ? (1LL << v) - 1 : -1LL;
538 u->rh = w ? (1LL << (v - 64)) - 1 : -1LL;
543 jit_regset_cmp_ui(jit_regset_t *u, jit_word_t v)
545 return !((u->rl == v && u->rh == 0));
549 jit_regset_set_ui(jit_regset_t *u, jit_word_t v)
556 jit_regset_set_p(jit_regset_t *u)
558 return (u->rl || u->rh);
562 jit_regset_clrbit(jit_regset_t *set, jit_int32_t bit)
564 assert(bit >= 0 && bit <= 128);
566 set->rl &= ~(1LL << bit);
568 set->rh &= ~(1LL << (bit - 64));
572 jit_regset_setbit(jit_regset_t *set, jit_int32_t bit)
574 assert(bit >= 0 && bit <= 127);
576 set->rl |= 1LL << bit;
578 set->rh |= 1LL << (bit - 64);
582 jit_regset_tstbit(jit_regset_t *set, jit_int32_t bit)
584 assert(bit >= 0 && bit <= 127);
586 return (!!(set->rl & (1LL << bit)));
588 return (!!(set->rh & (1LL << (bit - 64))));
592 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
594 assert(offset >= 0 && offset <= 127);
595 for (; offset < 64; offset++) {
596 if (set->rl & (1LL << offset))
599 for (; offset < 128; offset++) {
600 if (set->rh & (1LL << (offset - 64)))
608 jit_regset_scan1(jit_regset_t *set, jit_int32_t offset)
611 assert(offset >= 0 && offset <= 63);
612 if ((mask = *set >> offset)) {
625 _jit_save(jit_state_t *_jit, jit_int32_t reg)
627 reg = jit_regno(reg);
628 assert(!_jitc->realize);
629 _jitc->spill[reg] = jit_new_node_w(jit_code_save, reg);
633 _jit_load(jit_state_t *_jit, jit_int32_t reg)
637 reg = jit_regno(reg);
638 assert(!_jitc->realize);
639 assert(_jitc->spill[reg] != NULL);
640 node = jit_new_node_w(jit_code_load, reg);
641 /* create a path to flag the save/load is not required */
642 node->link = _jitc->spill[reg];
643 node->link->link = node;
644 _jitc->spill[reg] = NULL;
648 hash_data(const void *data, jit_word_t length)
650 const jit_uint8_t *ptr;
652 for (i = key = 0, ptr = data; i < length; i++)
653 key = (key << (key & 1)) ^ ptr[i];
658 _jit_address(jit_state_t *_jit, jit_node_t *node)
661 assert(node != NULL &&
662 /* If a node type that is documented to be a fixed marker */
663 (node->code == jit_code_note || node->code == jit_code_name ||
664 /* If another special fixed marker, returned by jit_indirect() */
665 (node->code == jit_code_label && (node->flag & jit_flag_use) != 0)));
666 return ((jit_pointer_t)node->u.w);
670 _jit_data(jit_state_t *_jit, const void *data,
671 jit_word_t length, jit_int32_t align)
676 assert(!_jitc->realize);
678 /* Ensure there is space even if asking for a duplicate */
679 if (((_jitc->data.offset + 7) & -8) + length > _jit->data.length) {
682 size = (_jit->data.length + length + 4096) & - 4095;
683 assert(size >= _jit->data.length);
684 if (_jitc->data.ptr == NULL)
685 jit_alloc((jit_pointer_t *)&_jitc->data.ptr, size);
687 jit_realloc((jit_pointer_t *)&_jitc->data.ptr,
688 _jit->data.length, size);
689 _jit->data.length = size;
691 if (_jitc->data.table == NULL)
692 jit_alloc((jit_pointer_t *)&_jitc->data.table,
693 (_jitc->data.size = 16) * sizeof(jit_node_t*));
695 key = hash_data(data, length) & (_jitc->data.size - 1);
696 node = _jitc->data.table[key];
697 for (; node; node = node->next) {
698 if (node->v.w == length &&
699 memcmp(_jitc->data.ptr + node->u.w, data, length) == 0)
704 node = jit_new_node_no_link(jit_code_data);
711 _jitc->data.offset = (_jitc->data.offset + 1) & -2;
714 _jitc->data.offset = (_jitc->data.offset + 3) & -4;
717 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
720 node->u.w = _jitc->data.offset;
722 jit_memcpy(_jitc->data.ptr + _jitc->data.offset, data, length);
723 _jitc->data.offset += length;
725 node->next = _jitc->data.table[key];
726 _jitc->data.table[key] = node;
729 /* Rehash if more than 75% used table */
730 if (_jitc->data.count >
731 (_jitc->data.size >> 1) + (_jitc->data.size >> 2) &&
732 (_jitc->data.size << 1) > _jitc->data.size) {
738 jit_alloc((jit_pointer_t *)&hash,
739 (_jitc->data.size << 1) * sizeof(jit_node_t*));
740 for (i = 0; i < _jitc->data.size; i++) {
741 temp = _jitc->data.table[i];
742 for (; temp; temp = next) {
744 key = hash_data(_jitc->data.ptr + temp->u.w, temp->v.w) &
745 ((_jitc->data.size << 1) - 1);
746 temp->next = hash[key];
750 jit_free((jit_pointer_t *)&_jitc->data.table);
751 _jitc->data.table = hash;
752 _jitc->data.size <<= 1;
760 _new_pool(jit_state_t *_jit)
765 if (_jitc->pool.offset >= _jitc->pool.length) {
768 length = _jitc->pool.length + 16;
769 jit_realloc((jit_pointer_t *)&_jitc->pool.ptr,
770 _jitc->pool.length * sizeof(jit_node_t *),
771 length * sizeof(jit_node_t *));
772 _jitc->pool.length = length;
774 jit_alloc((jit_pointer_t *)(_jitc->pool.ptr + _jitc->pool.offset),
775 sizeof(jit_node_t) * 1024);
776 list = _jitc->pool.ptr[_jitc->pool.offset];
777 for (offset = 1; offset < 1024; offset++, list++)
778 list->next = list + 1;
779 list->next = _jitc->list;
780 _jitc->list = _jitc->pool.ptr[_jitc->pool.offset];
781 ++_jitc->pool.offset;
785 _new_node(jit_state_t *_jit, jit_code_t code)
789 if (_jitc->list == NULL)
792 _jitc->list = node->next;
794 node->flag |= jit_flag_synth;
801 static inline jit_node_t *
802 _link_node(jit_state_t *_jit, jit_node_t *node)
805 _jitc->tail->next = node;
808 return (_jitc->tail = node);
812 _del_node(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
815 assert(prev == _jitc->head);
816 _jitc->head = node->next;
819 prev->next = node->next;
820 memset(node, 0, sizeof(jit_node_t));
821 node->next = _jitc->list;
826 _free_node(jit_state_t *_jit, jit_node_t *node)
828 memset(node, 0, sizeof(jit_node_t));
829 node->next = _jitc->list;
834 _del_label(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
838 /* only allow call to del_label on linked labels */
839 block = _jitc->blocks.ptr + node->v.w;
840 assert(block->label == node);
842 /* del_label() should only be called when optimizing.
843 * This will leave an empty block index */
844 jit_regset_del(&block->reglive);
845 jit_regset_del(&block->regmask);
848 /* redundant, should be already true */
849 assert(node->link == NULL);
850 del_node(prev, node);
858 jit_alloc((jit_pointer_t *)&_jit, sizeof(jit_state_t));
859 jit_alloc((jit_pointer_t *)&_jitc, sizeof(jit_compiler_t));
860 jit_regset_new(&_jitc->regarg);
861 jit_regset_new(&_jitc->regsav);
862 jit_regset_new(&_jitc->reglive);
863 jit_regset_new(&_jitc->regmask);
867 jit_alloc((jit_pointer_t *)&_jitc->spill,
868 _jitc->reglen * sizeof(jit_node_t*));
869 jit_alloc((jit_pointer_t *)&_jitc->gen,
870 _jitc->reglen * sizeof(jit_int32_t));
871 jit_alloc((jit_pointer_t *)&_jitc->values,
872 _jitc->reglen * sizeof(jit_value_t));
874 jit_alloc((jit_pointer_t *)&_jitc->patches.ptr,
875 (_jitc->patches.length = 1024) * sizeof(jit_patch_t));
876 jit_alloc((jit_pointer_t *)&_jitc->functions.ptr,
877 (_jitc->functions.length = 16) * sizeof(jit_function_t));
878 jit_alloc((jit_pointer_t *)&_jitc->pool.ptr,
879 (_jitc->pool.length = 16) * sizeof(jit_node_t*));
880 jit_alloc((jit_pointer_t *)&_jitc->blocks.ptr,
881 (_jitc->blocks.length = 16) * sizeof(jit_block_t));
882 #if __arm__ && DISASSEMBLER
883 jit_alloc((jit_pointer_t *)&_jitc->data_info.ptr,
884 (_jitc->data_info.length = 1024) * sizeof(jit_data_info_t));
887 /* allocate at most one extra note in case jit_name() is
888 * never called, or called after adding at least one note */
889 _jit->note.length = 1;
890 _jitc->note.size = sizeof(jit_note_t);
896 _jit_clear_state(jit_state_t *_jit)
898 #if DEVEL_DISASSEMBLER
899 # define jit_really_clear_state() _jit_really_clear_state(_jit)
902 void _jit_really_clear_state(jit_state_t *_jit)
906 jit_function_t *function;
908 /* release memory not required at jit execution time and set
909 * pointers to NULL to explicitly know they are released */
910 _jitc->head = _jitc->tail = NULL;
912 jit_free((jit_pointer_t *)&_jitc->data.table);
913 _jitc->data.size = _jitc->data.count = 0;
915 jit_free((jit_pointer_t *)&_jitc->spill);
916 jit_free((jit_pointer_t *)&_jitc->gen);
917 jit_free((jit_pointer_t *)&_jitc->values);
919 jit_free((jit_pointer_t *)&_jitc->blocks.ptr);
921 jit_free((jit_pointer_t *)&_jitc->patches.ptr);
922 _jitc->patches.offset = _jitc->patches.length = 0;
924 for (offset = 0; offset < _jitc->functions.offset; offset++) {
925 function = _jitc->functions.ptr + offset;
926 jit_free((jit_pointer_t *)&function->regoff);
928 jit_free((jit_pointer_t *)&_jitc->functions.ptr);
929 _jitc->functions.offset = _jitc->functions.length = 0;
930 _jitc->function = NULL;
932 for (offset = 0; offset < _jitc->pool.offset; offset++)
933 jit_free((jit_pointer_t *)(_jitc->pool.ptr + offset));
934 jit_free((jit_pointer_t *)&_jitc->pool.ptr);
935 _jitc->pool.offset = _jitc->pool.length = 0;
938 _jitc->note.head = _jitc->note.tail =
939 _jitc->note.name = _jitc->note.note = NULL;
940 _jitc->note.base = NULL;
942 #if __arm__ && DISASSEMBLER
943 jit_free((jit_pointer_t *)&_jitc->data_info.ptr);
946 #if (__powerpc__ && _CALL_AIXDESC) || __ia64__
947 jit_free((jit_pointer_t *)&_jitc->prolog.ptr);
951 jit_regset_del(&_jitc->regs);
954 jit_free((jit_pointer_t *)&_jitc);
958 _jit_destroy_state(jit_state_t *_jit)
960 #if DEVEL_DISASSEMBLER
961 jit_really_clear_state();
963 if (!_jit->user_code)
964 munmap(_jit->code.ptr, _jit->code.length);
965 if (!_jit->user_data)
966 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_wwf(jit_state_t *_jit, jit_code_t code,
1143 jit_word_t u, jit_word_t v, jit_float32_t w)
1145 jit_node_t *node = new_node(code);
1146 assert(!_jitc->realize);
1150 return (link_node(node));
1154 _jit_new_node_wwd(jit_state_t *_jit, jit_code_t code,
1155 jit_word_t u, jit_word_t v, jit_float64_t w)
1157 jit_node_t *node = new_node(code);
1158 assert(!_jitc->realize);
1162 return (link_node(node));
1166 _jit_new_node_pww(jit_state_t *_jit, jit_code_t code,
1167 jit_pointer_t u, jit_word_t v, jit_word_t w)
1169 jit_node_t *node = new_node(code);
1170 assert(!_jitc->realize);
1174 return (link_node(node));
1178 _jit_new_node_pwf(jit_state_t *_jit, jit_code_t code,
1179 jit_pointer_t u, jit_word_t v, jit_float32_t w)
1181 jit_node_t *node = new_node(code);
1182 assert(!_jitc->realize);
1186 return (link_node(node));
1190 _jit_new_node_pwd(jit_state_t *_jit, jit_code_t code,
1191 jit_pointer_t u, jit_word_t v, jit_float64_t w)
1193 jit_node_t *node = new_node(code);
1194 assert(!_jitc->realize);
1198 return (link_node(node));
1202 _jit_label(jit_state_t *_jit)
1206 if (!(node = _jitc->tail) || node->code != jit_code_label) {
1207 node = jit_forward();
1215 _jit_forward(jit_state_t *_jit)
1217 return (jit_new_node_no_link(jit_code_label));
1221 _jit_indirect(jit_state_t *_jit)
1226 node->flag |= jit_flag_use;
1232 _jit_link(jit_state_t *_jit, jit_node_t *node)
1236 assert((node->code == jit_code_label ||
1237 node->code == jit_code_prolog ||
1238 node->code == jit_code_epilog) && !node->next);
1239 jit_link_node(node);
1240 if (_jitc->blocks.offset >= _jitc->blocks.length) {
1243 length = _jitc->blocks.length + 16;
1244 jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr,
1245 _jitc->blocks.length * sizeof(jit_block_t),
1246 length * sizeof(jit_block_t));
1247 _jitc->blocks.length = length;
1249 block = _jitc->blocks.ptr + _jitc->blocks.offset;
1250 block->label = node;
1251 node->v.w = _jitc->blocks.offset;
1252 jit_regset_new(&block->reglive);
1253 jit_regset_new(&block->regmask);
1254 ++_jitc->blocks.offset;
1258 _jit_forward_p(jit_state_t *_jit, jit_node_t *node)
1260 return (node->code == jit_code_label && !node->next && node != _jitc->tail);
1264 _jit_indirect_p(jit_state_t *_jit, jit_node_t *node)
1266 return (node->code == jit_code_label && !!(node->flag & jit_flag_use));
1270 _jit_target_p(jit_state_t *_jit, jit_node_t *node)
1272 return (node->code == jit_code_label && !!node->link);
1276 _jit_prepare(jit_state_t *_jit)
1278 assert(_jitc->function != NULL);
1279 _jitc->function->call.call = jit_call_default;
1280 _jitc->function->call.argi =
1281 _jitc->function->call.argf =
1282 _jitc->function->call.size = 0;
1283 _jitc->prepare = jit_new_node(jit_code_prepare);
1287 _jit_patch(jit_state_t* _jit, jit_node_t *instr)
1291 if (!(label = _jitc->tail) || label->code != jit_code_label)
1292 label = jit_label();
1293 jit_patch_at(instr, label);
1297 _jit_classify(jit_state_t *_jit, jit_code_t code)
1302 case jit_code_data: case jit_code_save: case jit_code_load:
1303 case jit_code_name: case jit_code_label: case jit_code_note:
1304 case jit_code_prolog: case jit_code_ellipsis: case jit_code_va_push:
1305 case jit_code_epilog: case jit_code_ret: case jit_code_prepare:
1308 case jit_code_live: case jit_code_va_end:
1309 case jit_code_retr: case jit_code_retr_f: case jit_code_retr_d:
1310 case jit_code_pushargr: case jit_code_pushargr_f:
1311 case jit_code_pushargr_d:
1312 case jit_code_finishr: /* synthesized will set jit_cc_a0_jmp */
1313 mask = jit_cc_a0_reg;
1315 case jit_code_align: case jit_code_reti: case jit_code_pushargi:
1316 case jit_code_finishi: /* synthesized will set jit_cc_a0_jmp */
1317 mask = jit_cc_a0_int;
1319 case jit_code_reti_f: case jit_code_pushargi_f:
1320 mask = jit_cc_a0_flt;
1322 case jit_code_reti_d: case jit_code_pushargi_d:
1323 mask = jit_cc_a0_dbl;
1325 case jit_code_allocai:
1326 mask = jit_cc_a0_int|jit_cc_a1_int;
1328 case jit_code_arg: case jit_code_arg_f: case jit_code_arg_d:
1329 mask = jit_cc_a0_int|jit_cc_a0_arg;
1331 case jit_code_calli: case jit_code_jmpi:
1332 mask = jit_cc_a0_jmp;
1334 case jit_code_callr: case jit_code_jmpr:
1335 mask = jit_cc_a0_reg|jit_cc_a0_jmp;
1337 case jit_code_retval_c: case jit_code_retval_uc:
1338 case jit_code_retval_s: case jit_code_retval_us:
1339 case jit_code_retval_i: case jit_code_retval_ui:
1340 case jit_code_retval_l:
1341 case jit_code_retval_f: case jit_code_retval_d:
1342 case jit_code_va_start:
1343 mask = jit_cc_a0_reg|jit_cc_a0_chg;
1345 case jit_code_getarg_c: case jit_code_getarg_uc:
1346 case jit_code_getarg_s: case jit_code_getarg_us:
1347 case jit_code_getarg_i: case jit_code_getarg_ui:
1348 case jit_code_getarg_l:
1349 case jit_code_getarg_f: case jit_code_getarg_d:
1350 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_arg;
1352 case jit_code_putargr: case jit_code_putargr_f:
1353 case jit_code_putargr_d:
1354 mask = jit_cc_a0_reg|jit_cc_a1_arg;
1356 case jit_code_putargi:
1357 mask = jit_cc_a0_int|jit_cc_a1_arg;
1359 case jit_code_putargi_f:
1360 mask = jit_cc_a0_flt|jit_cc_a1_arg;
1362 case jit_code_putargi_d:
1363 mask = jit_cc_a0_dbl|jit_cc_a1_arg;
1365 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1366 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1367 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1368 case jit_code_ldi_d:
1369 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_int;
1371 case jit_code_movi_f: case jit_code_movi_f_w:
1372 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_flt;
1374 case jit_code_movi_d: case jit_code_movi_d_w:
1375 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_dbl;
1377 case jit_code_movi_d_ww:
1378 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1381 case jit_code_negr: case jit_code_comr: case jit_code_movr:
1382 case jit_code_extr_c: case jit_code_extr_uc: case jit_code_extr_s:
1383 case jit_code_extr_us: case jit_code_extr_i: case jit_code_extr_ui:
1384 case jit_code_truncr_f_i: case jit_code_truncr_f_l:
1385 case jit_code_truncr_d_i: case jit_code_truncr_d_l:
1386 case jit_code_htonr_us: case jit_code_htonr_ui: case jit_code_htonr_ul:
1387 case jit_code_ldr_c: case jit_code_ldr_uc:
1388 case jit_code_ldr_s: case jit_code_ldr_us: case jit_code_ldr_i:
1389 case jit_code_ldr_ui: case jit_code_ldr_l: case jit_code_negr_f:
1390 case jit_code_absr_f: case jit_code_sqrtr_f: case jit_code_movr_f:
1391 case jit_code_extr_f: case jit_code_extr_d_f: case jit_code_ldr_f:
1392 case jit_code_negr_d: case jit_code_absr_d: case jit_code_sqrtr_d:
1393 case jit_code_movr_d: case jit_code_extr_d: case jit_code_extr_f_d:
1394 case jit_code_ldr_d:
1395 case jit_code_movr_w_f: case jit_code_movr_f_w:
1396 case jit_code_movr_w_d: case jit_code_movr_d_w:
1397 case jit_code_va_arg: case jit_code_va_arg_d:
1398 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg;
1400 case jit_code_movr_d_ww:
1401 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a1_chg|
1404 case jit_code_addi: case jit_code_addxi: case jit_code_addci:
1405 case jit_code_subi: case jit_code_subxi: case jit_code_subci:
1407 case jit_code_muli: case jit_code_divi: case jit_code_divi_u:
1408 case jit_code_remi: case jit_code_remi_u: case jit_code_andi:
1409 case jit_code_ori: case jit_code_xori: case jit_code_lshi:
1410 case jit_code_rshi: case jit_code_rshi_u: case jit_code_lti:
1411 case jit_code_lti_u: case jit_code_lei: case jit_code_lei_u:
1412 case jit_code_eqi: case jit_code_gei: case jit_code_gei_u:
1413 case jit_code_gti: case jit_code_gti_u: case jit_code_nei:
1414 case jit_code_ldxi_c: case jit_code_ldxi_uc: case jit_code_ldxi_s:
1415 case jit_code_ldxi_us: case jit_code_ldxi_i: case jit_code_ldxi_ui:
1416 case jit_code_ldxi_l: case jit_code_ldxi_f: case jit_code_ldxi_d:
1417 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_int;
1419 case jit_code_qmuli: case jit_code_qmuli_u:
1420 case jit_code_qdivi: case jit_code_qdivi_u:
1421 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1422 jit_cc_a1_reg|jit_cc_a2_int;
1424 case jit_code_addi_f: case jit_code_subi_f: case jit_code_rsbi_f:
1425 case jit_code_muli_f: case jit_code_divi_f: case jit_code_lti_f:
1426 case jit_code_lei_f: case jit_code_eqi_f: case jit_code_gei_f:
1427 case jit_code_gti_f: case jit_code_nei_f: case jit_code_unlti_f:
1428 case jit_code_unlei_f: case jit_code_uneqi_f: case jit_code_ungei_f:
1429 case jit_code_ungti_f: case jit_code_ltgti_f: case jit_code_ordi_f:
1430 case jit_code_unordi_f:
1431 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_flt;
1433 case jit_code_addi_d: case jit_code_subi_d: case jit_code_rsbi_d:
1434 case jit_code_muli_d: case jit_code_divi_d: case jit_code_lti_d:
1435 case jit_code_lei_d: case jit_code_eqi_d: case jit_code_gei_d:
1436 case jit_code_gti_d: case jit_code_nei_d: case jit_code_unlti_d:
1437 case jit_code_unlei_d: case jit_code_uneqi_d: case jit_code_ungei_d:
1438 case jit_code_ungti_d: case jit_code_ltgti_d: case jit_code_ordi_d:
1439 case jit_code_unordi_d:
1440 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_dbl;
1442 case jit_code_addr: case jit_code_addxr: case jit_code_addcr:
1443 case jit_code_subr: case jit_code_subxr: case jit_code_subcr:
1444 case jit_code_mulr: case jit_code_divr: case jit_code_divr_u:
1445 case jit_code_remr: case jit_code_remr_u: case jit_code_andr:
1446 case jit_code_orr: case jit_code_xorr: case jit_code_lshr:
1447 case jit_code_rshr: case jit_code_rshr_u: case jit_code_ltr:
1448 case jit_code_ltr_u: case jit_code_ler: case jit_code_ler_u:
1449 case jit_code_eqr: case jit_code_ger: case jit_code_ger_u:
1450 case jit_code_gtr: case jit_code_gtr_u: case jit_code_ner:
1451 case jit_code_ldxr_c: case jit_code_ldxr_uc: case jit_code_ldxr_s:
1452 case jit_code_ldxr_us: case jit_code_ldxr_i: case jit_code_ldxr_ui:
1453 case jit_code_ldxr_l: case jit_code_addr_f: case jit_code_subr_f:
1454 case jit_code_mulr_f: case jit_code_divr_f: case jit_code_ltr_f:
1455 case jit_code_ler_f: case jit_code_eqr_f: case jit_code_ger_f:
1456 case jit_code_gtr_f: case jit_code_ner_f: case jit_code_unltr_f:
1457 case jit_code_unler_f: case jit_code_uneqr_f: case jit_code_unger_f:
1458 case jit_code_ungtr_f: case jit_code_ltgtr_f: case jit_code_ordr_f:
1459 case jit_code_unordr_f: case jit_code_ldxr_f: case jit_code_addr_d:
1460 case jit_code_subr_d: case jit_code_mulr_d: case jit_code_divr_d:
1461 case jit_code_ltr_d: case jit_code_ler_d: case jit_code_eqr_d:
1462 case jit_code_ger_d: case jit_code_gtr_d: case jit_code_ner_d:
1463 case jit_code_unltr_d: case jit_code_unler_d: case jit_code_uneqr_d:
1464 case jit_code_unger_d: case jit_code_ungtr_d: case jit_code_ltgtr_d:
1465 case jit_code_ordr_d: case jit_code_unordr_d: case jit_code_ldxr_d:
1466 case jit_code_movr_ww_d:
1467 mask = jit_cc_a0_reg|jit_cc_a0_chg|jit_cc_a1_reg|jit_cc_a2_reg;
1469 case jit_code_qmulr: case jit_code_qmulr_u:
1470 case jit_code_qdivr: case jit_code_qdivr_u:
1471 mask = jit_cc_a0_reg|jit_cc_a0_rlh|jit_cc_a0_chg|
1472 jit_cc_a1_reg|jit_cc_a2_reg;
1474 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1475 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1476 mask = jit_cc_a0_int|jit_cc_a1_reg;
1478 case jit_code_blti: case jit_code_blti_u: case jit_code_blei:
1479 case jit_code_blei_u: case jit_code_beqi: case jit_code_bgei:
1480 case jit_code_bgei_u: case jit_code_bgti: case jit_code_bgti_u:
1481 case jit_code_bnei: case jit_code_bmsi: case jit_code_bmci:
1482 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_int;
1484 case jit_code_blti_f: case jit_code_blei_f: case jit_code_beqi_f:
1485 case jit_code_bgei_f: case jit_code_bgti_f: case jit_code_bnei_f:
1486 case jit_code_bunlti_f: case jit_code_bunlei_f: case jit_code_buneqi_f:
1487 case jit_code_bungei_f: case jit_code_bungti_f: case jit_code_bltgti_f:
1488 case jit_code_bordi_f: case jit_code_bunordi_f:
1489 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_flt;
1491 case jit_code_blti_d: case jit_code_blei_d: case jit_code_beqi_d:
1492 case jit_code_bgei_d: case jit_code_bgti_d: case jit_code_bnei_d:
1493 case jit_code_bunlti_d: case jit_code_bunlei_d: case jit_code_buneqi_d:
1494 case jit_code_bungei_d: case jit_code_bungti_d: case jit_code_bltgti_d:
1495 case jit_code_bordi_d: case jit_code_bunordi_d:
1496 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_dbl;
1498 case jit_code_allocar: /* synthesized instructions make it
1499 * equivalent to jit_cc_a0_chg */
1500 case jit_code_str_c: case jit_code_str_s: case jit_code_str_i:
1501 case jit_code_str_l: case jit_code_str_f: case jit_code_str_d:
1502 mask = jit_cc_a0_reg|jit_cc_a1_reg;
1504 case jit_code_stxi_c: case jit_code_stxi_s: case jit_code_stxi_i:
1505 case jit_code_stxi_l: case jit_code_stxi_f: case jit_code_stxi_d:
1506 mask = jit_cc_a0_int|jit_cc_a1_reg|jit_cc_a2_reg;
1508 case jit_code_bltr: case jit_code_bltr_u: case jit_code_bler:
1509 case jit_code_bler_u: case jit_code_beqr: case jit_code_bger:
1510 case jit_code_bger_u: case jit_code_bgtr: case jit_code_bgtr_u:
1511 case jit_code_bner: case jit_code_bmsr: case jit_code_bmcr:
1512 case jit_code_bltr_f: case jit_code_bler_f: case jit_code_beqr_f:
1513 case jit_code_bger_f: case jit_code_bgtr_f: case jit_code_bner_f:
1514 case jit_code_bunltr_f: case jit_code_bunler_f: case jit_code_buneqr_f:
1515 case jit_code_bunger_f: case jit_code_bungtr_f: case jit_code_bltgtr_f:
1516 case jit_code_bordr_f: case jit_code_bunordr_f:case jit_code_bltr_d:
1517 case jit_code_bler_d: case jit_code_beqr_d: case jit_code_bger_d:
1518 case jit_code_bgtr_d: case jit_code_bner_d: case jit_code_bunltr_d:
1519 case jit_code_bunler_d: case jit_code_buneqr_d: case jit_code_bunger_d:
1520 case jit_code_bungtr_d: case jit_code_bltgtr_d: case jit_code_bordr_d:
1521 case jit_code_bunordr_d:
1522 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a2_reg;
1524 case jit_code_boaddi: case jit_code_boaddi_u: case jit_code_bxaddi:
1525 case jit_code_bxaddi_u: case jit_code_bosubi: case jit_code_bosubi_u:
1526 case jit_code_bxsubi: case jit_code_bxsubi_u:
1527 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_int;
1529 case jit_code_stxr_c: case jit_code_stxr_s: case jit_code_stxr_i:
1530 case jit_code_stxr_l: case jit_code_stxr_f: case jit_code_stxr_d:
1531 mask = jit_cc_a0_reg|jit_cc_a1_reg|jit_cc_a2_reg;
1533 case jit_code_boaddr: case jit_code_boaddr_u: case jit_code_bxaddr:
1534 case jit_code_bxaddr_u: case jit_code_bosubr: case jit_code_bosubr_u:
1535 case jit_code_bxsubr: case jit_code_bxsubr_u:
1536 mask = jit_cc_a0_jmp|jit_cc_a1_reg|jit_cc_a1_chg|jit_cc_a2_reg;
1546 _jit_patch_abs(jit_state_t *_jit, jit_node_t *instr, jit_pointer_t address)
1550 switch (instr->code) {
1551 case jit_code_movi: case jit_code_ldi_c: case jit_code_ldi_uc:
1552 case jit_code_ldi_s: case jit_code_ldi_us: case jit_code_ldi_i:
1553 case jit_code_ldi_ui: case jit_code_ldi_l: case jit_code_ldi_f:
1554 case jit_code_ldi_d:
1555 instr->v.p = address;
1557 case jit_code_sti_c: case jit_code_sti_s: case jit_code_sti_i:
1558 case jit_code_sti_l: case jit_code_sti_f: case jit_code_sti_d:
1559 instr->u.p = address;
1562 mask = jit_classify(instr->code);
1563 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1564 instr->u.p = address;
1569 _jit_patch_at(jit_state_t *_jit, jit_node_t *instr, jit_node_t *label)
1573 assert(!(instr->flag & jit_flag_node));
1574 instr->flag |= jit_flag_node;
1575 switch (instr->code) {
1577 assert(label->code == jit_code_label ||
1578 label->code == jit_code_data);
1580 if (label->code == jit_code_data)
1581 instr->flag |= jit_flag_data;
1584 assert(label->code == jit_code_label ||
1585 label->code == jit_code_epilog);
1589 mask = jit_classify(instr->code);
1590 assert((mask & (jit_cc_a0_reg|jit_cc_a0_jmp)) == jit_cc_a0_jmp);
1591 assert(label->code == jit_code_label);
1595 /* link field is used as list of nodes associated with a given label */
1596 instr->link = label->link;
1597 label->link = instr;
1601 _jit_optimize(jit_state_t *_jit)
1610 _jitc->function = NULL;
1613 sequential_labels();
1616 /* create initial mapping of live register values
1617 * at the start of a basic block */
1618 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1619 block = _jitc->blocks.ptr + offset;
1622 if (block->label->code != jit_code_epilog)
1626 /* set live state of registers not referenced in a block, but
1627 * referenced in a jump target or normal flow */
1630 for (offset = 0; offset < _jitc->blocks.offset; offset++) {
1631 block = _jitc->blocks.ptr + offset;
1634 if (block->label->code != jit_code_epilog)
1635 jit_follow(block, &todo);
1642 /* figure out labels that are only reached with a jump
1643 * and is required to do a simple redundant_store removal
1644 * on jit_beqi below */
1646 for (node = _jitc->head; node; node = node->next) {
1647 switch (node->code) {
1648 case jit_code_label:
1650 node->flag |= jit_flag_head;
1652 case jit_code_jmpi: case jit_code_jmpr:
1653 case jit_code_epilog:
1656 case jit_code_data: case jit_code_note:
1664 for (node = _jitc->head; node; node = node->next) {
1665 mask = jit_classify(node->code);
1666 if (mask & jit_cc_a0_reg)
1667 node->u.w &= ~jit_regno_patch;
1668 if (mask & jit_cc_a1_reg)
1669 node->v.w &= ~jit_regno_patch;
1670 if (mask & jit_cc_a2_reg)
1671 node->w.w &= ~jit_regno_patch;
1672 switch (node->code) {
1673 case jit_code_prolog:
1674 _jitc->function = _jitc->functions.ptr + node->w.w;
1676 case jit_code_epilog:
1677 _jitc->function = NULL;
1680 redundant_store(node, 1);
1683 redundant_store(node, 0);
1687 if (mask & jit_cc_a0_flt) {
1688 node->u.p = jit_data(&node->u.f, sizeof(jit_float32_t), 4);
1689 node->flag |= jit_flag_node | jit_flag_data;
1691 else if (mask & jit_cc_a0_dbl) {
1692 node->u.p = jit_data(&node->u.d, sizeof(jit_float64_t), 8);
1693 node->flag |= jit_flag_node | jit_flag_data;
1695 else if (mask & jit_cc_a1_flt) {
1696 node->v.p = jit_data(&node->v.f, sizeof(jit_float32_t), 4);
1697 node->flag |= jit_flag_node | jit_flag_data;
1699 else if (mask & jit_cc_a1_dbl) {
1700 node->v.p = jit_data(&node->v.d, sizeof(jit_float64_t), 8);
1701 node->flag |= jit_flag_node | jit_flag_data;
1703 else if (mask & jit_cc_a2_flt) {
1704 node->w.p = jit_data(&node->w.f, sizeof(jit_float32_t), 4);
1705 node->flag |= jit_flag_node | jit_flag_data;
1707 else if (mask & jit_cc_a2_dbl) {
1708 node->w.p = jit_data(&node->w.d, sizeof(jit_float64_t), 8);
1709 node->flag |= jit_flag_node | jit_flag_data;
1712 if (_jitc->function) {
1713 if ((mask & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
1714 (jit_cc_a0_reg|jit_cc_a0_chg)) {
1715 if (mask & jit_cc_a0_rlh) {
1716 jit_regset_setbit(&_jitc->function->regset,
1717 jit_regno(node->u.q.l));
1718 jit_regset_setbit(&_jitc->function->regset,
1719 jit_regno(node->u.q.h));
1722 jit_regset_setbit(&_jitc->function->regset,
1723 jit_regno(node->u.w));
1725 if ((mask & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
1726 (jit_cc_a1_reg|jit_cc_a1_chg))
1727 jit_regset_setbit(&_jitc->function->regset,
1728 jit_regno(node->v.w));
1729 if ((mask & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
1730 (jit_cc_a2_reg|jit_cc_a2_chg))
1731 jit_regset_setbit(&_jitc->function->regset,
1732 jit_regno(node->w.w));
1740 _jit_reglive(jit_state_t *_jit, jit_node_t *node)
1746 switch (node->code) {
1747 case jit_code_label: case jit_code_prolog: case jit_code_epilog:
1748 block = _jitc->blocks.ptr + node->v.w;
1749 jit_regset_set(&_jitc->reglive, &block->reglive);
1751 case jit_code_callr:
1752 value = jit_regno(node->u.w);
1753 if (!(node->u.w & jit_regno_patch)) {
1754 jit_regset_setbit(&_jitc->reglive, value);
1756 case jit_code_calli:
1757 for (value = 0; value < _jitc->reglen; value++) {
1758 spec = jit_class(_rvs[value].spec);
1759 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
1760 jit_regset_setbit(&_jitc->reglive, value);
1761 else if (!(spec & jit_class_sav))
1762 jit_regset_clrbit(&_jitc->reglive, value);
1766 value = jit_classify(node->code);
1767 if (value & jit_cc_a0_reg) {
1768 if (value & jit_cc_a0_rlh) {
1769 if (!(node->u.q.l & jit_regno_patch)) {
1770 if (value & jit_cc_a0_chg) {
1771 jit_regset_clrbit(&_jitc->reglive, node->u.q.l);
1772 jit_regset_setbit(&_jitc->regmask, node->u.q.l);
1775 jit_regset_setbit(&_jitc->reglive, node->u.q.l);
1777 if (!(node->u.q.h & jit_regno_patch)) {
1778 if (value & jit_cc_a0_chg) {
1779 jit_regset_clrbit(&_jitc->reglive, node->u.q.h);
1780 jit_regset_setbit(&_jitc->regmask, node->u.q.h);
1783 jit_regset_setbit(&_jitc->reglive, node->u.q.h);
1787 if (!(node->u.w & jit_regno_patch)) {
1788 if (value & jit_cc_a0_chg) {
1789 jit_regset_clrbit(&_jitc->reglive, node->u.w);
1790 jit_regset_setbit(&_jitc->regmask, node->u.w);
1793 jit_regset_setbit(&_jitc->reglive, node->u.w);
1797 if ((value & jit_cc_a1_reg) && !(node->v.w & jit_regno_patch)) {
1798 if (value & jit_cc_a1_chg) {
1799 jit_regset_clrbit(&_jitc->reglive, node->v.w);
1800 jit_regset_setbit(&_jitc->regmask, node->v.w);
1803 jit_regset_setbit(&_jitc->reglive, node->v.w);
1805 if ((value & jit_cc_a2_reg) && !(node->w.w & jit_regno_patch)) {
1806 if (value & jit_cc_a2_chg) {
1807 jit_regset_clrbit(&_jitc->reglive, node->w.w);
1808 jit_regset_setbit(&_jitc->regmask, node->w.w);
1811 jit_regset_setbit(&_jitc->reglive, node->w.w);
1813 if (jit_regset_set_p(&_jitc->regmask)) {
1814 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
1815 if (jit_regset_set_p(&_jitc->regmask)) {
1816 /* any unresolved live state is considered as live */
1817 jit_regset_ior(&_jitc->reglive,
1818 &_jitc->reglive, &_jitc->regmask);
1819 jit_regset_set_ui(&_jitc->regmask, 0);
1827 _jit_regarg_set(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
1832 if (value & jit_cc_a0_reg) {
1833 if (value & jit_cc_a0_rlh) {
1834 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.l));
1835 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.q.h));
1838 jit_regset_setbit(&_jitc->regarg, jit_regno(node->u.w));
1840 if (value & jit_cc_a1_reg)
1841 jit_regset_setbit(&_jitc->regarg, jit_regno(node->v.w));
1842 if (value & jit_cc_a2_reg)
1843 jit_regset_setbit(&_jitc->regarg, jit_regno(node->w.w));
1847 _jit_regarg_clr(jit_state_t *_jit, jit_node_t *node, jit_int32_t value)
1850 jit_size_collect(node);
1852 if (value & jit_cc_a0_reg) {
1853 if (value & jit_cc_a0_rlh) {
1854 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.l));
1855 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.q.h));
1858 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->u.w));
1860 if (value & jit_cc_a1_reg)
1861 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->v.w));
1862 if (value & jit_cc_a2_reg)
1863 jit_regset_clrbit(&_jitc->regarg, jit_regno(node->w.w));
1867 _jit_realize(jit_state_t *_jit)
1869 assert(!_jitc->realize);
1870 if (_jitc->function)
1875 /* ensure it is aligned */
1876 _jitc->data.offset = (_jitc->data.offset + 7) & -8;
1879 /* Heuristic to guess code buffer size */
1881 _jit->code.length = _jitc->pool.length * 1024 * _jitc->mult;
1883 _jit->code.length = jit_get_size();
1888 _jit_dataset(jit_state_t *_jit)
1897 assert(!_jitc->dataset);
1898 if (!_jit->user_data) {
1900 /* create read only data buffer */
1901 _jit->data.length = (_jitc->data.offset +
1902 /* reserve space for annotations */
1903 _jitc->note.size + 4095) & -4096;
1905 mmap_fd = open("/dev/zero", O_RDWR);
1907 _jit->data.ptr = mmap(NULL, _jit->data.length,
1908 PROT_READ | PROT_WRITE,
1909 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
1910 assert(_jit->data.ptr != MAP_FAILED);
1916 if (!_jitc->no_data)
1917 jit_memcpy(_jit->data.ptr, _jitc->data.ptr, _jitc->data.offset);
1919 if (_jitc->no_note) {
1920 /* Space for one note is always allocated, so revert it here
1921 * if after jit_new_state was called, it is also requested to
1922 * not generate annotation information */
1923 _jit->note.length = 0;
1924 _jitc->note.size = 0;
1927 _jitc->note.base = _jit->data.ptr;
1928 if (!_jitc->no_data)
1929 _jitc->note.base += _jitc->data.offset;
1930 memset(_jitc->note.base, 0, _jitc->note.size);
1933 if (_jit->user_data)
1934 /* Need the temporary hashed data until jit_emit is finished */
1935 ptr = _jitc->no_data ? _jitc->data.ptr : _jit->data.ptr;
1937 ptr = _jit->data.ptr;
1938 /* Temporary hashed data no longer required */
1939 jit_free((jit_pointer_t *)&_jitc->data.ptr);
1942 for (offset = 0; offset < _jitc->data.size; offset++) {
1943 for (node = _jitc->data.table[offset]; node; node = node->next) {
1944 node->flag |= jit_flag_patch;
1945 node->u.w = (jit_word_t)(ptr + node->u.w);
1953 _jit_get_code(jit_state_t *_jit, jit_word_t *length)
1955 assert(_jitc->realize);
1958 /* If code already generated, return exact size of code */
1959 *length = _jit->pc.uc - _jit->code.ptr;
1961 /* Else return current size of the code buffer */
1962 *length = _jit->code.length;
1965 return (_jit->code.ptr);
1969 _jit_set_code(jit_state_t *_jit, jit_pointer_t ptr, jit_word_t length)
1971 assert(_jitc->realize);
1972 _jit->code.ptr = ptr;
1973 _jit->code.length = length;
1974 _jit->user_code = 1;
1978 _jit_get_data(jit_state_t *_jit, jit_word_t *data_size, jit_word_t *note_size)
1980 assert(_jitc->realize);
1982 *data_size = _jitc->data.offset;
1984 *note_size = _jitc->note.size;
1985 return (_jit->data.ptr);
1989 _jit_set_data(jit_state_t *_jit, jit_pointer_t ptr,
1990 jit_word_t length, jit_word_t flags)
1992 assert(_jitc->realize);
1993 if (flags & JIT_DISABLE_DATA)
1996 assert(length >= _jitc->data.offset);
1997 if (flags & JIT_DISABLE_NOTE)
2000 if (flags & JIT_DISABLE_DATA)
2001 assert(length >= _jitc->note.size);
2003 assert(length >= _jitc->data.offset + _jitc->note.size);
2005 _jit->data.ptr = ptr;
2006 _jit->data.length = length;
2007 _jit->user_data = 1;
2011 _jit_emit(jit_state_t *_jit)
2021 if (!_jitc->realize)
2024 if (!_jitc->dataset)
2029 if (!_jit->user_code) {
2031 mmap_fd = open("/dev/zero", O_RDWR);
2033 _jit->code.ptr = mmap(NULL, _jit->code.length,
2034 PROT_EXEC | PROT_READ | PROT_WRITE,
2035 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2036 assert(_jit->code.ptr != MAP_FAILED);
2038 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2039 jit_get_max_instr();
2040 _jit->pc.uc = _jit->code.ptr;
2043 if ((code = emit_code()) == NULL) {
2044 _jitc->patches.offset = 0;
2045 for (node = _jitc->head; node; node = node->next) {
2047 (node->code == jit_code_label ||
2048 node->code == jit_code_epilog))
2049 node->flag &= ~jit_flag_patch;
2051 if (_jit->user_code)
2055 length = _jitc->pool.length * 1024 * _jitc->mult;
2057 /* Should only happen on very special cases */
2058 length = _jit->code.length + 4096;
2062 munmap(_jit->code.ptr, _jit->code.length);
2067 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2068 _jit->code.ptr, length, 0);
2070 _jit->code.ptr = mremap(_jit->code.ptr, _jit->code.length,
2071 length, MREMAP_MAYMOVE, NULL);
2074 _jit->code.ptr = mmap(NULL, length,
2075 PROT_EXEC | PROT_READ | PROT_WRITE,
2076 MAP_PRIVATE | MAP_ANON, mmap_fd, 0);
2079 assert(_jit->code.ptr != MAP_FAILED);
2080 _jit->code.length = length;
2081 _jitc->code.end = _jit->code.ptr + _jit->code.length -
2082 jit_get_max_instr();
2083 _jit->pc.uc = _jit->code.ptr;
2090 if (!_jit->user_code)
2095 if (!_jitc->no_note)
2098 if (_jit->user_data)
2099 jit_free((jit_pointer_t *)&_jitc->data.ptr);
2101 result = mprotect(_jit->data.ptr, _jit->data.length, PROT_READ);
2102 assert(result == 0);
2104 if (!_jit->user_code) {
2105 result = mprotect(_jit->code.ptr, _jit->code.length,
2106 PROT_READ | PROT_EXEC);
2107 assert(result == 0);
2110 return (_jit->code.ptr);
2116 _jit_frame(jit_state_t *_jit, jit_int32_t frame)
2118 jit_trampoline(frame, 1);
2122 _jit_tramp(jit_state_t *_jit, jit_int32_t frame)
2124 jit_trampoline(frame, 0);
2128 _jit_trampoline(jit_state_t *_jit, jit_int32_t frame, jit_bool_t prolog)
2132 /* Must be called after prolog, actually, just to simplify
2133 * tests and know there is a current function and that
2134 * _jitc->function->self.aoff is at the before any alloca value */
2135 assert(_jitc->tail && _jitc->tail->code == jit_code_prolog);
2137 /* + 24 for 3 possible spilled temporaries (that could be a double) */
2139 #if defined(__hppa__)
2140 frame += _jitc->function->self.aoff;
2142 frame -= _jitc->function->self.aoff;
2144 _jitc->function->frame = frame;
2146 _jitc->function->define_frame = 1;
2148 _jitc->function->assume_frame = 1;
2149 for (regno = 0; regno < _jitc->reglen; regno++)
2150 if (jit_class(_rvs[regno].spec) & jit_class_sav)
2151 jit_regset_setbit(&_jitc->function->regset, regno);
2154 /* Compute initial reglive and regmask set values of a basic block.
2155 * reglive is the set of known live registers
2156 * regmask is the set of registers not referenced in the block
2157 * Registers in regmask might be live.
2160 _jit_setup(jit_state_t *_jit, jit_block_t *block)
2164 unsigned long value;
2166 jit_regset_set_mask(&block->regmask, _jitc->reglen);
2167 for (value = 0; value < _jitc->reglen; ++value)
2168 if (!(jit_class(_rvs[value].spec) & (jit_class_gpr|jit_class_fpr)))
2169 jit_regset_clrbit(&block->regmask, value);
2171 for (node = block->label->next; node; node = node->next) {
2172 switch (node->code) {
2173 case jit_code_label: case jit_code_prolog:
2174 case jit_code_epilog:
2177 /* Check argument registers in reverse order to properly
2178 * handle registers that are both, argument and result */
2179 value = jit_classify(node->code);
2180 if ((value & jit_cc_a2_reg) &&
2181 !(node->w.w & jit_regno_patch) &&
2182 jit_regset_tstbit(&block->regmask, node->w.w)) {
2183 live = !(value & jit_cc_a2_chg);
2184 jit_regset_clrbit(&block->regmask, node->w.w);
2186 jit_regset_setbit(&block->reglive, node->w.w);
2188 if ((value & jit_cc_a1_reg) &&
2189 !(node->v.w & jit_regno_patch) &&
2190 jit_regset_tstbit(&block->regmask, node->v.w)) {
2191 live = !(value & jit_cc_a1_chg);
2192 jit_regset_clrbit(&block->regmask, node->v.w);
2194 jit_regset_setbit(&block->reglive, node->v.w);
2196 if (value & jit_cc_a0_reg) {
2197 live = !(value & jit_cc_a0_chg);
2198 if (value & jit_cc_a0_rlh) {
2199 if (!(node->u.q.l & jit_regno_patch) &&
2200 jit_regset_tstbit(&block->regmask, node->u.q.l)) {
2201 jit_regset_clrbit(&block->regmask, node->u.q.l);
2203 jit_regset_setbit(&block->reglive, node->u.q.l);
2205 if (!(node->u.q.h & jit_regno_patch) &&
2206 jit_regset_tstbit(&block->regmask, node->u.q.h)) {
2207 jit_regset_clrbit(&block->regmask, node->u.q.h);
2209 jit_regset_setbit(&block->reglive, node->u.q.h);
2213 if (!(node->u.w & jit_regno_patch) &&
2214 jit_regset_tstbit(&block->regmask, node->u.w)) {
2215 jit_regset_clrbit(&block->regmask, node->u.w);
2217 jit_regset_setbit(&block->reglive, node->u.w);
2226 /* Update regmask and reglive of blocks at entry point of branch targets
2227 * or normal flow that have a live register not used in this block.
2230 _jit_follow(jit_state_t *_jit, jit_block_t *block, jit_bool_t *todo)
2236 unsigned long value;
2238 jit_regset_t reglive;
2239 jit_regset_t regmask;
2240 jit_regset_t regtemp;
2242 jit_regset_set(®live, &block->reglive);
2243 jit_regset_set(®mask, &block->regmask);
2244 for (node = block->label->next; node; node = node->next) {
2245 switch (node->code) {
2246 case jit_code_label:
2247 /* Do not consider jmpi and jmpr cannot jump to the
2248 * next instruction. */
2249 next = _jitc->blocks.ptr + node->v.w;
2250 /* Set of live registers in next block that are at unknown
2251 * state in this block. */
2252 jit_regset_and(®temp, ®mask, &next->reglive);
2253 if (jit_regset_set_p(®temp)) {
2254 /* Add live state of next block to current block. */
2255 jit_regset_ior(&block->reglive, &block->reglive, ®temp);
2256 /* Remove from unknown state bitmask. */
2257 jit_regset_com(®temp, ®temp);
2258 jit_regset_and(&block->regmask, &block->regmask, ®temp);
2261 case jit_code_prolog:
2262 case jit_code_epilog:
2264 case jit_code_callr:
2265 value = jit_regno(node->u.w);
2266 if (!(node->u.w & jit_regno_patch)) {
2267 if (jit_regset_tstbit(®mask, value)) {
2268 jit_regset_clrbit(®mask, value);
2269 jit_regset_setbit(®live, value);
2272 case jit_code_calli:
2273 for (value = 0; value < _jitc->reglen; ++value) {
2274 value = jit_regset_scan1(®mask, value);
2275 if (value >= _jitc->reglen)
2277 spec = jit_class(_rvs[value].spec);
2278 if (!(spec & jit_class_sav))
2279 jit_regset_clrbit(®mask, value);
2280 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2281 jit_regset_setbit(®live, value);
2285 value = jit_classify(node->code);
2286 if (value & jit_cc_a2_reg) {
2287 if (!(node->w.w & jit_regno_patch)) {
2288 if (jit_regset_tstbit(®mask, node->w.w)) {
2289 jit_regset_clrbit(®mask, node->w.w);
2290 if (!(value & jit_cc_a2_chg))
2291 jit_regset_setbit(®live, node->w.w);
2295 if (value & jit_cc_a1_reg) {
2296 if (!(node->v.w & jit_regno_patch)) {
2297 if (jit_regset_tstbit(®mask, node->v.w)) {
2298 jit_regset_clrbit(®mask, node->v.w);
2299 if (!(value & jit_cc_a1_chg))
2300 jit_regset_setbit(®live, node->v.w);
2304 if (value & jit_cc_a0_reg) {
2305 if (value & jit_cc_a0_rlh) {
2306 if (!(node->u.q.l & jit_regno_patch)) {
2307 if (jit_regset_tstbit(®mask, node->u.q.l)) {
2308 jit_regset_clrbit(®mask, node->u.q.l);
2309 if (!(value & jit_cc_a0_chg))
2310 jit_regset_setbit(®live, node->u.q.l);
2313 if (!(node->u.q.h & jit_regno_patch)) {
2314 if (jit_regset_tstbit(®mask, node->u.q.h)) {
2315 jit_regset_clrbit(®mask, node->u.q.h);
2316 if (!(value & jit_cc_a0_chg))
2317 jit_regset_setbit(®live, node->u.q.h);
2322 if (!(node->u.w & jit_regno_patch)) {
2323 if (jit_regset_tstbit(®mask, node->u.w)) {
2324 jit_regset_clrbit(®mask, node->u.w);
2325 if (!(value & jit_cc_a0_chg))
2326 jit_regset_setbit(®live, node->u.w);
2331 if (value & jit_cc_a0_jmp) {
2332 if (node->flag & jit_flag_node) {
2334 /* Do not consider jmpi and jmpr cannot jump to the
2335 * next instruction. */
2336 next = _jitc->blocks.ptr + label->v.w;
2337 jit_regset_and(®temp, ®mask, &next->reglive);
2338 if (jit_regset_set_p(®temp)) {
2339 /* Add live state. */
2340 jit_regset_ior(&block->reglive,
2341 &block->reglive, ®temp);
2342 /* Remove from unknown state bitmask. */
2343 jit_regset_com(®temp, ®temp);
2344 jit_regset_and(&block->regmask,
2345 &block->regmask, ®temp);
2350 /* Jump to unknown location.
2351 * This is a pitfall of the implementation.
2352 * Only jmpi to not a jit code should reach here,
2353 * or a jmpr of a computed address.
2354 * Because the implementation needs jit_class_nospill
2355 * registers, must treat jmpr as a function call. This
2356 * means that only JIT_Vn registers can be trusted on
2359 for (regno = 0; regno < _jitc->reglen; regno++) {
2360 spec = jit_class(_rvs[regno].spec);
2361 if (jit_regset_tstbit(®mask, regno) &&
2362 (spec & (jit_class_gpr|jit_class_fpr)) &&
2363 !(spec & jit_class_sav))
2364 jit_regset_clrbit(®mask, regno);
2366 /* Assume non callee save registers are live due
2367 * to jump to unknown location. */
2368 /* Treat all callee save as live. */
2369 jit_regset_ior(®live, ®live, ®mask);
2370 /* Treat anything else as dead. */
2371 jit_regset_set_ui(®mask, 0);
2379 /* Follow code generation up to finding a label or end of code.
2380 * When finding a label, update the set of live registers.
2381 * On branches, update based on taken branch or normal flow.
2384 _jit_update(jit_state_t *_jit, jit_node_t *node,
2385 jit_regset_t *live, jit_regset_t *mask)
2389 unsigned long value;
2392 jit_regset_t regtemp;
2394 for (; node; node = node->next) {
2395 if (jit_regset_set_p(mask) == 0)
2397 switch (node->code) {
2398 case jit_code_label:
2399 block = _jitc->blocks.ptr + node->v.w;
2400 jit_regset_and(®temp, mask, &block->reglive);
2401 if (jit_regset_set_p(®temp)) {
2402 /* Add live state. */
2403 jit_regset_ior(live, live, ®temp);
2404 /* Remove from unknown state bitmask. */
2405 jit_regset_com(®temp, ®temp);
2406 jit_regset_and(mask, mask, ®temp);
2409 case jit_code_prolog:
2410 jit_regset_set_ui(mask, 0);
2412 case jit_code_epilog:
2413 jit_regset_set_ui(mask, 0);
2415 case jit_code_callr:
2416 value = jit_regno(node->u.w);
2417 if (!(node->u.w & jit_regno_patch)) {
2418 if (jit_regset_tstbit(mask, value)) {
2419 jit_regset_clrbit(mask, value);
2420 jit_regset_setbit(live, value);
2423 case jit_code_calli:
2424 for (value = 0; value < _jitc->reglen; ++value) {
2425 value = jit_regset_scan1(mask, value);
2426 if (value >= _jitc->reglen)
2428 spec = jit_class(_rvs[value].spec);
2429 if (!(spec & jit_class_sav))
2430 jit_regset_clrbit(mask, value);
2431 if ((spec & jit_class_arg) && jit_regarg_p(node, value))
2432 jit_regset_setbit(live, value);
2436 value = jit_classify(node->code);
2437 if (value & jit_cc_a2_reg) {
2438 if (!(node->w.w & jit_regno_patch)) {
2439 if (jit_regset_tstbit(mask, node->w.w)) {
2440 jit_regset_clrbit(mask, node->w.w);
2441 if (!(value & jit_cc_a2_chg))
2442 jit_regset_setbit(live, node->w.w);
2446 if (value & jit_cc_a1_reg) {
2447 if (!(node->v.w & jit_regno_patch)) {
2448 if (jit_regset_tstbit(mask, node->v.w)) {
2449 jit_regset_clrbit(mask, node->v.w);
2450 if (!(value & jit_cc_a1_chg))
2451 jit_regset_setbit(live, node->v.w);
2455 if (value & jit_cc_a0_reg) {
2456 if (value & jit_cc_a0_rlh) {
2457 if (!(node->u.q.l & jit_regno_patch)) {
2458 if (jit_regset_tstbit(mask, node->u.q.l)) {
2459 jit_regset_clrbit(mask, node->u.q.l);
2460 if (!(value & jit_cc_a0_chg))
2461 jit_regset_setbit(live, node->u.q.l);
2464 if (!(node->u.q.h & jit_regno_patch)) {
2465 if (jit_regset_tstbit(mask, node->u.q.h)) {
2466 jit_regset_clrbit(mask, node->u.q.h);
2467 if (!(value & jit_cc_a0_chg))
2468 jit_regset_setbit(live, node->u.q.h);
2473 if (!(node->u.w & jit_regno_patch)) {
2474 if (jit_regset_tstbit(mask, node->u.w)) {
2475 jit_regset_clrbit(mask, node->u.w);
2476 if (!(value & jit_cc_a0_chg))
2477 jit_regset_setbit(live, node->u.w);
2482 if (value & jit_cc_a0_jmp) {
2483 if (node->flag & jit_flag_node) {
2485 /* Do not consider jmpi and jmpr cannot jump to the
2486 * next instruction. */
2487 block = _jitc->blocks.ptr + label->v.w;
2488 jit_regset_and(®temp, mask, &block->reglive);
2489 if (jit_regset_set_p(®temp)) {
2490 /* Add live state. */
2491 jit_regset_ior(live, live, ®temp);
2492 /* Remove from unknown state bitmask. */
2493 jit_regset_com(®temp, ®temp);
2494 jit_regset_and(mask, mask, ®temp);
2498 /* Jump to unknown location.
2499 * This is a pitfall of the implementation.
2500 * Only jmpi to not a jit code should reach here,
2501 * or a jmpr of a computed address.
2502 * Because the implementation needs jit_class_nospill
2503 * registers, must treat jmpr as a function call. This
2504 * means that only JIT_Vn registers can be trusted on
2507 for (regno = 0; regno < _jitc->reglen; regno++) {
2508 spec = jit_class(_rvs[regno].spec);
2509 if (jit_regset_tstbit(mask, regno) &&
2510 (spec & (jit_class_gpr|jit_class_fpr)) &&
2511 !(spec & jit_class_sav))
2512 jit_regset_clrbit(mask, regno);
2514 /* Assume non callee save registers are live due
2515 * to jump to unknown location. */
2516 /* Treat all callee save as live. */
2517 jit_regset_ior(live, live, mask);
2518 /* Treat anything else as dead. */
2519 jit_regset_set_ui(mask, 0);
2528 _thread_jumps(jit_state_t *_jit)
2535 for (prev = node = _jitc->head; node;) {
2537 switch (node->code) {
2539 if (redundant_jump(prev, node)) {
2543 if (shortcut_jump(prev, node))
2547 case jit_code_callr: case jit_code_calli:
2548 /* non optimizable jump like code */
2551 mask = jit_classify(node->code);
2552 if (mask & jit_cc_a0_jmp) {
2553 if (reverse_jump(prev, node) ||
2554 shortcut_jump(prev, node))
2565 _sequential_labels(jit_state_t *_jit)
2573 for (prev = node = _jitc->head; node; node = next) {
2575 if (node->code == jit_code_label) {
2578 del_label(prev, node);
2581 if (prev != node && prev->code == jit_code_label) {
2582 if ((jump = node->link)) {
2583 for (; jump; jump = link) {
2586 jump->link = prev->link;
2591 del_label(prev, node);
2595 if (next && next->code == jit_code_label && !next->flag) {
2596 if ((jump = next->link)) {
2597 for (; jump; jump = link) {
2600 jump->link = node->link;
2605 del_label(node, next);
2615 _split_branches(jit_state_t *_jit)
2622 for (node = _jitc->head; node; node = next) {
2623 if ((next = node->next)) {
2624 if (next->code == jit_code_label ||
2625 next->code == jit_code_prolog ||
2626 next->code == jit_code_epilog)
2628 /* split block on branches */
2629 if (jit_classify(node->code) & jit_cc_a0_jmp) {
2630 label = new_node(jit_code_label);
2633 if (_jitc->blocks.offset >= _jitc->blocks.length) {
2636 length = _jitc->blocks.length + 16;
2637 jit_realloc((jit_pointer_t *)&_jitc->blocks.ptr,
2638 _jitc->blocks.length * sizeof(jit_block_t),
2639 length * sizeof(jit_block_t));
2640 _jitc->blocks.length = length;
2642 block = _jitc->blocks.ptr + _jitc->blocks.offset;
2643 block->label = label;
2644 label->v.w = _jitc->blocks.offset;
2645 jit_regset_new(&block->reglive);
2646 jit_regset_new(&block->regmask);
2647 ++_jitc->blocks.offset;
2654 _shortcut_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2661 if (!(node->flag & jit_flag_node))
2663 assert(node->code != jit_code_jmpr);
2664 cond = node->code != jit_code_jmpi;
2666 for (next = jump->next; next; next = next->next) {
2667 switch (next->code) {
2669 if (!(next->flag & jit_flag_node))
2671 if (jump->link == node)
2672 jump->link = node->link;
2674 for (temp = jump->link;
2677 assert(temp != NULL);
2678 temp->link = node->link;
2682 node->link = jump->link;
2688 node->code = jit_code_jmpr;
2689 node->u.w = next->u.w;
2691 node->flag &= ~jit_flag_node;
2693 case jit_code_note: case jit_code_label:
2703 _redundant_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2705 jit_node_t *local_prev;
2706 jit_node_t *local_next;
2708 if (!(node->flag & jit_flag_node))
2710 for (local_prev = node, local_next = node->next;
2712 local_prev = local_next, local_next = local_next->next) {
2714 switch (local_next->code) {
2715 case jit_code_label: case jit_code_epilog:
2716 if (node->u.n == local_next) {
2717 if (local_next->link == node)
2718 local_next->link = node->link;
2720 for (local_prev = local_next->link;
2721 local_prev->link != node;
2722 local_prev = local_prev->link)
2723 assert(local_prev != NULL);
2724 local_prev->link = node->link;
2726 del_node(prev, node);
2730 case jit_code_name: case jit_code_note:
2731 case jit_code_align:
2741 reverse_jump_code(jit_code_t code)
2744 case jit_code_bltr: return (jit_code_bger);
2745 case jit_code_blti: return (jit_code_bgei);
2746 case jit_code_bltr_u: return (jit_code_bger_u);
2747 case jit_code_blti_u: return (jit_code_bgei_u);
2748 case jit_code_bler: return (jit_code_bgtr);
2749 case jit_code_blei: return (jit_code_bgti);
2750 case jit_code_bler_u: return (jit_code_bgtr_u);
2751 case jit_code_blei_u: return (jit_code_bgti_u);
2752 case jit_code_beqr: return (jit_code_bner);
2753 case jit_code_beqi: return (jit_code_bnei);
2754 case jit_code_bger: return (jit_code_bltr);
2755 case jit_code_bgei: return (jit_code_blti);
2756 case jit_code_bger_u: return (jit_code_bltr_u);
2757 case jit_code_bgei_u: return (jit_code_blti_u);
2758 case jit_code_bgtr: return (jit_code_bler);
2759 case jit_code_bgti: return (jit_code_blei);
2760 case jit_code_bgtr_u: return (jit_code_bler_u);
2761 case jit_code_bgti_u: return (jit_code_blei_u);
2762 case jit_code_bner: return (jit_code_beqr);
2763 case jit_code_bnei: return (jit_code_beqi);
2764 case jit_code_bmsr: return (jit_code_bmcr);
2765 case jit_code_bmsi: return (jit_code_bmci);
2766 case jit_code_bmcr: return (jit_code_bmsr);
2767 case jit_code_bmci: return (jit_code_bmsi);
2768 case jit_code_bltr_f: return (jit_code_bunger_f);
2769 case jit_code_blti_f: return (jit_code_bungei_f);
2770 case jit_code_bler_f: return (jit_code_bungtr_f);
2771 case jit_code_blei_f: return (jit_code_bungti_f);
2773 case jit_code_beqr_f: return (jit_code_bner_f);
2774 case jit_code_beqi_f: return (jit_code_bnei_f);
2776 case jit_code_bger_f: return (jit_code_bunltr_f);
2777 case jit_code_bgei_f: return (jit_code_bunlti_f);
2778 case jit_code_bgtr_f: return (jit_code_bunler_f);
2779 case jit_code_bgti_f: return (jit_code_bunlei_f);
2781 case jit_code_bner_f: return (jit_code_beqr_f);
2782 case jit_code_bnei_f: return (jit_code_beqr_f);
2784 case jit_code_bunltr_f: return (jit_code_bger_f);
2785 case jit_code_bunlti_f: return (jit_code_bgei_f);
2786 case jit_code_bunler_f: return (jit_code_bgtr_f);
2787 case jit_code_bunlei_f: return (jit_code_bgti_f);
2789 case jit_code_buneqr_f: return (jit_code_bltgtr_f);
2790 case jit_code_buneqi_f: return (jit_code_bltgti_f);
2792 case jit_code_bunger_f: return (jit_code_bltr_f);
2793 case jit_code_bungei_f: return (jit_code_blti_f);
2794 case jit_code_bungtr_f: return (jit_code_bler_f);
2795 case jit_code_bungti_f: return (jit_code_blei_f);
2797 case jit_code_bltgtr_f: return (jit_code_buneqr_f);
2798 case jit_code_bltgti_f: return (jit_code_buneqi_f);
2800 case jit_code_bordr_f: return (jit_code_bunordr_f);
2801 case jit_code_bordi_f: return (jit_code_bunordi_f);
2802 case jit_code_bunordr_f:return (jit_code_bordr_f);
2803 case jit_code_bunordi_f:return (jit_code_bordi_f);
2804 case jit_code_bltr_d: return (jit_code_bunger_d);
2805 case jit_code_blti_d: return (jit_code_bungei_d);
2806 case jit_code_bler_d: return (jit_code_bungtr_d);
2807 case jit_code_blei_d: return (jit_code_bungti_d);
2809 case jit_code_beqr_d: return (jit_code_bner_d);
2810 case jit_code_beqi_d: return (jit_code_bnei_d);
2812 case jit_code_bger_d: return (jit_code_bunltr_d);
2813 case jit_code_bgei_d: return (jit_code_bunlti_d);
2814 case jit_code_bgtr_d: return (jit_code_bunler_d);
2815 case jit_code_bgti_d: return (jit_code_bunlei_d);
2817 case jit_code_bner_d: return (jit_code_beqr_d);
2818 case jit_code_bnei_d: return (jit_code_beqi_d);
2820 case jit_code_bunltr_d: return (jit_code_bger_d);
2821 case jit_code_bunlti_d: return (jit_code_bgei_d);
2822 case jit_code_bunler_d: return (jit_code_bgtr_d);
2823 case jit_code_bunlei_d: return (jit_code_bgti_d);
2825 case jit_code_buneqr_d: return (jit_code_bltgtr_d);
2826 case jit_code_buneqi_d: return (jit_code_bltgti_d);
2828 case jit_code_bunger_d: return (jit_code_bltr_d);
2829 case jit_code_bungei_d: return (jit_code_blti_d);
2830 case jit_code_bungtr_d: return (jit_code_bler_d);
2831 case jit_code_bungti_d: return (jit_code_blei_d);
2833 case jit_code_bltgtr_d: return (jit_code_buneqr_d);
2834 case jit_code_bltgti_d: return (jit_code_buneqi_d);
2836 case jit_code_bordr_d: return (jit_code_bunordr_d);
2837 case jit_code_bordi_d: return (jit_code_bunordi_d);
2838 case jit_code_bunordr_d:return (jit_code_bordr_d);
2839 case jit_code_bunordi_d:return (jit_code_bordi_d);
2840 case jit_code_boaddr: return (jit_code_bxaddr);
2841 case jit_code_boaddi: return (jit_code_bxaddi);
2842 case jit_code_boaddr_u: return (jit_code_bxaddr_u);
2843 case jit_code_boaddi_u: return (jit_code_bxaddi_u);
2844 case jit_code_bxaddr: return (jit_code_boaddr);
2845 case jit_code_bxaddi: return (jit_code_boaddi);
2846 case jit_code_bxaddr_u: return (jit_code_boaddr_u);
2847 case jit_code_bxaddi_u: return (jit_code_boaddi_u);
2848 case jit_code_bosubr: return (jit_code_bxsubr);
2849 case jit_code_bosubi: return (jit_code_bxsubi);
2850 case jit_code_bosubr_u: return (jit_code_bxsubr_u);
2851 case jit_code_bosubi_u: return (jit_code_bxsubi_u);
2852 case jit_code_bxsubr: return (jit_code_bosubr);
2853 case jit_code_bxsubi: return (jit_code_bosubi);
2854 case jit_code_bxsubr_u: return (jit_code_bosubr_u);
2855 case jit_code_bxsubi_u: return (jit_code_bosubi_u);
2856 default: abort(); /* invalid jump code */
2861 * change common pattern:
2862 * <cond_jump L0> <jump L1> <label L0>
2864 * <reverse_cond_jump L1>
2867 _reverse_jump(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
2869 jit_node_t *local_prev;
2870 jit_node_t *local_next;
2871 jit_node_t *local_jump;
2873 if (!(node->flag & jit_flag_node))
2875 /* =><cond_jump L0> <jump L1> <label L0> */
2876 local_next = node->next;
2877 if (local_next->code != jit_code_jmpi ||
2878 !(local_next->flag & jit_flag_node))
2880 /* <cond_jump L0> =><jump L1> <label L0> */
2882 local_jump = local_next->u.n;
2883 for (local_prev = local_next, local_next = local_next->next;
2885 local_prev = local_next, local_next = local_next->next) {
2886 switch (local_next->code) {
2887 case jit_code_label: case jit_code_epilog:
2888 if (node->u.n == local_next) {
2889 if (local_next->link == node)
2890 local_next->link = node->link;
2892 for (local_prev = local_next->link;
2893 local_prev->link != node;
2894 local_prev = local_prev->link)
2895 assert(local_prev != NULL);
2896 local_prev->link = node->link;
2898 del_node(node, node->next);
2899 node->code = reverse_jump_code(node->code);
2900 node->u.n = local_jump;
2901 node->link = local_jump->link;
2902 local_jump->link = node;
2916 _redundant_store(jit_state_t *_jit, jit_node_t *node, jit_bool_t jump)
2926 if (prev->code == jit_code_epilog)
2928 assert(prev->code == jit_code_label);
2929 if ((prev->flag & jit_flag_head) || node->link || prev->link != node)
2930 /* multiple sources */
2932 /* if there are sequential labels it will return below */
2937 regno = jit_regno(node->v.w);
2938 for (iter = prev->next; iter; prev = iter, iter = iter->next) {
2939 switch (iter->code) {
2940 case jit_code_label: case jit_code_prolog:
2941 case jit_code_epilog:
2944 if (regno == jit_regno(iter->u.w)) {
2945 if (iter->flag || iter->v.w != word)
2947 del_node(prev, iter);
2952 spec = jit_classify(iter->code);
2953 if (spec & jit_cc_a0_jmp)
2955 if ((spec & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
2956 (jit_cc_a0_reg|jit_cc_a0_chg)) {
2957 if (spec & jit_cc_a0_rlh) {
2958 if (regno == jit_regno(iter->u.q.l) ||
2959 regno == jit_regno(iter->u.q.h))
2963 if (regno == jit_regno(iter->u.w))
2967 if ((spec & (jit_cc_a1_reg|jit_cc_a1_chg)) ==
2968 (jit_cc_a1_reg|jit_cc_a1_chg)) {
2969 if (regno == jit_regno(iter->v.w))
2972 if ((spec & (jit_cc_a2_reg|jit_cc_a2_chg)) ==
2973 (jit_cc_a2_reg|jit_cc_a2_chg)) {
2974 if (regno == jit_regno(iter->w.w))
2983 _simplify_movr(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
2984 jit_int32_t kind, jit_int32_t size)
2990 regno = jit_regno(node->u.w);
2991 right = jit_regno(node->v.w);
2992 value = _jitc->values + regno;
2993 if ((value->kind == jit_kind_register &&
2994 jit_regno(value->base.q.l) == right &&
2995 value->base.q.h == _jitc->gen[right]) ||
2996 (value->kind == kind && _jitc->values[right].kind == kind &&
2997 memcmp(&value->base.w, &_jitc->values[right].base.w, size) == 0)) {
2998 del_node(prev, node);
3001 if (_jitc->values[right].kind == jit_kind_word)
3002 jit_memcpy(value, _jitc->values + right, sizeof(jit_value_t));
3004 value->kind = jit_kind_register;
3005 value->base.q.l = right;
3006 value->base.q.h = _jitc->gen[right];
3008 ++_jitc->gen[regno];
3014 _simplify_movi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node,
3015 jit_int32_t kind, jit_int32_t size)
3022 regno = jit_regno(node->u.w);
3023 value = _jitc->values + regno;
3024 if (node->flag & jit_flag_node) {
3025 /* set to undefined if value will be patched */
3027 ++_jitc->gen[regno];
3030 if (value->kind == kind) {
3031 if (memcmp(&node->v.w, &value->base.w, size) == 0) {
3032 del_node(prev, node);
3035 spec = jit_class(_rvs[regno].spec);
3036 if (kind == jit_kind_word)
3037 spec &= jit_class_gpr;
3039 spec &= (jit_class_xpr | jit_class_fpr);
3040 for (offset = 0; offset < _jitc->reglen; offset++) {
3041 if (_jitc->values[offset].kind == kind &&
3042 memcmp(&node->v.w, &_jitc->values[offset].base.w, size) == 0 &&
3043 (jit_class(_rvs[offset].spec) & spec) == spec) {
3044 if (kind == jit_kind_word)
3045 node->code = jit_code_movr;
3046 else if (kind == jit_kind_float32)
3047 node->code = jit_code_movr_f;
3049 node->code = jit_code_movr_d;
3051 jit_memcpy(value, _jitc->values + offset, sizeof(jit_value_t));
3052 ++_jitc->gen[regno];
3058 jit_memcpy(&value->base.w, &node->v.w, size);
3059 ++_jitc->gen[regno];
3064 /* simple/safe redundandy test not checking if another register
3065 * holds the same value
3068 _simplify_ldxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3074 regno = jit_regno(node->u.w);
3075 right = jit_regno(node->v.w);
3076 value = _jitc->values + regno;
3077 if (regno != right &&
3078 value->kind == jit_kind_code && value->code == node->code &&
3079 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3080 node->w.w == value->disp.w) {
3081 del_node(prev, node);
3084 value->kind = jit_kind_code;
3085 value->code = node->code;
3086 value->base.q.l = right;
3087 value->base.q.h = _jitc->gen[right];
3088 value->disp.w = node->w.w;
3089 ++_jitc->gen[regno];
3095 _simplify_stxi(jit_state_t *_jit, jit_node_t *prev, jit_node_t *node)
3102 regno = jit_regno(node->w.w);
3103 right = jit_regno(node->v.w);
3104 value = _jitc->values + regno;
3106 /* check for redundant store after load */
3107 if (regno != right &&
3108 value->kind == jit_kind_code && value->code == node->code &&
3109 value->base.q.l == right && value->base.q.h == _jitc->gen[right] &&
3110 node->u.w == value->disp.w) {
3111 del_node(prev, node);
3115 /* assume anything can alias, and invalidate tracked values */
3116 for (offset = 0; offset < _jitc->reglen; offset++) {
3117 if (_jitc->values[offset].kind == jit_kind_code) {
3118 _jitc->values[offset].kind = 0;
3119 ++_jitc->gen[offset];
3123 /* no multiple information, so, if set to a constant,
3124 * prefer to keep that information */
3125 if (value->kind == 0) {
3126 value->kind = jit_kind_code;
3127 switch (node->code) {
3128 /* no information about signed/unsigned either */
3129 case jit_code_stxi_c: value->code = jit_code_ldxi_c; break;
3130 case jit_code_stxi_s: value->code = jit_code_ldxi_s; break;
3131 case jit_code_stxi_i: value->code = jit_code_ldxi_i; break;
3132 case jit_code_stxi_l: value->code = jit_code_ldxi_l; break;
3133 case jit_code_stxi_f: value->code = jit_code_ldxi_f; break;
3134 case jit_code_stxi_d: value->code = jit_code_ldxi_d; break;
3137 value->kind = jit_kind_code;
3138 value->base.q.l = right;
3139 value->base.q.h = _jitc->gen[right];
3140 value->disp.w = node->u.w;
3146 /* usually there should be only one store in the
3147 * jit_get_reg/jit_unget_reg, but properly handle
3148 * multiple ones by moving the save node */
3150 _simplify_spill(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3155 if ((temp = _jitc->spill[regno]) && (save = temp->next) != node) {
3156 temp->next = save->next;
3157 save->next = node->next;
3159 _jitc->spill[regno] = node;
3163 /* checks for simple cases where a register is set more than
3164 * once to the same value, and is a common pattern of calls
3165 * to jit_pushargi and jit_pushargr
3168 _simplify(jit_state_t *_jit)
3176 for (prev = NULL, node = _jitc->head; node; prev = node, node = next) {
3178 switch (node->code) {
3179 case jit_code_label: case jit_code_prolog:
3180 case jit_code_callr: case jit_code_calli:
3182 memset(_jitc->gen, 0, sizeof(jit_int32_t) * _jitc->reglen);
3183 memset(_jitc->values, 0, sizeof(jit_value_t) * _jitc->reglen);
3186 _jitc->spill[jit_regno(node->u.w)] = prev;
3189 regno = jit_regno(node->u.w);
3190 if (register_change_p(node->link->next, node, regno) !=
3192 /* spill not required due to optimizing common
3193 * redundancy case of calling jit_get_reg/jit_unget_reg
3194 * and then setting the register to the value it is
3195 * already holding */
3196 patch_register(node->link->next, node,
3197 jit_regno_patch|regno, regno);
3198 del_node(_jitc->spill[regno], node->link);
3199 del_node(prev, node);
3202 _jitc->spill[regno] = NULL;
3205 regno = jit_regno(node->u.w);
3206 if (simplify_movr(prev, node,
3207 jit_kind_word, sizeof(jit_word_t)))
3208 simplify_spill(node = prev, regno);
3211 regno = jit_regno(node->u.w);
3212 if (simplify_movi(prev, node,
3213 jit_kind_word, sizeof(jit_word_t)))
3214 simplify_spill(node = prev, regno);
3216 case jit_code_movr_f:
3217 regno = jit_regno(node->u.w);
3218 if (simplify_movr(prev, node,
3219 jit_kind_float32, sizeof(jit_float32_t)))
3220 simplify_spill(node = prev, regno);
3222 case jit_code_movi_f:
3223 regno = jit_regno(node->u.w);
3224 if (simplify_movi(prev, node,
3225 jit_kind_float32, sizeof(jit_float32_t)))
3226 simplify_spill(node = prev, regno);
3228 case jit_code_movr_d:
3229 regno = jit_regno(node->u.w);
3230 if (simplify_movr(prev, node,
3231 jit_kind_float64, sizeof(jit_float64_t)))
3232 simplify_spill(node = prev, regno);
3234 case jit_code_movi_d:
3235 regno = jit_regno(node->u.w);
3236 if (simplify_movi(prev, node,
3237 jit_kind_float64, sizeof(jit_float64_t)))
3238 simplify_spill(node = prev, regno);
3240 case jit_code_ldxi_c: case jit_code_ldxi_uc:
3241 case jit_code_ldxi_s: case jit_code_ldxi_us:
3242 case jit_code_ldxi_i: case jit_code_ldxi_ui:
3243 case jit_code_ldxi_l:
3244 case jit_code_ldxi_f: case jit_code_ldxi_d:
3245 regno = jit_regno(node->u.w);
3246 if (simplify_ldxi(prev, node))
3247 simplify_spill(node = prev, regno);
3249 case jit_code_stxi_c: case jit_code_stxi_s:
3250 case jit_code_stxi_i: case jit_code_stxi_l:
3251 case jit_code_stxi_f: case jit_code_stxi_d:
3252 regno = jit_regno(node->u.w);
3253 if (simplify_stxi(prev, node))
3254 simplify_spill(node = prev, regno);
3257 info = jit_classify(node->code);
3258 if (info & jit_cc_a0_jmp)
3259 /* labels are not implicitly added when not taking
3260 * a conditional branch */
3262 if (info & jit_cc_a0_chg) {
3263 if (info & jit_cc_a0_rlh) {
3264 regno = jit_regno(node->u.q.l);
3265 _jitc->values[regno].kind = 0;
3266 ++_jitc->gen[regno];
3267 regno = jit_regno(node->u.q.h);
3268 _jitc->values[regno].kind = 0;
3269 ++_jitc->gen[regno];
3272 regno = jit_regno(node->u.w);
3273 _jitc->values[regno].kind = 0;
3274 ++_jitc->gen[regno];
3277 if (info & jit_cc_a1_chg) {
3278 regno = jit_regno(node->v.w);
3279 _jitc->values[regno].kind = 0;
3280 ++_jitc->gen[regno];
3282 if (info & jit_cc_a2_chg) {
3283 regno = jit_regno(node->w.w);
3284 _jitc->values[regno].kind = 0;
3285 ++_jitc->gen[regno];
3293 _register_change_p(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3298 for (; node != link; node = node->next) {
3299 switch (node->code) {
3300 case jit_code_label: case jit_code_prolog:
3301 /* lack of extra information so cannot say it is undefined */
3302 return (jit_reg_change);
3303 case jit_code_callr: case jit_code_calli:
3304 if (!(jit_class(_rvs[regno].spec) & jit_class_sav))
3305 return (jit_reg_undef);
3308 value = jit_classify(node->code);
3309 /* lack of extra information */
3310 if (value & jit_cc_a0_jmp)
3311 return (jit_reg_change);
3312 else if ((value & (jit_cc_a0_reg|jit_cc_a0_chg)) ==
3313 (jit_cc_a0_reg|jit_cc_a0_chg) &&
3314 (((value & jit_cc_a0_rlh) &&
3315 (node->u.q.l == regno || node->u.q.h == regno)) ||
3316 (!(value & jit_cc_a0_rlh) &&
3317 node->u.w == regno)))
3318 return (jit_reg_change);
3319 else if ((value & jit_cc_a1_reg) && node->v.w == regno &&
3320 (value & jit_cc_a1_chg))
3321 return (jit_reg_change);
3322 else if ((value & jit_cc_a2_reg) && node->w.w == regno &&
3323 (value & jit_cc_a2_chg))
3324 return (jit_reg_change);
3328 return (jit_reg_static);
3331 /* most of this could be done at the same time as generating jit, but
3332 * avoid complications on different cpu backends and patch spill/loads
3333 * here, by simulating jit generation */
3335 _spill_reglive_p(jit_state_t *_jit, jit_node_t *node, jit_int32_t regno)
3337 if (!jit_regset_tstbit(&_jitc->reglive, regno)) {
3338 jit_regset_setbit(&_jitc->regmask, regno);
3339 jit_update(node->next, &_jitc->reglive, &_jitc->regmask);
3340 if (!jit_regset_tstbit(&_jitc->reglive, regno) &&
3341 register_change_p(node->next, node->link, regno) != jit_reg_change)
3349 _patch_registers(jit_state_t *_jit)
3359 _jitc->function = NULL;
3361 jit_reglive_setup();
3362 for (prev = NULL, node = _jitc->head; node; node = next) {
3365 info = jit_classify(node->code);
3366 jit_regarg_set(node, info);
3368 switch (node->code) {
3370 regno = jit_regno(node->u.w);
3371 if (!spill_reglive_p(node, regno)) {
3372 /* register is not live, just remove spill/reload */
3373 jit_regarg_clr(node, info);
3374 node->link->v.w = jit_regload_delete;
3375 del_node(prev, node);
3379 /* try to find a free register of the same class */
3380 spec = jit_class(_rvs[regno].spec) & ~jit_class_arg;
3381 for (value = 0; value < _jitc->reglen; value++) {
3382 if (value != regno &&
3383 ((jit_class(_rvs[value].spec) & spec) &
3384 ~jit_class_arg) == spec &&
3385 !jit_regset_tstbit(&_jitc->regarg, value) &&
3386 !spill_reglive_p(node, value))
3389 if (value < _jitc->reglen) {
3390 jit_regarg_clr(node, info);
3391 patch_register(node->next, node->link,
3392 jit_regno_patch|node->u.w,
3393 jit_regno_patch|value);
3394 /* mark as live just in case there are nested
3395 * register patches, so that next patch will
3396 * not want to use the same register */
3397 jit_regset_setbit(&_jitc->reglive, value);
3398 /* register is not live, just remove spill/reload */
3399 node->link->v.w = jit_regload_isdead;
3400 del_node(prev, node);
3404 /* failed to find a free register */
3405 if (spec & jit_class_gpr) {
3406 if (!_jitc->function->regoff[regno])
3407 _jitc->function->regoff[regno] =
3408 jit_allocai(sizeof(jit_word_t));
3409 #if __WORDSIZE == 32
3410 node->code = jit_code_stxi_i;
3412 node->code = jit_code_stxi_l;
3416 node->code = jit_code_stxi_d;
3417 if (!_jitc->function->regoff[regno])
3418 _jitc->function->regoff[regno] =
3419 jit_allocai(sizeof(jit_float64_t));
3421 node->u.w = _jitc->function->regoff[regno];
3429 regno = jit_regno(node->u.w);
3431 if (node->v.w == jit_regload_isdead)
3432 jit_regset_clrbit(&_jitc->reglive, regno);
3433 del_node(prev, node);
3436 spec = jit_class(_rvs[regno].spec);
3437 if (spec & jit_class_gpr) {
3438 #if __WORDSIZE == 32
3439 node->code = jit_code_ldxi_i;
3441 node->code = jit_code_ldxi_l;
3445 node->code = jit_code_ldxi_d;
3448 node->w.w = _jitc->function->regoff[regno];
3451 case jit_code_prolog:
3452 _jitc->function = _jitc->functions.ptr + node->w.w;
3454 case jit_code_epilog:
3455 _jitc->function = NULL;
3461 jit_regarg_clr(node, info);
3462 /* update register live state */
3469 _patch_register(jit_state_t *_jit, jit_node_t *node, jit_node_t *link,
3470 jit_int32_t regno, jit_int32_t patch)
3474 for (; node != link; node = node->next) {
3475 value = jit_classify(node->code);
3476 if (value & jit_cc_a0_reg) {
3477 if (value & jit_cc_a0_rlh) {
3478 if (node->u.q.l == regno)
3479 node->u.q.l = patch;
3480 if (node->u.q.h == regno)
3481 node->u.q.h = patch;
3484 if (node->u.w == regno)
3488 if ((value & jit_cc_a1_reg) && node->v.w == regno)
3490 if ((value & jit_cc_a2_reg) && node->w.w == regno)
3495 #if defined(__i386__) || defined(__x86_64__)
3496 # include "jit_x86.c"
3497 #elif defined(__mips__)
3498 # include "jit_mips.c"
3499 #elif defined(__arm__)
3500 # include "jit_arm.c"
3501 #elif defined(__powerpc__)
3502 # include "jit_ppc.c"
3503 #elif defined(__sparc__)
3504 # include "jit_sparc.c"
3505 #elif defined(__ia64__)
3506 # include "jit_ia64.c"
3507 #elif defined(__hppa__)
3508 # include "jit_hppa.c"
3509 #elif defined(__aarch64__)
3510 # include "jit_aarch64.c"
3511 #elif defined(__s390__) || defined(__s390x__)
3512 # include "jit_s390.c"
3513 #elif defined(__alpha__)
3514 # include "jit_alpha.c"
3515 #elif defined(__riscv)
3516 # include "jit_riscv.c"