X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fir%2Firedges.c;h=d110fbd92ea25f134aa591f77c69feff879a72e8;hb=e5c8ad12dba958fd212704917d7a433e6716462b;hp=65d936d02dd646e1e3ce5e2295e0fd9dfd471b5a;hpb=2c7e601484413ad272d685f9f0cb3ecc27b251f7;p=libfirm diff --git a/ir/ir/iredges.c b/ir/ir/iredges.c index 65d936d02..d110fbd92 100644 --- a/ir/ir/iredges.c +++ b/ir/ir/iredges.c @@ -1,20 +1,6 @@ /* - * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved. - * * This file is part of libFirm. - * - * This file may be distributed and/or modified under the terms of the - * GNU General Public License version 2 as published by the Free Software - * Foundation and appearing in the file LICENSE.GPL included in the - * packaging of this file. - * - * Licensees holding valid libFirm Professional Edition licenses may use - * this file in accordance with the libFirm Commercial License. - * Agreement provided with the Software. - * - * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE - * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE. + * Copyright (C) 2012 University of Karlsruhe. */ /** @@ -69,7 +55,7 @@ size_t ir_edgeset_size(const ir_edgeset_t *self); #define hashset_iterator_next ir_edgeset_iterator_next #define hashset_remove_iterator ir_edgeset_remove_iterator -#include "hashset.c" +#include "hashset.c.inl" /** * A function that allows for setting an edge. @@ -136,13 +122,6 @@ DEBUG_ONLY(static firm_dbg_module_t *dbg;) */ static int edges_used = 0; -/** - * Summed size of all users private data - */ - -static size_t edges_private_size = 0; -#define EDGE_SIZE (sizeof(ir_edge_t) + edges_private_size) - /** * If set to 1, the list heads are checked every time an edge is changed. */ @@ -156,38 +135,11 @@ static inline long edge_get_id(const ir_edge_t *e) return (long)e; } -size_t edges_register_private_data(size_t n) -{ - size_t res = edges_private_size; - - assert(!edges_used && "you cannot register private edge data, if edges have been initialized"); - - edges_private_size += n; - return res; -} - -void edges_reset_private_data(ir_graph *irg, int offset, unsigned size) -{ - irg_edge_info_t *info = get_irg_edge_info(irg, EDGE_KIND_NORMAL); - ir_edge_t *edge; - ir_edgeset_iterator_t iter; - - foreach_ir_edgeset(&info->edges, edge, iter) { - memset(edge + sizeof(*edge) + offset, 0, size); - } -} - -#define TIMES37(x) (((x) << 5) + ((x) << 2) + (x)) - -#define get_irn_out_list_head(irn) (&get_irn_out_info(irn)->outs) - -#define edge_hash(edge) (TIMES37((edge)->pos) + hash_ptr((edge)->src)) - void edges_init_graph_kind(ir_graph *irg, ir_edge_kind_t kind) { if (edges_activated_kind(irg, kind)) { irg_edge_info_t *info = get_irg_edge_info(irg, kind); - size_t amount = irg->estimated_node_count * 2; + size_t amount = get_irg_last_idx(irg) * 5 / 4; edges_used = 1; if (info->allocated) { @@ -202,22 +154,6 @@ void edges_init_graph_kind(ir_graph *irg, ir_edge_kind_t kind) } } -const ir_edge_t *get_irn_edge_kind(const ir_node *src, int pos, ir_edge_kind_t kind) -{ - ir_graph *irg = get_irn_irg(src); - if (edges_activated_kind(irg, kind)) { - irg_edge_info_t *info = get_irg_edge_info(irg, kind); - ir_edge_t key; - - key.src = (ir_node *)src; - key.pos = pos; - - return ir_edgeset_find(&info->edges, &key); - } - - return NULL; -} - /** * Change the out count * @@ -231,7 +167,7 @@ static inline void edge_change_cnt(ir_node *tgt, ir_edge_kind_t kind, int ofs) } /** - * Verify the edge list of a node, ie. ensure it's a loop: + * Verify the edge list of a node, i.e. ensure it's a loop: * head -> e_1 -> ... -> e_n -> head */ static inline void verify_list_head(ir_node *irn, ir_edge_kind_t kind) @@ -248,8 +184,6 @@ static inline void verify_list_head(ir_node *irn, ir_edge_kind_t kind) ir_fprintf(stderr, "EDGE Verifier: edge list broken (self loop not to head) for %+F:\n", irn); fprintf(stderr, "- at list entry %d\n", num); - if (edge->invalid) - fprintf(stderr, "- edge(%ld) is invalid\n", edge_get_id(edge)); if (edge->src) ir_fprintf(stderr, "- edge(%ld) %+F(%d)\n", edge_get_id(edge), edge->src, edge->pos); err = 1; @@ -277,109 +211,115 @@ void edges_dump_kind(ir_graph *irg, ir_edge_kind_t kind) info = get_irg_edge_info(irg, kind); edges = &info->edges; foreach_ir_edgeset(edges, e, iter) { - ir_printf("%+F %d %d\n", e->src, e->pos, e->invalid); + ir_printf("%+F %d\n", e->src, e->pos); + } +} + +static void add_edge(ir_node *src, int pos, ir_node *tgt, ir_edge_kind_t kind, + ir_graph *irg) +{ + assert(edges_activated_kind(irg, kind)); + irg_edge_info_t *info = get_irg_edge_info(irg, kind); + ir_edgeset_t *edges = &info->edges; + + struct list_head *head = &get_irn_edge_info(tgt, kind)->outs_head; + assert(head->next && head->prev && + "target list head must have been initialized"); + + /* The old target was NULL, thus, the edge is newly created. */ + ir_edge_t *edge; + if (list_empty(&info->free_edges)) { + edge = OALLOC(&info->edges_obst, ir_edge_t); + } else { + edge = list_entry(info->free_edges.next, ir_edge_t, list); + list_del(&edge->list); } + + edge->src = src; + edge->pos = pos; +#ifdef DEBUG_libfirm + edge->present = 0; +#endif + + ir_edge_t *new_edge = ir_edgeset_insert(edges, edge); + assert(new_edge == edge); + (void)new_edge; + + list_add(&edge->list, head); + + edge_change_cnt(tgt, kind, +1); +} + +static void delete_edge(ir_node *src, int pos, ir_node *old_tgt, + ir_edge_kind_t kind, ir_graph *irg) +{ + assert(edges_activated_kind(irg, kind)); + + irg_edge_info_t *info = get_irg_edge_info(irg, kind); + ir_edgeset_t *edges = &info->edges; + + /* Initialize the edge template to search in the set. */ + ir_edge_t templ; + templ.src = src; + templ.pos = pos; + + /* search the edge in the set. */ + ir_edge_t *edge = ir_edgeset_find(edges, &templ); + + /* mark the edge invalid if it was found */ + if (edge == NULL) + return; + + list_del(&edge->list); + ir_edgeset_remove(edges, edge); + list_add(&edge->list, &info->free_edges); + edge->pos = -2; + edge->src = NULL; + edge_change_cnt(old_tgt, kind, -1); } void edges_notify_edge_kind(ir_node *src, int pos, ir_node *tgt, ir_node *old_tgt, ir_edge_kind_t kind, ir_graph *irg) { - const char *msg = ""; - irg_edge_info_t *info; - ir_edgeset_t *edges; - ir_edge_t templ; + if (old_tgt == NULL) { + add_edge(src, pos, tgt, kind, irg); + return; + } else if (tgt == NULL) { + delete_edge(src, pos, old_tgt, kind, irg); + return; + } + + /* Only do something, if the old and new target differ. */ + if (tgt == old_tgt) + return; assert(edges_activated_kind(irg, kind)); + irg_edge_info_t *info = get_irg_edge_info(irg, kind); + ir_edgeset_t *edges = &info->edges; /* - * Only do something, if the old and new target differ. + * The target is not NULL and the old target differs + * from the new target, the edge shall be moved (if the + * old target was != NULL) or added (if the old target was + * NULL). */ - if (tgt == old_tgt) - return; + struct list_head *head = &get_irn_edge_info(tgt, kind)->outs_head; - info = get_irg_edge_info(irg, kind); - edges = &info->edges; + assert(head->next && head->prev && + "target list head must have been initialized"); /* Initialize the edge template to search in the set. */ + ir_edge_t templ; templ.src = src; templ.pos = pos; - /* - * If the target is NULL, the edge shall be deleted. - */ - if (tgt == NULL) { - /* search the edge in the set. */ - ir_edge_t *edge = ir_edgeset_find(edges, &templ); - - /* mark the edge invalid if it was found */ - if (edge) { - msg = "deleting"; - list_del(&edge->list); - ir_edgeset_remove(edges, edge); - list_add(&edge->list, &info->free_edges); - edge->invalid = 1; - edge->pos = -2; - edge->src = NULL; - edge_change_cnt(old_tgt, kind, -1); - } else { - /* If the edge was not found issue a warning on the debug stream */ - msg = "edge to delete not found!\n"; - } - } else { - /* - * The target is not NULL and the old target differs - * from the new target, the edge shall be moved (if the - * old target was != NULL) or added (if the old target was - * NULL). - */ - struct list_head *head = &get_irn_edge_info(tgt, kind)->outs_head; - - assert(head->next && head->prev && - "target list head must have been initialized"); - - /* If the old target is not null, the edge is moved. */ - if (old_tgt) { - ir_edge_t *edge = ir_edgeset_find(edges, &templ); - assert(edge && "edge to redirect not found!"); - assert(! edge->invalid && "Invalid edge encountered"); - - msg = "redirecting"; - - list_move(&edge->list, head); - edge_change_cnt(old_tgt, kind, -1); - } else { - /* The old target was NULL, thus, the edge is newly created. */ - ir_edge_t *new_edge; - ir_edge_t *edge; - - if (list_empty(&info->free_edges)) { - edge = (ir_edge_t*)obstack_alloc(&info->edges_obst, EDGE_SIZE); - } else { - edge = list_entry(info->free_edges.next, ir_edge_t, list); - list_del(&edge->list); - } - - edge->src = src; - edge->pos = pos; - edge->invalid = 0; - edge->present = 0; - edge->kind = kind; - edge->list.next = NULL; - edge->list.prev = NULL; - memset(edge + 1, 0, edges_private_size); - - new_edge = ir_edgeset_insert(edges, edge); - if (new_edge != edge) { - panic("new edge exists already"); - } - - msg = "adding"; - list_add(&edge->list, head); - } + ir_edge_t *edge = ir_edgeset_find(edges, &templ); + assert(edge && "edge to redirect not found!"); - edge_change_cnt(tgt, kind, +1); - } + list_move(&edge->list, head); + edge_change_cnt(old_tgt, kind, -1); + edge_change_cnt(tgt, kind, +1); #ifndef DEBUG_libfirm /* verify list heads */ @@ -390,8 +330,6 @@ void edges_notify_edge_kind(ir_node *src, int pos, ir_node *tgt, verify_list_head(old_tgt, kind); } #endif - - DBG((dbg, LEVEL_5, "announce out edge: %+F %d-> %+F(%+F): %s\n", src, pos, tgt, old_tgt, msg)); } void edges_notify_edge(ir_node *src, int pos, ir_node *tgt, ir_node *old_tgt, @@ -412,9 +350,7 @@ void edges_notify_edge(ir_node *src, int pos, ir_node *tgt, ir_node *old_tgt, edges_notify_edge_kind(src, pos, bl_tgt, bl_old, EDGE_KIND_BLOCK, irg); } else if (get_irn_mode(src) == mode_X && old_tgt != NULL && is_Block(old_tgt)) { /* moving a jump node from one block to another */ - const ir_edge_t *edge; - const ir_edge_t *next; - foreach_out_edge_kind_safe(old_tgt, edge, next, EDGE_KIND_BLOCK) { + foreach_out_edge_kind_safe(old_tgt, edge, EDGE_KIND_BLOCK) { ir_node *succ = get_edge_src_irn(edge); int succ_pos = get_edge_src_pos(edge); ir_node *block_pred = get_Block_cfgpred(succ, succ_pos); @@ -446,7 +382,7 @@ static void edges_node_deleted_kind(ir_node *old, ir_edge_kind_t kind) foreach_tgt(old, i, n, kind) { ir_node *old_tgt = get_n(old, i, kind); - edges_notify_edge_kind(old, i, NULL, old_tgt, kind, irg); + delete_edge(old, i, old_tgt, kind, irg); } } @@ -474,7 +410,7 @@ static void edges_node_revival_kind(ir_node *irn, ir_edge_kind_t kind) foreach_tgt(irn, i, n, kind) { ir_node *tgt = get_n(irn, i, kind); - edges_notify_edge_kind(irn, i, tgt, NULL, kind, irg); + add_edge(irn, i, tgt, kind, irg); } info->edges_built = 1; } @@ -497,7 +433,8 @@ static void build_edges_walker(ir_node *irn, void *data) foreach_tgt(irn, i, n, kind) { ir_node *pred = get_n(irn, i, kind); - edges_notify_edge_kind(irn, i, pred, NULL, kind, irg); + if (pred != NULL) + add_edge(irn, i, pred, kind, irg); } get_irn_edge_info(irn, kind)->edges_built = 1; } @@ -639,6 +576,11 @@ int (edges_activated_kind)(const ir_graph *irg, ir_edge_kind_t kind) return edges_activated_kind_(irg, kind); } +int (edges_activated)(const ir_graph *irg) +{ + return edges_activated_(irg); +} + void edges_reroute_kind(ir_node *from, ir_node *to, ir_edge_kind_t kind) { ir_graph *irg = get_irn_irg(from); @@ -657,11 +599,14 @@ void edges_reroute_kind(ir_node *from, ir_node *to, ir_edge_kind_t kind) } } +void edges_reroute(ir_node *from, ir_node *to) +{ + edges_reroute_kind(from, to, EDGE_KIND_NORMAL); +} + void edges_reroute_except(ir_node *from, ir_node *to, ir_node *exception) { - const ir_edge_t *edge; - const ir_edge_t *next; - foreach_out_edge_safe(from, edge, next) { + foreach_out_edge_safe(from, edge) { ir_node *src = get_edge_src_irn(edge); if (src == exception) continue; @@ -669,6 +614,7 @@ void edges_reroute_except(ir_node *from, ir_node *to, ir_node *exception) } } +#ifdef DEBUG_libfirm static void verify_set_presence(ir_node *irn, void *data) { build_walker *w = (build_walker*)data; @@ -693,8 +639,7 @@ static void verify_set_presence(ir_node *irn, void *data) static void verify_list_presence(ir_node *irn, void *data) { - build_walker *w = (build_walker*)data; - const ir_edge_t *e; + build_walker *w = (build_walker*)data; bitset_set(w->reachable, get_irn_idx(irn)); @@ -716,9 +661,11 @@ static void verify_list_presence(ir_node *irn, void *data) } } } +#endif int edges_verify_kind(ir_graph *irg, ir_edge_kind_t kind) { +#ifdef DEBUG_libfirm struct build_walker w; ir_edgeset_t *edges = &get_irg_edge_info(irg, kind)->edges; ir_edge_t *e; @@ -741,13 +688,18 @@ int edges_verify_kind(ir_graph *irg, ir_edge_kind_t kind) * edge set is wrong. */ foreach_ir_edgeset(edges, e, iter) { - if (! e->invalid && ! e->present && bitset_is_set(w.reachable, get_irn_idx(e->src))) { + if (! e->present && bitset_is_set(w.reachable, get_irn_idx(e->src))) { w.problem_found = 1; ir_fprintf(stderr, "Edge Verifier: edge(%ld) %+F,%d is superfluous\n", edge_get_id(e), e->src, e->pos); } } return w.problem_found; +#else + (void)irg; + (void)kind; + return 0; +#endif } #define IGNORE_NODE(irn) (is_Bad((irn)) || is_Block((irn))) @@ -795,34 +747,26 @@ static void count_user(ir_node *irn, void *env) */ static void verify_edge_counter(ir_node *irn, void *env) { - build_walker *w = (build_walker*)env; - bitset_t *bs; - int list_cnt; - int ref_cnt; - int edge_cnt; - size_t idx; - const struct list_head *head; - const struct list_head *pos; - ir_graph *irg; - + build_walker *w = (build_walker*)env; if (IGNORE_NODE(irn)) return; - bs = (bitset_t*)get_irn_link(irn); - list_cnt = 0; - ref_cnt = 0; - edge_cnt = get_irn_edge_info(irn, EDGE_KIND_NORMAL)->out_count; - head = &get_irn_edge_info(irn, EDGE_KIND_NORMAL)->outs_head; + bitset_t *bs = (bitset_t*)get_irn_link(irn); + int list_cnt = 0; + int edge_cnt = get_irn_edge_info(irn, EDGE_KIND_NORMAL)->out_count; + const struct list_head *head + = &get_irn_edge_info(irn, EDGE_KIND_NORMAL)->outs_head; /* We can iterate safely here, list heads have already been verified. */ + const struct list_head *pos; list_for_each(pos, head) { ++list_cnt; } /* check all nodes that reference us and count edges that point number * of ins that actually point to us */ - irg = get_irn_irg(irn); - ref_cnt = 0; + ir_graph *irg = get_irn_irg(irn); + int ref_cnt = 0; bitset_foreach(bs, idx) { int i, arity; ir_node *src = get_idx_irn(irg, idx); @@ -902,7 +846,7 @@ ir_graph_pass_t *irg_verify_edges_pass(const char *name, unsigned assert_on_prob void init_edges(void) { - FIRM_DBG_REGISTER(dbg, DBG_EDGES); + FIRM_DBG_REGISTER(dbg, "firm.ir.edges"); } void edges_init_dbg(int do_dbg) @@ -956,9 +900,19 @@ const ir_edge_t *(get_irn_out_edge_first_kind)(const ir_node *irn, ir_edge_kind_ return get_irn_out_edge_first_kind_(irn, kind); } -const ir_edge_t *(get_irn_out_edge_next)(const ir_node *irn, const ir_edge_t *last) +const ir_edge_t *(get_irn_out_edge_first)(const ir_node *irn) { - return get_irn_out_edge_next_(irn, last); + return get_irn_out_edge_first_kind_(irn, EDGE_KIND_NORMAL); +} + +const ir_edge_t *(get_block_succ_first)(const ir_node *block) +{ + return get_irn_out_edge_first_kind_(block, EDGE_KIND_BLOCK); +} + +const ir_edge_t *(get_irn_out_edge_next)(const ir_node *irn, const ir_edge_t *last, ir_edge_kind_t kind) +{ + return get_irn_out_edge_next_(irn, last, kind); } ir_node *(get_edge_src_irn)(const ir_edge_t *edge) @@ -979,15 +933,13 @@ int (get_irn_n_edges_kind)(const ir_node *irn, ir_edge_kind_t kind) static void irg_walk_edges2(ir_node *node, irg_walk_func *pre, irg_walk_func *post, void *env) { - const ir_edge_t *edge, *next; - if (irn_visited_else_mark(node)) return; if (pre != NULL) pre(node, env); - foreach_out_edge_kind_safe(node, edge, next, EDGE_KIND_NORMAL) { + foreach_out_edge_kind_safe(node, edge, EDGE_KIND_NORMAL) { /* find the corresponding successor block. */ ir_node *pred = get_edge_src_irn(edge); irg_walk_edges2(pred, pre, post, env); @@ -1016,15 +968,13 @@ void irg_walk_edges(ir_node *node, irg_walk_func *pre, irg_walk_func *post, static void irg_block_edges_walk2(ir_node *bl, irg_walk_func *pre, irg_walk_func *post, void *env) { - const ir_edge_t *edge, *next; - if (!Block_block_visited(bl)) { mark_Block_block_visited(bl); if (pre) pre(bl, env); - foreach_out_edge_kind_safe(bl, edge, next, EDGE_KIND_BLOCK) { + foreach_out_edge_kind_safe(bl, edge, EDGE_KIND_BLOCK) { /* find the corresponding successor block. */ ir_node *pred = get_edge_src_irn(edge); irg_block_edges_walk2(pred, pre, post, env);