/*
- * Project: libFIRM
- * File name: ir/ir/iredges.c
- * Purpose: Always available outs.
- * Author: Sebastian Hack
- * Modified by: Michael Beck, Andreas Schoesser
- * Created: 14.1.2005
- * CVS-ID: $Id$
- * Copyright: (c) 1998-2006 Universität Karlsruhe
- * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ * Copyright (C) 1995-2008 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.
*/
/**
- * Always available outs.
- * @author Sebastian Hack
- * @date 14.1.2005
+ * @file
+ * @brief Always available outs.
+ * @author Sebastian Hack, Michael Beck, Andreas Schoesser
+ * @date 14.1.2005
+ * @version $Id$
+ * @summary
+ * This are out-edges (also called def-use edges) that are dynamically
+ * updated as the graph changes.
*/
-
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
-
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-#ifdef HAVE_MALLOC_H
-#include <malloc.h>
-#endif
#include "irnode_t.h"
#include "iropt_t.h"
#include "irgwalk.h"
#include "irdump_t.h"
#include "irprintf.h"
-#include "irhooks.h"
#include "debug.h"
#include "set.h"
#include "bitset.h"
+#include "error.h"
+
+#include "iredgeset.h"
+#include "hashptr.h"
+
+#define DO_REHASH
+#define SCALAR_RETURN
+#define HashSet ir_edgeset_t
+#define HashSetIterator ir_edgeset_iterator_t
+#define ValueType ir_edge_t*
+#define NullValue NULL
+#define DeletedValue ((ir_edge_t*)-1)
+#define Hash(this,key) (HASH_PTR(key->src) ^ (key->pos * 40013))
+#define KeysEqual(this,key1,key2) ((key1->src) == (key2->src) && (key1->pos == key2->pos))
+#define SetRangeEmpty(ptr,size) memset(ptr, 0, (size) * sizeof((ptr)[0]))
+
+#define hashset_init ir_edgeset_init
+#define hashset_init_size ir_edgeset_init_size
+#define hashset_destroy ir_edgeset_destroy
+#define hashset_insert ir_edgeset_insert
+#define hashset_remove ir_edgeset_remove
+#define hashset_find ir_edgeset_find
+#define hashset_size ir_edgeset_size
+#define hashset_iterator_init ir_edgeset_iterator_init
+#define hashset_iterator_next ir_edgeset_iterator_next
+#define hashset_remove_iterator ir_edgeset_remove_iterator
+
+#include "hashset.c"
/**
-* A function that allows for setting an edge.
-* This abstraction is necessary since different edge kind have
-* different methods of setting edges.
-*/
+ * A function that allows for setting an edge.
+ * This abstraction is necessary since different edge kind have
+ * different methods of setting edges.
+ */
typedef void (set_edge_func_t)(ir_node *src, int pos, ir_node *tgt);
typedef int (get_edge_src_arity_func_t)(const ir_node *src);
-typedef int (get_edge_src_first_func_t)(const ir_node *src);
-
typedef ir_node *(get_edge_src_n_func_t)(const ir_node *src, int pos);
/**
-* Additional data for an edge kind.
-*/
+ * Additional data for an edge kind.
+ */
typedef struct {
- const char *name;
- set_edge_func_t *set_edge;
- get_edge_src_first_func_t *get_first;
- get_edge_src_arity_func_t *get_arity;
- get_edge_src_n_func_t *get_n;
+ const char *name; /**< name of this edge kind */
+ set_edge_func_t *set_edge; /**< the set_edge function */
+ int first_idx; /**< index of the first possible edge */
+ get_edge_src_arity_func_t *get_arity; /**< the get_arity function */
+ get_edge_src_n_func_t *get_n; /**< the get_n function */
} ir_edge_kind_info_t;
-static int get_zero(const ir_node *irn)
-{
- return 0;
-}
-
-static int get_irn_first(const ir_node *irn)
-{
- return 0 - !is_Block(irn);
-}
-
-static ir_node *get_block_n(const ir_node *irn, int pos)
-{
- return is_Block(irn) ? get_Block_cfgpred_block((ir_node *) irn, pos) : 0;
+/**
+ * Get the predecessor block.
+ */
+static ir_node *get_block_n(const ir_node *irn, int pos) {
+ if (is_Block(irn))
+ return get_Block_cfgpred_block(irn, pos);
+ /* might be a Bad */
+ return NULL;
}
static const ir_edge_kind_info_t edge_kind_info[EDGE_KIND_LAST] = {
- { "normal" , set_irn_n, get_irn_first, get_irn_arity, get_irn_n },
- { "block succs", NULL, get_zero, get_irn_arity, get_block_n },
- { "dependency", set_irn_dep, get_zero, get_irn_deps, get_irn_dep }
+ { "normal" , set_irn_n, -1, get_irn_arity, get_irn_n },
+ { "block succs", NULL, 0, get_irn_arity, get_block_n },
+ { "dependency", set_irn_dep, 0, get_irn_deps, get_irn_dep }
};
-#define foreach_tgt(irn, i, n, kind) for(i = edge_kind_info[kind].get_first(irn), n = edge_kind_info[kind].get_arity(irn); i < n; ++i)
+#define foreach_tgt(irn, i, n, kind) for(i = edge_kind_info[kind].first_idx, n = edge_kind_info[kind].get_arity(irn); i < n; ++i)
#define get_n(irn, pos, kind) (edge_kind_info[kind].get_n(irn, pos))
#define get_kind_str(kind) (edge_kind_info[kind].name)
*/
static int edges_dbg = 0;
+#ifdef DEBUG_libfirm
/* a static variable holding the last number assigned to a new edge */
static long last_edge_num = -1;
+#endif
-static INLINE long edge_get_id(const ir_edge_t *e) {
+static inline long edge_get_id(const ir_edge_t *e) {
#ifdef DEBUG_libfirm
return e->edge_nr;
#else /* DEBUG_libfirm */
/**
* Announce to reserve extra space for each edge to be allocated.
- * @Param n: Size of the space to reserve
- * @ Returns: Offset at which the private data will begin
+ *
+ * @param n: Size of the space to reserve
+ *
+ * @return Offset at which the private data will begin
+ *
* Several users can reserve extra space for private usage.
* Each user has to remember his given offset and the size of his private data.
* To be called before FIRM is initialized.
*/
-int edges_register_private_data(size_t n)
-{
+int edges_register_private_data(size_t n) {
int res = edges_private_size;
assert(!edges_used && "you cannot register private edge data, if edges have been initialized");
* The user has to remember his offset and the size of his data!
* Caution: Using wrong values here can destroy other users private data!
*/
+void edges_reset_private_data(ir_graph *irg, int offset, size_t size) {
+ irg_edge_info_t *info = _get_irg_edge_info(irg, EDGE_KIND_NORMAL);
+ ir_edge_t *edge;
+ ir_edgeset_iterator_t iter;
-void edges_reset_private_data(ir_graph *irg, int offset, size_t size)
-{
- irg_edge_info_t *info = _get_irg_edge_info(irg, EDGE_KIND_NORMAL);
- ir_edge_t *edge;
-
- foreach_set(info->edges, edge)
- {
+ foreach_ir_edgeset(&info->edges, edge, iter) {
memset(edge + sizeof(*edge) + offset, 0, size);
}
}
#define get_irn_out_list_head(irn) (&get_irn_out_info(irn)->outs)
-static int edge_cmp(const void *p1, const void *p2, size_t len)
-{
- const ir_edge_t *e1 = p1;
- const ir_edge_t *e2 = p2;
-
- if(e1->src != e2->src)
- return 1;
- if(e1->pos != e1->pos)
- return 1;
-
- return 0;
-}
-
#define edge_hash(edge) (TIMES37((edge)->pos) + HASH_PTR((edge)->src))
/**
* Initialize the out information for a graph.
* @note Dead node elimination can call this on an already initialized graph.
*/
-void edges_init_graph_kind(ir_graph *irg, ir_edge_kind_t kind)
-{
- if(edges_activated_kind(irg, kind)) {
+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);
- int amount = 2048;
+ size_t amount = irg->estimated_node_count * 2;
edges_used = 1;
- if(info->edges) {
- amount = set_count(info->edges);
- del_set(info->edges);
+ if(info->allocated) {
+ amount = ir_edgeset_size(&info->edges);
+ ir_edgeset_destroy(&info->edges);
+ obstack_free(&info->edges_obst, NULL);
}
- info->edges = new_set(edge_cmp, amount);
+ obstack_init(&info->edges_obst);
+ INIT_LIST_HEAD(&info->free_edges);
+ ir_edgeset_init_size(&info->edges, amount);
+ info->allocated = 1;
}
}
key.src = (ir_node *)src;
key.pos = pos;
- return set_find(info->edges, &key, EDGE_SIZE, edge_hash(&key));
+
+ return ir_edgeset_find(&info->edges, &key);
}
return NULL;
* Get the edge object of an outgoing edge at a node.
* Looks for an edge for all kinds.
*/
-
-const ir_edge_t *get_irn_edge(ir_graph *irg, const ir_node *src, int pos)
-{
+const ir_edge_t *get_irn_edge(ir_graph *irg, const ir_node *src, int pos) {
const ir_edge_t *edge;
if((edge = get_irn_edge_kind(irg, src, pos, EDGE_KIND_NORMAL)) == NULL)
edge = get_irn_edge_kind(irg, src, pos, EDGE_KIND_BLOCK);
/**
* Change the out count
+ *
+ * @param tgt the edge target
+ * @param kind the kind of the edge
*/
-static INLINE void edge_change_cnt(ir_node *tgt, ir_edge_kind_t kind, int ofs) {
+static inline void edge_change_cnt(ir_node *tgt, ir_edge_kind_t kind, int ofs) {
irn_edge_info_t *info = _get_irn_edge_info(tgt, kind);
info->out_count += ofs;
+
+#if 0
+ assert(info->out_count >= 0);
+ if (info->out_count == 0 && kind == EDGE_KIND_NORMAL) {
+ /* tgt lost it's last user */
+ int i;
+
+ for (i = get_irn_arity(tgt) - 1; i >= -1; --i) {
+ ir_node *prev = get_irn_n(tgt, i);
+
+ edges_notify_edge(tgt, i, NULL, prev, current_ir_graph);
+ }
+ for (i = get_irn_deps(tgt) - 1; i >= 0; --i) {
+ ir_node *prev = get_irn_dep(tgt, i);
+
+ edges_notify_edge_kind(tgt, i, NULL, prev, EDGE_KIND_DEP, current_ir_graph);
+
+ }
+ }
+#endif
}
/**
* Verify the edge list of a node, ie. ensure it's a loop:
* head -> e_1 -> ... -> e_n -> head
*/
-static INLINE void vrfy_list_head(ir_node *irn, ir_edge_kind_t kind) {
+static inline void vrfy_list_head(ir_node *irn, ir_edge_kind_t kind) {
int err = 0;
int num = 0;
pset *lh_set = pset_new_ptr(16);
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);
+ if (edge->src)
ir_fprintf(stderr, "- edge(%ld) %+F(%d)\n", edge_get_id(edge), edge->src, edge->pos);
err = 1;
break;
ir_node *old_tgt, ir_edge_kind_t kind,
ir_graph *irg)
{
- const char *msg = "";
+ const char *msg = "";
irg_edge_info_t *info;
- set *edges;
- ir_edge_t *templ;
- ir_edge_t *edge;
+ ir_edgeset_t *edges;
+ ir_edge_t templ;
+ ir_edge_t *edge;
assert(edges_activated_kind(irg, kind));
/*
* Only do something, if the old and new target differ.
*/
- if(tgt == old_tgt)
+ if (tgt == old_tgt)
return;
info = _get_irg_edge_info(irg, kind);
- edges = info->edges;
- templ = alloca(EDGE_SIZE);
+ edges = &info->edges;
/* Initialize the edge template to search in the set. */
- memset(templ, 0, EDGE_SIZE);
- templ->src = src;
- templ->pos = pos;
- templ->invalid = 0;
- templ->present = 0;
- templ->kind = kind;
- DEBUG_ONLY(templ->src_nr = get_irn_node_nr(src));
+ 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. */
- edge = set_find(edges, templ, EDGE_SIZE, edge_hash(templ));
+ 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->edge_nr = -1;
#endif /* DEBUG_libfirm */
edge_change_cnt(old_tgt, kind, -1);
- }
-
- /* If the edge was not found issue a warning on the debug stream */
- else {
+ } else {
+ /* If the edge was not found issue a warning on the debug stream */
msg = "edge to delete not found!\n";
}
- } /* if */
-
- /*
- * 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).
- */
- else {
+ } 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_outs_head(tgt, kind);
assert(head->next && head->prev &&
/* If the old target is not null, the edge is moved. */
if (old_tgt) {
- edge = set_find(edges, templ, EDGE_SIZE, edge_hash(templ));
+ edge = ir_edgeset_find(edges, &templ);
assert(edge && "edge to redirect not found!");
assert(! edge->invalid && "Invalid edge encountered");
list_move(&edge->list, head);
edge_change_cnt(old_tgt, kind, -1);
- }
-
- /* The old target was null, thus, the edge is newly created. */
- else {
- edge = set_insert(edges, templ, EDGE_SIZE, edge_hash(templ));
-
- assert(! edge->invalid && "Freshly inserted edge is invalid?!?");
- assert(edge->list.next == NULL && edge->list.prev == NULL &&
- "New edge must not have list head initialized");
+ } 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 = 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;
+ DEBUG_ONLY(edge->src_nr = get_irn_node_nr(src));
+
+ new_edge = ir_edgeset_insert(edges, edge);
+ if (new_edge != edge) {
+ panic("new edge exists already");
+ }
msg = "adding";
list_add(&edge->list, head);
-#ifdef DEBUG_libfirm
- edge->edge_nr = ++last_edge_num;
-#endif /* DEBUG_libfirm */
+ DEBUG_ONLY(edge->edge_nr = ++last_edge_num);
}
edge_change_cnt(tgt, kind, +1);
} /* else */
+#ifndef DEBUG_libfirm
/* verify list heads */
if (edges_dbg) {
if (tgt)
if (old_tgt)
vrfy_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, ir_graph *irg)
{
- if(edges_activated_kind(irg, EDGE_KIND_NORMAL)) {
+ if (edges_activated_kind(irg, EDGE_KIND_NORMAL)) {
edges_notify_edge_kind(src, pos, tgt, old_tgt, EDGE_KIND_NORMAL, irg);
}
if (edges_activated_kind(irg, EDGE_KIND_BLOCK) && is_Block(src)) {
- /* do not use get_nodes_block() here, it fails when running unpinned */
- ir_node *bl_old = old_tgt ? get_irn_n(skip_Proj(old_tgt), -1) : NULL;
- ir_node *bl_tgt = NULL;
+ if (pos == -1) {
+ /* a MacroBlock edge: ignore it here */
+ } else {
+ ir_node *bl_old = old_tgt ? get_nodes_block(skip_Proj(old_tgt)) : NULL;
+ ir_node *bl_tgt = NULL;
- if (tgt)
- bl_tgt = is_Bad(tgt) ? tgt : get_irn_n(skip_Proj(tgt), -1);
+ if (tgt)
+ bl_tgt = is_Bad(tgt) ? tgt : get_nodes_block(skip_Proj(tgt));
- edges_notify_edge_kind(src, pos, bl_tgt, bl_old, EDGE_KIND_BLOCK, irg);
+ edges_notify_edge_kind(src, pos, bl_tgt, bl_old, EDGE_KIND_BLOCK, irg);
+ }
}
}
-
-void edges_node_deleted_kind(ir_node *old, ir_edge_kind_t kind, ir_graph *irg)
+/**
+ * Delete all in edges of a given kind from the node old.
+ *
+ * @param old the node
+ * @param kind the kind of edges to remove
+ * @param irg the irg of the old node
+ */
+static void edges_node_deleted_kind(ir_node *old, ir_edge_kind_t kind, ir_graph *irg)
{
int i, n;
- if(!edges_activated_kind(irg, kind))
+ if (!edges_activated_kind(irg, kind))
return;
DBG((dbg, LEVEL_5, "node deleted (kind: %s): %+F\n", get_kind_str(kind), old));
* Post-Walker: notify all edges
*/
static void build_edges_walker(ir_node *irn, void *data) {
- struct build_walker *w = data;
- int i, n;
-
- if (! edges_activated_kind(w->irg, w->kind))
- return;
-
- foreach_tgt(irn, i, n, w->kind)
- edges_notify_edge_kind(irn, i, get_n(irn, i, w->kind), NULL, w->kind, w->irg);
+ struct build_walker *w = data;
+ int i, n;
+ ir_edge_kind_t kind = w->kind;
+ ir_graph *irg = w->irg;
+ get_edge_src_n_func_t *get_n;
+
+ get_n = edge_kind_info[kind].get_n;
+ foreach_tgt(irn, i, n, kind) {
+ ir_node *pred = get_n(irn, i, kind);
+ edges_notify_edge_kind(irn, i, pred, NULL, kind, irg);
+ }
}
/**
* of all nodes to 0.
*/
static void init_lh_walker(ir_node *irn, void *data) {
- struct build_walker *w = data;
- INIT_LIST_HEAD(_get_irn_outs_head(irn, w->kind));
- _get_irn_edge_info(irn, w->kind)->out_count = 0;
+ struct build_walker *w = data;
+ ir_edge_kind_t kind = w->kind;
+ list_head *head = _get_irn_outs_head(irn, kind);
+ INIT_LIST_HEAD(head);
+ _get_irn_edge_info(irn, kind)->out_count = 0;
}
+/**
+ * Pre-Walker: initializes the list-heads and set the out-count
+ * of all nodes to 0.
+ *
+ * Additionally touches DEP nodes, as they might be DEAD.
+ * THIS IS UGLY, but I don't find a better way until we
+ *
+ * a) ensure that dead nodes are not used as input
+ * b) it might be sufficient to add those stupid NO_REG nodes
+ * to the anchor
+ */
+static void init_lh_walker_dep(ir_node *irn, void *data) {
+ struct build_walker *w = data;
+ ir_edge_kind_t kind = w->kind;
+ list_head *head = _get_irn_outs_head(irn, kind);
+ int i;
+
+ INIT_LIST_HEAD(head);
+ _get_irn_edge_info(irn, kind)->out_count = 0;
+
+ for (i = get_irn_deps(irn) - 1; i >= 0; --i) {
+ ir_node *dep = get_irn_dep(irn, i);
+
+ head = _get_irn_outs_head(dep, kind);
+
+ INIT_LIST_HEAD(head);
+ _get_irn_edge_info(dep, kind)->out_count = 0;
+ }
+}
+
+typedef struct visitor_info_t {
+ irg_walk_func *visit;
+ void *data;
+} visitor_info_t;
+
/**
* Visitor: initializes the list-heads and set the out-count
* of all nodes to 0 of nodes that are not seen so far.
*/
static void visitor(ir_node *irn, void *data) {
- if (irn_not_visited(irn)) {
+ visitor_info_t *info = data;
+
+ if (!irn_visited(irn)) {
mark_irn_visited(irn);
- init_lh_walker(irn, data);
+ info->visit(irn, info->data);
}
}
void edges_activate_kind(ir_graph *irg, ir_edge_kind_t kind)
{
struct build_walker w;
- irg_edge_info_t *info = _get_irg_edge_info(irg, kind);
+ irg_edge_info_t *info = _get_irg_edge_info(irg, kind);
+ visitor_info_t visit;
w.irg = irg;
w.kind = kind;
+ visit.data = &w;
+
info->activated = 1;
edges_init_graph_kind(irg, kind);
- //irg_walk_graph(irg, init_lh_walker, build_edges_walker, &w);
- inc_irg_visited(irg);
- irg_walk_anchors(irg, init_lh_walker, build_edges_walker, &w);
- visit_all_identities(irg, visitor, &w);
+ if (kind == EDGE_KIND_DEP) {
+ irg_walk_anchors(irg, init_lh_walker_dep, NULL, &w);
+ /* Argh: Dep nodes might be dead, so we MUST visit identities first */
+ visit.visit = init_lh_walker_dep;
+ visit_all_identities(irg, visitor, &visit);
+ irg_walk_anchors(irg, NULL, build_edges_walker, &w);
+ } else {
+ irg_walk_anchors(irg, init_lh_walker, build_edges_walker, &w);
+ visit.visit = init_lh_walker;
+ visit_all_identities(irg, visitor, &visit);
+ }
}
void edges_deactivate_kind(ir_graph *irg, ir_edge_kind_t kind)
irg_edge_info_t *info = _get_irg_edge_info(irg, kind);
info->activated = 0;
- if (info->edges) {
- del_set(info->edges);
- info->edges = NULL;
+ if (info->allocated) {
+ obstack_free(&info->edges_obst, NULL);
+ ir_edgeset_destroy(&info->edges);
+ info->allocated = 0;
}
}
DBG((dbg, LEVEL_5, "reroute from %+F to %+F\n", from, to));
- while(head != head->next) {
+ while (head != head->next) {
ir_edge_t *edge = list_entry(head->next, ir_edge_t, list);
assert(edge->pos >= -1);
set_edge(edge->src, edge->pos, to);
static void verify_set_presence(ir_node *irn, void *data)
{
struct build_walker *w = data;
- set *edges = _get_irg_edge_info(w->irg, w->kind)->edges;
+ ir_edgeset_t *edges = &_get_irg_edge_info(w->irg, w->kind)->edges;
int i, n;
foreach_tgt(irn, i, n, w->kind) {
templ.src = irn;
templ.pos = i;
- e = set_find(edges, &templ, EDGE_SIZE, edge_hash(&templ));
+ e = ir_edgeset_find(edges, &templ);
if(e != NULL) {
e->present = 1;
} else {
w->problem_found = 1;
+#if 0
ir_fprintf(stderr, "Edge Verifier: edge %+F,%d -> %+F (kind: \"%s\") is missing\n",
irn, i, get_n(irn, i, w->kind), get_kind_str(w->kind));
+#endif
}
}
}
if (w->kind == EDGE_KIND_NORMAL && get_irn_arity(e->src) <= e->pos) {
w->problem_found = 1;
+#if 0
ir_fprintf(stderr, "Edge Verifier: edge(%ld) %+F -> %+F recorded at src position %d, but src has arity %d\n",
edge_get_id(e), e->src, irn, e->pos, get_irn_arity(e->src));
+#endif
continue;
}
if (irn != tgt) {
w->problem_found = 1;
+#if 0
ir_fprintf(stderr, "Edge Verifier: edge(%ld) %+F,%d (kind \"%s\") is no out edge of %+F but of %+F\n",
edge_get_id(e), e->src, e->pos, get_kind_str(w->kind), irn, tgt);
+#endif
}
}
}
int edges_verify_kind(ir_graph *irg, ir_edge_kind_t kind)
{
struct build_walker w;
- set *edges = _get_irg_edge_info(irg, kind)->edges;
+ ir_edgeset_t *edges = &_get_irg_edge_info(irg, kind)->edges;
ir_edge_t *e;
+ ir_edgeset_iterator_t iter;
w.irg = irg;
w.kind = kind;
w.problem_found = 0;
/* Clear the present bit in all edges available. */
- for (e = set_first(edges); e; e = set_next(edges))
+ foreach_ir_edgeset(edges, e, iter) {
e->present = 0;
+ }
irg_walk_graph(irg, verify_set_presence, verify_list_presence, &w);
* These edges are superfluous and their presence in the
* edge set is wrong.
*/
- for (e = set_first(edges); e; e = set_next(edges)) {
+ foreach_ir_edgeset(edges, e, iter) {
if (! e->invalid && ! 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);
static void count_user(ir_node *irn, void *env) {
int i;
int first;
+ (void) env;
- first = get_irn_first(irn);
+ first = -1;
for (i = get_irn_arity(irn) - 1; i >= first; --i) {
ir_node *op = get_irn_n(irn, i);
bitset_t *bs = get_irn_link(op);
* Verifies if collected count, number of edges in list and stored edge count are in sync.
*/
static void verify_edge_counter(ir_node *irn, void *env) {
- struct build_walker *w = env;
+ struct build_walker *w = env;
bitset_t *bs;
int list_cnt;
int ref_cnt;
int edge_cnt;
+ unsigned long idx;
const struct list_head *head;
const struct list_head *pos;
bs = get_irn_link(irn);
list_cnt = 0;
- ref_cnt = bitset_popcnt(bs);
+ ref_cnt = 0;
edge_cnt = _get_irn_edge_info(irn, EDGE_KIND_NORMAL)->out_count;
head = _get_irn_outs_head(irn, EDGE_KIND_NORMAL);
/* We can iterate safely here, list heads have already been verified. */
list_for_each(pos, head) {
- list_cnt++;
+ ++list_cnt;
+ }
+
+ /* check all nodes that reference us and count edges that point number
+ * of ins that actually point to us */
+ ref_cnt = 0;
+ bitset_foreach(bs, idx) {
+ int i, arity;
+ ir_node *src = get_idx_irn(w->irg, idx);
+
+ arity = get_irn_arity(src);
+ for (i = 0; i < arity; ++i) {
+ ir_node *in = get_irn_n(src, i);
+ if (in == irn)
+ ++ref_cnt;
+ }
}
if (edge_cnt != list_cnt) {
}
if (ref_cnt != list_cnt) {
- unsigned long idx;
-
w->problem_found = 1;
- ir_fprintf(stderr, "Edge Verifier: %+F reachable by %d node(s), but %d edge(s) recorded in list\n",
+ ir_fprintf(stderr, "Edge Verifier: %+F reachable by %d node(s), but the list contains %d edge(s)\n",
irn, ref_cnt, list_cnt);
+ /* Matze: buggy if a node has multiple ins pointing at irn */
+#if 0
list_for_each(pos, head) {
ir_edge_t *edge = list_entry(pos, ir_edge_t, list);
bitset_flip(bs, get_irn_idx(edge->src));
ir_fprintf(stderr, " %+F", src);
}
fprintf(stderr, "\n");
+#endif
}
bitset_free(bs);
struct build_walker w;
int problem_found = 0;
- if (! edges_dbg)
- return 0;
-
/* verify normal edges only */
problem_found = edges_verify_kind(irg, EDGE_KIND_NORMAL);
w.problem_found = 0;
/* verify counter */
- inc_irg_visited(irg);
irg_walk_anchors(irg, clear_links, count_user, &w);
- inc_irg_visited(irg);
irg_walk_anchors(irg, NULL, verify_edge_counter, &w);
return problem_found ? 1 : w.problem_found;
}
-void init_edges(void)
-{
+void init_edges(void) {
FIRM_DBG_REGISTER(dbg, DBG_EDGES);
/* firm_dbg_set_mask(dbg, -1); */
}
edges_dbg = do_dbg;
}
-void edges_activate(ir_graph *irg)
-{
+void edges_activate(ir_graph *irg) {
edges_activate_kind(irg, EDGE_KIND_NORMAL);
edges_activate_kind(irg, EDGE_KIND_BLOCK);
+ if (get_irg_phase_state(irg) == phase_backend)
+ edges_activate_kind(irg, EDGE_KIND_DEP);
}
-void edges_deactivate(ir_graph *irg)
-{
- edges_deactivate_kind(irg, EDGE_KIND_NORMAL);
+void edges_deactivate(ir_graph *irg) {
+ if (get_irg_phase_state(irg) == phase_backend)
+ edges_deactivate_kind(irg, EDGE_KIND_DEP);
edges_deactivate_kind(irg, EDGE_KIND_BLOCK);
+ edges_deactivate_kind(irg, EDGE_KIND_NORMAL);
}
-int edges_assure(ir_graph *irg)
-{
+int edges_assure(ir_graph *irg) {
int activated = edges_activated(irg);
- if(!activated)
+ if (!activated)
edges_activate(irg);
return activated;
}
-void edges_node_deleted(ir_node *irn, ir_graph *irg)
-{
+int edges_assure_kind(ir_graph *irg, ir_edge_kind_t kind) {
+ int activated = edges_activated_kind(irg, kind);
+
+ if (!activated)
+ edges_activate_kind(irg, kind);
+
+ return activated;
+}
+
+void edges_node_deleted(ir_node *irn, ir_graph *irg) {
edges_node_deleted_kind(irn, EDGE_KIND_NORMAL, irg);
edges_node_deleted_kind(irn, EDGE_KIND_BLOCK, irg);
}
-const ir_edge_t *(get_irn_out_edge_first_kind)(const ir_node *irn, ir_edge_kind_t kind)
-{
+const ir_edge_t *(get_irn_out_edge_first_kind)(const ir_node *irn, ir_edge_kind_t 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_next)(const ir_node *irn, const ir_edge_t *last) {
return _get_irn_out_edge_next(irn, last);
}
-ir_node *(get_edge_src_irn)(const ir_edge_t *edge)
-{
+ir_node *(get_edge_src_irn)(const ir_edge_t *edge) {
return _get_edge_src_irn(edge);
}
-int (get_edge_src_pos)(const ir_edge_t *edge)
-{
+int (get_edge_src_pos)(const ir_edge_t *edge) {
return _get_edge_src_pos(edge);
}
-int (get_irn_n_edges_kind)(const ir_node *irn, ir_edge_kind_t kind)
-{
+int (get_irn_n_edges_kind)(const ir_node *irn, ir_edge_kind_t kind) {
return _get_irn_n_edges_kind(irn, kind);
}
-void dump_all_out_edges(ir_node *irn)
-{
+void dump_all_out_edges(ir_node *irn) {
int i;
- for(i = 0; i < EDGE_KIND_LAST; ++i) {
+ for (i = 0; i < EDGE_KIND_LAST; ++i) {
const ir_edge_t *edge;
printf("kind \"%s\"\n", get_kind_str(i));
}
}
}
+
+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) {
+ /* find the corresponding successor block. */
+ ir_node *pred = get_edge_src_irn(edge);
+ irg_block_edges_walk2(pred, pre, post, env);
+ }
+
+ if (post)
+ post(bl, env);
+ }
+}
+
+void irg_block_edges_walk(ir_node *node,
+ irg_walk_func *pre, irg_walk_func *post,
+ void *env) {
+
+ assert(edges_activated(current_ir_graph));
+ assert(is_Block(node));
+
+ ir_reserve_resources(current_ir_graph, IR_RESOURCE_BLOCK_VISITED);
+
+ inc_irg_block_visited(current_ir_graph);
+ irg_block_edges_walk2(node, pre, post, env);
+
+ ir_free_resources(current_ir_graph, IR_RESOURCE_BLOCK_VISITED);
+}
projects / libfirm / blobdiff