/*
- * Project: libFIRM
- * File name: ir/ana/irouts.c
- * Purpose: Compute and access out edges.
- * Author: Goetz Lindenmaier
- * Modified by:
- * Created: 1.2002
- * CVS-ID: $Id$
- * Copyright: (c) 2002-2003 Universität Karlsruhe
- * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ * Copyright (C) 1995-2007 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.
*/
- /**
- * @file irouts.c Compute out edges for ir nodes (also called def-use edges).
- *
- * Copyright (C) 2002 by Universitaet Karlsruhe
- * All rights reserved.
- *
- * Authors: Goetz Lindenmaier
- */
-
+/**
+ * @file
+ * @brief Compute and access out edges (also called def-use edges).
+ * @author Goetz Lindenmaier, Michael Beck
+ * @date 1.2002
+ * @version $Id$
+ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/** Accessing the out datastructures **/
/*--------------------------------------------------------------------*/
-/** Clear the outs of a node */
-static void reset_outs (ir_node *node, void *unused)
-{
- node->out = NULL;
#ifdef DEBUG_libfirm
- node->out_valid = 0;
-#endif /* defined DEBUG_libfirm */
+/** Clear the outs of a node */
+static void reset_outs(ir_node *node, void *unused) {
+ (void) unused;
+ node->out = NULL;
+ node->out_valid = 0;
}
+#endif
/* returns the number of successors of the node: */
-int get_irn_n_outs (ir_node *node) {
- assert(node && node->kind == k_ir_node);
+int get_irn_n_outs(ir_node *node) {
+ assert(node && node->kind == k_ir_node);
#ifdef DEBUG_libfirm
- /* assert (node->out_valid); */
+ /* assert(node->out_valid); */
#endif /* defined DEBUG_libfirm */
- return PTR_TO_INT(node->out[0]);
+ return PTR_TO_INT(node->out[0]);
}
/* Access successor n */
-ir_node *get_irn_out (ir_node *node, int pos) {
- assert(pos >= 0 && pos < get_irn_n_outs(node));
+ir_node *get_irn_out(ir_node *node, int pos) {
+ assert(pos >= 0 && pos < get_irn_n_outs(node));
#ifdef DEBUG_libfirm
- /* assert (node->out_valid); */
+ /* assert(node->out_valid); */
#endif /* defined DEBUG_libfirm */
- return node->out[pos+1];
+return node->out[pos+1];
}
-void set_irn_out (ir_node *node, int pos, ir_node *out) {
- assert(node && out);
- assert(pos >= 0 && pos < get_irn_n_outs(node));
+void set_irn_out(ir_node *node, int pos, ir_node *out) {
+ assert(node && out);
+ assert(pos >= 0 && pos < get_irn_n_outs(node));
#ifdef DEBUG_libfirm
- node->out_valid = 1; /* assume that this function is used correctly */
+ node->out_valid = 1; /* assume that this function is used correctly */
#endif /* defined DEBUG_libfirm */
- node->out[pos+1] = out;
+ node->out[pos+1] = out;
}
/* Return the number of control flow successors, ignore keep-alives. */
int get_Block_n_cfg_outs(ir_node *bl) {
- int i, n_cfg_outs = 0;
- assert(bl && is_Block(bl));
+ int i, n_cfg_outs = 0;
+ assert(bl && is_Block(bl));
#ifdef DEBUG_libfirm
- assert (bl->out_valid);
+ assert(bl->out_valid);
#endif /* defined DEBUG_libfirm */
- for (i = 1; i <= PTR_TO_INT(bl->out[0]); i++)
- if ((get_irn_mode(bl->out[i]) == mode_X) &&
- (get_irn_op(bl->out[i]) != op_End))
- n_cfg_outs++;
- return n_cfg_outs;
+ for (i = 1; i <= PTR_TO_INT(bl->out[0]); ++i)
+ if ((get_irn_mode(bl->out[i]) == mode_X) &&
+ (get_irn_op(bl->out[i]) != op_End))
+ ++n_cfg_outs;
+ return n_cfg_outs;
}
/* Return the number of control flow successors, honor keep-alives. */
int get_Block_n_cfg_outs_ka(ir_node *bl) {
- int i, n_cfg_outs = 0;
- assert(bl && is_Block(bl));
+ int i, n_cfg_outs = 0;
+ assert(bl && is_Block(bl));
#ifdef DEBUG_libfirm
- assert (bl->out_valid);
+ assert(bl->out_valid);
#endif /* defined DEBUG_libfirm */
- for (i = 1; i <= PTR_TO_INT(bl->out[0]); i++)
- if (get_irn_mode(bl->out[i]) == mode_X) {
- /* ignore End if we are in the Endblock */
- if (get_irn_op(bl->out[i]) == op_End &&
- get_irn_n(bl->out[i], -1) == bl)
- continue;
- else
- n_cfg_outs++;
- }
- return n_cfg_outs;
+ for (i = 1; i <= PTR_TO_INT(bl->out[0]); ++i)
+ if (get_irn_mode(bl->out[i]) == mode_X) {
+ /* ignore End if we are in the Endblock */
+ if (get_irn_op(bl->out[i]) == op_End &&
+ get_irn_n(bl->out[i], -1) == bl)
+ continue;
+ else
+ ++n_cfg_outs;
+ }
+ return n_cfg_outs;
}
/* Access predecessor n, ignore keep-alives. */
ir_node *get_Block_cfg_out(ir_node *bl, int pos) {
- int i, out_pos = 0;
- assert(bl && is_Block(bl));
+ int i, out_pos = 0;
+ assert(bl && is_Block(bl));
#ifdef DEBUG_libfirm
- assert (bl->out_valid);
+ assert (bl->out_valid);
#endif /* defined DEBUG_libfirm */
- for (i = 1; i <= PTR_TO_INT(bl->out[0]); i++)
- if ((get_irn_mode(bl->out[i]) == mode_X) &&
- (get_irn_op(bl->out[i]) != op_End)) {
- if (out_pos == pos) {
- ir_node *cfop = bl->out[i];
- return cfop->out[1];
- } else
- out_pos++;
- }
- return NULL;
+ for (i = 1; i <= PTR_TO_INT(bl->out[0]); ++i)
+ if ((get_irn_mode(bl->out[i]) == mode_X) &&
+ (get_irn_op(bl->out[i]) != op_End)) {
+ if (out_pos == pos) {
+ ir_node *cfop = bl->out[i];
+ return cfop->out[1];
+ } else
+ ++out_pos;
+ }
+ return NULL;
}
/* Access predecessor n, honor keep-alives. */
ir_node *get_Block_cfg_out_ka(ir_node *bl, int pos) {
- int i, out_pos = 0;
- assert(bl && is_Block(bl));
+ int i, out_pos = 0;
+ assert(bl && is_Block(bl));
#ifdef DEBUG_libfirm
- assert (bl->out_valid);
+ assert (bl->out_valid);
#endif /* defined DEBUG_libfirm */
- for (i = 1; i <= PTR_TO_INT(bl->out[0]); i++)
- if (get_irn_mode(bl->out[i]) == mode_X) {
- /* ignore End if we are in the Endblock */
- if (get_irn_op(bl->out[i]) == op_End &&
- get_irn_n(bl->out[i], -1) == bl)
- continue;
- if (out_pos == pos) {
- ir_node *cfop = bl->out[i];
- /* handle keep-alive here */
- if (get_irn_op(cfop) == op_End)
- return get_irn_n(cfop, -1);
- return cfop->out[1];
- } else
- out_pos++;
- }
- return NULL;
+ for (i = 1; i <= PTR_TO_INT(bl->out[0]); ++i)
+ if (get_irn_mode(bl->out[i]) == mode_X) {
+ /* ignore End if we are in the Endblock */
+ if (get_irn_op(bl->out[i]) == op_End &&
+ get_irn_n(bl->out[i], -1) == bl)
+ continue;
+ if (out_pos == pos) {
+ ir_node *cfop = bl->out[i];
+ /* handle keep-alive here */
+ if (get_irn_op(cfop) == op_End)
+ return get_irn_n(cfop, -1);
+ return cfop->out[1];
+ } else
+ ++out_pos;
+ }
+ return NULL;
}
-static void irg_out_walk_2(ir_node *node, irg_walk_func *pre,
+static void irg_out_walk_2(ir_node *node, irg_walk_func *pre,
irg_walk_func *post, void *env) {
- int i, n;
- ir_node *succ;
+ int i, n;
+ ir_node *succ;
- assert(node);
- assert(get_irn_visited(node) < get_irg_visited(current_ir_graph));
+ assert(node);
+ assert(get_irn_visited(node) < get_irg_visited(current_ir_graph));
- set_irn_visited(node, get_irg_visited(current_ir_graph));
+ set_irn_visited(node, get_irg_visited(current_ir_graph));
- if (pre) pre(node, env);
+ if (pre) pre(node, env);
- for (i = 0, n = get_irn_n_outs(node); i < n; i++) {
- succ = get_irn_out(node, i);
- if (get_irn_visited(succ) < get_irg_visited(current_ir_graph))
- irg_out_walk_2(succ, pre, post, env);
- }
+ for (i = 0, n = get_irn_n_outs(node); i < n; ++i) {
+ succ = get_irn_out(node, i);
+ if (get_irn_visited(succ) < get_irg_visited(current_ir_graph))
+ irg_out_walk_2(succ, pre, post, env);
+ }
- if (post) post(node, env);
+ if (post) post(node, env);
- return;
+ return;
}
void irg_out_walk(ir_node *node,
- irg_walk_func *pre, irg_walk_func *post,
- void *env) {
- assert(node);
- if (get_irg_outs_state(current_ir_graph) != outs_none) {
- inc_irg_visited (current_ir_graph);
- irg_out_walk_2(node, pre, post, env);
- }
- return;
+ irg_walk_func *pre, irg_walk_func *post,
+ void *env) {
+ assert(node);
+ if (get_irg_outs_state(current_ir_graph) != outs_none) {
+ inc_irg_visited (current_ir_graph);
+ irg_out_walk_2(node, pre, post, env);
+ }
+ return;
}
static void irg_out_block_walk2(ir_node *bl,
- irg_walk_func *pre, irg_walk_func *post,
- void *env) {
- int i, n;
-
- if (Block_not_block_visited(bl)) {
- mark_Block_block_visited(bl);
-
- if (pre)
- pre(bl, env);
-
- for (i = 0, n = get_Block_n_cfg_outs(bl); i < n; i++) {
- /* find the corresponding predecessor block. */
- ir_node *pred = get_Block_cfg_out(bl, i);
- /* recursion */
- irg_out_block_walk2(pred, pre, post, env);
- }
-
- if (post)
- post(bl, env);
- }
+ irg_walk_func *pre, irg_walk_func *post,
+ void *env) {
+ int i, n;
+
+ if (Block_not_block_visited(bl)) {
+ mark_Block_block_visited(bl);
+
+ if (pre)
+ pre(bl, env);
+
+ for (i = 0, n = get_Block_n_cfg_outs(bl); i < n; ++i) {
+ /* find the corresponding predecessor block. */
+ ir_node *pred = get_Block_cfg_out(bl, i);
+ /* recursion */
+ irg_out_block_walk2(pred, pre, post, env);
+ }
+
+ if (post)
+ post(bl, env);
+ }
}
/* Walks only over Block nodes in the graph. Has it's own visited
flag, so that it can be interleaved with the other walker. */
void irg_out_block_walk(ir_node *node,
- irg_walk_func *pre, irg_walk_func *post,
- void *env) {
+ irg_walk_func *pre, irg_walk_func *post,
+ void *env) {
- assert(is_Block(node) || (get_irn_mode(node) == mode_X));
+ assert(is_Block(node) || (get_irn_mode(node) == mode_X));
- inc_irg_block_visited(current_ir_graph);
+ inc_irg_block_visited(current_ir_graph);
- if (get_irn_mode(node) == mode_X)
- node = node->out[1];
+ if (get_irn_mode(node) == mode_X)
+ node = node->out[1];
- irg_out_block_walk2(node, pre, post, env);
+ irg_out_block_walk2(node, pre, post, env);
}
/*--------------------------------------------------------------------*/
/** Returns the amount of out edges for not yet visited successors. */
static int _count_outs(ir_node *n) {
- int start, i, res, irn_arity;
+ int start, i, res, irn_arity;
- mark_irn_visited(n);
- n->out = (ir_node **) 1; /* Space for array size. */
+ mark_irn_visited(n);
+ n->out = (ir_node **) 1; /* Space for array size. */
- start = is_Block(n) ? 0 : -1;
- irn_arity = get_irn_arity(n);
- res = irn_arity - start + 1; /* --1 or --0; 1 for array size. */
+ start = is_Block(n) ? 0 : -1;
+ irn_arity = get_irn_arity(n);
+ res = irn_arity - start + 1; /* --1 or --0; 1 for array size. */
- for (i = start; i < irn_arity; ++i) {
- /* Optimize Tuples. They annoy if walking the cfg. */
- ir_node *pred = skip_Tuple(get_irn_n(n, i));
- set_irn_n(n, i, pred);
+ for (i = start; i < irn_arity; ++i) {
+ /* Optimize Tuples. They annoy if walking the cfg. */
+ ir_node *pred = skip_Tuple(get_irn_n(n, i));
+ set_irn_n(n, i, pred);
- /* count outs for successors */
- if (irn_not_visited(pred))
- res += _count_outs(pred);
+ /* count outs for successors */
+ if (irn_not_visited(pred))
+ res += _count_outs(pred);
- /* Count my outs */
- pred->out = (ir_node **)INT_TO_PTR(PTR_TO_INT(pred->out) + 1);
- }
- return res;
+ /* Count my outs */
+ pred->out = (ir_node **)INT_TO_PTR(PTR_TO_INT(pred->out) + 1);
+ }
+ return res;
}
* This version handles some special nodes like irg_frame, irg_args etc.
*/
static int count_outs(ir_graph *irg) {
- ir_node *n;
- int res;
-
- inc_irg_visited(irg);
- res = _count_outs(get_irg_end(irg));
-
- /* now handle special nodes */
- n = get_irg_frame(irg);
- if (irn_not_visited(n)) {
- n->out = (ir_node **)1;
- ++res;
- }
-
- n = get_irg_args(irg);
- if (irn_not_visited(n)) {
- n->out = (ir_node **)1;
- ++res;
- }
-
- return res;
+ ir_node *n;
+ int res;
+
+ inc_irg_visited(irg);
+ res = _count_outs(get_irg_end(irg));
+
+ /* now handle special nodes */
+ n = get_irg_frame(irg);
+ if (irn_not_visited(n)) {
+ n->out = (ir_node **)1;
+ ++res;
+ }
+
+ n = get_irg_args(irg);
+ if (irn_not_visited(n)) {
+ n->out = (ir_node **)1;
+ ++res;
+ }
+
+ return res;
}
/**
* @return The next free address
*/
static ir_node **_set_out_edges(ir_node *n, ir_node **free) {
- int n_outs, start, i, irn_arity;
- ir_node *pred;
+ int n_outs, start, i, irn_arity;
+ ir_node *pred;
- set_irn_visited(n, get_irg_visited(current_ir_graph));
+ set_irn_visited(n, get_irg_visited(current_ir_graph));
- /* Allocate my array */
- n_outs = PTR_TO_INT(n->out);
- n->out = free;
+ /* Allocate my array */
+ n_outs = PTR_TO_INT(n->out);
+ n->out = free;
#ifdef DEBUG_libfirm
- n->out_valid = 1;
+ n->out_valid = 1;
#endif /* defined DEBUG_libfirm */
- free += n_outs;
- /* We count the successors again, the space will be sufficient.
- We use this counter to remember the position for the next back
- edge. */
- n->out[0] = (ir_node *)0;
-
- start = is_Block(n) ? 0 : -1;
- irn_arity = get_irn_arity(n);
-
- for (i = start; i < irn_arity; i++) {
- pred = get_irn_n(n, i);
- /* Recursion */
- if (get_irn_visited(pred) < get_irg_visited(current_ir_graph))
- free = _set_out_edges(pred, free);
- /* Remember our back edge */
- pred->out[get_irn_n_outs(pred)+1] = n;
- pred->out[0] = INT_TO_PTR(get_irn_n_outs(pred) + 1);
- }
- return free;
+ free += n_outs;
+ /* We count the successors again, the space will be sufficient.
+ We use this counter to remember the position for the next back
+ edge. */
+ n->out[0] = (ir_node *)0;
+
+ start = is_Block(n) ? 0 : -1;
+ irn_arity = get_irn_arity(n);
+
+ for (i = start; i < irn_arity; ++i) {
+ pred = get_irn_n(n, i);
+ /* Recursion */
+ if (get_irn_visited(pred) < get_irg_visited(current_ir_graph))
+ free = _set_out_edges(pred, free);
+ /* Remember our back edge */
+ pred->out[get_irn_n_outs(pred)+1] = n;
+ pred->out[0] = INT_TO_PTR(get_irn_n_outs(pred) + 1);
+ }
+ return free;
}
/**
* @return The next free address
*/
static ir_node **set_out_edges(ir_graph *irg, ir_node **free) {
- ir_node *n, *special[2];
- int i, n_outs;
+ ir_node *n, *special[2];
+ int i, n_outs;
- inc_irg_visited(irg);
- free = _set_out_edges(get_irg_end(irg), free);
+ inc_irg_visited(irg);
+ free = _set_out_edges(get_irg_end(irg), free);
- /* handle special nodes */
- special[0] = get_irg_frame(irg);
- special[1] = get_irg_args(irg);
+ /* handle special nodes */
+ special[0] = get_irg_frame(irg);
+ special[1] = get_irg_args(irg);
- for (i = 1; i >= 0; --i) {
- n = special[i];
+ for (i = 1; i >= 0; --i) {
+ n = special[i];
- if (get_irn_visited(n) < get_irg_visited(current_ir_graph)) {
- n_outs = PTR_TO_INT(n->out);
- n->out = free;
+ if (get_irn_visited(n) < get_irg_visited(current_ir_graph)) {
+ n_outs = PTR_TO_INT(n->out);
+ n->out = free;
#ifdef DEBUG_libfirm
- n->out_valid = 1;
+ n->out_valid = 1;
#endif /* defined DEBUG_libfirm */
- free += n_outs;
- }
- }
+ free += n_outs;
+ }
+ }
- return free;
+ return free;
}
-/* We want that the out of ProjX from Start contains the next block at
- position 1, the Start block at position 2. This is necessary for
- the out block walker. */
+/**
+ * We want that the out of ProjX from Start contains the next block at
+ * position 1, the Start block at position 2. This is necessary for
+ * the out block walker.
+ */
static INLINE void fix_start_proj(ir_graph *irg) {
- ir_node *proj = NULL;
- ir_node *startbl = get_irg_start_block(irg);
- int i;
-
- if (get_Block_n_cfg_outs(startbl)) {
- for (i = get_irn_n_outs(startbl) - 1; i >= 0; --i)
- if (get_irn_mode(get_irn_out(startbl, i)) == mode_X) {
- proj = get_irn_out(startbl, i);
- break;
- }
-
- if (get_irn_out(proj, 0) == startbl) {
- assert(get_irn_n_outs(proj) == 2);
- set_irn_out(proj, 0, get_irn_out(proj, 1));
- set_irn_out(proj, 1, startbl);
- }
- }
+ ir_node *proj = NULL;
+ ir_node *startbl = get_irg_start_block(irg);
+ int i;
+
+ if (get_Block_n_cfg_outs(startbl)) {
+ for (i = get_irn_n_outs(startbl) - 1; i >= 0; --i)
+ if (get_irn_mode(get_irn_out(startbl, i)) == mode_X) {
+ proj = get_irn_out(startbl, i);
+ break;
+ }
+
+ if (get_irn_out(proj, 0) == startbl) {
+ assert(get_irn_n_outs(proj) == 2);
+ set_irn_out(proj, 0, get_irn_out(proj, 1));
+ set_irn_out(proj, 1, startbl);
+ }
+ }
}
/* compute the outs for a given graph */
void compute_irg_outs(ir_graph *irg) {
- ir_graph *rem = current_ir_graph;
- int n_out_edges = 0;
- ir_node **end = NULL; /* Only for debugging */
+ ir_graph *rem = current_ir_graph;
+ int n_out_edges = 0;
+ ir_node **end = NULL; /* Only for debugging */
- current_ir_graph = irg;
+ current_ir_graph = irg;
- /* Update graph state */
- assert(get_irg_phase_state(current_ir_graph) != phase_building);
+ /* Update graph state */
+ assert(get_irg_phase_state(current_ir_graph) != phase_building);
- if (current_ir_graph->outs_state != outs_none)
- free_irg_outs(current_ir_graph);
+ if (current_ir_graph->outs_state != outs_none)
+ free_irg_outs(current_ir_graph);
- /* This first iteration counts the overall number of out edges and the
- number of out edges for each node. */
- n_out_edges = count_outs(irg);
+ /* This first iteration counts the overall number of out edges and the
+ number of out edges for each node. */
+ n_out_edges = count_outs(irg);
- /* allocate memory for all out edges. */
- irg->outs = xcalloc(n_out_edges, sizeof(irg->outs[0]));
+ /* allocate memory for all out edges. */
+ irg->outs = xcalloc(n_out_edges, sizeof(irg->outs[0]));
#ifdef DEBUG_libfirm
- irg->n_outs = n_out_edges;
+ irg->n_outs = n_out_edges;
#endif /* defined DEBUG_libfirm */
- /* The second iteration splits the irg->outs array into smaller arrays
- for each node and writes the back edges into this array. */
- end = set_out_edges(irg, irg->outs);
+ /* The second iteration splits the irg->outs array into smaller arrays
+ for each node and writes the back edges into this array. */
+ end = set_out_edges(irg, irg->outs);
- /* Check how much memory we have used */
- assert (end == (irg->outs + n_out_edges));
+ /* Check how much memory we have used */
+ assert (end == (irg->outs + n_out_edges));
- /* We want that the out of ProjX from Start contains the next block at
- position 1, the Start block at position 2. This is necessary for
- the out block walker. */
- fix_start_proj(irg);
+ /* We want that the out of ProjX from Start contains the next block at
+ position 1, the Start block at position 2. This is necessary for
+ the out block walker. */
+ fix_start_proj(irg);
- current_ir_graph->outs_state = outs_consistent;
- current_ir_graph = rem;
+ current_ir_graph->outs_state = outs_consistent;
+ current_ir_graph = rem;
}
void assure_irg_outs(ir_graph *irg) {
- if (get_irg_outs_state(irg) != outs_consistent)
- compute_irg_outs(irg);
+ if (get_irg_outs_state(irg) != outs_consistent)
+ compute_irg_outs(irg);
}
void compute_irp_outs(void) {
- int i, n_irgs = get_irp_n_irgs();
- for (i = 0; i < n_irgs; ++i)
- compute_irg_outs(get_irp_irg(i));
+ int i;
+ for (i = get_irp_n_irgs() -1; i >= 0; --i)
+ compute_irg_outs(get_irp_irg(i));
}
+
void free_irp_outs(void) {
- int i, n_irgs = get_irp_n_irgs();
- for (i = 0; i < n_irgs; ++i)
- free_irg_outs(get_irp_irg(i));
+ int i;
+ for (i = get_irp_n_irgs() -1; i >= 0; --i)
+ free_irg_outs(get_irp_irg(i));
}
* before counting.
*/
static void init_count(ir_node * node, void *env) {
- node->out = (ir_node **) 1; /* 1 for the array size */
+ (void) env;
+ node->out = (ir_node **) 1; /* 1 for the array size */
}
* and adds the current arity to the overall count,
* which is saved in "env"
*/
-static void node_arity_count(ir_node * node, void * env)
-{
- int *anz = (int *) env, arity, n_outs, i, start;
- ir_node *succ;
+static void node_arity_count(ir_node * node, void * env) {
+ int *anz = (int *) env, arity, n_outs, i, start;
+ ir_node *succ;
- arity = get_irn_arity(node);
- start = (is_Block(node)) ? 0 : -1;
+ arity = get_irn_arity(node);
+ start = (is_Block(node)) ? 0 : -1;
- n_outs = 1 + arity + (-start); // ((is_Block(node)) ? 0 : 1); // Why + 1??
- *anz += n_outs;
+ n_outs = 1 + arity + (-start); // ((is_Block(node)) ? 0 : 1); // Why + 1??
+ *anz += n_outs;
- for(i = start; i < arity; i++) {
- succ = get_irn_n(node, i);
- succ->out = (ir_node **)INT_TO_PTR(PTR_TO_INT(succ->out) + 1);
- }
+ for(i = start; i < arity; i++) {
+ succ = get_irn_n(node, i);
+ succ->out = (ir_node **)INT_TO_PTR(PTR_TO_INT(succ->out) + 1);
+ }
}
* Returns the overall count of edges
*/
int count_ip_outs(void) {
+ int res = 0;
- int res = 0;
+ cg_walk(init_count, node_arity_count, &res);
- cg_walk(init_count, node_arity_count, &res);
-
- return(res);
+ return(res);
}
static int dummy_count = 0, global_count; /* Only for debugging */
* The current array start is transported in env
*/
static void set_array_pointer(ir_node *node, void *env) {
-
- int n_outs;
- ir_node ***free = (ir_node ***) env;
-
- /* Allocate my array */
- n_outs = PTR_TO_INT(node->out); /* We wrote the count here in count_ip_outs */
- dummy_count += n_outs;
- assert(dummy_count <= global_count && "More outedges than initially counted!");
- node -> out = *free;
- *free = &((*free)[n_outs]);
- /* We count the successors again, the space will be sufficient.
- We use this counter to remember the position for the next back
- edge. */
- node -> out[0] = (ir_node *) 0;
+ int n_outs;
+ ir_node ***free = (ir_node ***) env;
+
+ /* Allocate my array */
+ n_outs = PTR_TO_INT(node->out); /* We wrote the count here in count_ip_outs */
+ dummy_count += n_outs;
+ assert(dummy_count <= global_count && "More outedges than initially counted!");
+ node -> out = *free;
+ *free = &((*free)[n_outs]);
+ /* We count the successors again, the space will be sufficient.
+ We use this counter to remember the position for the next back
+ edge. */
+ node -> out[0] = (ir_node *) 0;
}
* Adds an outedge from the predecessor to the
* current node.
*/
-static void set_out_pointer(ir_node * node, void * env) {
- int i, arity = get_irn_arity(node);
- ir_node *succ;
- int start = (!is_Block(node)) ? -1 : 0;
-
- for (i = start; i < arity; i++) {
- succ = get_irn_n(node, i);
- succ->out[get_irn_n_outs(succ)+1] = node;
- succ->out[0] = INT_TO_PTR(get_irn_n_outs(succ) + 1);
- }
+static void set_out_pointer(ir_node * node, void *env) {
+ int i, arity = get_irn_arity(node);
+ ir_node *succ;
+ int start = (!is_Block(node)) ? -1 : 0;
+ (void) env;
+
+ for (i = start; i < arity; ++i) {
+ succ = get_irn_n(node, i);
+ succ->out[get_irn_n_outs(succ)+1] = node;
+ succ->out[0] = INT_TO_PTR(get_irn_n_outs(succ) + 1);
+ }
}
/*
* Sets the outedges for all nodes.
*/
-void set_ip_outs(void)
-{
- ir_node **outedge_array = get_irp_ip_outedges();
- cg_walk(set_array_pointer, set_out_pointer, (void *) &outedge_array);
+void set_ip_outs(void) {
+ ir_node **outedge_array = get_irp_ip_outedges();
+ cg_walk(set_array_pointer, set_out_pointer, (void *) &outedge_array);
}
* view!
*/
void compute_ip_outs(void) {
+ int n_out_edges;
+ ir_node **out_edges;
- int n_out_edges;
- ir_node **out_edges;
+ assert(get_irp_ip_view_state() == ip_view_valid &&
+ "Cannot construct outs for invalid ip view.");
- assert(get_irp_ip_view_state() == ip_view_valid &&
- "Cannot construct outs for invalid ip view.");
+ if (irp->outs_state != outs_none) {
+ free_ip_outs();
+ }
- if (irp->outs_state != outs_none) {
- free_ip_outs();
- }
-
- global_count = n_out_edges = count_ip_outs();
- out_edges = xcalloc(n_out_edges, sizeof(out_edges[0]));
- set_irp_ip_outedges(out_edges);
- set_ip_outs();
+ global_count = n_out_edges = count_ip_outs();
+ out_edges = xcalloc(n_out_edges, sizeof(out_edges[0]));
+ set_irp_ip_outedges(out_edges);
+ set_ip_outs();
}
-void free_ip_outs(void)
-{
- ir_node **out_edges = get_irp_ip_outedges();
- if (out_edges != NULL) {
- free(out_edges);
- set_irp_ip_outedges(NULL);
- }
- irp->outs_state = outs_none;
+void free_ip_outs(void) {
+ ir_node **out_edges = get_irp_ip_outedges();
+ if (out_edges != NULL) {
+ free(out_edges);
+ set_irp_ip_outedges(NULL);
+ }
+ irp->outs_state = outs_none;
}
void free_irg_outs(ir_graph *irg) {
+ /* current_ir_graph->outs_state = outs_none; */
+ irg->outs_state = outs_none;
- /* current_ir_graph->outs_state = outs_none; */
- irg->outs_state = outs_none;
-
- if (irg->outs) {
+ if (irg->outs) {
#ifdef DEBUG_libfirm
- memset(irg->outs, 0, irg->n_outs);
+ memset(irg->outs, 0, irg->n_outs);
#endif /* defined DEBUG_libfirm */
- free(irg->outs);
- irg->outs = NULL;
+ free(irg->outs);
+ irg->outs = NULL;
#ifdef DEBUG_libfirm
- irg->n_outs = 0;
+ irg->n_outs = 0;
#endif /* defined DEBUG_libfirm */
- }
+ }
#ifdef DEBUG_libfirm
- /* when debugging, *always* reset all nodes' outs! irg->outs might
- have been lying to us */
- irg_walk_graph (irg, reset_outs, NULL, NULL);
+ /* when debugging, *always* reset all nodes' outs! irg->outs might
+ have been lying to us */
+ irg_walk_graph (irg, reset_outs, NULL, NULL);
#endif /* defined DEBUG_libfirm */
}