/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
+#endif /* defined HAVE_CONFIG_H */
#include "irouts.h"
#include "irnode_t.h"
-#include "irgraph_t.h" /* To access irg->outs field (which is private to this module)
- without public access routine */
+#include "irgraph_t.h"
#include "irprog_t.h"
#include "irgwalk.h"
#include "string.h"
+#ifdef DEBUG_libfirm
+/* Note: ir_node.out_valid and ir_graph.n_outs are only present when DEBUG_libfirm is defined */
+/* Accesses to out_valid and n_outs are fenced out to avoid breakage
+ when compiling with neither DEBUG_libfirm or NDEBUG defined */
+#endif /* defined DEBUG_libfirm */
+
/**********************************************************************/
/** Accessing the out datastructures **/
/**********************************************************************/
node->out = NULL;
#ifdef DEBUG_libfirm
node->out_valid = 0;
-#endif
+#endif /* defined DEBUG_libfirm */
}
/* returns the number of successors of the node: */
INLINE int get_irn_n_outs (ir_node *node) {
#ifdef DEBUG_libfirm
- assert (node->out_valid);
-#endif
+ /* assert (node->out_valid); */
+#endif /* defined DEBUG_libfirm */
return (int)(node->out[0]);
}
assert(node);
assert(pos >= 0 && pos < get_irn_n_outs(node));
#ifdef DEBUG_libfirm
- assert (node->out_valid);
-#endif
+ /* assert (node->out_valid); */
+#endif /* defined DEBUG_libfirm */
return node->out[pos+1];
}
assert(node && out);
assert(pos >= 0 && pos < get_irn_n_outs(node));
#ifdef DEBUG_libfirm
- assert (node->out_valid);
-#endif
+ node->out_valid = 1; /* assume that this function is used correctly */
+#endif /* defined DEBUG_libfirm */
node->out[pos+1] = out;
}
assert(bl && (get_irn_op(bl) == op_Block));
#ifdef DEBUG_libfirm
assert (bl->out_valid);
-#endif
+#endif /* defined DEBUG_libfirm */
for (i = 0; i < (int)bl->out[0]; i++)
if ((get_irn_mode(bl->out[i+1]) == mode_X) &&
(get_irn_op(bl->out[i+1]) != op_End)) n_cfg_outs++;
assert(bl && (get_irn_op(bl) == op_Block));
#ifdef DEBUG_libfirm
assert (bl->out_valid);
-#endif
+#endif /* defined DEBUG_libfirm */
for (i = 0; i < (int)bl->out[0]; i++)
if ((get_irn_mode(bl->out[i+1]) == mode_X) &&
(get_irn_op(bl->out[i+1]) != op_End)) {
if (out_pos == pos) {
- ir_node *cfop = bl->out[i+1];
- return cfop->out[0+1];
+ ir_node *cfop = bl->out[i+1];
+ return cfop->out[0+1];
} else {
out_pos++;
}
irg_walk_func *pre, irg_walk_func *post,
void *env) {
assert(node);
- if (get_irg_outs_state(current_ir_graph) != no_outs) {
+ if (get_irg_outs_state(current_ir_graph) != outs_none) {
inc_irg_visited (current_ir_graph);
irg_out_walk_2(node, pre, post, env);
}
n->out = free;
#ifdef DEBUG_libfirm
n->out_valid = 1;
-#endif
+#endif /* defined DEBUG_libfirm */
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
void compute_outs(ir_graph *irg) {
ir_graph *rem = current_ir_graph;
int n_out_edges = 0;
- ir_node **end = NULL;
+ ir_node **end = NULL; /* Only for debugging */
current_ir_graph = irg;
/* Update graph state */
assert(get_irg_phase_state(current_ir_graph) != phase_building);
- if (current_ir_graph->outs_state != no_outs) free_outs(current_ir_graph);
+ if (current_ir_graph->outs_state != outs_none) free_outs(current_ir_graph);
current_ir_graph->outs_state = outs_consistent;
/* This first iteration counts the overall number of out edges and the
/* allocate memory for all out edges. */
irg->outs = (ir_node **) xmalloc (n_out_edges * sizeof(ir_node *));
+#ifdef DEBUG_libfirm
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. */
inc_irg_visited(irg);
end = set_out_edges(get_irg_end(irg), irg->outs);
+#ifdef DEBUG_libfirm
/* Check how much memory we have used */
assert (end == (irg->outs + n_out_edges));
+#endif /* defined DEBUG_libfirm */
/* 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
static void node_arity_count(ir_node * node, void * env)
{
- int *anz = (int *) env, arity, i, start;
+ int *anz = (int *) env, arity, n_outs, i, start;
ir_node *succ;
- arity = 1 + get_irn_arity(node)
- + ((is_Block(node)) ? 0 : 1);
- *anz += arity;
-
+ arity = get_irn_arity(node);
start = (is_Block(node)) ? 0 : -1;
- for(i = start; i < get_irn_arity(node); i++) {
+
+ 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)succ->out + 1);
}
------------------------------------------- */
static void set_out_pointer(ir_node * node, void * env) {
- int i;
+ int i, arity = get_irn_arity(node);
ir_node *succ;
int start = (!is_Block(node)) ? -1 : 0;
- for(i = start; i < get_irn_arity(node); i++) {
+ for(i = start; i < arity; i++) {
succ = get_irn_n(node, i);
succ->out[get_irn_n_outs(succ)+1] = node;
succ->out[0] = (ir_node *) (get_irn_n_outs(succ) + 1);
assert(get_irp_ip_view_state() == ip_view_valid &&
"Cannot construct outs for invalid ip view.");
- if (irp->outs_state != no_outs) free_ip_outs();
+ if (irp->outs_state != outs_none) {
+ free_ip_outs();
+ }
global_count = n_out_edges = count_ip_outs();
out_edges = (ir_node **) malloc (n_out_edges * sizeof(ir_node *));
free(out_edges);
set_irp_ip_outedges(NULL);
}
- irp->outs_state = no_outs;
+ irp->outs_state = outs_none;
}
void free_outs(ir_graph *irg) {
- /* current_ir_graph->outs_state = no_outs; */
- irg->outs_state = no_outs;
+ /* current_ir_graph->outs_state = outs_none; */
+ irg->outs_state = outs_none;
if (irg->outs) {
+#ifdef DEBUG_libfirm
memset(irg->outs, 0, irg->n_outs);
+#endif /* defined DEBUG_libfirm */
free(irg->outs);
irg->outs = NULL;
+#ifdef DEBUG_libfirm
irg->n_outs = 0;
+#endif /* defined DEBUG_libfirm */
}
- //irg_walk_graph (irg, reset_outs, NULL, NULL);
+#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);
+#endif /* defined DEBUG_libfirm */
}
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