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respect dependency edges in dead code elimination
[libfirm]
/
ir
/
common
/
irtools.c
diff --git
a/ir/common/irtools.c
b/ir/common/irtools.c
index
426ff8f
..
deecaab
100644
(file)
--- a/
ir/common/irtools.c
+++ b/
ir/common/irtools.c
@@
-21,7
+21,6
@@
* @file
* @brief Some often needed tool-functions
* @author Michael Beck
* @file
* @brief Some often needed tool-functions
* @author Michael Beck
- * @version $Id$
*/
#include "config.h"
*/
#include "config.h"
@@
-54,8
+53,11
@@
void firm_clear_node_and_phi_links(ir_node *n, void *env)
void firm_clear_block_phis(ir_node *node, void *env)
{
(void) env;
void firm_clear_block_phis(ir_node *node, void *env)
{
(void) env;
- if (is_Block(node))
+ if (is_Block(node))
{
set_Block_phis(node, NULL);
set_Block_phis(node, NULL);
+ } else if (is_Phi(node)) {
+ set_Phi_next(node, NULL);
+ }
}
void firm_collect_block_phis(ir_node *node, void *env)
}
void firm_collect_block_phis(ir_node *node, void *env)
@@
-178,6
+180,7
@@
void irn_rewire_inputs(ir_node *node)
{
ir_node *new_node;
int arity;
{
ir_node *new_node;
int arity;
+ int n_deps;
int i;
new_node = get_new_node(node);
int i;
new_node = get_new_node(node);
@@
-195,6
+198,13
@@
void irn_rewire_inputs(ir_node *node)
set_irn_n(new_node, i, new_in);
}
set_irn_n(new_node, i, new_in);
}
+ n_deps = get_irn_deps(new_node);
+ for (i = 0; i < n_deps; ++i) {
+ ir_node *dep = get_irn_dep(node, i);
+ ir_node *new_dep = get_new_node(dep);
+ set_irn_dep(new_node, i, new_dep);
+ }
+
/* Now the new node is complete. We can add it to the hash table for CSE. */
add_identities(new_node);
}
/* Now the new node is complete. We can add it to the hash table for CSE. */
add_identities(new_node);
}