introduce Switch node

[libfirm] / ir / opt / dead_code_elimination.c

diff --git a/ir/opt/dead_code_elimination.c b/ir/opt/dead_code_elimination.c
index 00e698d..d2149b3 100644 (file)
--- a/ir/opt/dead_code_elimination.c
+++ b/ir/opt/dead_code_elimination.c
@@ -34,7 +34,6 @@
 #include "iroptimize.h"
 #include "irnode_t.h"
 #include "irgraph_t.h"
-#include "irphase_t.h"
 #include "iredges_t.h"
 #include "irhooks.h"
 #include "irtools.h"
@@ -46,9 +45,6 @@
 #include "irpass.h"
 #include "pmap.h"
 
-/** a pointer to the new phases */
-static ir_phase *new_phases[PHASE_LAST + 1];
-
 /**
  * Reroute the inputs of a node from nodes in the old graph to copied nodes in
  * the new graph
@@ -61,25 +57,13 @@ static void rewire_inputs(ir_node *node, void *env)
 
 static void copy_node_dce(ir_node *node, void *env)
 {
-       ir_phase_id i;
-       ir_node    *new_node = exact_copy(node);
-       ir_graph   *irg      = get_irn_irg(new_node);
+       ir_node  *new_node = exact_copy(node);
+       ir_graph *irg      = get_irn_irg(new_node);
        (void) env;
 
        /* preserve the node numbers for easier debugging */
        new_node->node_nr = node->node_nr;
 
-       /* copy phase information for this node */
-       for (i = PHASE_FIRST; i <= PHASE_LAST; ++i) {
-               ir_phase *phase = irg_get_phase(irg, i);
-               if (phase == NULL)
-                       continue;
-               if (!phase_get_irn_data(phase, node))
-                       continue;
-               phase_set_irn_data(new_phases[i], new_node,
-                                  phase_get_irn_data(phase, node));
-       }
-
        set_irn_link(node, new_node);
        hook_dead_node_elim_subst(irg, node, new_node);
 }
@@ -92,21 +76,7 @@ static void copy_node_dce(ir_node *node, void *env)
  */
 static void copy_graph_env(ir_graph *irg)
 {
-       ir_node    *new_anchor;
-       ir_phase_id i;
-
-       /* init the new_phases array */
-       /* TODO: this is wrong, it should only allocate a new data_ptr inside
-        * the phase! */
-       for (i = PHASE_FIRST; i <= PHASE_LAST; ++i) {
-               ir_phase *old_ph = irg_get_phase(irg, i);
-               if (old_ph == NULL) {
-                       new_phases[i] = NULL;
-               } else {
-                       new_phases[i] = new_phase(irg, old_ph->data_init);
-                       new_phases[i]->priv = old_ph->priv;
-               }
-       }
+       ir_node *new_anchor;
 
        /* copy nodes */
        irg_walk_anchors(irg, copy_node_dce, rewire_inputs, NULL);
@@ -115,19 +85,6 @@ static void copy_graph_env(ir_graph *irg)
        new_anchor = (ir_node*)get_irn_link(irg->anchor);
        assert(new_anchor != NULL);
        irg->anchor = new_anchor;
-
-       /* copy the new phases into the irg */
-       for (i = PHASE_FIRST; i <= PHASE_LAST; ++i) {
-               ir_phase *old_ph = irg_get_phase(irg, i);
-               if (old_ph == NULL)
-                       continue;
-
-               /* Matze: commented out for now: This is a memory leak, but for a real
-                * fix we must not create new phases here, but reuse the old phases
-                * and just create a new data array */
-               /* phase_free(old_ph); */
-               irg->phases[i] = new_phases[i];
-       }
 }
 
 /**
@@ -155,6 +112,7 @@ void dead_node_elimination(ir_graph *irg)
        free_irg_outs(irg);
        free_trouts();
        free_loop_information(irg);
+       free_vrp_data(irg);
        clear_irg_state(irg, IR_GRAPH_STATE_CONSISTENT_DOMINANCE);
 
        /* A quiet place, where the old obstack can rest in peace,