values may die at every use

[libfirm] / ir / be / beirgmod.c

diff --git a/ir/be/beirgmod.c b/ir/be/beirgmod.c
index f0e64f3..7afcb79 100644 (file)
--- a/ir/be/beirgmod.c
+++ b/ir/be/beirgmod.c
@@ -297,7 +297,7 @@ static ir_node *search_def(ir_node *usage, int pos, pset *copies, pset *copy_blo
        return NULL;
 }
 
-static void fix_usages(pset *copies, pset *copy_blocks, pset *phi_blocks, pset *phis, pset *ignore_uses, pset *uses)
+static void fix_usages(pset *copies, pset *copy_blocks, pset *phi_blocks, pset *phis, pset *ignore_uses)
 {
        int n_outs = 0;
        struct obstack obst;
@@ -320,14 +320,12 @@ static void fix_usages(pset *copies, pset *copy_blocks, pset *phi_blocks, pset *
        for (irn = pset_first(copies); irn; irn = pset_next(copies)) {
                const ir_edge_t *edge;
                foreach_out_edge(irn, edge) {
-                       if(!uses || pset_find_ptr(uses, get_edge_src_irn(edge))) {
-                               if (!pset_find_ptr(ignore_uses, get_edge_src_irn(edge)) ) {
-                                       struct out tmp;
-                                       tmp.irn = get_edge_src_irn(edge);
-                                       tmp.pos = get_edge_src_pos(edge);
-                                       obstack_grow(&obst, &tmp, sizeof(tmp));
-                                       n_outs++;
-                               }
+                       if (!pset_find_ptr(ignore_uses, get_edge_src_irn(edge))) {
+                               struct out tmp;
+                               tmp.irn = get_edge_src_irn(edge);
+                               tmp.pos = get_edge_src_pos(edge);
+                               obstack_grow(&obst, &tmp, sizeof(tmp));
+                               n_outs++;
                        }
                }
        }
@@ -386,20 +384,20 @@ static void remove_odd_phis(pset *copies, pset *unused_copies)
        }
 }
 
-void be_ssa_constr_phis_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *phis, pset *ignore_uses, pset *uses)
+void be_ssa_constr_phis_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *phis, pset *ignore_uses)
 {
        pset *irns = pset_new_ptr(n);
        int i;
 
        for(i = 0; i < n; ++i)
                pset_insert_ptr(irns, nodes[i]);
-       be_ssa_constr_set_phis_ignore(info, irns, phis, ignore_uses, uses);
+       be_ssa_constr_set_phis_ignore(info, irns, phis, ignore_uses);
        del_pset(irns);
 }
 
 void be_ssa_constr_ignore(dom_front_info_t *info, int n, ir_node *nodes[], pset *ignore_uses)
 {
-       be_ssa_constr_phis_ignore(info, n, nodes, NULL, ignore_uses, NULL);
+       be_ssa_constr_phis_ignore(info, n, nodes, NULL, ignore_uses);
 }
 
 void be_ssa_constr(dom_front_info_t *info, int n, ir_node *nodes[])
@@ -408,7 +406,7 @@ void be_ssa_constr(dom_front_info_t *info, int n, ir_node *nodes[])
        be_ssa_constr_ignore(info, n, nodes, empty_set);
 }
 
-void be_ssa_constr_set_phis_ignore(dom_front_info_t *df, pset *nodes, pset *phis, pset *ignore_uses, pset *uses)
+void be_ssa_constr_set_phis_ignore(dom_front_info_t *df, pset *nodes, pset *phis, pset *ignore_uses)
 {
        int n                  = pset_count(nodes);
        pset *blocks           = pset_new_ptr(n);
@@ -439,7 +437,7 @@ void be_ssa_constr_set_phis_ignore(dom_front_info_t *df, pset *nodes, pset *phis
         * Place the phi functions and reroute the usages.
         */
        determine_phi_blocks(nodes, blocks, phi_blocks, df);
-       fix_usages(nodes, blocks, phi_blocks, phis, ignore_uses, uses);
+       fix_usages(nodes, blocks, phi_blocks, phis, ignore_uses);
 
        /* reset the optimizations */
        set_optimize(save_optimize);
@@ -453,12 +451,12 @@ void be_ssa_constr_set_phis_ignore(dom_front_info_t *df, pset *nodes, pset *phis
 void be_ssa_constr_set_phis(dom_front_info_t *df, pset *nodes, pset *phis)
 {
        pset *empty_set = be_empty_set();
-       be_ssa_constr_set_phis_ignore(df, nodes, phis, empty_set, NULL);
+       be_ssa_constr_set_phis_ignore(df, nodes, phis, empty_set);
 }
 
 void be_ssa_constr_set_ignore(dom_front_info_t *df, pset *nodes, pset *ignore_uses)
 {
-       be_ssa_constr_set_phis_ignore(df, nodes, NULL, ignore_uses, NULL);
+       be_ssa_constr_set_phis_ignore(df, nodes, NULL, ignore_uses);
 }
 
 void be_ssa_constr_set(dom_front_info_t *info, pset *nodes)
@@ -467,12 +465,6 @@ void be_ssa_constr_set(dom_front_info_t *info, pset *nodes)
        be_ssa_constr_set_ignore(info, nodes, empty_set);
 }
 
-void be_ssa_constr_set_uses(dom_front_info_t *info, pset *nodes, pset *uses)
-{
-       pset *empty_set = be_empty_set();
-       be_ssa_constr_set_phis_ignore(info, nodes, NULL, empty_set, uses);
-}
-
 /*
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