Let dfs() discover only memory nodes

[libfirm] / ir / be / becopyopt.c

diff --git a/ir/be/becopyopt.c b/ir/be/becopyopt.c
index 818bbf0..b5d3ffc 100644 (file)
--- a/ir/be/becopyopt.c
+++ b/ir/be/becopyopt.c
@@ -856,7 +856,8 @@ void co_dump_appel_graph(const copy_opt_t *co, FILE *f)
 
        ir_node *irn;
        void *it, *nit;
-       int i, n, n_regs;
+       int n, n_regs;
+       unsigned i;
 
        n_regs = 0;
        for(i = 0; i < co->cls->n_regs; ++i) {
@@ -1105,7 +1106,7 @@ static void appel_walker(ir_node *bl, void *data)
                        for(j = 0; j < insn->use_start; ++j) {
                                ir_node *op   = insn->ops[j].carrier;
                                bitset_t *adm = insn->ops[j].regs;
-                               int k;
+                               unsigned k;
                                size_t nr;
 
                                if(!insn->ops[j].has_constraints)
@@ -1201,8 +1202,8 @@ static void appel_inter_block_aff(ir_node *bl, void *data)
 
 void co_dump_appel_graph_cliques(const copy_opt_t *co, FILE *f)
 {
-       int i;
-       int n_colors;
+       unsigned i;
+       unsigned n_colors;
        appel_clique_walker_t env;
        bitset_t *adm = bitset_alloca(co->cls->n_regs);
        be_lv_t *lv = co->cenv->birg->lv;
@@ -1221,7 +1222,7 @@ void co_dump_appel_graph_cliques(const copy_opt_t *co, FILE *f)
        env.color_map = alloca(co->cls->n_regs * sizeof(env.color_map[0]));
        for(i = 0, n_colors = 0; i < co->cls->n_regs; ++i) {
                const arch_register_t *reg = &co->cls->regs[i];
-               env.color_map[i] = arch_register_type_is(reg, ignore) ? -1 : n_colors++;
+               env.color_map[i] = arch_register_type_is(reg, ignore) ? -1 : (int) n_colors++;
        }
 
        env.dumb = 1;
@@ -1233,7 +1234,7 @@ void co_dump_appel_graph_cliques(const copy_opt_t *co, FILE *f)
 
        /* make the first k nodes interfere */
        for(i = 0; i < n_colors; ++i) {
-               int j;
+               unsigned j;
                for(j = i + 1; j < n_colors; ++j)
                        fprintf(f, "%d %d -1 ", i, j);
                fprintf(f, "\n");