fix a few more warnings

ir/be/bechordal.c

@@ -77,6 +77,7 @@ typedef struct _be_chordal_alloc_env_t {
 /* Make a fourcc for border checking. */
 #define BORDER_FOURCC				FOURCC('B', 'O', 'R', 'D')
 
+#if 0
 static void check_border_list(struct list_head *head)
 {
   border_t *x;
@@ -93,7 +94,7 @@ static void check_heads(be_chordal_env_t *env)
     check_border_list(ent->value);
   }
 }
-
+#endif
 
 /**
  * Add an interval border to the list of a block's list
@@ -221,8 +222,6 @@ static be_insn_t *chordal_scan_insn(be_chordal_env_t *env, ir_node *irn)
 static ir_node *prepare_constr_insn(be_chordal_env_t *env, ir_node *irn)
 {
 	be_insn_t *insn = chordal_scan_insn(env, irn);
-	int n_uses      = be_insn_n_uses(insn);
-	int n_defs      = be_insn_n_defs(insn);
 	int i;
 
 	if(!insn->has_constraints)
@@ -338,6 +337,10 @@ static ir_node *pre_process_constraints(be_chordal_alloc_env_t *alloc_env, be_in
 		Now, figure out which input operand must be copied since it has input
 		constraints which are also output constraints.
 	*/
+	(void) bl;
+	(void) copy;
+	(void) bs;
+	(void) dbg;
 #if 0
 	for(i = insn->use_start; i < insn->n_ops; ++i) {
 		be_operand_t *op = &insn->ops[i];

ir/be/bechordal_main.c

@@ -435,9 +435,6 @@ static be_ra_timer_t *be_ra_chordal_main(const be_irg_t *bi)
 
 	/* Perform the following for each register class. */
 	for (j = 0, m = arch_isa_get_n_reg_class(isa); j < m; ++j) {
-		//FILE *f;
-		copy_opt_t *co = NULL;
-
 		chordal_env.cls           = arch_isa_get_reg_class(isa, j);
 		chordal_env.border_heads  = pmap_create();
 		chordal_env.ignore_colors = bitset_malloc(chordal_env.cls->n_regs);

ir/be/belistsched.c

@@ -294,7 +294,7 @@ static void *reg_pressure_block_init(void *graph_env, ir_node *bl)
 			int i, n;
 
 			for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
-				ir_node *op = get_irn_n(irn, i);
+				//ir_node *op = get_irn_n(irn, i);
 				if(must_appear_in_schedule(env->main_env->vtab, env, irn)) {
 					usage_stats_t *us = get_or_set_usage_stats(env, irn);
 #if 0 /* Liveness is not computed here! */
@@ -600,17 +600,6 @@ static INLINE void make_users_ready(block_sched_env_t *env, ir_node *irn)
 	}
 }
 
-/**
- * Compare to nodes using pointer equality.
- * @param p1 Node one.
- * @param p2 Node two.
- * @return 0 if they are identical.
- */
-static int node_cmp_func(const void *p1, const void *p2)
-{
-    return p1 != p2;
-}
-
 /**
  * Append an instruction to a schedule.
  * @param env The block scheduling environment.

ir/be/belive.c

@@ -555,7 +555,6 @@ static void lv_check_walker(ir_node *bl, void *data)
 	else if(curr) {
 		unsigned n_curr  = curr[0].u.head.n_members;
 		unsigned n_fresh = fr[0].u.head.n_members;
-		unsigned n = MIN(n_curr, n_fresh);
 
 		unsigned i;