Remove the unused parameter const arch_env_t *arch_env from be_spill().

[r22732]

ir/be/benode.c

@@ -1031,14 +1031,13 @@ int be_get_IncSP_align(const ir_node *irn)
 	return a->align;
 }
 
-ir_node *be_spill(const arch_env_t *arch_env, ir_node *block, ir_node *irn)
+ir_node *be_spill(ir_node *block, ir_node *irn)
 {
 	ir_graph                    *irg       = get_irn_irg(block);
 	ir_node                     *frame     = get_irg_frame(irg);
 	const arch_register_class_t *cls       = arch_get_irn_reg_class(irn, -1);
 	const arch_register_class_t *cls_frame = arch_get_irn_reg_class(frame, -1);
 	ir_node                     *spill;
-	(void)arch_env; // TODO remove parameter
 
 	spill = be_new_Spill(cls, cls_frame, irg, block, frame, irn);
 	return spill;

ir/be/benode_t.h

@@ -369,12 +369,11 @@ ir_node *be_Barrier_append_node(ir_node *barrier, ir_node *node);
 /**
  * Make a spill node.
  *
- * @param arch_env  The architecture environment.
  * @param irn       The node to be spilled.
  * @param spill_ctx The context in which the spill is introduced (This is mostly == irn up to the case of Phis).
  * @return          The new spill node.
  */
-ir_node *be_spill(const arch_env_t *arch_env, ir_node *block, ir_node *irn);
+ir_node *be_spill(ir_node *block, ir_node *irn);
 
 /**
  * Make a reload and insert it into the schedule.

ir/be/bespill.c

@@ -446,7 +446,7 @@ static void spill_irn(spill_env_t *env, spill_info_t *spillinfo)
 
 		after = skip_keeps_phis(after);
 
-		spill->spill   = be_spill(env->arch_env, block, to_spill);
+		spill->spill = be_spill(block, to_spill);
 		sched_add_after(after, spill->spill);
 		DB((dbg, LEVEL_1, "\t%+F after %+F\n", spill->spill, after));
 #ifdef FIRM_STATISTICS