arm: Fix stack alignment

ir/be/arm/arm_bearch_t.h

@@ -16,6 +16,8 @@
 #include "beirg.h"
 #include "firm_types.h"
 
+#define ARM_PO2_STACK_ALIGNMENT 3
+
 typedef struct arm_irg_data_t {
 	bool omit_fp;
 } arm_irg_data_t;

ir/be/arm/arm_finish.c

@@ -145,7 +145,7 @@ void arm_finish_graph(ir_graph *irg)
 	/* fix stack entity offsets */
 	be_fix_stack_nodes(irg, &arm_registers[REG_SP]);
 	be_birg_from_irg(irg)->non_ssa_regs = NULL;
-	be_sim_stack_pointer(irg, misalign, 2, arm_sp_sim);
+	be_sim_stack_pointer(irg, misalign, ARM_PO2_STACK_ALIGNMENT, arm_sp_sim);
 
 	/* do peephole optimizations and fix stack offsets */
 	arm_peephole_optimization(irg);

ir/be/arm/arm_transform.c

@@ -35,8 +35,6 @@
 #include "gen_arm_regalloc_if.h"
 #include "gen_arm_new_nodes.h"
 
-#define ARM_PO2_STACK_ALIGNMENT 3
-
 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
 
 static const arch_register_t *sp_reg = &arm_registers[REG_SP];