ia32: fix 8/16 bit push/pop

ir/be/ia32/bearch_ia32.c

@@ -187,7 +187,8 @@ static void ia32_set_frame_offset(ir_node *irn, int bias)
 			/* Pop nodes modify the stack pointer before calculating the
 			 * destination address, so fix this here
 			 */
-			bias -= 4;
+			ir_mode *mode = get_ia32_ls_mode(irn);
+			bias -= get_mode_size_bytes(mode);
 		}
 	}
 	add_ia32_am_offs_int(irn, bias);
@@ -198,11 +199,15 @@ static int ia32_get_sp_bias(const ir_node *node)
 	if (is_ia32_Call(node))
 		return -(int)get_ia32_call_attr_const(node)->pop;
 
-	if (is_ia32_Push(node))
-		return 4;
+	if (is_ia32_Push(node)) {
+		ir_mode *ls_mode = get_ia32_ls_mode(node);
+		return get_mode_size_bytes(ls_mode);
+	}
 
-	if (is_ia32_Pop(node) || is_ia32_PopMem(node))
-		return -4;
+	if (is_ia32_Pop(node) || is_ia32_PopMem(node)) {
+		ir_mode *ls_mode = get_ia32_ls_mode(node);
+		return -get_mode_size_bytes(ls_mode);
+	}
 
 	if (is_ia32_Leave(node) || is_ia32_CopyEbpEsp(node)) {
 		return SP_BIAS_RESET;

ir/be/ia32/ia32_optimize.c

@@ -424,6 +424,7 @@ static void peephole_IncSP_Store_to_push(ir_node *irn)
 
 		ir_node *push = new_bd_ia32_Push(get_irn_dbg_info(store), block, noreg, noreg,
 		                                 mem, val, curr_sp);
+		set_ia32_ls_mode(push, ia32_mode_gp);
 		copy_mark(store, push);
 
 		if (first_push == NULL)
@@ -595,6 +596,7 @@ static void peephole_Load_IncSP_to_pop(ir_node *irn)
 
 		ir_node *pop = new_bd_ia32_Pop(get_irn_dbg_info(load), block, mem, pred_sp);
 		arch_set_irn_register_out(pop, pn_ia32_Load_res, reg);
+		set_ia32_ls_mode(pop, ia32_mode_gp);
 
 		copy_mark(load, pop);
 
@@ -659,6 +661,7 @@ static ir_node *create_pop(dbg_info *dbgi, ir_node *block,
 	ir_graph              *irg = get_irn_irg(block);
 
 	ir_node *pop = new_bd_ia32_Pop(dbgi, block, get_irg_no_mem(irg), stack);
+	set_ia32_ls_mode(pop, ia32_mode_gp);
 
 	stack = new_r_Proj(pop, ia32_mode_gp, pn_ia32_Pop_stack);
 	arch_set_irn_register(stack, esp);