Use the correct mode for adding to a pointer.

This unbreaks the backend option 'profilegenerate'.

ir/ir/irprofile.c

@@ -219,16 +219,17 @@ static void instrument_block(ir_node *const bb, ir_node *const address, unsigned
 		return;
 
 	ir_type *const type_Iu = get_entity_type(get_irn_entity_attr(address));
-	ir_node *const unknown = new_r_Unknown(irg, mode_M);
-	ir_node *const cnst    = new_r_Const_long(irg, mode_Iu, get_mode_size_bytes(mode_Iu) * id);
-	ir_node *const offset  = new_r_Add(bb, address, cnst);
-	ir_node *const load    = new_r_Load(bb, unknown, offset, mode_Iu, type_Iu, cons_none);
-	ir_node *const lmem    = new_r_Proj(load, mode_M, pn_Load_M);
-	ir_node *const proji   = new_r_Proj(load, mode_Iu, pn_Load_res);
-	ir_node *const one     = new_r_Const_one(irg, mode_Iu);
-	ir_node *const add     = new_r_Add(bb, proji, one);
-	ir_node *const store   = new_r_Store(bb, lmem, offset, add, type_Iu, cons_none);
-	ir_node *const smem    = new_r_Proj(store, mode_M, pn_Store_M);
+	ir_node *const unknown  = new_r_Unknown(irg, mode_M);
+	ir_mode *const mode_off = get_reference_offset_mode(get_irn_mode(address));
+	ir_node *const cnst     = new_r_Const_long(irg, mode_off, get_mode_size_bytes(mode_Iu) * id);
+	ir_node *const offset   = new_r_Add(bb, address, cnst);
+	ir_node *const load     = new_r_Load(bb, unknown, offset, mode_Iu, type_Iu, cons_none);
+	ir_node *const lmem     = new_r_Proj(load, mode_M, pn_Load_M);
+	ir_node *const proji    = new_r_Proj(load, mode_Iu, pn_Load_res);
+	ir_node *const one      = new_r_Const_one(irg, mode_Iu);
+	ir_node *const add      = new_r_Add(bb, proji, one);
+	ir_node *const store    = new_r_Store(bb, lmem, offset, add, type_Iu, cons_none);
+	ir_node *const smem     = new_r_Proj(store, mode_M, pn_Store_M);
 
 	set_irn_link(bb, smem);
 	set_irn_link(smem, load);