[PR 83990] Fix location handling in ipa_modify_call_arguments

2018-02-13  Martin Jambor  <mjambor@suse.cz>

	PR c++/83990
	* ipa-param-manipulation.c (ipa_modify_call_arguments): Use location
	of call statements, also set location of a load to a temporary.

From-SVN: r257623

gcc/ChangeLog

+2018-02-13  Martin Jambor  <mjambor@suse.cz>
+
+	PR c++/83990
+	* ipa-param-manipulation.c (ipa_modify_call_arguments): Use location
+	of call statements, also set location of a load to a temporary.
+
 2018-02-13  Sebastian Perta  <sebastian.perta@renesas.com>
 
 	* config/rl78/rl78.c (add_vector_labels): New function.

gcc/ipa-param-manipulation.c

@@ -295,8 +295,7 @@ ipa_modify_call_arguments (struct cgraph_edge *cs, gcall *stmt,
 
 	  poly_int64 byte_offset = exact_div (adj->offset, BITS_PER_UNIT);
 	  base = gimple_call_arg (stmt, adj->base_index);
-	  loc = DECL_P (base) ? DECL_SOURCE_LOCATION (base)
-			      : EXPR_LOCATION (base);
+	  loc = gimple_location (stmt);
 
 	  if (TREE_CODE (base) != ADDR_EXPR
 	      && POINTER_TYPE_P (TREE_TYPE (base)))
@@ -385,6 +384,7 @@ ipa_modify_call_arguments (struct cgraph_edge *cs, gcall *stmt,
 		  else
 		    expr = create_tmp_reg (TREE_TYPE (expr));
 		  gimple_assign_set_lhs (tem, expr);
+		  gimple_set_location (tem, loc);
 		  gsi_insert_before (&gsi, tem, GSI_SAME_STMT);
 		}
 	    }