Add missing gimple_call_set_fntype

2019-10-04  Martin Jambor  <mjambor@suse.cz>

	* tree-ssa-forwprop.c (simplify_builtin_call): Set gimple call
	fntype when switching to calling memcpy instead of memset.

From-SVN: r276593

gcc/ChangeLog

+2019-10-04  Martin Jambor  <mjambor@suse.cz>
+
+	* tree-ssa-forwprop.c (simplify_builtin_call): Set gimple call
+	fntype when switching to calling memcpy instead of memset.
+
 2019-10-04  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	* hash-table.h (hash_table::empty_slow): Don't assign

gcc/tree-ssa-forwprop.c

@@ -1426,8 +1426,10 @@ simplify_builtin_call (gimple_stmt_iterator *gsi_p, tree callee2)
 	      if (!is_gimple_val (ptr1))
 		ptr1 = force_gimple_operand_gsi (gsi_p, ptr1, true, NULL_TREE,
 						 true, GSI_SAME_STMT);
-	      gimple_call_set_fndecl (stmt2,
-				      builtin_decl_explicit (BUILT_IN_MEMCPY));
+	      tree fndecl = builtin_decl_explicit (BUILT_IN_MEMCPY);
+	      gimple_call_set_fndecl (stmt2, fndecl);
+	      gimple_call_set_fntype (as_a <gcall *> (stmt2),
+				      TREE_TYPE (fndecl));
 	      gimple_call_set_arg (stmt2, 0, ptr1);
 	      gimple_call_set_arg (stmt2, 1, new_str_cst);
 	      gimple_call_set_arg (stmt2, 2,