diff options
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 8 |
1 files changed, 6 insertions, 2 deletions
@@ -4429,9 +4429,13 @@ extern int list_length (const_tree); extern tree first_field (const_tree); /* Given an initializer INIT, return TRUE if INIT is zero or some - aggregate of zeros. Otherwise return FALSE. */ + aggregate of zeros. Otherwise return FALSE. If NONZERO is not + null, set *NONZERO if and only if INIT is known not to be all + zeros. The combination of return value of false and *NONZERO + false implies that INIT may but need not be all zeros. Other + combinations indicate definitive answers. */ -extern bool initializer_zerop (const_tree); +extern bool initializer_zerop (const_tree, bool * = NULL); extern wide_int vector_cst_int_elt (const_tree, unsigned int); extern tree vector_cst_elt (const_tree, unsigned int); |