diff options
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index bf68e31..0a0e8b9 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -6157,8 +6157,9 @@ fold_builtin_atomic_always_lock_free (tree arg0, tree arg1) /* Check if a compare_and_swap pattern exists for the mode which represents the required size. The pattern is not allowed to fail, so the existence - of the pattern indicates support is present. */ - if (can_compare_and_swap_p (mode, true)) + of the pattern indicates support is present. Also require that an + atomic load exists for the required size. */ + if (can_compare_and_swap_p (mode, true) && can_atomic_load_p (mode)) return boolean_true_node; else return boolean_false_node; |