diff options
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 24 |
1 files changed, 24 insertions, 0 deletions
@@ -5169,6 +5169,30 @@ extern tree build_duplicate_type (tree); extern int flags_from_decl_or_type (const_tree); extern int call_expr_flags (const_tree); +/* Call argument flags. */ + +/* Nonzero if the argument is not dereferenced recursively, thus only + directly reachable memory is read or written. */ +#define EAF_DIRECT (1 << 0) +/* Nonzero if memory reached by the argument is not clobbered. */ +#define EAF_NOCLOBBER (1 << 1) +/* Nonzero if the argument does not escape. */ +#define EAF_NOESCAPE (1 << 2) +/* Nonzero if the argument is not used by the function. */ +#define EAF_UNUSED (1 << 3) + +/* Call return flags. */ + +/* Mask for the argument number that is returned. Lower two bits of + the return flags, encodes argument slots zero to three. */ +#define ERF_RETURN_ARG_MASK (3) +/* Nonzero if the return value is equal to the argument number + flags & ERF_RETURN_ARG_MASK. */ +#define ERF_RETURNS_ARG (1 << 2) +/* Nonzero if the return value does not alias with anything. Functions + with the malloc attribute have this set on their return value. */ +#define ERF_NOALIAS (1 << 3) + extern int setjmp_call_p (const_tree); extern bool gimple_alloca_call_p (const_gimple); extern bool alloca_call_p (const_tree); |