diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/loop.texi | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/gcc/doc/loop.texi b/gcc/doc/loop.texi index 1b189c778fd..fee30f8ec65 100644 --- a/gcc/doc/loop.texi +++ b/gcc/doc/loop.texi @@ -108,14 +108,16 @@ edges in the strongly connected components that are not natural loops flag is not set for blocks and edges that belong to natural loops that are in such an irreducible region (but it is set for the entry and exit edges of such a loop, if they lead to/from this region). -@item @code{LOOPS_HAVE_MARKED_SINGLE_EXITS}: If a loop has exactly one -exit edge, this edge is recorded in the loop structure. @code{single_exit} -function can be used to retrieve this edge. +@item @code{LOOPS_HAVE_RECORDED_EXITS}: The lists of exits are recorded +and updated for each loop. This makes some functions (e.g., +@code{get_loop_exit_edges}) more efficient. Some functions (e.g., +@code{single_exit}) can be used only if the lists of exits are +recorded. @end itemize These properties may also be computed/enforced later, using functions @code{create_preheaders}, @code{force_single_succ_latches}, -@code{mark_irreducible_loops} and @code{mark_single_exit_loops}. +@code{mark_irreducible_loops} and @code{record_loop_exits}. The memory occupied by the loops structures should be freed with @code{loop_optimizer_finalize} function. |