diff options
Diffstat (limited to 'llvm/include/llvm/Support/GenericDomTree.h')
| -rw-r--r-- | llvm/include/llvm/Support/GenericDomTree.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/include/llvm/Support/GenericDomTree.h b/llvm/include/llvm/Support/GenericDomTree.h index 8d9640f76fd..635c87a106f 100644 --- a/llvm/include/llvm/Support/GenericDomTree.h +++ b/llvm/include/llvm/Support/GenericDomTree.h @@ -522,7 +522,9 @@ class DominatorTreeBase { /// /// Batch updates should be generally faster when performing longer sequences /// of updates than calling insertEdge/deleteEdge manually multiple times, as - /// they can reorder the updates and remove redundant ones internally. + /// it can reorder the updates and remove redundant ones internally. + /// The batch updater is also able to detect sequences of zero and exactly one + /// update -- it's optimized to do less work in these cases. /// /// Note that for postdominators it automatically takes care of applying /// updates on reverse edges internally (so there's no need to swap the |
