diff options
Diffstat (limited to 'lib/Analysis/ScalarEvolution.cpp')
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index a9a444f93a..b8bcdd4165 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -4634,6 +4634,8 @@ ScalarEvolution::HowFarToNonZero(const SCEV *V, const Loop *L) { /// getLoopPredecessor - If the given loop's header has exactly one unique /// predecessor outside the loop, return it. Otherwise return null. +/// This is less strict that the loop "preheader" concept, which requires +/// the predecessor to have only one single successor. /// BasicBlock *ScalarEvolution::getLoopPredecessor(const Loop *L) { BasicBlock *Header = L->getHeader(); |