diff options
| -rw-r--r-- | lib/Transforms/Scalar/TailDuplication.cpp | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/lib/Transforms/Scalar/TailDuplication.cpp b/lib/Transforms/Scalar/TailDuplication.cpp index c8493b6a5f..8cb28a3b06 100644 --- a/lib/Transforms/Scalar/TailDuplication.cpp +++ b/lib/Transforms/Scalar/TailDuplication.cpp @@ -109,13 +109,9 @@ bool TailDup::shouldEliminateUnconditionalBranch(TerminatorInst *TI) { if (!DTI->use_empty()) return false; - // Do not bother working on dead blocks... - pred_iterator PI = pred_begin(Dest), PE = pred_end(Dest); - if (PI == PE && Dest != Dest->getParent()->begin()) - return false; // It's just a dead block, ignore it... - - // Also, do not bother with blocks with only a single predecessor: simplify + // Do not bother with blocks with only a single predecessor: simplify // CFG will fold these two blocks together! + pred_iterator PI = pred_begin(Dest), PE = pred_end(Dest); ++PI; if (PI == PE) return false; // Exactly one predecessor! |