diff options
Diffstat (limited to 'llvm/lib/CodeGen/TailDuplicator.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/TailDuplicator.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/TailDuplicator.cpp b/llvm/lib/CodeGen/TailDuplicator.cpp index f2349f28243..059c1dc5483 100644 --- a/llvm/lib/CodeGen/TailDuplicator.cpp +++ b/llvm/lib/CodeGen/TailDuplicator.cpp @@ -824,6 +824,8 @@ bool TailDuplicator::tailDuplicate(MachineFunction &MF, bool IsSimple, // This has to check PrevBB->succ_size() because EH edges are ignored by // AnalyzeBranch. if (PrevBB->succ_size() == 1 && + // Layout preds are not always CFG preds. Check. + *PrevBB->succ_begin() == TailBB && !TII->analyzeBranch(*PrevBB, PriorTBB, PriorFBB, PriorCond, true) && PriorCond.empty() && !PriorTBB && TailBB->pred_size() == 1 && !TailBB->hasAddressTaken()) { |
