diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineBlockPlacement.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineBlockPlacement.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachineBlockPlacement.cpp b/llvm/lib/CodeGen/MachineBlockPlacement.cpp index f61142d202eb..8a1b4031642d 100644 --- a/llvm/lib/CodeGen/MachineBlockPlacement.cpp +++ b/llvm/lib/CodeGen/MachineBlockPlacement.cpp @@ -1185,7 +1185,7 @@ bool MachineBlockPlacement::canTailDuplicateUnplacedPreds( // The integrated tail duplication is really designed for increasing // fallthrough from predecessors from Succ to its successors. We may need // other machanism to handle different cases. - if (Succ->succ_size() == 0) + if (Succ->succ_empty()) return true; // Plus the already placed predecessor. @@ -2050,6 +2050,8 @@ MachineBlockPlacement::findBestLoopTopHelper( BlockChain &HeaderChain = *BlockToChain[OldTop]; if (!LoopBlockSet.count(*HeaderChain.begin())) return OldTop; + if (OldTop != *HeaderChain.begin()) + return OldTop; LLVM_DEBUG(dbgs() << "Finding best loop top for: " << getBlockName(OldTop) << "\n"); |