diff options
Diffstat (limited to 'lib/CodeGen/TailDuplication.cpp')
| -rw-r--r-- | lib/CodeGen/TailDuplication.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp index 6e832d99ef..d16369a4ca 100644 --- a/lib/CodeGen/TailDuplication.cpp +++ b/lib/CodeGen/TailDuplication.cpp @@ -568,9 +568,9 @@ bool TailDuplicatePass::isSimpleBB(MachineBasicBlock *TailBB) { if (TailBB->succ_size() != 1) return false; - MachineBasicBlock::iterator I = TailBB->begin(); + MachineBasicBlock::iterator I = TailBB->getFirstNonPHI(); MachineBasicBlock::iterator E = TailBB->end(); - while (I != E && I->isDebugValue()) + while (I->isDebugValue() && I != E) ++I; if (I == E) return true; @@ -712,7 +712,7 @@ TailDuplicatePass::TailDuplicate(MachineBasicBlock *TailBB, MachineFunction &MF, DenseSet<unsigned> UsedByPhi; getRegsUsedByPHIs(*TailBB, &UsedByPhi); - if (isSimpleBB(TailBB)) + if (0 && isSimpleBB(TailBB)) return duplicateSimpleBB(TailBB, TDBBs, UsedByPhi, Copies); // Iterate through all the unique predecessors and tail-duplicate this |