diff options
| -rw-r--r-- | lib/CodeGen/MachineCSE.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index 355acfc..fc9dea8 100644 --- a/lib/CodeGen/MachineCSE.cpp +++ b/lib/CodeGen/MachineCSE.cpp @@ -118,14 +118,14 @@ bool MachineCSE::isPhysDefTriviallyDead(unsigned Reg, MachineBasicBlock::const_iterator E) { unsigned LookAheadLeft = 5; while (LookAheadLeft) { + // Skip over dbg_value's. + while (I != E && I->isDebugValue()) + ++I; + if (I == E) // Reached end of block, register is obviously dead. return true; - // Skip over dbg_value's. - while (I->isDebugValue()) - ++I; - bool SeenDef = false; for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i) { const MachineOperand &MO = I->getOperand(i); |