dbg_value may end a block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99378 91177308-0d34-0410-b5e6-96231b3b80d8
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 @@
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);