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-rw-r--r--contrib/llvm-project/llvm/lib/CodeGen/MachineInstrBundle.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/CodeGen/MachineInstrBundle.cpp b/contrib/llvm-project/llvm/lib/CodeGen/MachineInstrBundle.cpp
index 6ca97031b92a..759cff179790 100644
--- a/contrib/llvm-project/llvm/lib/CodeGen/MachineInstrBundle.cpp
+++ b/contrib/llvm-project/llvm/lib/CodeGen/MachineInstrBundle.cpp
@@ -144,6 +144,10 @@ void llvm::finalizeBundle(MachineBasicBlock &MBB,
SmallSet<Register, 8> UndefUseSet;
SmallVector<MachineOperand*, 4> Defs;
for (auto MII = FirstMI; MII != LastMI; ++MII) {
+ // Debug instructions have no effects to track.
+ if (MII->isDebugInstr())
+ continue;
+
for (unsigned i = 0, e = MII->getNumOperands(); i != e; ++i) {
MachineOperand &MO = MII->getOperand(i);
if (!MO.isReg())