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-rw-r--r--lib/CodeGen/MachineInstr.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 46ea00383b..594482e2ac 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -264,7 +264,7 @@ void MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const {
NeedComma = true;
}
- if (isKill() || isDead() || isUndef() || isInternalRead()) {
+ if (isKill() || isDead() || (isUndef() && isUse()) || isInternalRead()) {
if (NeedComma) OS << ',';
NeedComma = false;
if (isKill()) {