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-rw-r--r--lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index 0ffb4da..d34a52d 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -454,6 +454,9 @@ void ScheduleDAGSDNodes::ComputeOperandLatency(SDNode *Def, SDNode *Use,
return;
unsigned DefIdx = Use->getOperand(OpIdx).getResNo();
+ if (Use->isMachineOpcode())
+ // Adjust the use operand index by num of defs.
+ OpIdx += TII->get(Use->getMachineOpcode()).getNumDefs();
int Latency = TII->getOperandLatency(InstrItins, Def, DefIdx, Use, OpIdx);
if (Latency >= 0)
dep.setLatency(Latency);