1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
index 36aeaa176a2..48daf2ccd06 100644
--- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -1367,3 +1367,11 @@ LiveIntervals::repairIntervalsInRange(MachineBasicBlock *MBB,
     repairOldRegInRange(Begin, End, endIdx, LI, Reg);
   }
 }
+
+void LiveIntervals::removePhysRegDefAt(unsigned Reg, SlotIndex Pos) {
+  for (MCRegUnitIterator Units(Reg, TRI); Units.isValid(); ++Units) {
+    if (LiveRange *LR = getCachedRegUnit(*Units))
+      if (VNInfo *VNI = LR->getVNInfoAt(Pos))
+        LR->removeValNo(VNI);
+  }
+}