Update regunits in RegisterCoalescer::reMaterializeTrivialDef.

Old code would only update physreg live intervals.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158881 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/RegisterCoalescer.cpp b/lib/CodeGen/RegisterCoalescer.cpp
index 395884d4007153b3bd8d00682ff881d4e180ed26..de58b82d3a34caf673d5afffba96d0f138d6bbc6 100644 (file)
--- a/lib/CodeGen/RegisterCoalescer.cpp
+++ b/lib/CodeGen/RegisterCoalescer.cpp
@@ -797,12 +797,10 @@ bool RegisterCoalescer::reMaterializeTrivialDef(LiveInterval &SrcInt,
 
   SlotIndex NewMIIdx = LIS->getInstructionIndex(NewMI);
   for (unsigned i = 0, e = NewMIImplDefs.size(); i != e; ++i) {
-    unsigned reg = NewMIImplDefs[i];
-    LiveInterval &li = LIS->getInterval(reg);
-    VNInfo *DeadDefVN = li.getNextValue(NewMIIdx.getRegSlot(),
-                                        LIS->getVNInfoAllocator());
-    LiveRange lr(NewMIIdx.getRegSlot(), NewMIIdx.getDeadSlot(), DeadDefVN);
-    li.addRange(lr);
+    unsigned Reg = NewMIImplDefs[i];
+    for (MCRegUnitIterator Units(Reg, TRI); Units.isValid(); ++Units)
+      if (LiveInterval *LI = LIS->getCachedRegUnit(*Units))
+        LI->createDeadDef(NewMIIdx.getRegSlot(), LIS->getVNInfoAllocator());
   }
 
   CopyMI->eraseFromParent();