[NVPTX] Don't leak dead instructions after unlinking them from the BasicBlock

llvm-svn: 242417
diff --git a/llvm/lib/Target/NVPTX/NVPTXLowerAggrCopies.cpp b/llvm/lib/Target/NVPTX/NVPTXLowerAggrCopies.cpp
index ed758e8..54be21d 100644
--- a/llvm/lib/Target/NVPTX/NVPTXLowerAggrCopies.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXLowerAggrCopies.cpp
@@ -174,7 +174,7 @@
   LoopPhi->addIncoming(IndexPtr, LoopBB);
   LoopPhi->addIncoming(len, CopyBackwardsBB);
   BranchInst::Create(ExitBB, LoopBB, CompareN, ThenTerm);
-  ThenTerm->removeFromParent();
+  ThenTerm->eraseFromParent();
 
   // Copying forward.
   BasicBlock *FwdLoopBB =
@@ -193,7 +193,7 @@
   FwdCopyPhi->addIncoming(ConstantInt::get(TypeOfLen, 0), CopyForwardBB);
 
   BranchInst::Create(ExitBB, FwdLoopBB, CompareN, ElseTerm);
-  ElseTerm->removeFromParent();
+  ElseTerm->eraseFromParent();
 }
 
 // Lower memset to loop.