1 files changed, 6 insertions, 5 deletions
diff --git a/lib/CodeGen/CodeGenPrepare.cpp b/lib/CodeGen/CodeGenPrepare.cpp
index c862cfd28add..c6c93811a0f9 100644
--- a/lib/CodeGen/CodeGenPrepare.cpp
+++ b/lib/CodeGen/CodeGenPrepare.cpp
@@ -2226,10 +2226,11 @@ bool CodeGenPrepare::optimizeCallInst(CallInst *CI, bool& ModifiedDT) {
       ConstantInt *RetVal =
           lowerObjectSizeCall(II, *DL, TLInfo, /*MustSucceed=*/true);
       // Substituting this can cause recursive simplifications, which can
-      // invalidate our iterator.  Use a WeakVH to hold onto it in case this
+      // invalidate our iterator.  Use a WeakTrackingVH to hold onto it in case
+      // this
       // happens.
       Value *CurValue = &*CurInstIterator;
-      WeakVH IterHandle(CurValue);
+      WeakTrackingVH IterHandle(CurValue);
 
       replaceAndRecursivelySimplify(CI, RetVal, TLInfo, nullptr);
 
@@ -4442,9 +4443,9 @@ bool CodeGenPrepare::optimizeMemoryInst(Instruction *MemoryInst, Value *Addr,
   // using it.
   if (Repl->use_empty()) {
     // This can cause recursive deletion, which can invalidate our iterator.
-    // Use a WeakVH to hold onto it in case this happens.
+    // Use a WeakTrackingVH to hold onto it in case this happens.
     Value *CurValue = &*CurInstIterator;
-    WeakVH IterHandle(CurValue);
+    WeakTrackingVH IterHandle(CurValue);
     BasicBlock *BB = CurInstIterator->getParent();
 
     RecursivelyDeleteTriviallyDeadInstructions(Repl, TLInfo);
@@ -5959,7 +5960,7 @@ bool CodeGenPrepare::optimizeInst(Instruction *I, bool& ModifiedDT) {
     // It is possible for very late stage optimizations (such as SimplifyCFG)
     // to introduce PHI nodes too late to be cleaned up.  If we detect such a
     // trivial PHI, go ahead and zap it here.
-    if (Value *V = SimplifyInstruction(P, *DL, TLInfo, nullptr)) {
+    if (Value *V = SimplifyInstruction(P, {*DL, TLInfo})) {
       P->replaceAllUsesWith(V);
       P->eraseFromParent();
       ++NumPHIsElim;