[llvm] [NewGVN] Set parent to the temporal instructions that are generated during phi-of-ops optimization (PR #66314)

[Nikita Popov via llvm-commits]

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@@ -538,6 +538,8 @@ class NewGVN {
   // created that they are known equivalent to.
   DenseMap<const Value *, PHINode *> RealToTemp;
 
+  Value *PhiOfOpsCandidate;
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nikic wrote:

Does this need a `= nullptr` initialization?

https://github.com/llvm/llvm-project/pull/66314