craig.topper added inline comments.

================
Comment at: llvm/include/llvm/ADT/ArrayRef.h:595-600
+      if (RHS.data() == getEmptyKey().data())
+        return LHS.data() == getEmptyKey().data();
+      if (RHS.data() == getTombstoneKey().data())
+        return LHS.data() == getTombstoneKey().data();
+      return LHS == RHS;
+    }
----------------
lattner wrote:
> I'm pretty sure this method can just be "return LHS == RHS;"  The 
> tombstone/empty comparisons should work without special cases.
Doesn't operator== on ArrayRef compare the elements of the arrays? So wouldn't 
that dereference the invalid pointers used by tombstone/empty?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D103491/new/

https://reviews.llvm.org/D103491

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