[llvm] [IR] Use alloc markers for operator delete variants (PR #138261)

[Nikita Popov via llvm-commits]

================
@@ -54,7 +54,10 @@ class User : public Value {
   void *operator new(size_t Size) = delete;
 
   /// Indicates this User has operands "hung off" in another allocation.
-  struct HungOffOperandsAllocMarker {};
+  struct HungOffOperandsAllocMarker {
+    /// The number of operands for this User.
+    const unsigned NumOps;
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nikic wrote:

```suggestion
    unsigned NumOps;
```
Avoid (non-static) const members.

https://github.com/llvm/llvm-project/pull/138261