[clang] [CIR] Represent Cleanups with Cleanup scopes (PR #180276)

[Andy Kaylor via cfe-commits]

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@@ -113,6 +114,8 @@ class alignas(EHScopeStack::ScopeStackAlignment) EHCleanupScope
   /// from this index onwards belong to this scope.
   unsigned fixupDepth = 0;
 
+  cir::CleanupScopeOp cleanupScope;
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andykaylor wrote:

The naming here is a bit awkward. You have `cleanupScope` inside a `EHCleanupScope` object. Perhaps `cleanupScopeOp` would be a better name?

https://github.com/llvm/llvm-project/pull/180276