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

[Andy Kaylor via cfe-commits]

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@@ -363,8 +419,20 @@ void CIRGenFunction::popCleanupBlock() {
     ehStack.popCleanup();
     assert(ehStack.hasNormalCleanups() == hasEnclosingCleanups);
 
+    mlir::Block &block = cleanupScope.getCleanupRegion().back();
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andykaylor wrote:

The code above and below the `emitCleanup` call is duplicated from above. Can you move it inside of `emitCleanup`?

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