[clang] [CIR] Add support for normal cleanups (PR #149948)

[Henrich Lauko via cfe-commits]

================
@@ -0,0 +1,100 @@
+//===-- EHScopeStack.h - Stack for cleanup CIR generation -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// These classes should be the minimum interface required for other parts of
+// CIR CodeGen to emit cleanups.  The implementation is in CIRGenCleanup.cpp and
+// other implemenentation details that are not widely needed are in
+// CIRGenCleanup.h.
+//
+// TODO(cir): this header should be shared between LLVM and CIR codegen.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_LIB_CIRGEN_EHSCOPESTACK_H
+#define LLVM_CLANG_LIB_CIRGEN_EHSCOPESTACK_H
----------------
xlauko wrote:

```suggestion
#ifndef CLANG_LIB_CIR_CODEGEN_EHSCOPESTACK_H
#define CLANG_LIB_CIR_CODEGEN_EHSCOPESTACK_H
```

https://github.com/llvm/llvm-project/pull/149948