[clang] [llvm] [WIP] ABI Lowering Library (PR #140112)

[Nikita Popov via llvm-commits]

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@@ -0,0 +1,74 @@
+//==---- QualTypeMapper.h - Maps Clang QualType to LLVMABI Types -----------==//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// Maps Clang QualType instances to corresponding LLVM ABI type
+/// representations. This mapper translates high-level type information from the
+/// AST into low-level ABI-specific types that encode size, alignment, and
+/// layout details required for code generation and cross-language
+/// interoperability.
+///
+//===----------------------------------------------------------------------===//
+#ifndef CLANG_CODEGEN_QUALTYPE_MAPPER_H
+#define CLANG_CODEGEN_QUALTYPE_MAPPER_H
+
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/AST/Type.h"
+#include "clang/AST/TypeOrdering.h"
+#include "llvm/ABI/Types.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/Support/Allocator.h"
+
+namespace clang {
+namespace mapper {
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nikic wrote:

```suggestion
namespace CodeGen {
```
To match other files in this directory.

https://github.com/llvm/llvm-project/pull/140112