[clang] [CIR] Add framework for CIR to LLVM IR lowering (PR #124650)

[Erich Keane via cfe-commits]

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@@ -0,0 +1,36 @@
+//====- LowerToLLVM.h- Lowering from CIR to LLVM --------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares an interface for converting CIR modules to LLVM IR.
+//
+//===----------------------------------------------------------------------===//
+#ifndef CLANG_CIR_LOWERTOLLVM_H
+#define CLANG_CIR_LOWERTOLLVM_H
+
+#include "mlir/Pass/Pass.h"
+
+#include <memory>
+
+namespace llvm {
+class LLVMContext;
+class Module;
+} // namespace llvm
+
+namespace mlir {
+class ModuleOp;
+} // namespace mlir
+
+namespace cir {
+
+namespace direct {
+std::unique_ptr<llvm::Module>
+lowerDirectlyFromCIRToLLVMIR(mlir::ModuleOp M, llvm::LLVMContext &Ctx);
+} // namespace direct
+} // namespace cir
+
+#endif // CLANG_CIR_LOWERTOLLVM_H
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erichkeane wrote:

needs end of line at the end of file.  Technically no longer a UB, but it makes Github grumpy.

https://github.com/llvm/llvm-project/pull/124650