[CIR][ThroughMLIR] File MLIRLoweringPrepare.cpp is moved to

`clang/lib/CIR/Dialect/Transforms`.

Author: terapines-osc-cir

clang/lib/CIR/Dialect/Transforms/CMakeLists.txt

@@ -14,6 +14,7 @@ add_clang_library(MLIRCIRTransforms
   SCFPrepare.cpp
   CallConvLowering.cpp
   HoistAllocas.cpp
+  MLIRLoweringPrepare.cpp
 
   DEPENDS
   MLIRCIRPassIncGen

clang/lib/CIR/Lowering/ThroughMLIR/MLIRLoweringPrepare.cpp renamed to clang/lib/CIR/Dialect/Transforms/MLIRLoweringPrepare.cpp

@@ -1,3 +1,16 @@
+//===- MLIRLoweringPrepare.cpp - Lowering from CIR to LLVMIR --------------===//
+//
+// 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 contains helper function for implementing
+// lowering of CIR operations to LLVMIR.
+//
+//===----------------------------------------------------------------------===//
+
 #include "mlir/IR/BuiltinOps.h"
 #include "mlir/IR/IRMapping.h"
 #include "mlir/Pass/Pass.h"
@@ -109,4 +122,4 @@ std::unique_ptr<mlir::Pass> createMLIRLoweringPreparePass() {
   return std::make_unique<MLIRLoweringPrepare>();
 }
 
-} // namespace cir
+} // namespace cir

clang/lib/CIR/Lowering/ThroughMLIR/CMakeLists.txt

@@ -9,7 +9,6 @@ add_clang_library(clangCIRLoweringThroughMLIR
   LowerCIRLoopToSCF.cpp
   LowerCIRToMLIR.cpp
   LowerMLIRToLLVM.cpp
-  MLIRLoweringPrepare.cpp
 
   DEPENDS
   MLIRCIROpsIncGen

clang/lib/CIR/Lowering/ThroughMLIR/LowerCIRToMLIR.cpp

@@ -1,4 +1,4 @@
-//====- LowerCIRToMLIR.cpp - Lowering from CIR to MLIR --------------------===//
+//===- LowerCIRToMLIR.cpp - Lowering from CIR to MLIR ---------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.