[mlir][Target][Cpp] Cleanup includes (#85105)

Author: marbre

mlir/include/mlir/Target/Cpp/CppEmitter.h

@@ -13,13 +13,11 @@
 #ifndef MLIR_TARGET_CPP_CPPEMITTER_H
 #define MLIR_TARGET_CPP_CPPEMITTER_H
 
-#include "mlir/IR/BuiltinTypes.h"
-#include "mlir/IR/Value.h"
-#include "llvm/ADT/ScopedHashTable.h"
 #include "llvm/Support/raw_ostream.h"
-#include <stack>
 
 namespace mlir {
+struct LogicalResult;
+class Operation;
 namespace emitc {
 
 /// Translates the given operation to C++ code. The operation or operations in

mlir/lib/Target/Cpp/TranslateToCpp.cpp

@@ -18,11 +18,13 @@
 #include "mlir/Support/LLVM.h"
 #include "mlir/Target/Cpp/CppEmitter.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/ScopedHashTable.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/TypeSwitch.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/FormatVariadic.h"
+#include <stack>
 #include <utility>
 
 #define DEBUG_TYPE "translate-to-cpp"