https://github.com/kazutakahirata created 
https://github.com/llvm/llvm-project/pull/142300

These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.


>From 41fc8e77f362973ffdeaeb2ea0aa7e07cbcaa66d Mon Sep 17 00:00:00 2001
From: Kazu Hirata <k...@google.com>
Date: Sat, 31 May 2025 20:47:22 -0700
Subject: [PATCH] [Serialization] Remove unused includes (NFC)

These are identified by misc-include-cleaner.  I've filtered out those
that break builds.  Also, I'm staying away from llvm-config.h,
config.h, and Compiler.h, which likely cause platform- or
compiler-specific build failures.
---
 clang/lib/Serialization/ASTCommon.cpp     | 3 ---
 clang/lib/Serialization/ASTReader.cpp     | 8 --------
 clang/lib/Serialization/ASTReaderDecl.cpp | 3 ---
 clang/lib/Serialization/ASTReaderStmt.cpp | 5 -----
 clang/lib/Serialization/ASTWriter.cpp     | 6 ------
 clang/lib/Serialization/ASTWriterStmt.cpp | 1 -
 clang/lib/Serialization/ModuleManager.cpp | 2 --
 7 files changed, 28 deletions(-)

diff --git a/clang/lib/Serialization/ASTCommon.cpp 
b/clang/lib/Serialization/ASTCommon.cpp
index 07d3918b144ac..097da3668857c 100644
--- a/clang/lib/Serialization/ASTCommon.cpp
+++ b/clang/lib/Serialization/ASTCommon.cpp
@@ -15,10 +15,7 @@
 #include "clang/AST/DeclObjC.h"
 #include "clang/Basic/IdentifierTable.h"
 #include "clang/Serialization/ASTDeserializationListener.h"
-#include "clang/Serialization/ModuleFile.h"
 #include "llvm/Support/DJB.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/raw_ostream.h"
 
 using namespace clang;
 
diff --git a/clang/lib/Serialization/ASTReader.cpp 
b/clang/lib/Serialization/ASTReader.cpp
index 8d2f105b2dec3..352ccc07fb462 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -47,7 +47,6 @@
 #include "clang/Basic/DiagnosticIDs.h"
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Basic/DiagnosticSema.h"
-#include "clang/Basic/ExceptionSpecificationType.h"
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/FileSystemOptions.h"
 #include "clang/Basic/IdentifierTable.h"
@@ -64,7 +63,6 @@
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/SourceManagerInternals.h"
 #include "clang/Basic/Specifiers.h"
-#include "clang/Basic/Stack.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/TargetOptions.h"
 #include "clang/Basic/TokenKinds.h"
@@ -97,32 +95,26 @@
 #include "clang/Serialization/SerializationDiagnostic.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
-#include "llvm/ADT/APSInt.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/FloatingPointMode.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/Hashing.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/Sequence.h"
 #include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/Bitstream/BitstreamReader.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Compression.h"
 #include "llvm/Support/DJB.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/LEB128.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp 
b/clang/lib/Serialization/ASTReaderDecl.cpp
index e84932c765663..fb31613ded655 100644
--- a/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -49,7 +49,6 @@
 #include "clang/Basic/PragmaKinds.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/Specifiers.h"
-#include "clang/Basic/Stack.h"
 #include "clang/Sema/IdentifierResolver.h"
 #include "clang/Serialization/ASTBitCodes.h"
 #include "clang/Serialization/ASTRecordReader.h"
@@ -57,12 +56,10 @@
 #include "clang/Serialization/ModuleFile.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/Bitstream/BitstreamReader.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/SaveAndRestore.h"
 #include <algorithm>
diff --git a/clang/lib/Serialization/ASTReaderStmt.cpp 
b/clang/lib/Serialization/ASTReaderStmt.cpp
index f327a7b355868..f1bb33a19107e 100644
--- a/clang/lib/Serialization/ASTReaderStmt.cpp
+++ b/clang/lib/Serialization/ASTReaderStmt.cpp
@@ -41,23 +41,18 @@
 #include "clang/Basic/CapturedStmt.h"
 #include "clang/Basic/ExpressionTraits.h"
 #include "clang/Basic/LLVM.h"
-#include "clang/Basic/Lambda.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/OpenMPKinds.h"
-#include "clang/Basic/OperatorKinds.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/Specifiers.h"
 #include "clang/Basic/TypeTraits.h"
 #include "clang/Lex/Token.h"
 #include "clang/Serialization/ASTBitCodes.h"
 #include "clang/Serialization/ASTRecordReader.h"
-#include "llvm/ADT/BitmaskEnum.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Bitstream/BitstreamReader.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/ErrorHandling.h"
 #include <algorithm>
 #include <cassert>
diff --git a/clang/lib/Serialization/ASTWriter.cpp 
b/clang/lib/Serialization/ASTWriter.cpp
index cc9916a75d4b4..46bfdb2a92d1d 100644
--- a/clang/lib/Serialization/ASTWriter.cpp
+++ b/clang/lib/Serialization/ASTWriter.cpp
@@ -81,27 +81,21 @@
 #include "clang/Serialization/SerializationDiagnostic.h"
 #include "llvm/ADT/APFloat.h"
 #include "llvm/ADT/APInt.h"
-#include "llvm/ADT/APSInt.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DenseSet.h"
-#include "llvm/ADT/Hashing.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/ScopeExit.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Bitstream/BitCodes.h"
 #include "llvm/Bitstream/BitstreamWriter.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/Compression.h"
 #include "llvm/Support/DJB.h"
-#include "llvm/Support/Endian.h"
 #include "llvm/Support/EndianStream.h"
-#include "llvm/Support/Error.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/LEB128.h"
 #include "llvm/Support/MemoryBuffer.h"
diff --git a/clang/lib/Serialization/ASTWriterStmt.cpp 
b/clang/lib/Serialization/ASTWriterStmt.cpp
index 0401be33e8930..fc24b76b79def 100644
--- a/clang/lib/Serialization/ASTWriterStmt.cpp
+++ b/clang/lib/Serialization/ASTWriterStmt.cpp
@@ -18,7 +18,6 @@
 #include "clang/AST/DeclTemplate.h"
 #include "clang/AST/ExprOpenMP.h"
 #include "clang/AST/StmtVisitor.h"
-#include "clang/Lex/Token.h"
 #include "clang/Serialization/ASTReader.h"
 #include "clang/Serialization/ASTRecordWriter.h"
 #include "llvm/Bitstream/BitstreamWriter.h"
diff --git a/clang/lib/Serialization/ModuleManager.cpp 
b/clang/lib/Serialization/ModuleManager.cpp
index fa9533b7efd78..482c17649ed55 100644
--- a/clang/lib/Serialization/ModuleManager.cpp
+++ b/clang/lib/Serialization/ModuleManager.cpp
@@ -27,13 +27,11 @@
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/iterator.h"
-#include "llvm/Support/Chrono.h"
 #include "llvm/Support/DOTGraphTraits.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/GraphWriter.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/VirtualFileSystem.h"
-#include <algorithm>
 #include <cassert>
 #include <memory>
 #include <string>

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