[Frontend] Remove unused includes (NFC) (#142256)

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.

Author: kazutakahirata

clang/lib/Frontend/ASTConsumers.cpp

@@ -11,15 +11,12 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Frontend/ASTConsumers.h"
-#include "clang/AST/AST.h"
 #include "clang/AST/ASTConsumer.h"
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/PrettyPrinter.h"
 #include "clang/AST/RecordLayout.h"
 #include "clang/AST/RecursiveASTVisitor.h"
 #include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/SourceManager.h"
-#include "llvm/Support/Path.h"
 #include "llvm/Support/Timer.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace clang;

clang/lib/Frontend/ASTUnit.cpp

@@ -57,10 +57,8 @@
 #include "clang/Sema/CodeCompleteOptions.h"
 #include "clang/Sema/Sema.h"
 #include "clang/Sema/SemaCodeCompletion.h"
-#include "clang/Serialization/ASTBitCodes.h"
 #include "clang/Serialization/ASTReader.h"
 #include "clang/Serialization/ASTWriter.h"
-#include "clang/Serialization/ContinuousRangeMap.h"
 #include "clang/Serialization/ModuleCache.h"
 #include "clang/Serialization/ModuleFile.h"
 #include "clang/Serialization/PCHContainerOperations.h"
@@ -77,12 +75,10 @@
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/Bitstream/BitstreamWriter.h"
 #include "llvm/Support/Allocator.h"
-#include "llvm/Support/Casting.h"
 #include "llvm/Support/CrashRecoveryContext.h"
 #include "llvm/Support/DJB.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/ErrorOr.h"
-#include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SaveAndRestore.h"
 #include "llvm/Support/Timer.h"

clang/lib/Frontend/CompilerInstance.cpp

@@ -53,7 +53,6 @@
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
-#include "llvm/Support/Program.h"
 #include "llvm/Support/Signals.h"
 #include "llvm/Support/TimeProfiler.h"
 #include "llvm/Support/Timer.h"

clang/lib/Frontend/CompilerInvocation.cpp

@@ -24,34 +24,28 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/TargetOptions.h"
 #include "clang/Basic/Version.h"
-#include "clang/Basic/Visibility.h"
 #include "clang/Basic/XRayInstr.h"
 #include "clang/Config/config.h"
 #include "clang/Driver/Driver.h"
-#include "clang/Driver/DriverDiagnostic.h"
 #include "clang/Driver/Options.h"
 #include "clang/Frontend/CommandLineSourceLoc.h"
 #include "clang/Frontend/DependencyOutputOptions.h"
 #include "clang/Frontend/FrontendDiagnostic.h"
 #include "clang/Frontend/FrontendOptions.h"
-#include "clang/Frontend/FrontendPluginRegistry.h"
 #include "clang/Frontend/MigratorOptions.h"
 #include "clang/Frontend/PreprocessorOutputOptions.h"
 #include "clang/Frontend/TextDiagnosticBuffer.h"
 #include "clang/Frontend/Utils.h"
 #include "clang/Lex/HeaderSearchOptions.h"
 #include "clang/Lex/PreprocessorOptions.h"
-#include "clang/Sema/CodeCompleteOptions.h"
 #include "clang/Serialization/ASTBitCodes.h"
 #include "clang/Serialization/ModuleFileExtension.h"
 #include "clang/StaticAnalyzer/Core/AnalyzerOptions.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/CachedHashString.h"
 #include "llvm/ADT/FloatingPointMode.h"
-#include "llvm/ADT/Hashing.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
@@ -87,7 +81,6 @@
 #include "llvm/TargetParser/Host.h"
 #include "llvm/TargetParser/Triple.h"
 #include <algorithm>
-#include <atomic>
 #include <cassert>
 #include <cstddef>
 #include <cstring>

clang/lib/Frontend/DiagnosticRenderer.cpp

@@ -18,7 +18,6 @@
 #include "clang/Lex/Lexer.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/raw_ostream.h"

clang/lib/Frontend/FrontendActions.cpp

@@ -30,7 +30,6 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/Path.h"
 #include "llvm/Support/YAMLTraits.h"
 #include "llvm/Support/raw_ostream.h"
 #include <memory>

clang/lib/Frontend/InitPreprocessor.cpp

@@ -10,7 +10,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "clang/Basic/FileManager.h"
 #include "clang/Basic/HLSLRuntime.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/SourceManager.h"

clang/lib/Frontend/LogDiagnosticPrinter.cpp

@@ -8,10 +8,8 @@
 
 #include "clang/Frontend/LogDiagnosticPrinter.h"
 #include "clang/Basic/DiagnosticOptions.h"
-#include "clang/Basic/FileManager.h"
 #include "clang/Basic/PlistSupport.h"
 #include "clang/Basic/SourceManager.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace clang;

clang/lib/Frontend/ModuleDependencyCollector.cpp

@@ -14,7 +14,6 @@
 #include "clang/Frontend/Utils.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Serialization/ASTReader.h"
-#include "llvm/ADT/iterator_range.h"
 #include "llvm/Config/llvm-config.h"
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Path.h"

clang/lib/Frontend/PrintPreprocessedOutput.cpp

@@ -22,7 +22,6 @@
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Lex/TokenConcatenation.h"
 #include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"