[Basic] Remove unused includes (NFC) (#142295)

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/Basic/Attributes.cpp

@@ -18,7 +18,6 @@
 #include "clang/Basic/SimpleTypoCorrection.h"
 #include "clang/Basic/TargetInfo.h"
 
-#include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringSwitch.h"
 
 using namespace clang;

clang/lib/Basic/CodeGenOptions.cpp

@@ -7,7 +7,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Basic/CodeGenOptions.h"
-#include <string.h>
 
 namespace clang {
 

clang/lib/Basic/Cuda.cpp

@@ -1,6 +1,5 @@
 #include "clang/Basic/Cuda.h"
 
-#include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/VersionTuple.h"

clang/lib/Basic/Diagnostic.cpp

@@ -18,13 +18,11 @@
 #include "clang/Basic/DiagnosticIDs.h"
 #include "clang/Basic/DiagnosticOptions.h"
 #include "clang/Basic/IdentifierTable.h"
-#include "clang/Basic/PartialDiagnostic.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Basic/Specifiers.h"
 #include "clang/Basic/TokenKinds.h"
 #include "llvm/ADT/IntrusiveRefCntPtr.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringMap.h"
@@ -42,7 +40,6 @@
 #include <cstddef>
 #include <cstdint>
 #include <cstring>
-#include <limits>
 #include <memory>
 #include <string>
 #include <utility>

clang/lib/Basic/DiagnosticIDs.cpp

@@ -20,7 +20,6 @@
 #include "llvm/ADT/StringTable.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/Path.h"
 #include <map>
 #include <optional>
 using namespace clang;

clang/lib/Basic/ExpressionTraits.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Basic/ExpressionTraits.h"
-#include "llvm/Support/ErrorHandling.h"
 #include <cassert>
 using namespace clang;
 

clang/lib/Basic/FileEntry.cpp

@@ -12,7 +12,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Basic/FileEntry.h"
-#include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/VirtualFileSystem.h"
 
 using namespace clang;

clang/lib/Basic/FileManager.cpp

@@ -18,7 +18,6 @@
 
 #include "clang/Basic/FileManager.h"
 #include "clang/Basic/FileSystemStatCache.h"
-#include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Config/llvm-config.h"
@@ -26,7 +25,6 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/raw_ostream.h"
-#include <algorithm>
 #include <cassert>
 #include <climits>
 #include <cstdint>

clang/lib/Basic/FileSystemStatCache.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Basic/FileSystemStatCache.h"
-#include "llvm/Support/Chrono.h"
 #include "llvm/Support/ErrorOr.h"
 #include "llvm/Support/Path.h"
 #include "llvm/Support/VirtualFileSystem.h"

clang/lib/Basic/IdentifierTable.cpp

@@ -21,7 +21,6 @@
 #include "clang/Basic/TokenKinds.h"
 #include "llvm/ADT/DenseMapInfo.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Allocator.h"

clang/lib/Basic/Module.cpp

@@ -25,7 +25,6 @@
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
-#include <algorithm>
 #include <cassert>
 #include <functional>
 #include <string>

clang/lib/Basic/ProfileList.cpp

@@ -16,7 +16,6 @@
 #include "clang/Basic/SourceManager.h"
 #include "llvm/Support/SpecialCaseList.h"
 
-#include "llvm/Support/raw_ostream.h"
 #include <optional>
 
 using namespace clang;

clang/lib/Basic/Sanitizers.cpp

@@ -12,10 +12,8 @@
 
 #include "clang/Basic/Sanitizers.h"
 #include "llvm/ADT/Hashing.h"
-#include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/Format.h"
-#include "llvm/Support/MathExtras.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
 #include <cmath>

clang/lib/Basic/Sarif.cpp

@@ -17,7 +17,6 @@
 #include "clang/Basic/Sarif.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
-#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringRef.h"

clang/lib/Basic/SourceLocation.cpp

@@ -16,9 +16,7 @@
 #include "clang/Basic/SourceManager.h"
 #include "llvm/ADT/DenseMapInfo.h"
 #include "llvm/ADT/FoldingSet.h"
-#include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Compiler.h"
-#include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/raw_ostream.h"
 #include <cassert>
 #include <string>

clang/lib/Basic/SourceManager.cpp

@@ -24,7 +24,6 @@
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/Allocator.h"
-#include "llvm/Support/AutoConvert.h"
 #include "llvm/Support/Capacity.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Endian.h"

clang/lib/Basic/TargetID.cpp

@@ -9,7 +9,6 @@
 #include "clang/Basic/TargetID.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallSet.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/TargetParser/TargetParser.h"
 #include "llvm/TargetParser/Triple.h"
 #include <map>

clang/lib/Basic/Targets/AArch64.cpp

@@ -17,7 +17,6 @@
 #include "clang/Basic/TargetInfo.h"
 #include "llvm/ADT/APSInt.h"
 #include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/TargetParser/AArch64TargetParser.h"
 #include "llvm/TargetParser/ARMTargetParserCommon.h"

clang/lib/Basic/Targets/AMDGPU.cpp

@@ -12,7 +12,6 @@
 
 #include "AMDGPU.h"
 #include "clang/Basic/Builtins.h"
-#include "clang/Basic/CodeGenOptions.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/LangOptions.h"
 #include "clang/Basic/MacroBuilder.h"

clang/lib/Basic/Targets/ARC.cpp

@@ -13,7 +13,6 @@
 #include "ARC.h"
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/MacroBuilder.h"
-#include "clang/Basic/TargetBuiltins.h"
 
 using namespace clang;
 using namespace clang::targets;

clang/lib/Basic/Targets/ARM.cpp

@@ -14,7 +14,6 @@
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/TargetBuiltins.h"
-#include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/TargetParser/ARMTargetParser.h"

clang/lib/Basic/Targets/BPF.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "BPF.h"
-#include "Targets.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/TargetBuiltins.h"
 #include "llvm/ADT/StringRef.h"

clang/lib/Basic/Targets/Hexagon.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "Hexagon.h"
-#include "Targets.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/TargetBuiltins.h"
 #include "llvm/ADT/StringSwitch.h"

clang/lib/Basic/Targets/LoongArch.cpp

@@ -14,7 +14,6 @@
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/TargetBuiltins.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/TargetParser/LoongArchTargetParser.h"
 
 using namespace clang;

clang/lib/Basic/Targets/M68k.cpp

@@ -13,8 +13,6 @@
 #include "M68k.h"
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/Diagnostic.h"
-#include "clang/Basic/TargetBuiltins.h"
-#include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/TargetParser/TargetParser.h"

clang/lib/Basic/Targets/Mips.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "Mips.h"
-#include "Targets.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/TargetBuiltins.h"

clang/lib/Basic/Targets/NVPTX.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "NVPTX.h"
-#include "Targets.h"
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/TargetBuiltins.h"

clang/lib/Basic/Targets/SPIR.cpp

@@ -12,7 +12,6 @@
 
 #include "SPIR.h"
 #include "AMDGPU.h"
-#include "Targets.h"
 #include "clang/Basic/MacroBuilder.h"
 #include "clang/Basic/TargetBuiltins.h"
 #include "llvm/TargetParser/TargetParser.h"

clang/lib/Basic/Targets/X86.cpp

@@ -14,7 +14,6 @@
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/TargetBuiltins.h"
-#include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/TargetParser/X86TargetParser.h"

clang/lib/Basic/Targets/Xtensa.cpp

@@ -15,7 +15,6 @@
 #include "Xtensa.h"
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/MacroBuilder.h"
-#include "clang/Basic/TargetBuiltins.h"
 
 using namespace clang;
 using namespace clang::targets;

clang/lib/Basic/TypeTraits.cpp

@@ -11,7 +11,6 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Basic/TypeTraits.h"
-#include "llvm/Support/ErrorHandling.h"
 #include <cassert>
 #include <cstring>
 using namespace clang;