[NFC] Minimize header includes (#66339)

Minimize the headers included in header files to reduce the number of
files that need recompiled after a change.

3 files changed, 17 insertions, 4 deletions

diff --git a/clang/lib/Basic/Attributes.cpp b/clang/lib/Basic/Attributes.cpp
index 1308e2d..bb49521 100644
--- a/clang/lib/Basic/Attributes.cpp
+++ b/clang/lib/Basic/Attributes.cpp
@@ -1,8 +1,22 @@
+//===--- Attributes.cpp ---------------------------------------------------===//
+//
+// 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 implements the AttributeCommonInfo interface.
+//
+//===----------------------------------------------------------------------===//
+
 #include "clang/Basic/Attributes.h"
 #include "clang/Basic/AttrSubjectMatchRules.h"
-#include "clang/Basic/AttributeCommonInfo.h"
 #include "clang/Basic/IdentifierTable.h"
+#include "clang/Basic/LangOptions.h"
 #include "clang/Basic/ParsedAttrInfo.h"
+#include "clang/Basic/TargetInfo.h"
+
 using namespace clang;
 
 static int hasAttributeImpl(AttributeCommonInfo::Syntax Syntax, StringRef Name,
diff --git a/clang/lib/Basic/IdentifierTable.cpp b/clang/lib/Basic/IdentifierTable.cpp
index afb3026..e5599d5 100644
--- a/clang/lib/Basic/IdentifierTable.cpp
+++ b/clang/lib/Basic/IdentifierTable.cpp
@@ -25,7 +25,6 @@
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Allocator.h"
-#include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 #include <cassert>
 #include <cstdio>
@@ -52,8 +51,7 @@ namespace {
 
 /// A simple identifier lookup iterator that represents an
 /// empty sequence of identifiers.
-class EmptyLookupIterator : public IdentifierIterator
-{
+class EmptyLookupIterator : public IdentifierIterator {
 public:
   StringRef Next() override { return StringRef(); }
 };
diff --git a/clang/lib/Parse/ParseStmt.cpp b/clang/lib/Parse/ParseStmt.cpp
index fb883c0..2531147 100644
--- a/clang/lib/Parse/ParseStmt.cpp
+++ b/clang/lib/Parse/ParseStmt.cpp
@@ -14,6 +14,7 @@
 #include "clang/AST/PrettyDeclStackTrace.h"
 #include "clang/Basic/Attributes.h"
 #include "clang/Basic/PrettyStackTrace.h"
+#include "clang/Basic/TargetInfo.h"
 #include "clang/Basic/TokenKinds.h"
 #include "clang/Parse/LoopHint.h"
 #include "clang/Parse/Parser.h"