Purge unused includes throughout libSupport.

NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232976 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/Compression.h

@@ -14,12 +14,10 @@
 #ifndef LLVM_SUPPORT_COMPRESSION_H
 #define LLVM_SUPPORT_COMPRESSION_H
 
-#include "llvm/ADT/SmallVector.h"
 #include "llvm/Support/DataTypes.h"
-#include <memory>
 
 namespace llvm {
-
+template <typename T> class SmallVectorImpl;
 class StringRef;
 
 namespace zlib {

include/llvm/Support/CrashRecoveryContext.h

@@ -14,8 +14,6 @@
 #include <string>
 
 namespace llvm {
-class StringRef;
-
 class CrashRecoveryContextCleanup;
 
 /// \brief Crash recovery helper object.

include/llvm/Support/DataExtractor.h

@@ -10,7 +10,6 @@
 #ifndef LLVM_SUPPORT_DATAEXTRACTOR_H
 #define LLVM_SUPPORT_DATAEXTRACTOR_H
 
-#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/DataTypes.h"
 

include/llvm/Support/Debug.h

@@ -28,9 +28,8 @@
 #ifndef LLVM_SUPPORT_DEBUG_H
 #define LLVM_SUPPORT_DEBUG_H
 
-#include "llvm/Support/raw_ostream.h"
-
 namespace llvm {
+class raw_ostream;
 
 #ifndef NDEBUG
 /// DebugFlag - This boolean is set to true if the '-debug' command line option

include/llvm/Support/GraphWriter.h

@@ -24,10 +24,9 @@
 #define LLVM_SUPPORT_GRAPHWRITER_H
 
 #include "llvm/ADT/GraphTraits.h"
+#include "llvm/ADT/Twine.h"
 #include "llvm/Support/DOTGraphTraits.h"
-#include "llvm/Support/Path.h"
 #include "llvm/Support/raw_ostream.h"
-#include <cassert>
 #include <vector>
 
 namespace llvm {

include/llvm/Support/MemoryBuffer.h

@@ -17,11 +17,9 @@
 #include "llvm-c/Support.h"
 #include "llvm/ADT/Twine.h"
 #include "llvm/Support/CBindingWrapping.h"
-#include "llvm/Support/Compiler.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/ErrorOr.h"
 #include <memory>
-#include <system_error>
 
 namespace llvm {
 class MemoryBufferRef;

include/llvm/Support/Program.h

@@ -16,10 +16,11 @@
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/Support/ErrorOr.h"
-#include "llvm/Support/Path.h"
 #include <system_error>
 
 namespace llvm {
+class StringRef;
+
 namespace sys {
 
   /// This is the OS-specific separator for PATH like environment variables:

include/llvm/Support/Regex.h

@@ -17,7 +17,6 @@
 #ifndef LLVM_SUPPORT_REGEX_H
 #define LLVM_SUPPORT_REGEX_H
 
-#include "llvm/Support/Compiler.h"
 #include <string>
 
 struct llvm_regex;

include/llvm/Support/Signals.h

@@ -15,11 +15,11 @@
 #ifndef LLVM_SUPPORT_SIGNALS_H
 #define LLVM_SUPPORT_SIGNALS_H
 
-#include "llvm/Support/Path.h"
-#include <cstdio>
+#include <string>
 
 namespace llvm {
-  class raw_ostream;
+class StringRef;
+class raw_ostream;
 
 namespace sys {
 

include/llvm/Support/StreamingMemoryObject.h

@@ -14,7 +14,6 @@
 #include "llvm/Support/DataStream.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/MemoryObject.h"
-#include <cassert>
 #include <memory>
 #include <vector>
 

include/llvm/Support/StringPool.h

@@ -30,9 +30,7 @@
 #define LLVM_SUPPORT_STRINGPOOL_H
 
 #include "llvm/ADT/StringMap.h"
-#include "llvm/Support/Compiler.h"
 #include <cassert>
-#include <new>
 
 namespace llvm {
 

include/llvm/Support/SystemUtils.h

@@ -15,8 +15,6 @@
 #ifndef LLVM_SUPPORT_SYSTEMUTILS_H
 #define LLVM_SUPPORT_SYSTEMUTILS_H
 
-#include <string>
-
 namespace llvm {
   class raw_ostream;
 

include/llvm/Support/TargetRegistry.h

@@ -28,8 +28,6 @@
 
 namespace llvm {
   class AsmPrinter;
-  class Module;
-  class MCAssembler;
   class MCAsmBackend;
   class MCAsmInfo;
   class MCAsmParser;

include/llvm/Support/Timer.h

@@ -11,7 +11,6 @@
 #define LLVM_SUPPORT_TIMER_H
 
 #include "llvm/ADT/StringRef.h"
-#include "llvm/Support/Compiler.h"
 #include "llvm/Support/DataTypes.h"
 #include <cassert>
 #include <string>

include/llvm/Support/YAMLParser.h

@@ -38,19 +38,18 @@
 #ifndef LLVM_SUPPORT_YAMLPARSER_H
 #define LLVM_SUPPORT_YAMLPARSER_H
 
-#include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/Allocator.h"
-#include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SMLoc.h"
 #include <limits>
 #include <map>
 #include <utility>
 
 namespace llvm {
+class MemoryBufferRef;
 class SourceMgr;
-class raw_ostream;
 class Twine;
+class raw_ostream;
 
 namespace yaml {
 

include/llvm/Support/raw_ostream.h

@@ -16,7 +16,6 @@
 
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
-#include "llvm/Support/Compiler.h"
 #include "llvm/Support/DataTypes.h"
 #include <system_error>