[NFC] Header cleanup

Removed some unused headers, replaced some headers with forward class declarations.

Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'

Patch by Eugene Kosov <claprix@yandex.ru>

Differential Revision: http://reviews.llvm.org/D19219

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266595

6 files changed, 6 insertions, 3 deletions

diff --git a/llvm/lib/Support/ConvertUTFWrapper.cpp b/llvm/lib/Support/ConvertUTFWrapper.cpp
index f3cef5240f6..217cedb24df 100644
--- a/llvm/lib/Support/ConvertUTFWrapper.cpp
+++ b/llvm/lib/Support/ConvertUTFWrapper.cpp
@@ -8,6 +8,8 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Support/ConvertUTF.h"
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/StringRef.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/SwapByteOrder.h"
 #include <string>
diff --git a/llvm/lib/Support/JamCRC.cpp b/llvm/lib/Support/JamCRC.cpp
index bc21c917d55..17c55f565e0 100644
--- a/llvm/lib/Support/JamCRC.cpp
+++ b/llvm/lib/Support/JamCRC.cpp
@@ -18,6 +18,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Support/JamCRC.h"
+#include "llvm/ADT/ArrayRef.h"
 
 using namespace llvm;
 
diff --git a/llvm/lib/Support/Locale.cpp b/llvm/lib/Support/Locale.cpp
index 53bc0e36d83..e24a28be430 100644
--- a/llvm/lib/Support/Locale.cpp
+++ b/llvm/lib/Support/Locale.cpp
@@ -1,5 +1,6 @@
-#include "llvm/Config/llvm-config.h"
 #include "llvm/Support/Locale.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Config/llvm-config.h"
 #include "llvm/Support/Unicode.h"
 
 namespace llvm {
diff --git a/llvm/lib/Support/ManagedStatic.cpp b/llvm/lib/Support/ManagedStatic.cpp
index 9868207b14f..b8fb2841e52 100644
--- a/llvm/lib/Support/ManagedStatic.cpp
+++ b/llvm/lib/Support/ManagedStatic.cpp
@@ -14,7 +14,6 @@
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Config/config.h"
 #include "llvm/Support/Atomic.h"
-#include "llvm/Support/Compiler.h"
 #include "llvm/Support/Mutex.h"
 #include "llvm/Support/MutexGuard.h"
 #include <cassert>
diff --git a/llvm/lib/Support/SHA1.cpp b/llvm/lib/Support/SHA1.cpp
index 980c3bbffac..a461d1ebc93 100644
--- a/llvm/lib/Support/SHA1.cpp
+++ b/llvm/lib/Support/SHA1.cpp
@@ -15,6 +15,7 @@
 
 #include "llvm/Support/Host.h"
 #include "llvm/Support/SHA1.h"
+#include "llvm/ADT/ArrayRef.h"
 using namespace llvm;
 
 #include <stdint.h>
diff --git a/llvm/lib/Support/Windows/WindowsSupport.h b/llvm/lib/Support/Windows/WindowsSupport.h
index 60490f26643..a28c79f40da 100644
--- a/llvm/lib/Support/Windows/WindowsSupport.h
+++ b/llvm/lib/Support/Windows/WindowsSupport.h
@@ -45,7 +45,6 @@
 #include <wincrypt.h>
 #include <cassert>
 #include <string>
-#include <vector>
 
 /// Determines if the program is running on Windows 8 or newer. This
 /// reimplements one of the helpers in the Windows 8.1 SDK, which are intended