TGParser.h - cleanup includes and forward declarations. NFC.

Replace Twine.h/SourceMgr.h includes with forward declarations and include in TGParser.cpp
Remove forward declarations we already have to include in Record.h

Author: RKSimon

llvm/lib/TableGen/TGParser.cpp

@@ -15,12 +15,13 @@
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
 #include "llvm/Config/llvm-config.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
-#include "llvm/TableGen/Record.h"
+#include "llvm/Support/SourceMgr.h"
 #include <algorithm>
 #include <cassert>
 #include <cstdint>

llvm/lib/TableGen/TGParser.h

@@ -14,18 +14,13 @@
 #define LLVM_LIB_TABLEGEN_TGPARSER_H
 
 #include "TGLexer.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Support/SourceMgr.h"
 #include "llvm/TableGen/Error.h"
 #include "llvm/TableGen/Record.h"
 #include <map>
 
 namespace llvm {
-  class Record;
-  class RecordVal;
-  class RecordKeeper;
-  class RecTy;
-  class Init;
+  class SourceMgr;
+  class Twine;
   struct ForeachLoop;
   struct MultiClass;
   struct SubClassReference;