Add new -d option to tblgen. It writes a make(1)-style dependency file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132395 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGLexer.h b/utils/TableGen/TGLexer.h
index e1aa5a7..c2a6453 100644
--- a/utils/TableGen/TGLexer.h
+++ b/utils/TableGen/TGLexer.h
@@ -16,6 +16,7 @@
 
 #include "llvm/Support/DataTypes.h"
 #include <string>
+#include <vector>
 #include <cassert>
 
 namespace llvm {
@@ -71,6 +72,8 @@
   /// CurBuffer - This is the current buffer index we're lexing from as managed
   /// by the SourceMgr object.
   int CurBuffer;
+  /// Dependencies - This is the list of all included files.
+  std::vector<std::string> Dependencies;
   
 public:
   TGLexer(SourceMgr &SrcMgr);
@@ -79,6 +82,10 @@
   tgtok::TokKind Lex() {
     return CurCode = LexToken();
   }
+
+  const std::vector<std::string> &getDependencies() const {
+    return Dependencies;
+  }
   
   tgtok::TokKind getCode() const { return CurCode; }