Add #includes neccesary since they were removed from .h files

llvm-svn: 1675
diff --git a/llvm/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp b/llvm/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
index b66e6ef..b5f9275 100644
--- a/llvm/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
+++ b/llvm/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
@@ -1,4 +1,8 @@
 #include "llvm/CodeGen/LiveRangeInfo.h"
+#include "llvm/CodeGen/RegClass.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Method.h"
 #include <iostream>
 using std::cerr;