Move LiveIntervals.h up to be the first included header


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11721 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index b6a6613..024ff12 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -16,6 +16,7 @@
 //===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "liveintervals"
+#include "LiveIntervals.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/CodeGen/LiveVariables.h"
 #include "llvm/CodeGen/MachineFrameInfo.h"
@@ -30,7 +31,6 @@
 #include "Support/Debug.h"
 #include "Support/Statistic.h"
 #include "Support/STLExtras.h"
-#include "LiveIntervals.h"
 #include <cmath>
 #include <iostream>
 #include <limits>