HB is *the* code janitor.

llvm-svn: 25031
diff --git a/llvm/lib/CodeGen/RegAllocLinearScan.cpp b/llvm/lib/CodeGen/RegAllocLinearScan.cpp
index 815f474..fbf6692 100644
--- a/llvm/lib/CodeGen/RegAllocLinearScan.cpp
+++ b/llvm/lib/CodeGen/RegAllocLinearScan.cpp
@@ -30,6 +30,7 @@
 #include <cmath>
 #include <set>
 #include <queue>
+#include <memory>
 using namespace llvm;
 
 namespace {