Add #include to get alloca, patch by Kenneth Boyd!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57147 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/PBQP.cpp b/lib/CodeGen/PBQP.cpp
index 6b21105..d4d1098 100644
--- a/lib/CodeGen/PBQP.cpp
+++ b/lib/CodeGen/PBQP.cpp
@@ -18,6 +18,7 @@
 #include <cstring>
 
 #include "PBQP.h"
+#include "llvm/Config/alloca.h"
 
 namespace llvm {