[PBQP] Clarify ambiguous-looking typedef.

This was causing an error on the hexagon bots.

llvm-svn: 220689

diff --git a/llvm/include/llvm/CodeGen/RegAllocPBQP.h b/llvm/include/llvm/CodeGen/RegAllocPBQP.h
index 635fa9d..9a5bd9f 100644 (file)
--- a/llvm/include/llvm/CodeGen/RegAllocPBQP.h
+++ b/llvm/include/llvm/CodeGen/RegAllocPBQP.h
@@ -175,7 +175,7 @@ private:
 /// \brief Holds solver state and other metadata relevant to each PBQP RA node.
 class NodeMetadata {
 public:
-  typedef AllowedRegVector AllowedRegVector;
+  typedef RegAlloc::AllowedRegVector AllowedRegVector;
 
   typedef enum { Unprocessed,
                  OptimallyReducible,