--- a/hotspot/src/share/vm/c1/c1_IR.hpp	Mon May 02 12:14:26 2016 -0400
+++ b/hotspot/src/share/vm/c1/c1_IR.hpp	Tue May 03 22:45:27 2016 +0200
@@ -151,7 +151,7 @@
   bool          _wrote_volatile;                 // has written volatile field
   BlockBegin*   _start;                          // the start block, successsors are method entries
 
-  BitMap        _requires_phi_function;          // bit is set if phi functions at loop headers are necessary for a local variable
+  ResourceBitMap _requires_phi_function;         // bit is set if phi functions at loop headers are necessary for a local variable
 
   // helper functions
   BlockBegin* build_graph(Compilation* compilation, int osr_bci);