diff -r 57e7e1d3ade8 -r 55892792936f hotspot/src/share/vm/opto/block.hpp
--- a/hotspot/src/share/vm/opto/block.hpp	Wed Sep 16 20:33:16 2015 +0200
+++ b/hotspot/src/share/vm/opto/block.hpp	Wed Sep 16 13:16:17 2015 -0700
@@ -37,6 +37,7 @@
 class Matcher;
 class RootNode;
 class VectorSet;
+class PhaseChaitin;
 struct Tarjan;
 
 //------------------------------Block_Array------------------------------------
@@ -383,6 +384,12 @@
   // Arena for the blocks to be stored in
   Arena* _block_arena;
 
+  // Info used for scheduling
+  PhaseChaitin* _regalloc;
+
+  // Register pressure heuristic used?
+  bool _scheduling_for_pressure;
+
   // The matcher for this compilation
   Matcher& _matcher;
 
@@ -433,12 +440,14 @@
   // to late. Helper for schedule_late.
   Block* hoist_to_cheaper_block(Block* LCA, Block* early, Node* self);
 
-  bool schedule_local(Block* block, GrowableArray<int>& ready_cnt, VectorSet& next_call);
+  bool schedule_local(Block* block, GrowableArray<int>& ready_cnt, VectorSet& next_call, intptr_t* recacl_pressure_nodes);
   void set_next_call(Block* block, Node* n, VectorSet& next_call);
   void needed_for_next_call(Block* block, Node* this_call, VectorSet& next_call);
 
   // Perform basic-block local scheduling
-  Node* select(Block* block, Node_List& worklist, GrowableArray<int>& ready_cnt, VectorSet& next_call, uint sched_slot);
+  Node* select(Block* block, Node_List& worklist, GrowableArray<int>& ready_cnt, VectorSet& next_call, uint sched_slot,
+               intptr_t* recacl_pressure_nodes);
+  void adjust_register_pressure(Node* n, Block* block, intptr_t *recalc_pressure_nodes, bool finalize_mode);
 
   // Schedule a call next in the block
   uint sched_call(Block* block, uint node_cnt, Node_List& worklist, GrowableArray<int>& ready_cnt, MachCallNode* mcall, VectorSet& next_call);