1 files changed, 15 insertions, 5 deletions
diff --git a/deps/v8/src/compiler/scheduler.h b/deps/v8/src/compiler/scheduler.h
index 9da0b6daa4..269c271ae5 100644
--- a/deps/v8/src/compiler/scheduler.h
+++ b/deps/v8/src/compiler/scheduler.h
@@ -5,8 +5,8 @@
 #ifndef V8_COMPILER_SCHEDULER_H_
 #define V8_COMPILER_SCHEDULER_H_
 
-#include "src/v8.h"
-
+#include "src/base/flags.h"
+#include "src/compiler/node.h"
 #include "src/compiler/opcodes.h"
 #include "src/compiler/schedule.h"
 #include "src/compiler/zone-pool.h"
@@ -16,17 +16,24 @@ namespace v8 {
 namespace internal {
 namespace compiler {
 
+// Forward declarations.
 class CFGBuilder;
 class ControlEquivalence;
+class Graph;
 class SpecialRPONumberer;
 
+
 // Computes a schedule from a graph, placing nodes into basic blocks and
 // ordering the basic blocks in the special RPO order.
 class Scheduler {
  public:
+  // Flags that control the mode of operation.
+  enum Flag { kNoFlags = 0u, kSplitNodes = 1u << 1 };
+  typedef base::Flags<Flag> Flags;
+
   // The complete scheduling algorithm. Creates a new schedule and places all
   // nodes from the graph into it.
-  static Schedule* ComputeSchedule(Zone* zone, Graph* graph);
+  static Schedule* ComputeSchedule(Zone* zone, Graph* graph, Flags flags);
 
   // Compute the RPO of blocks in an existing schedule.
   static BasicBlockVector* ComputeSpecialRPO(Zone* zone, Schedule* schedule);
@@ -56,6 +63,7 @@ class Scheduler {
   Zone* zone_;
   Graph* graph_;
   Schedule* schedule_;
+  Flags flags_;
   NodeVectorVector scheduled_nodes_;     // Per-block list of nodes in reverse.
   NodeVector schedule_root_nodes_;       // Fixed root nodes seed the worklist.
   ZoneQueue<Node*> schedule_queue_;      // Worklist of schedulable nodes.
@@ -64,7 +72,7 @@ class Scheduler {
   SpecialRPONumberer* special_rpo_;      // Special RPO numbering of blocks.
   ControlEquivalence* equivalence_;      // Control dependence equivalence.
 
-  Scheduler(Zone* zone, Graph* graph, Schedule* schedule);
+  Scheduler(Zone* zone, Graph* graph, Schedule* schedule, Flags flags);
 
   inline SchedulerData DefaultSchedulerData();
   inline SchedulerData* GetData(Node* node);
@@ -76,7 +84,6 @@ class Scheduler {
   void IncrementUnscheduledUseCount(Node* node, int index, Node* from);
   void DecrementUnscheduledUseCount(Node* node, int index, Node* from);
 
-  BasicBlock* GetCommonDominator(BasicBlock* b1, BasicBlock* b2);
   void PropagateImmediateDominators(BasicBlock* block);
 
   // Phase 1: Build control-flow graph.
@@ -107,6 +114,9 @@ class Scheduler {
   void MovePlannedNodes(BasicBlock* from, BasicBlock* to);
 };
 
+
+DEFINE_OPERATORS_FOR_FLAGS(Scheduler::Flags)
+
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8