VM: Re-format to use at most one newline between functions

runtime/vm/flow_graph_allocator.h

Index: runtime/vm/flow_graph_allocator.h
diff --git a/runtime/vm/flow_graph_allocator.h b/runtime/vm/flow_graph_allocator.h
index a1d724239043c3656b7657cc1b0544358c504d6d..42ed4807f1d47ac9e5b4bd77dad5747747ecae8c 100644
--- a/runtime/vm/flow_graph_allocator.h
+++ b/runtime/vm/flow_graph_allocator.h
@@ -18,7 +18,6 @@ class LiveRange;
 class UseInterval;
 class UsePosition;
 
-
 class ReachingDefs : public ValueObject {
  public:
   explicit ReachingDefs(const FlowGraph& flow_graph)
@@ -34,7 +33,6 @@ class ReachingDefs : public ValueObject {
   GrowableArray<PhiInstr*> phis_;
 };
 
-
 class SSALivenessAnalysis : public LivenessAnalysis {
  public:
   explicit SSALivenessAnalysis(const FlowGraph& flow_graph)
@@ -49,7 +47,6 @@ class SSALivenessAnalysis : public LivenessAnalysis {
   GraphEntryInstr* graph_entry_;
 };
 
-
 class FlowGraphAllocator : public ValueObject {
  public:
   // Number of stack slots needed for a fpu register spill slot.
@@ -153,7 +150,6 @@ class FlowGraphAllocator : public ValueObject {
                             LiveRange** blocking_ranges,
                             bool* blocked_registers);
 
-
   // Process live ranges sorted by their start and assign registers
   // to them
   void AllocateUnallocatedRanges();
@@ -311,7 +307,6 @@ class FlowGraphAllocator : public ValueObject {
 
   GrowableArray<bool> blocked_registers_;
 
-
   // Worklist for register allocator. Always maintained sorted according
   // to ShouldBeAllocatedBefore predicate.
   GrowableArray<LiveRange*> unallocated_;
@@ -337,7 +332,6 @@ class FlowGraphAllocator : public ValueObject {
   DISALLOW_COPY_AND_ASSIGN(FlowGraphAllocator);
 };
 
-
 // Additional information about a block that is not contained in a
 // block entry.
 class BlockInfo : public ZoneAllocated {
@@ -400,7 +394,6 @@ class BlockInfo : public ZoneAllocated {
   DISALLOW_COPY_AND_ASSIGN(BlockInfo);
 };
 
-
 // UsePosition represents a single use of an SSA value by some instruction.
 // It points to a location slot which either tells register allocator
 // where instruction expects the value (if slot contains a fixed location) or
@@ -427,7 +420,6 @@ class UsePosition : public ZoneAllocated {
 
   bool HasHint() const { return (hint_ != NULL) && !hint_->IsUnallocated(); }
 
-
   void set_next(UsePosition* next) { next_ = next; }
   UsePosition* next() const { return next_; }
 
@@ -442,7 +434,6 @@ class UsePosition : public ZoneAllocated {
   DISALLOW_COPY_AND_ASSIGN(UsePosition);
 };
 
-
 // UseInterval represents a holeless half open interval of liveness for a given
 // SSA value: [start, end) in terms of lifetime positions that
 // NumberInstructions assigns to instructions.  Register allocator has to keep
@@ -479,7 +470,6 @@ class UseInterval : public ZoneAllocated {
   DISALLOW_COPY_AND_ASSIGN(UseInterval);
 };
 
-
 // AllocationFinger is used to keep track of currently active position
 // for the register allocator and cache lookup results.
 class AllocationFinger : public ValueObject {
@@ -512,7 +502,6 @@ class AllocationFinger : public ValueObject {
   DISALLOW_COPY_AND_ASSIGN(AllocationFinger);
 };
 
-
 class SafepointPosition : public ZoneAllocated {
  public:
   SafepointPosition(intptr_t pos, LocationSummary* locs)
@@ -532,7 +521,6 @@ class SafepointPosition : public ZoneAllocated {
   SafepointPosition* next_;
 };
 
-
 // LiveRange represents a sequence of UseIntervals for a given SSA value.
 class LiveRange : public ZoneAllocated {
  public:
@@ -658,7 +646,6 @@ class LiveRange : public ZoneAllocated {
   DISALLOW_COPY_AND_ASSIGN(LiveRange);
 };
 
-
 }  // namespace dart
 
 #endif  // RUNTIME_VM_FLOW_GRAPH_ALLOCATOR_H_