Put live register bits in stackmaps.

runtime/vm/flow_graph_allocator.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_FLOW_GRAPH_ALLOCATOR_H_
 #define VM_FLOW_GRAPH_ALLOCATOR_H_
 
 #include "vm/growable_array.h"
 #include "vm/intermediate_language.h"
 
 namespace dart {
 
 class AllocationFinger;
 class BlockInfo;
 class FlowGraph;
 class LiveRange;
 class UseInterval;
 class UsePosition;
 
 class FlowGraphAllocator : public ValueObject {
  public:
+  static const intptr_t kDoubleSpillSlotFactor = kDoubleSize / kWordSize;

[Vyacheslav Egorov (Google), 2012/08/30 09:24:35]

you copied the constant but not the comment.

[Kevin Millikin (Google), 2012/08/30 10:02:21]

I restored the comment.

+
   explicit FlowGraphAllocator(const FlowGraph& flow_graph);
 
   void AllocateRegisters();
 
   // Build live-in and live-out sets for each block.
   void AnalyzeLiveness();
 
   // Map a virtual register number to its live range.
   LiveRange* GetLiveRange(intptr_t vreg);
 
@@ skipping 511 matching lines @@
 
   AllocationFinger finger_;
 
   DISALLOW_COPY_AND_ASSIGN(LiveRange);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_ALLOCATOR_H_