Support for multiple register values

runtime/vm/flow_graph_allocator.h

 // Copyright (c) 2013, 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/flow_graph.h"
 #include "vm/growable_array.h"
 #include "vm/intermediate_language.h"
@@ skipping 91 matching lines @@
   // all SSA values.
   void BuildLiveRanges();
 
   Instruction* ConnectOutgoingPhiMoves(BlockEntryInstr* block,
                                        BitVector* interference_set);
   void ProcessEnvironmentUses(BlockEntryInstr* block, Instruction* current);
   void ProcessMaterializationUses(BlockEntryInstr* block,
                                   const intptr_t block_start_pos,
                                   const intptr_t use_pos,
                                   MaterializeObjectInstr* mat);
+  void ProcessOneInput(BlockEntryInstr* block,
+                       intptr_t pos,
+                       Location* in_ref,
+                       Value* input,
+                       intptr_t vreg);
+  void ProcessOneOutput(BlockEntryInstr* block,
+                        Instruction* current,
+                        intptr_t pos,
+                        Location* out,
+                        Definition* def,
+                        intptr_t vreg,
+                        bool output_same_as_first_input,
+                        Location* in_ref,
+                        Definition* input,
+                        intptr_t input_vreg,
+                        BitVector* interference_set);
   void ProcessOneInstruction(BlockEntryInstr* block,
                              Instruction* instr,
                              BitVector* interference_set);
   void ProcessInitialDefinition(Definition* defn,
                                 LiveRange* range,
                                 BlockEntryInstr* block);
   void ConnectIncomingPhiMoves(JoinEntryInstr* join);
   void BlockLocation(Location loc, intptr_t from, intptr_t to);
   void BlockRegisterLocation(Location loc,
                              intptr_t from,
@@ skipping 524 matching lines @@
 
   AllocationFinger finger_;
 
   DISALLOW_COPY_AND_ASSIGN(LiveRange);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_ALLOCATOR_H_