First implementation of allocation elimination in Hydrogen.

src/x64/lithium-codegen-x64.h

Index: src/x64/lithium-codegen-x64.h
diff --git a/src/x64/lithium-codegen-x64.h b/src/x64/lithium-codegen-x64.h
index 4eab56c5b4b54789d67f74761fd89d56173cd3e1..8e61ce32fa0ac3b18b019bc1d9358bff521d0c93 100644
--- a/src/x64/lithium-codegen-x64.h
+++ b/src/x64/lithium-codegen-x64.h
@@ -237,7 +237,6 @@ class LCodeGen BASE_EMBEDDED {
                          CallKind call_kind,
                          RDIState rdi_state);
 
-
   void RecordSafepointWithLazyDeopt(LInstruction* instr,
                                     SafepointMode safepoint_mode,
                                     int argc);
@@ -248,10 +247,14 @@ class LCodeGen BASE_EMBEDDED {
                     Deoptimizer::BailoutType bailout_type);
   void DeoptimizeIf(Condition cc, LEnvironment* environment);
   void ApplyCheckIf(Condition cc, LBoundsCheck* check);
-  void AddToTranslation(Translation* translation,
+
+  void AddToTranslation(LEnvironment* environment,
+                        Translation* translation,
                         LOperand* op,
                         bool is_tagged,
-                        bool is_uint32);
+                        bool is_uint32,
+                        int* object_index_pointer,
+                        int* dematerialized_index_pointer);
   void RegisterDependentCodeForEmbeddedMaps(Handle<Code> code);
   void PopulateDeoptimizationData(Handle<Code> code);
   int DefineDeoptimizationLiteral(Handle<Object> literal);