Allow the deoptimizer translation to track de-materialized objects.

src/x64/lithium-x64.cc

Index: src/x64/lithium-x64.cc
diff --git a/src/x64/lithium-x64.cc b/src/x64/lithium-x64.cc
index cb0659d24df3c055d43dde3525bb04f385c46dc8..57a8b2e2974396d006c985f03b227d10ff0cd5b5 100644
--- a/src/x64/lithium-x64.cc
+++ b/src/x64/lithium-x64.cc
@@ -937,7 +937,7 @@ LEnvironment* LChunkBuilder::CreateEnvironment(
   BailoutId ast_id = hydrogen_env->ast_id();
   ASSERT(!ast_id.IsNone() ||
          hydrogen_env->frame_type() != JS_FUNCTION);
-  int value_count = hydrogen_env->length();
+  int value_count = hydrogen_env->length() - hydrogen_env->specials_count();
   LEnvironment* result = new(zone()) LEnvironment(
       hydrogen_env->closure(),
       hydrogen_env->frame_type(),
@@ -948,13 +948,15 @@ LEnvironment* LChunkBuilder::CreateEnvironment(
       outer,
       hydrogen_env->entry(),
       zone());
+  bool needs_arguments_object_materialization = false;
   int argument_index = *argument_index_accumulator;
-  for (int i = 0; i < value_count; ++i) {
+  for (int i = 0; i < hydrogen_env->length(); ++i) {
     if (hydrogen_env->is_special_index(i)) continue;
 
     HValue* value = hydrogen_env->values()->at(i);
     LOperand* op = NULL;
     if (value->IsArgumentsObject()) {
+      needs_arguments_object_materialization = true;
       op = NULL;
     } else if (value->IsPushArgument()) {
       op = new(zone()) LArgument(argument_index++);
@@ -966,6 +968,22 @@ LEnvironment* LChunkBuilder::CreateEnvironment(
                      value->CheckFlag(HInstruction::kUint32));
   }
 
+  if (needs_arguments_object_materialization) {
+    HArgumentsObject* arguments = hydrogen_env->entry() == NULL
+        ? graph()->GetArgumentsObject()
+        : hydrogen_env->entry()->arguments_object();
+    ASSERT(arguments->IsLinked());
+    for (int i = 1; i < arguments->arguments_count(); ++i) {
+      HValue* value = arguments->arguments_values()->at(i);
+      ASSERT(!value->IsArgumentsObject() && !value->IsPushArgument());
+      ASSERT(HInstruction::cast(value)->IsLinked());
+      LOperand* op = UseAny(value);
+      result->AddValue(op,
+                       value->representation(),
+                       value->CheckFlag(HInstruction::kUint32));
+    }
+  }
+
   if (hydrogen_env->frame_type() == JS_FUNCTION) {
     *argument_index_accumulator = argument_index;
   }