Crankshaft: Move LEnvironment and LPointerMap classes to platform-independent lithium.h. Move WriteTranslation method from LEnvironment class to LCodeGen class.

Review URL: http://codereview.chromium.org/6142011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6276 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/lithium-arm.cc

@@ -880,59 +880,6 @@ void LChunkBuilder::VisitInstruction(HInstruction* current) {
 }
 
 
-void LEnvironment::WriteTranslation(LCodeGen* cgen,
-                                    Translation* translation) const {
-  if (this == NULL) return;
-
-  // The translation includes one command per value in the environment.
-  int translation_size = values()->length();
-  // The output frame height does not include the parameters.
-  int height = translation_size - parameter_count();
-
-  outer()->WriteTranslation(cgen, translation);
-  int closure_id = cgen->DefineDeoptimizationLiteral(closure());
-  translation->BeginFrame(ast_id(), closure_id, height);
-  for (int i = 0; i < translation_size; ++i) {
-    LOperand* value = values()->at(i);
-    // spilled_registers_ and spilled_double_registers_ are either
-    // both NULL or both set.
-    if (spilled_registers_ != NULL && value != NULL) {
-      if (value->IsRegister() &&
-          spilled_registers_[value->index()] != NULL) {
-        translation->MarkDuplicate();
-        cgen->AddToTranslation(translation,
-                               spilled_registers_[value->index()],
-                               HasTaggedValueAt(i));
-      } else if (value->IsDoubleRegister() &&
-                 spilled_double_registers_[value->index()] != NULL) {
-        translation->MarkDuplicate();
-        cgen->AddToTranslation(translation,
-                               spilled_double_registers_[value->index()],
-                               false);
-      }
-    }
-
-    cgen->AddToTranslation(translation, value, HasTaggedValueAt(i));
-  }
-}
-
-
-void LEnvironment::PrintTo(StringStream* stream) const {
-  stream->Add("[id=%d|", ast_id());
-  stream->Add("[parameters=%d|", parameter_count());
-  stream->Add("[arguments_stack_height=%d|", arguments_stack_height());
-  for (int i = 0; i < values_.length(); ++i) {
-    if (i != 0) stream->Add(";");
-    if (values_[i] == NULL) {
-      stream->Add("[hole]");
-    } else {
-      values_[i]->PrintTo(stream);
-    }
-  }
-  stream->Add("]");
-}
-
-
 LEnvironment* LChunkBuilder::CreateEnvironment(HEnvironment* hydrogen_env) {
   if (hydrogen_env == NULL) return NULL;
 
@@ -1889,21 +1836,4 @@ LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
 }
 
 
-void LPointerMap::RecordPointer(LOperand* op) {
-  // Do not record arguments as pointers.
-  if (op->IsStackSlot() && op->index() < 0) return;
-  ASSERT(!op->IsDoubleRegister() && !op->IsDoubleStackSlot());
-  pointer_operands_.Add(op);
-}
-
-
-void LPointerMap::PrintTo(StringStream* stream) const {
-  stream->Add("{");
-  for (int i = 0; i < pointer_operands_.length(); ++i) {
-    if (i != 0) stream->Add(";");
-    pointer_operands_[i]->PrintTo(stream);
-  }
-  stream->Add("} @%d", position());
-}
-
 } }  // namespace v8::internal

src/arm/lithium-arm.h

@@ -38,8 +38,6 @@ namespace internal {
 
 // Forward declarations.
 class LCodeGen;
-class LEnvironment;
-class Translation;
 
 
 // Type hierarchy:
@@ -1752,108 +1750,6 @@ class LStackCheck: public LInstruction {
 };
 
 
-class LPointerMap: public ZoneObject {
- public:
-  explicit LPointerMap(int position)
-      : pointer_operands_(8), position_(position), lithium_position_(-1) { }
-
-  const ZoneList<LOperand*>* operands() const { return &pointer_operands_; }
-  int position() const { return position_; }
-  int lithium_position() const { return lithium_position_; }
-
-  void set_lithium_position(int pos) {
-    ASSERT(lithium_position_ == -1);
-    lithium_position_ = pos;
-  }
-
-  void RecordPointer(LOperand* op);
-  void PrintTo(StringStream* stream) const;
-
- private:
-  ZoneList<LOperand*> pointer_operands_;
-  int position_;
-  int lithium_position_;
-};
-
-
-class LEnvironment: public ZoneObject {
- public:
-  LEnvironment(Handle<JSFunction> closure,
-               int ast_id,
-               int parameter_count,
-               int argument_count,
-               int value_count,
-               LEnvironment* outer)
-      : closure_(closure),
-        arguments_stack_height_(argument_count),
-        deoptimization_index_(Safepoint::kNoDeoptimizationIndex),
-        translation_index_(-1),
-        ast_id_(ast_id),
-        parameter_count_(parameter_count),
-        values_(value_count),
-        representations_(value_count),
-        spilled_registers_(NULL),
-        spilled_double_registers_(NULL),
-        outer_(outer) {
-  }
-
-  Handle<JSFunction> closure() const { return closure_; }
-  int arguments_stack_height() const { return arguments_stack_height_; }
-  int deoptimization_index() const { return deoptimization_index_; }
-  int translation_index() const { return translation_index_; }
-  int ast_id() const { return ast_id_; }
-  int parameter_count() const { return parameter_count_; }
-  const ZoneList<LOperand*>* values() const { return &values_; }
-  LEnvironment* outer() const { return outer_; }
-
-  void AddValue(LOperand* operand, Representation representation) {
-    values_.Add(operand);
-    representations_.Add(representation);
-  }
-
-  bool HasTaggedValueAt(int index) const {
-    return representations_[index].IsTagged();
-  }
-
-  void Register(int deoptimization_index, int translation_index) {
-    ASSERT(!HasBeenRegistered());
-    deoptimization_index_ = deoptimization_index;
-    translation_index_ = translation_index;
-  }
-  bool HasBeenRegistered() const {
-    return deoptimization_index_ != Safepoint::kNoDeoptimizationIndex;
-  }
-
-  void SetSpilledRegisters(LOperand** registers,
-                           LOperand** double_registers) {
-    spilled_registers_ = registers;
-    spilled_double_registers_ = double_registers;
-  }
-
-  // Emit frame translation commands for this environment.
-  void WriteTranslation(LCodeGen* cgen, Translation* translation) const;
-
-  void PrintTo(StringStream* stream) const;
-
- private:
-  Handle<JSFunction> closure_;
-  int arguments_stack_height_;
-  int deoptimization_index_;
-  int translation_index_;
-  int ast_id_;
-  int parameter_count_;
-  ZoneList<LOperand*> values_;
-  ZoneList<Representation> representations_;
-
-  // Allocation index indexed arrays of spill slot operands for registers
-  // that are also in spill slots at an OSR entry.  NULL for environments
-  // that do not correspond to an OSR entry.
-  LOperand** spilled_registers_;
-  LOperand** spilled_double_registers_;
-
-  LEnvironment* outer_;
-};
-
 class LChunkBuilder;
 class LChunk: public ZoneObject {
  public:

src/arm/lithium-codegen-arm.cc

@@ -324,6 +324,45 @@ MemOperand LCodeGen::ToMemOperand(LOperand* op) const {
 }
 
 
+void LCodeGen::WriteTranslation(LEnvironment* environment,
+                                Translation* translation) {
+  if (environment == NULL) return;
+
+  // The translation includes one command per value in the environment.
+  int translation_size = environment->values()->length();
+  // The output frame height does not include the parameters.
+  int height = translation_size - environment->parameter_count();
+
+  WriteTranslation(environment->outer(), translation);
+  int closure_id = DefineDeoptimizationLiteral(environment->closure());
+  translation->BeginFrame(environment->ast_id(), closure_id, height);
+  for (int i = 0; i < translation_size; ++i) {
+    LOperand* value = environment->values()->at(i);
+    // spilled_registers_ and spilled_double_registers_ are either
+    // both NULL or both set.
+    if (environment->spilled_registers() != NULL && value != NULL) {
+      if (value->IsRegister() &&
+          environment->spilled_registers()[value->index()] != NULL) {
+        translation->MarkDuplicate();
+        AddToTranslation(translation,
+                         environment->spilled_registers()[value->index()],
+                         environment->HasTaggedValueAt(i));
+      } else if (
+          value->IsDoubleRegister() &&
+          environment->spilled_double_registers()[value->index()] != NULL) {
+        translation->MarkDuplicate();
+        AddToTranslation(
+            translation,
+            environment->spilled_double_registers()[value->index()],
+            false);
+      }
+    }
+
+    AddToTranslation(translation, value, environment->HasTaggedValueAt(i));
+  }
+}
+
+
 void LCodeGen::AddToTranslation(Translation* translation,
                                 LOperand* op,
                                 bool is_tagged) {
@@ -439,7 +478,7 @@ void LCodeGen::RegisterEnvironmentForDeoptimization(LEnvironment* environment) {
       ++frame_count;
     }
     Translation translation(&translations_, frame_count);
-    environment->WriteTranslation(this, &translation);
+    WriteTranslation(environment, &translation);
     int deoptimization_index = deoptimizations_.length();
     environment->Register(deoptimization_index, translation.index());
     deoptimizations_.Add(environment);

src/arm/lithium-codegen-arm.h

@@ -80,6 +80,9 @@ class LCodeGen BASE_EMBEDDED {
   // Parallel move support.
   void DoParallelMove(LParallelMove* move);
 
+  // Emit frame translation commands for an environment.
+  void WriteTranslation(LEnvironment* environment, Translation* translation);
+
   // Declare methods that deal with the individual node types.
 #define DECLARE_DO(type) void Do##type(L##type* node);
   LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_DO)

src/ia32/lithium-codegen-ia32.cc

@@ -261,6 +261,45 @@ Operand LCodeGen::ToOperand(LOperand* op) const {
 }
 
 
+void LCodeGen::WriteTranslation(LEnvironment* environment,
+                                Translation* translation) {
+  if (environment == NULL) return;
+
+  // The translation includes one command per value in the environment.
+  int translation_size = environment->values()->length();
+  // The output frame height does not include the parameters.
+  int height = translation_size - environment->parameter_count();
+
+  WriteTranslation(environment->outer(), translation);
+  int closure_id = DefineDeoptimizationLiteral(environment->closure());
+  translation->BeginFrame(environment->ast_id(), closure_id, height);
+  for (int i = 0; i < translation_size; ++i) {
+    LOperand* value = environment->values()->at(i);
+    // spilled_registers_ and spilled_double_registers_ are either
+    // both NULL or both set.
+    if (environment->spilled_registers() != NULL && value != NULL) {
+      if (value->IsRegister() &&
+          environment->spilled_registers()[value->index()] != NULL) {
+        translation->MarkDuplicate();
+        AddToTranslation(translation,
+                         environment->spilled_registers()[value->index()],
+                         environment->HasTaggedValueAt(i));
+      } else if (
+          value->IsDoubleRegister() &&
+          environment->spilled_double_registers()[value->index()] != NULL) {
+        translation->MarkDuplicate();
+        AddToTranslation(
+            translation,
+            environment->spilled_double_registers()[value->index()],
+            false);
+      }
+    }
+
+    AddToTranslation(translation, value, environment->HasTaggedValueAt(i));
+  }
+}
+
+
 void LCodeGen::AddToTranslation(Translation* translation,
                                 LOperand* op,
                                 bool is_tagged) {
@@ -385,7 +424,7 @@ void LCodeGen::RegisterEnvironmentForDeoptimization(LEnvironment* environment) {
       ++frame_count;
     }
     Translation translation(&translations_, frame_count);
-    environment->WriteTranslation(this, &translation);
+    WriteTranslation(environment, &translation);
     int deoptimization_index = deoptimizations_.length();
     environment->Register(deoptimization_index, translation.index());
     deoptimizations_.Add(environment);

src/ia32/lithium-codegen-ia32.h

@@ -83,6 +83,9 @@ class LCodeGen BASE_EMBEDDED {
   // Parallel move support.
   void DoParallelMove(LParallelMove* move);
 
+  // Emit frame translation commands for an environment.
+  void WriteTranslation(LEnvironment* environment, Translation* translation);
+
   // Declare methods that deal with the individual node types.
 #define DECLARE_DO(type) void Do##type(L##type* node);
   LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_DO)

src/ia32/lithium-ia32.cc

@@ -890,59 +890,6 @@ void LChunkBuilder::VisitInstruction(HInstruction* current) {
 }
 
 
-void LEnvironment::WriteTranslation(LCodeGen* cgen,
-                                    Translation* translation) const {
-  if (this == NULL) return;
-
-  // The translation includes one command per value in the environment.
-  int translation_size = values()->length();
-  // The output frame height does not include the parameters.
-  int height = translation_size - parameter_count();
-
-  outer()->WriteTranslation(cgen, translation);
-  int closure_id = cgen->DefineDeoptimizationLiteral(closure());
-  translation->BeginFrame(ast_id(), closure_id, height);
-  for (int i = 0; i < translation_size; ++i) {
-    LOperand* value = values()->at(i);
-    // spilled_registers_ and spilled_double_registers_ are either
-    // both NULL or both set.
-    if (spilled_registers_ != NULL && value != NULL) {
-      if (value->IsRegister() &&
-          spilled_registers_[value->index()] != NULL) {
-        translation->MarkDuplicate();
-        cgen->AddToTranslation(translation,
-                               spilled_registers_[value->index()],
-                               HasTaggedValueAt(i));
-      } else if (value->IsDoubleRegister() &&
-                 spilled_double_registers_[value->index()] != NULL) {
-        translation->MarkDuplicate();
-        cgen->AddToTranslation(translation,
-                               spilled_double_registers_[value->index()],
-                               false);
-      }
-    }
-
-    cgen->AddToTranslation(translation, value, HasTaggedValueAt(i));
-  }
-}
-
-
-void LEnvironment::PrintTo(StringStream* stream) {
-  stream->Add("[id=%d|", ast_id());
-  stream->Add("[parameters=%d|", parameter_count());
-  stream->Add("[arguments_stack_height=%d|", arguments_stack_height());
-  for (int i = 0; i < values_.length(); ++i) {
-    if (i != 0) stream->Add(";");
-    if (values_[i] == NULL) {
-      stream->Add("[hole]");
-    } else {
-      values_[i]->PrintTo(stream);
-    }
-  }
-  stream->Add("]");
-}
-
-
 LEnvironment* LChunkBuilder::CreateEnvironment(HEnvironment* hydrogen_env) {
   if (hydrogen_env == NULL) return NULL;
 
@@ -1922,21 +1869,4 @@ LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
 }
 
 
-void LPointerMap::RecordPointer(LOperand* op) {
-  // Do not record arguments as pointers.
-  if (op->IsStackSlot() && op->index() < 0) return;
-  ASSERT(!op->IsDoubleRegister() && !op->IsDoubleStackSlot());
-  pointer_operands_.Add(op);
-}
-
-
-void LPointerMap::PrintTo(StringStream* stream) {
-  stream->Add("{");
-  for (int i = 0; i < pointer_operands_.length(); ++i) {
-    if (i != 0) stream->Add(";");
-    pointer_operands_[i]->PrintTo(stream);
-  }
-  stream->Add("} @%d", position());
-}
-
 } }  // namespace v8::internal

src/ia32/lithium-ia32.h

@@ -38,8 +38,6 @@ namespace internal {
 
 // Forward declarations.
 class LCodeGen;
-class LEnvironment;
-class Translation;
 
 
 // Type hierarchy:
@@ -1836,108 +1834,6 @@ class LStackCheck: public LTemplateInstruction<0, 0, 0> {
 };
 
 
-class LPointerMap: public ZoneObject {
- public:
-  explicit LPointerMap(int position)
-      : pointer_operands_(8), position_(position), lithium_position_(-1) { }
-
-  const ZoneList<LOperand*>* operands() const { return &pointer_operands_; }
-  int position() const { return position_; }
-  int lithium_position() const { return lithium_position_; }
-
-  void set_lithium_position(int pos) {
-    ASSERT(lithium_position_ == -1);
-    lithium_position_ = pos;
-  }
-
-  void RecordPointer(LOperand* op);
-  void PrintTo(StringStream* stream);
-
- private:
-  ZoneList<LOperand*> pointer_operands_;
-  int position_;
-  int lithium_position_;
-};
-
-
-class LEnvironment: public ZoneObject {
- public:
-  LEnvironment(Handle<JSFunction> closure,
-               int ast_id,
-               int parameter_count,
-               int argument_count,
-               int value_count,
-               LEnvironment* outer)
-      : closure_(closure),
-        arguments_stack_height_(argument_count),
-        deoptimization_index_(Safepoint::kNoDeoptimizationIndex),
-        translation_index_(-1),
-        ast_id_(ast_id),
-        parameter_count_(parameter_count),
-        values_(value_count),
-        representations_(value_count),
-        spilled_registers_(NULL),
-        spilled_double_registers_(NULL),
-        outer_(outer) {
-  }
-
-  Handle<JSFunction> closure() const { return closure_; }
-  int arguments_stack_height() const { return arguments_stack_height_; }
-  int deoptimization_index() const { return deoptimization_index_; }
-  int translation_index() const { return translation_index_; }
-  int ast_id() const { return ast_id_; }
-  int parameter_count() const { return parameter_count_; }
-  const ZoneList<LOperand*>* values() const { return &values_; }
-  LEnvironment* outer() const { return outer_; }
-
-  void AddValue(LOperand* operand, Representation representation) {
-    values_.Add(operand);
-    representations_.Add(representation);
-  }
-
-  bool HasTaggedValueAt(int index) const {
-    return representations_[index].IsTagged();
-  }
-
-  void Register(int deoptimization_index, int translation_index) {
-    ASSERT(!HasBeenRegistered());
-    deoptimization_index_ = deoptimization_index;
-    translation_index_ = translation_index;
-  }
-  bool HasBeenRegistered() const {
-    return deoptimization_index_ != Safepoint::kNoDeoptimizationIndex;
-  }
-
-  void SetSpilledRegisters(LOperand** registers,
-                           LOperand** double_registers) {
-    spilled_registers_ = registers;
-    spilled_double_registers_ = double_registers;
-  }
-
-  // Emit frame translation commands for this environment.
-  void WriteTranslation(LCodeGen* cgen, Translation* translation) const;
-
-  void PrintTo(StringStream* stream);
-
- private:
-  Handle<JSFunction> closure_;
-  int arguments_stack_height_;
-  int deoptimization_index_;
-  int translation_index_;
-  int ast_id_;
-  int parameter_count_;
-  ZoneList<LOperand*> values_;
-  ZoneList<Representation> representations_;
-
-  // Allocation index indexed arrays of spill slot operands for registers
-  // that are also in spill slots at an OSR entry.  NULL for environments
-  // that do not correspond to an OSR entry.
-  LOperand** spilled_registers_;
-  LOperand** spilled_double_registers_;
-
-  LEnvironment* outer_;
-};
-
 class LChunkBuilder;
 class LChunk: public ZoneObject {
  public:

src/lithium.cc

@@ -208,4 +208,38 @@ void LParallelMove::PrintDataTo(StringStream* stream) const {
 }
 
 
+void LEnvironment::PrintTo(StringStream* stream) {
+  stream->Add("[id=%d|", ast_id());
+  stream->Add("[parameters=%d|", parameter_count());
+  stream->Add("[arguments_stack_height=%d|", arguments_stack_height());
+  for (int i = 0; i < values_.length(); ++i) {
+    if (i != 0) stream->Add(";");
+    if (values_[i] == NULL) {
+      stream->Add("[hole]");
+    } else {
+      values_[i]->PrintTo(stream);
+    }
+  }
+  stream->Add("]");
+}
+
+
+void LPointerMap::RecordPointer(LOperand* op) {
+  // Do not record arguments as pointers.
+  if (op->IsStackSlot() && op->index() < 0) return;
+  ASSERT(!op->IsDoubleRegister() && !op->IsDoubleStackSlot());
+  pointer_operands_.Add(op);
+}
+
+
+void LPointerMap::PrintTo(StringStream* stream) {
+  stream->Add("{");
+  for (int i = 0; i < pointer_operands_.length(); ++i) {
+    if (i != 0) stream->Add(";");
+    pointer_operands_[i]->PrintTo(stream);
+  }
+  stream->Add("} @%d", position());
+}
+
+
 } }  // namespace v8::internal

src/lithium.h

@@ -28,12 +28,16 @@
 #ifndef V8_LITHIUM_H_
 #define V8_LITHIUM_H_
 
+#include "hydrogen.h"
 #include "lithium-allocator.h"
+#include "safepoint-table.h"
 
 namespace v8 {
 namespace internal {
 
+class LCodeGen;
 class LGapNode;
+class Translation;
 
 class LGapResolver BASE_EMBEDDED {
  public:
@@ -78,6 +82,111 @@ class LParallelMove : public ZoneObject {
 };
 
 
+class LPointerMap: public ZoneObject {
+ public:
+  explicit LPointerMap(int position)
+      : pointer_operands_(8), position_(position), lithium_position_(-1) { }
+
+  const ZoneList<LOperand*>* operands() const { return &pointer_operands_; }
+  int position() const { return position_; }
+  int lithium_position() const { return lithium_position_; }
+
+  void set_lithium_position(int pos) {
+    ASSERT(lithium_position_ == -1);
+    lithium_position_ = pos;
+  }
+
+  void RecordPointer(LOperand* op);
+  void PrintTo(StringStream* stream);
+
+ private:
+  ZoneList<LOperand*> pointer_operands_;
+  int position_;
+  int lithium_position_;
+};
+
+
+class LEnvironment: public ZoneObject {
+ public:
+  LEnvironment(Handle<JSFunction> closure,
+               int ast_id,
+               int parameter_count,
+               int argument_count,
+               int value_count,
+               LEnvironment* outer)
+      : closure_(closure),
+        arguments_stack_height_(argument_count),
+        deoptimization_index_(Safepoint::kNoDeoptimizationIndex),
+        translation_index_(-1),
+        ast_id_(ast_id),
+        parameter_count_(parameter_count),
+        values_(value_count),
+        representations_(value_count),
+        spilled_registers_(NULL),
+        spilled_double_registers_(NULL),
+        outer_(outer) {
+  }
+
+  Handle<JSFunction> closure() const { return closure_; }
+  int arguments_stack_height() const { return arguments_stack_height_; }
+  int deoptimization_index() const { return deoptimization_index_; }
+  int translation_index() const { return translation_index_; }
+  int ast_id() const { return ast_id_; }
+  int parameter_count() const { return parameter_count_; }
+  LOperand** spilled_registers() const { return spilled_registers_; }
+  LOperand** spilled_double_registers() const {
+    return spilled_double_registers_;
+  }
+  const ZoneList<LOperand*>* values() const { return &values_; }
+  LEnvironment* outer() const { return outer_; }
+
+  void AddValue(LOperand* operand, Representation representation) {
+    values_.Add(operand);
+    representations_.Add(representation);
+  }
+
+  bool HasTaggedValueAt(int index) const {
+    return representations_[index].IsTagged();
+  }
+
+  void Register(int deoptimization_index, int translation_index) {
+    ASSERT(!HasBeenRegistered());
+    deoptimization_index_ = deoptimization_index;
+    translation_index_ = translation_index;
+  }
+  bool HasBeenRegistered() const {
+    return deoptimization_index_ != Safepoint::kNoDeoptimizationIndex;
+  }
+
+  void SetSpilledRegisters(LOperand** registers,
+                           LOperand** double_registers) {
+    spilled_registers_ = registers;
+    spilled_double_registers_ = double_registers;
+  }
+
+  void PrintTo(StringStream* stream);
+
+ private:
+  Handle<JSFunction> closure_;
+  int arguments_stack_height_;
+  int deoptimization_index_;
+  int translation_index_;
+  int ast_id_;
+  int parameter_count_;
+  ZoneList<LOperand*> values_;
+  ZoneList<Representation> representations_;
+
+  // Allocation index indexed arrays of spill slot operands for registers
+  // that are also in spill slots at an OSR entry.  NULL for environments
+  // that do not correspond to an OSR entry.
+  LOperand** spilled_registers_;
+  LOperand** spilled_double_registers_;
+
+  LEnvironment* outer_;
+
+  friend class LCodegen;
+};
+
 } }  // namespace v8::internal
 
 #endif  // V8_LITHIUM_H_

src/x64/lithium-codegen-x64.cc

@@ -36,6 +36,45 @@ namespace internal {
 #define __ masm()->
 
 
+void LCodeGen::WriteTranslation(LEnvironment* environment,
+                                Translation* translation) {
+  if (environment == NULL) return;
+
+  // The translation includes one command per value in the environment.
+  int translation_size = environment->values()->length();
+  // The output frame height does not include the parameters.
+  int height = translation_size - environment->parameter_count();
+
+  WriteTranslation(environment->outer(), translation);
+  int closure_id = DefineDeoptimizationLiteral(environment->closure());
+  translation->BeginFrame(environment->ast_id(), closure_id, height);
+  for (int i = 0; i < translation_size; ++i) {
+    LOperand* value = environment->values()->at(i);
+    // spilled_registers_ and spilled_double_registers_ are either
+    // both NULL or both set.
+    if (environment->spilled_registers() != NULL && value != NULL) {
+      if (value->IsRegister() &&
+          environment->spilled_registers()[value->index()] != NULL) {
+        translation->MarkDuplicate();
+        AddToTranslation(translation,
+                         environment->spilled_registers()[value->index()],
+                         environment->HasTaggedValueAt(i));
+      } else if (
+          value->IsDoubleRegister() &&
+          environment->spilled_double_registers()[value->index()] != NULL) {
+        translation->MarkDuplicate();
+        AddToTranslation(
+            translation,
+            environment->spilled_double_registers()[value->index()],
+            false);
+      }
+    }
+
+    AddToTranslation(translation, value, environment->HasTaggedValueAt(i));
+  }
+}
+
+
 void LCodeGen::DoLazyBailout(LLazyBailout* instr) {
   // No code for lazy bailout instruction. Used to capture environment after a
   // call for populating the safepoint data with deoptimization data.

src/x64/lithium-codegen-x64.h

@@ -76,6 +76,9 @@ class LCodeGen BASE_EMBEDDED {
   // Parallel move support.
   void DoParallelMove(LParallelMove* move);
 
+  // Emit frame translation commands for an environment.
+  void WriteTranslation(LEnvironment* environment, Translation* translation);
+
   // Declare methods that deal with the individual node types.
 #define DECLARE_DO(type) void Do##type(L##type* node);
   LITHIUM_CONCRETE_INSTRUCTION_LIST(DECLARE_DO)
@@ -158,6 +161,15 @@ class LCodeGen BASE_EMBEDDED {
   void DeoptimizeIf(Condition cc, LEnvironment* environment) {
     UNIMPLEMENTED();
   }
+
+  void AddToTranslation(Translation* translation,
+                        LOperand* op,
+                        bool is_tagged) { UNIMPLEMENTED(); }
+
+  int DefineDeoptimizationLiteral(Handle<Object> literal) {
+    UNIMPLEMENTED();
+    return 0;
+  }
   void PopulateDeoptimizationLiteralsWithInlinedFunctions() { UNIMPLEMENTED(); }
 
   LChunk* const chunk_;

src/x64/lithium-x64.h

@@ -38,8 +38,6 @@ namespace internal {
 
 // Forward declarations.
 class LCodeGen;
-class LEnvironment;
-class Translation;
 
 
 // Type hierarchy:
@@ -283,75 +281,6 @@ class LOsrEntry: public LTemplateInstruction<0> {
 };
 
 
-class LPointerMap: public ZoneObject {
- public:
-  explicit LPointerMap(int position)
-      : pointer_operands_(8), position_(position), lithium_position_(-1) { }
-
-  int lithium_position() const {
-    UNIMPLEMENTED();
-    return 0;
-  }
-
-  void RecordPointer(LOperand* op) { UNIMPLEMENTED(); }
-
- private:
-  ZoneList<LOperand*> pointer_operands_;
-  int position_;
-  int lithium_position_;
-};
-
-
-class LEnvironment: public ZoneObject {
- public:
-  LEnvironment(Handle<JSFunction> closure,
-               int ast_id,
-               int parameter_count,
-               int argument_count,
-               int value_count,
-               LEnvironment* outer)
-      : closure_(closure),
-        arguments_stack_height_(argument_count),
-        deoptimization_index_(Safepoint::kNoDeoptimizationIndex),
-        translation_index_(-1),
-        ast_id_(ast_id),
-        parameter_count_(parameter_count),
-        values_(value_count),
-        representations_(value_count),
-        spilled_registers_(NULL),
-        spilled_double_registers_(NULL),
-        outer_(outer) {
-  }
-
-  Handle<JSFunction> closure() const { return closure_; }
-  int arguments_stack_height() const { return arguments_stack_height_; }
-  int deoptimization_index() const { return deoptimization_index_; }
-  int translation_index() const { return translation_index_; }
-  int ast_id() const { return ast_id_; }
-  int parameter_count() const { return parameter_count_; }
-  const ZoneList<LOperand*>* values() const { return &values_; }
-  LEnvironment* outer() const { return outer_; }
-
- private:
-  Handle<JSFunction> closure_;
-  int arguments_stack_height_;
-  int deoptimization_index_;
-  int translation_index_;
-  int ast_id_;
-  int parameter_count_;
-  ZoneList<LOperand*> values_;
-  ZoneList<Representation> representations_;
-
-  // Allocation index indexed arrays of spill slot operands for registers
-  // that are also in spill slots at an OSR entry.  NULL for environments
-  // that do not correspond to an OSR entry.
-  LOperand** spilled_registers_;
-  LOperand** spilled_double_registers_;
-
-  LEnvironment* outer_;
-};
-
-
 class LChunkBuilder;
 class LChunk: public ZoneObject {
  public: