[Interpreter] Maintain the parent frame pointer after load

src/interpreter/interpreter-assembler.h

Index: src/interpreter/interpreter-assembler.h
diff --git a/src/interpreter/interpreter-assembler.h b/src/interpreter/interpreter-assembler.h
index a8ab443348acf6cc714db33f67074c4e564bffd8..e7c9e3dd8b8290c8707b75321e4a0ef9fa8e5f28 100644
--- a/src/interpreter/interpreter-assembler.h
+++ b/src/interpreter/interpreter-assembler.h
@@ -159,6 +159,7 @@ class InterpreterAssembler : public CodeStubAssembler {
  private:
   // Returns a tagged pointer to the current function's BytecodeArray object.
   compiler::Node* BytecodeArrayTaggedPointer();
+
   // Returns a raw pointer to first entry in the interpreter dispatch table.
   compiler::Node* DispatchTableRawPointer();
 
@@ -167,6 +168,10 @@ class InterpreterAssembler : public CodeStubAssembler {
   // tracing as these need to bypass accumulator use validity checks.
   compiler::Node* GetAccumulatorUnchecked();
 
+  // Returns the frame point for the interpreted frame of the function being

[oth, 2016/06/24 09:27:29]

s/point/pointer/

[rmcilroy, 2016/06/24 09:48:14]

Done.

+  // interpreted.
+  compiler::Node* GetInterpretedFramePointer();
+
   // Saves and restores interpreter bytecode offset to the interpreter stack
   // frame when performing a call.
   void CallPrologue() override;
@@ -233,6 +238,7 @@ class InterpreterAssembler : public CodeStubAssembler {
 
   Bytecode bytecode_;
   OperandScale operand_scale_;
+  CodeStubAssembler::Variable interpreted_frame_pointer_;
   CodeStubAssembler::Variable accumulator_;
   AccumulatorUse accumulator_use_;
   bool made_call_;