[interpreter] Implement OSR graph construction from bytecode.

src/frames.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_FRAMES_H_
 #define V8_FRAMES_H_
 
 #include "src/allocation.h"
 #include "src/handles.h"
 #include "src/safepoint-table.h"
@@ skipping 316 matching lines @@
 // Behaves like an exit frame but with target and new target args.
 class BuiltinExitFrameConstants : public CommonFrameConstants {
  public:
   static const int kNewTargetOffset = kCallerPCOffset + 1 * kPointerSize;
   static const int kTargetOffset = kNewTargetOffset + 1 * kPointerSize;
   static const int kArgcOffset = kTargetOffset + 1 * kPointerSize;
 };
 
 class InterpreterFrameConstants : public AllStatic {
  public:
-  // Fixed frame includes new.target and bytecode offset.
+  // Fixed frame includes new.target, bytecode array, and bytecode offset.
   static const int kFixedFrameSize =
       StandardFrameConstants::kFixedFrameSize + 3 * kPointerSize;
   static const int kFixedFrameSizeFromFp =
       StandardFrameConstants::kFixedFrameSizeFromFp + 3 * kPointerSize;
 
   // FP-relative.
   static const int kLastParamFromFp = StandardFrameConstants::kCallerSPOffset;
   static const int kCallerPCOffsetFromFp =
       StandardFrameConstants::kCallerPCOffset;
   static const int kNewTargetFromFp =
       -StandardFrameConstants::kFixedFrameSizeFromFp - 1 * kPointerSize;
   static const int kBytecodeArrayFromFp =
       -StandardFrameConstants::kFixedFrameSizeFromFp - 2 * kPointerSize;
   static const int kBytecodeOffsetFromFp =
       -StandardFrameConstants::kFixedFrameSizeFromFp - 3 * kPointerSize;
   static const int kRegisterFileFromFp =
       -StandardFrameConstants::kFixedFrameSizeFromFp - 4 * kPointerSize;
 
   static const int kExpressionsOffset = kRegisterFileFromFp;
 
+  // Number of fixed slots in addition to a {StandardFrame}.
+  static const int kExtraSlotCount =
+      InterpreterFrameConstants::kFixedFrameSize / kPointerSize -
+      StandardFrameConstants::kFixedFrameSize / kPointerSize;
+
   // Expression index for {StandardFrame::GetExpressionAddress}.
   static const int kBytecodeArrayExpressionIndex = -2;
   static const int kBytecodeOffsetExpressionIndex = -1;
   static const int kRegisterFileExpressionIndex = 0;
 };
 
 inline static int FPOffsetToFrameSlot(int frame_offset) {
   return StandardFrameConstants::kFixedSlotCountAboveFp - 1 -
          frame_offset / kPointerSize;
 }
@@ skipping 945 matching lines @@
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone);
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FRAMES_H_