[inspector] cache stack frame for call sites

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index d0b9dc2832ed855bd70b0bd1377919f72da0eb15..a468199c7c3d64b9f770b57431c3d2d2fd5d992f 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4257,6 +4257,8 @@ class BytecodeArray : public FixedArrayBase {
   // offset and source position.
   DECL_ACCESSORS(source_position_table, ByteArray)
 
+  DECL_ACCESSORS(stack_frame_cache, Object)
+
   DECLARE_CAST(BytecodeArray)
 
   // Dispatched behavior.
@@ -4287,7 +4289,9 @@ class BytecodeArray : public FixedArrayBase {
   static const int kHandlerTableOffset = kConstantPoolOffset + kPointerSize;
   static const int kSourcePositionTableOffset =
       kHandlerTableOffset + kPointerSize;
-  static const int kFrameSizeOffset = kSourcePositionTableOffset + kPointerSize;
+  static const int kStackFrameCacheOffset =
+      kSourcePositionTableOffset + kPointerSize;
+  static const int kFrameSizeOffset = kStackFrameCacheOffset + kPointerSize;
   static const int kParameterSizeOffset = kFrameSizeOffset + kIntSize;
   static const int kInterruptBudgetOffset = kParameterSizeOffset + kIntSize;
   static const int kOSRNestingLevelOffset = kInterruptBudgetOffset + kIntSize;
@@ -4670,6 +4674,8 @@ class Code: public HeapObject {
   // [source_position_table]: ByteArray for the source positions table.
   DECL_ACCESSORS(source_position_table, ByteArray)
 
+  DECL_ACCESSORS(stack_frame_cache, Object)
+
   // [trap_handler_index]: An index into the trap handler's master list of code
   // objects.
   DECL_ACCESSORS(trap_handler_index, Smi)
@@ -5046,9 +5052,11 @@ class Code: public HeapObject {
       kHandlerTableOffset + kPointerSize;
   static const int kSourcePositionTableOffset =
       kDeoptimizationDataOffset + kPointerSize;
+  static const int kStackFrameCacheOffset =
+      kSourcePositionTableOffset + kPointerSize;
   // For FUNCTION kind, we store the type feedback info here.
   static const int kTypeFeedbackInfoOffset =
-      kSourcePositionTableOffset + kPointerSize;
+      kStackFrameCacheOffset + kPointerSize;
   static const int kNextCodeLinkOffset = kTypeFeedbackInfoOffset + kPointerSize;
   static const int kGCMetadataOffset = kNextCodeLinkOffset + kPointerSize;
   static const int kInstructionSizeOffset = kGCMetadataOffset + kPointerSize;
@@ -5200,6 +5208,9 @@ class AbstractCode : public HeapObject {
   // Set the source position table.
   inline void set_source_position_table(ByteArray* source_position_table);
 
+  inline Object* stack_frame_cache();
+  inline void set_stack_frame_cache(Object* stack_frame_cache);
+
   // Returns the size of instructions and the metadata.
   inline int SizeIncludingMetadata();