Revert of Revert [TypeFeedbackVector] Root literal arrays in function literal slots

src/contexts.cc

Index: src/contexts.cc
diff --git a/src/contexts.cc b/src/contexts.cc
index 47ffb275b489c9bc9fef1482374f0b619ff633ba..67c85f1381b91286e45ec533b627d195b2fbfb7b 100644
--- a/src/contexts.cc
+++ b/src/contexts.cc
@@ -412,9 +412,8 @@
 
 static const int kSharedOffset = 0;
 static const int kCachedCodeOffset = 1;
-static const int kLiteralsOffset = 2;
-static const int kOsrAstIdOffset = 3;
-static const int kEntryLength = 4;
+static const int kOsrAstIdOffset = 2;
+static const int kEntryLength = 3;
 static const int kInitialLength = kEntryLength;
 
 int Context::SearchOptimizedCodeMapEntry(SharedFunctionInfo* shared,
@@ -436,38 +435,29 @@
   return -1;
 }
 
-void Context::SearchOptimizedCodeMap(SharedFunctionInfo* shared,
-                                     BailoutId osr_ast_id, Code** pcode,
-                                     LiteralsArray** pliterals) {
+Code* Context::SearchOptimizedCodeMap(SharedFunctionInfo* shared,
+                                      BailoutId osr_ast_id) {
   DCHECK(this->IsNativeContext());
   int entry = SearchOptimizedCodeMapEntry(shared, osr_ast_id);
   if (entry != -1) {
     FixedArray* code_map = osr_code_table();
     DCHECK_LE(entry + kEntryLength, code_map->length());
     WeakCell* cell = WeakCell::cast(code_map->get(entry + kCachedCodeOffset));
-    WeakCell* literals_cell =
-        WeakCell::cast(code_map->get(entry + kLiteralsOffset));
-
-    *pcode = cell->cleared() ? nullptr : Code::cast(cell->value());
-    *pliterals = literals_cell->cleared()
-                     ? nullptr
-                     : LiteralsArray::cast(literals_cell->value());
-  } else {
-    *pcode = nullptr;
-    *pliterals = nullptr;
-  }
+
+    return cell->cleared() ? nullptr : Code::cast(cell->value());
+  }
+  return nullptr;
 }
 
 void Context::AddToOptimizedCodeMap(Handle<Context> native_context,
                                     Handle<SharedFunctionInfo> shared,
                                     Handle<Code> code,
-                                    Handle<LiteralsArray> literals,
                                     BailoutId osr_ast_id) {
   DCHECK(native_context->IsNativeContext());
   Isolate* isolate = native_context->GetIsolate();
   if (isolate->serializer_enabled()) return;
 
-  STATIC_ASSERT(kEntryLength == 4);
+  STATIC_ASSERT(kEntryLength == 3);
   Handle<FixedArray> new_code_map;
   int entry;
 
@@ -478,12 +468,9 @@
     Handle<FixedArray> old_code_map(native_context->osr_code_table(), isolate);
     entry = native_context->SearchOptimizedCodeMapEntry(*shared, osr_ast_id);
     if (entry >= 0) {
-      // Just set the code and literals of the entry.
+      // Just set the code of the entry.
       Handle<WeakCell> code_cell = isolate->factory()->NewWeakCell(code);
       old_code_map->set(entry + kCachedCodeOffset, *code_cell);
-      Handle<WeakCell> literals_cell =
-          isolate->factory()->NewWeakCell(literals);
-      old_code_map->set(entry + kLiteralsOffset, *literals_cell);
       return;
     }
 
@@ -507,12 +494,10 @@
   }
 
   Handle<WeakCell> code_cell = isolate->factory()->NewWeakCell(code);
-  Handle<WeakCell> literals_cell = isolate->factory()->NewWeakCell(literals);
   Handle<WeakCell> shared_cell = isolate->factory()->NewWeakCell(shared);
 
   new_code_map->set(entry + kSharedOffset, *shared_cell);
   new_code_map->set(entry + kCachedCodeOffset, *code_cell);
-  new_code_map->set(entry + kLiteralsOffset, *literals_cell);
   new_code_map->set(entry + kOsrAstIdOffset, Smi::FromInt(osr_ast_id.ToInt()));
 
 #ifdef DEBUG
@@ -523,8 +508,6 @@
     DCHECK(cell->cleared() ||
            (cell->value()->IsCode() &&
             Code::cast(cell->value())->kind() == Code::OPTIMIZED_FUNCTION));
-    cell = WeakCell::cast(new_code_map->get(i + kLiteralsOffset));
-    DCHECK(cell->cleared() || cell->value()->IsFixedArray());
     DCHECK(new_code_map->get(i + kOsrAstIdOffset)->IsSmi());
   }
 #endif
@@ -565,8 +548,6 @@
       code_map->set(dst + kSharedOffset, code_map->get(src + kSharedOffset));
       code_map->set(dst + kCachedCodeOffset,
                     code_map->get(src + kCachedCodeOffset));
-      code_map->set(dst + kLiteralsOffset,
-                    code_map->get(src + kLiteralsOffset));
       code_map->set(dst + kOsrAstIdOffset,
                     code_map->get(src + kOsrAstIdOffset));
     }