[ignition] Add global lookup fast path to generated turbofan graph

src/compiler/bytecode-graph-builder.h

Index: src/compiler/bytecode-graph-builder.h
diff --git a/src/compiler/bytecode-graph-builder.h b/src/compiler/bytecode-graph-builder.h
index 50162ed3e35ae2c482c390ac36988cdc5c4e2291..53582f73d7fbb2d6401f13dd754733b6b38248a9 100644
--- a/src/compiler/bytecode-graph-builder.h
+++ b/src/compiler/bytecode-graph-builder.h
@@ -124,7 +124,7 @@ class BytecodeGraphBuilder {
   void BuildCreateLiteral(const Operator* op);
   void BuildCreateArguments(CreateArgumentsType type);
   Node* BuildLoadContextSlot();
-  Node* BuildLoadGlobal(TypeofMode typeof_mode);
+  Node* BuildLoadGlobal(uint32_t feedback_slot_index, TypeofMode typeof_mode);
   void BuildStoreGlobal(LanguageMode language_mode);
   Node* BuildNamedLoad();
   void BuildNamedStore(LanguageMode language_mode);
@@ -145,6 +145,9 @@ class BytecodeGraphBuilder {
   void BuildForInNext();
   void BuildInvokeIntrinsic();
 
+  // Check the context chain for extensions, for lookup fast paths.
+  Environment* CheckContextExtensions(uint32_t depth);
+
   // Helper function to create binary operation hint from the recorded
   // type feedback.
   BinaryOperationHint GetBinaryOperationHint(int operand_index);