Merged: Don't call FastNewFunctionContextStub if context is bigger than kMaxRegularHeapObjectSize.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index c6b6280bc5a0d9ef00a0b7593b45a36a83ac3b32..db5a596b85ba8e6bf5faae6ba309aa50517c2a3f 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -2917,7 +2917,12 @@ void BytecodeGenerator::BuildNewLocalActivationContext() {
         .CallRuntime(Runtime::kPushModuleContext, args);
   } else {
     int slot_count = scope->num_heap_slots() - Context::MIN_CONTEXT_SLOTS;
-    builder()->CreateFunctionContext(slot_count);
+    if (slot_count <= FastNewFunctionContextStub::kMaximumSlots) {
+      builder()->CreateFunctionContext(slot_count);
+    } else {
+      builder()->CallRuntime(Runtime::kNewFunctionContext,
+                             Register::function_closure());
+    }
   }
 }