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 a57399cf6f046e4ee3150e55293a78fa027114d1..6ff43a41707fe4281df987e3c4877526cd3d0291 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -3168,7 +3168,12 @@ void BytecodeGenerator::VisitNewLocalFunctionContext() {
         .CallRuntime(Runtime::kNewScriptContext, closure, 2);
   } 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(), 1);
+    }
   }
   execution_result()->SetResultInAccumulator();
 }