[turbofan] Disable inline allocation of closures.

src/compiler/js-create-lowering.cc

Index: src/compiler/js-create-lowering.cc
diff --git a/src/compiler/js-create-lowering.cc b/src/compiler/js-create-lowering.cc
index a8ddb56378242327079d83176970c218be952759..1a4972f625fee918b5ca8661d0960a9fa4a37be7 100644
--- a/src/compiler/js-create-lowering.cc
+++ b/src/compiler/js-create-lowering.cc
@@ -751,6 +751,7 @@ Reduction JSCreateLowering::ReduceJSCreateArray(Node* node) {
 }
 
 Reduction JSCreateLowering::ReduceJSCreateClosure(Node* node) {
+  if (!FLAG_turbo_lower_create_closure) return NoChange();
   DCHECK_EQ(IrOpcode::kJSCreateClosure, node->opcode());
   CreateClosureParameters const& p = CreateClosureParametersOf(node->op());
   Handle<SharedFunctionInfo> shared = p.shared_info();