[turbofan] reduce allocations outside of pipeline

test/cctest/compiler/codegen-tester.h

Index: test/cctest/compiler/codegen-tester.h
diff --git a/test/cctest/compiler/codegen-tester.h b/test/cctest/compiler/codegen-tester.h
index 6aa5bae56069a182b07f5e8c69957a9be23e84be..6af5c78aa804684ba45ccc208f90e445a116acc6 100644
--- a/test/cctest/compiler/codegen-tester.h
+++ b/test/cctest/compiler/codegen-tester.h
@@ -66,7 +66,7 @@ class MachineAssemblerTester : public HandleAndZoneScope,
       CallDescriptor* call_descriptor = this->call_descriptor();
       Graph* graph = this->graph();
       CompilationInfo info(graph->zone()->isolate(), graph->zone());
-      Linkage linkage(&info, call_descriptor);
+      Linkage linkage(graph->zone(), call_descriptor);
       Pipeline pipeline(&info);
       code_ = pipeline.GenerateCodeForMachineGraph(&linkage, graph, schedule);
     }