Detect missing inliner

runtime/vm/compiler.cc

Index: runtime/vm/compiler.cc
diff --git a/runtime/vm/compiler.cc b/runtime/vm/compiler.cc
index 491b57111b6186f7ec4de1ca443f4250e0b9d9b4..deb5af3975fd5b9b36e2aa6948673f017aae5dca 100644
--- a/runtime/vm/compiler.cc
+++ b/runtime/vm/compiler.cc
@@ -780,6 +780,10 @@ static bool CompileParsedFunctionHelper(CompilationPipeline* pipeline,
             const Field* field = (*flow_graph->guarded_fields())[i];
             field->RegisterDependentCode(code);
           }
+
+          if (FLAG_trace_inlining_intervals) {
+            code.DumpInlinedIntervals();
+          }
         } else {  // not optimized.
           if (!Compiler::always_optimize() &&
               (function.ic_data_array() == Array::null())) {