Remove default monomorphic check code from functions and stubs that do not need it.

runtime/vm/flow_graph_compiler_arm.cc

Index: runtime/vm/flow_graph_compiler_arm.cc
diff --git a/runtime/vm/flow_graph_compiler_arm.cc b/runtime/vm/flow_graph_compiler_arm.cc
index 488b475e324233b5c303220be9506fce9f04d96e..bc1ebced22ec273007d2e5c3b63e13fdbf75941e 100644
--- a/runtime/vm/flow_graph_compiler_arm.cc
+++ b/runtime/vm/flow_graph_compiler_arm.cc
@@ -1025,6 +1025,13 @@ void FlowGraphCompiler::EmitFrameEntry() {
 //   R4: arguments descriptor array.
 void FlowGraphCompiler::CompileGraph() {
   InitCompiler();
+  const Function& function = parsed_function().function();
+
+#ifdef DART_PRECOMPILER
+  if (function.IsDynamicFunction()) {
+    __ MonomorphicCheckedEntry();
+  }
+#endif  // DART_PRECOMPILER
 
   if (TryIntrinsify()) {
     // Skip regular code generation.
@@ -1034,8 +1041,6 @@ void FlowGraphCompiler::CompileGraph() {
   EmitFrameEntry();
   ASSERT(assembler()->constant_pool_allowed());
 
-  const Function& function = parsed_function().function();
-
   const int num_fixed_params = function.num_fixed_parameters();
   const int num_copied_params = parsed_function().num_copied_params();
   const int num_locals = parsed_function().num_stack_locals();