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

runtime/vm/flow_graph_compiler_mips.cc

Index: runtime/vm/flow_graph_compiler_mips.cc
diff --git a/runtime/vm/flow_graph_compiler_mips.cc b/runtime/vm/flow_graph_compiler_mips.cc
index 9dd8859ed50225bfa37f4828ff7439bc0d34112c..ca0be6215a3cb61c39844aad401e9ae413d19a61 100644
--- a/runtime/vm/flow_graph_compiler_mips.cc
+++ b/runtime/vm/flow_graph_compiler_mips.cc
@@ -1042,6 +1042,13 @@ void FlowGraphCompiler::EmitFrameEntry() {
 //   S4: 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.
@@ -1049,8 +1056,7 @@ void FlowGraphCompiler::CompileGraph() {
   }
 
   EmitFrameEntry();
-
-  const Function& function = parsed_function().function();
+  ASSERT(assembler()->constant_pool_allowed());
 
   const int num_fixed_params = function.num_fixed_parameters();
   const int num_copied_params = parsed_function().num_copied_params();