Add is_inlinable field to functions.

runtime/vm/flow_graph_inliner.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/flow_graph_inliner.h"
 
 #include "vm/compiler.h"
 #include "vm/flags.h"
 #include "vm/flow_graph.h"
 #include "vm/flow_graph_builder.h"
@@ skipping 23 matching lines @@
       : FlowGraphVisitor(flow_graph->postorder()),
         caller_graph_(flow_graph),
         next_ssa_temp_index_(flow_graph->max_virtual_register_number()),
         inlined_(false) { }
 
   bool TryInlining(const Function& function,
                    GrowableArray<Value*>* arguments,
                    Definition* call) {
     TRACE_INLINING(OS::Print("  => %s\n", function.ToCString()));
 
+    // Abort if the inlinable bit on the function is low.
+    if (!function.is_inlinable()) {
+      TRACE_INLINING(OS::Print("     Bailout: not inlinable\n"));
+      return false;
+    }
+
     // Abort if the callee has optional parameters.
     if (function.HasOptionalParameters()) {
       TRACE_INLINING(OS::Print("     Bailout: optional parameters\n"));
       return false;
     }
 
     // Assuming no optional parameters the actual/formal count should match.
     ASSERT(arguments->length() == function.num_fixed_parameters());
 
     // Abort if the callee has an intrinsic translation.
     if (Intrinsifier::CanIntrinsify(function)) {
+      function.set_is_inlinable(false);
       TRACE_INLINING(OS::Print("     Bailout: can intrinsify\n"));
       return false;
     }
 
     Isolate* isolate = Isolate::Current();
     // Save and clear IC data.
     const Array& prev_ic_data = Array::Handle(isolate->ic_data_array());
     isolate->set_ic_data_array(Array::null());
     // Save and clear deopt id.
     const intptr_t prev_deopt_id = isolate->deopt_id();
@@ skipping 17 matching lines @@
         isolate->set_ic_data_array(unoptimized_code.ExtractTypeFeedbackArray());
       }
 
       // Build the callee graph.
       FlowGraphBuilder builder(parsed_function);
       FlowGraph* callee_graph =
           builder.BuildGraph(FlowGraphBuilder::kValueContext);
 
       // Abort if the callee graph contains control flow.
       if (callee_graph->preorder().length() != 2) {
+        function.set_is_inlinable(false);
         isolate->set_long_jump_base(base);
         isolate->set_ic_data_array(prev_ic_data.raw());
         TRACE_INLINING(OS::Print("     Bailout: control flow\n"));
         return false;
       }
 
       // Compute SSA on the callee graph, catching bailouts.
       callee_graph->ComputeSSA(next_ssa_temp_index_);
       callee_graph->ComputeUseLists();
 
@@ skipping 141 matching lines @@
     if (FLAG_trace_inlining && FLAG_print_flow_graph) {
       OS::Print("After Inlining of %s\n", flow_graph_->
                 parsed_function().function().ToFullyQualifiedCString());
       FlowGraphPrinter printer(*flow_graph_);
       printer.PrintBlocks();
     }
   }
 }
 
 }  // namespace dart