Noopt work: populate empty ICData of getters and setters with function's own class if that getter/s…

runtime/vm/flow_graph_inliner.cc

Index: runtime/vm/flow_graph_inliner.cc
diff --git a/runtime/vm/flow_graph_inliner.cc b/runtime/vm/flow_graph_inliner.cc
index 5e79772160bd5e5fcc734ec42903698306736512..a433948348df769fa1cb40075c8a4f7d33a6710c 100644
--- a/runtime/vm/flow_graph_inliner.cc
+++ b/runtime/vm/flow_graph_inliner.cc
@@ -59,6 +59,7 @@ DEFINE_FLAG(bool, enable_inlining_annotations, false,
 
 DECLARE_FLAG(bool, compiler_stats);
 DECLARE_FLAG(int, deoptimization_counter_threshold);
+DECLARE_FLAG(bool, polymorphic_with_deopt);
 DECLARE_FLAG(bool, print_flow_graph);
 DECLARE_FLAG(bool, print_flow_graph_optimized);
 DECLARE_FLAG(bool, verify_compiler);
@@ -1134,6 +1135,8 @@ class CallSiteInliner : public ValueObject {
     for (intptr_t call_idx = 0; call_idx < call_info.length(); ++call_idx) {
       PolymorphicInstanceCallInstr* call = call_info[call_idx].call;
       if (call->with_checks()) {
+        // PolymorphicInliner introduces deoptimization paths.
+        if (!FLAG_polymorphic_with_deopt) return;
         const Function& cl = call_info[call_idx].caller();
         intptr_t caller_inlining_id =
             call_info[call_idx].caller_graph->inlining_id();