Improve moves of Smi and null objects. Add result cid to List constructor calls. Add tracing of inl…

runtime/vm/code_generator.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/code_generator.h"
 
 #include "vm/assembler_macros.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
@@ skipping 14 matching lines @@
 #include "vm/verifier.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, deoptimize_alot, false,
     "Deoptimizes all live frames when we are about to return to Dart code from"
     " native entries.");
 DEFINE_FLAG(bool, inline_cache, true, "Enable inline caches");
 DEFINE_FLAG(bool, trace_deopt, false, "Trace deoptimization");
 DEFINE_FLAG(bool, trace_ic, false, "Trace IC handling");
+DEFINE_FLAG(bool, trace_ic_miss_in_optimized, false,
+    "Trace IC miss in optimized code");
 DEFINE_FLAG(bool, trace_patching, false, "Trace patching of code.");
 DEFINE_FLAG(bool, trace_runtime_calls, false, "Trace runtime calls");
 DEFINE_FLAG(int, optimization_counter_threshold, 2000,
     "Function's usage-counter value before it is optimized, -1 means never");
 DECLARE_FLAG(bool, enable_type_checks);
 DECLARE_FLAG(bool, trace_type_checks);
 DECLARE_FLAG(bool, report_usage_count);
 DECLARE_FLAG(int, deoptimization_counter_threshold);
 DEFINE_FLAG(charp, optimization_filter, NULL, "Optimize only named function");
 DEFINE_FLAG(bool, trace_failed_optimization_attempts, false,
@@ skipping 868 matching lines @@
     ic_data.AddReceiverCheck(Class::Handle(args[0]->clazz()).id(),
                              target_function);
   } else {
     GrowableArray<intptr_t> class_ids(args.length());
     ASSERT(ic_data.num_args_tested() == args.length());
     for (intptr_t i = 0; i < args.length(); i++) {
       class_ids.Add(Class::Handle(args[i]->clazz()).id());
     }
     ic_data.AddCheck(class_ids, target_function);
   }
+  if (FLAG_trace_ic_miss_in_optimized) {
+    const Code& caller = Code::Handle(Code::LookupCode(caller_frame->pc()));
+    if (caller.is_optimized()) {
+      OS::Print("IC miss in optimized code; call %s -> %s\n",
+          Function::Handle(caller.function()).ToCString(),
+          target_function.ToCString());
+    }
+  }
   if (FLAG_trace_ic) {
     OS::Print("InlineCacheMissHandler %d call at %#"Px"' "
               "adding <%s> id:%"Pd" -> <%s>\n",
         args.length(),
         caller_frame->pc(),
         Class::Handle(receiver.clazz()).ToCString(),
         Class::Handle(receiver.clazz()).id(),
         target_function.ToCString());
   }
   return target_function.raw();
@@ skipping 760 matching lines @@
                 current->slot(),
                 current->value());
     }
 
     delete current;
   }
 }
 
 
 }  // namespace dart