Trace CHA optimizations (where, when, why)

runtime/vm/il_printer.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/il_printer.h"
 
 #include "vm/flow_graph_range_analysis.h"
 #include "vm/intermediate_language.h"
 #include "vm/os.h"
 #include "vm/parser.h"
@@ skipping 150 matching lines @@
                          eliminated ? "more" : "not more",
                          String::Handle(dst_type.Name()).ToCString(),
                          dst_name.ToCString());
 }
 
 
 void CompileType::PrintTo(BufferFormatter* f) const {
   const char* type_name = "?";
   if ((cid_ != kIllegalCid) && (cid_ != kDynamicCid)) {
     const Class& cls =
-      Class::Handle(Isolate::Current()->class_table()->At(cid_));
+        Class::Handle(Isolate::Current()->class_table()->At(cid_));
     type_name = String::Handle(cls.PrettyName()).ToCString();
   } else if (type_ != NULL &&
              !type_->Equals(Type::Handle(Type::DynamicType()))) {
     type_name = type_->ToCString();
   } else if (!is_nullable()) {
     type_name = "!null";
   }
 
   f->Print("T{%s%s}", type_name, is_nullable_ ? "?" : "");
 }
@@ skipping 1030 matching lines @@
 }
 
 const char* Environment::ToCString() const {
   char buffer[1024];
   BufferFormatter bf(buffer, 1024);
   PrintTo(&bf);
   return Thread::Current()->zone()->MakeCopyOfString(buffer);
 }
 
 }  // namespace dart