Improve code for checked instance calls (polymorphic calls) and expand printing of PolymorphicInsta…

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/intermediate_language.h"
 #include "vm/os.h"
 
 namespace dart {
@@ skipping 118 matching lines @@
 
 void InstanceCallComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", function_name().ToCString());
   for (intptr_t i = 0; i < ArgumentCount(); ++i) {
     f->Print(", ");
     ArgumentAt(i)->PrintTo(f);
   }
 }
 
 
+void PolymorphicInstanceCallComp::PrintTo(BufferFormatter* f) const {
+  f->Print("%s(", DebugName());
+  instance_call()->PrintOperandsTo(f);
+  f->Print(") ");
+  intptr_t len = HasICData() ? ic_data()->NumberOfChecks() : 0;
+  f->Print("[%d: ", len);
+  for (intptr_t i = 0; i < len; i++) {
+    intptr_t class_id = ic_data()->GetReceiverClassIdAt(i);
+    const Class& cls =
+        Class::Handle(Isolate::Current()->class_table()->At(class_id));
+    if (i > 0) {
+      f->Print(", ");
+    }
+    f->Print("%s", cls.ToCString());
+  }
+  f->Print("]");
+}
+
 void StrictCompareComp::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s, ", Token::Str(kind()));
   left()->PrintTo(f);
   f->Print(", ");
   right()->PrintTo(f);
 }
 
 
 void EqualityCompareComp::PrintOperandsTo(BufferFormatter* f) const {
   left()->PrintTo(f);
@@ skipping 516 matching lines @@
 void Environment::PrintTo(BufferFormatter* f) const {
   f->Print(" env={ ");
   for (intptr_t i = 0; i < values_.length(); ++i) {
     if (i > 0) f->Print(", ");
     values_[i]->PrintTo(f);
   }
   f->Print(" }");
 }
 
 }  // namespace dart