Allow dispatch to use a range of Class-ids in tests

runtime/vm/intermediate_language.h

Index: runtime/vm/intermediate_language.h
diff --git a/runtime/vm/intermediate_language.h b/runtime/vm/intermediate_language.h
index 65a16c6eac5bdeba6dcc949d68e309c4ca0a9e58..628fa5fb7684f6b0b51988bcab2d124ae83c22b7 100644
--- a/runtime/vm/intermediate_language.h
+++ b/runtime/vm/intermediate_language.h
@@ -2777,6 +2777,7 @@ class PolymorphicInstanceCallInstr : public TemplateDefinition<0, Throws> {
         complete_(complete) {
     ASSERT(instance_call_ != NULL);
     ASSERT(!ic_data.NumberOfChecksIs(0));
+    InitializeIcCount();
   }
 
   InstanceCallInstr* instance_call() const { return instance_call_; }
@@ -2804,6 +2805,10 @@ class PolymorphicInstanceCallInstr : public TemplateDefinition<0, Throws> {
 
   const ICData& ic_data() const { return ic_data_; }
 
+  intptr_t total_ic_count() { return total_ic_count_; }

[Vyacheslav Egorov (Google), 2017/03/10 10:31:30]

This is an extremely confusing name. We need:

(a) a better name
(b) some comments on why this is needed as opposed to CallCount() above.

Please rearrange members in such a way that CallCount() and total_ic_count are
next to each other.

[erikcorry, 2017/03/10 13:30:01]

Done.

+
+  void set_total_ic_count(intptr_t count) { total_ic_count_ = count; }
+
   virtual bool CanDeoptimize() const { return true; }
 
   virtual EffectSet Effects() const { return EffectSet::All(); }
@@ -2819,6 +2824,9 @@ class PolymorphicInstanceCallInstr : public TemplateDefinition<0, Throws> {
   const ICData& ic_data_;
   bool with_checks_;
   const bool complete_;
+  intptr_t total_ic_count_;
+
+  void InitializeIcCount();
 
   DISALLOW_COPY_AND_ASSIGN(PolymorphicInstanceCallInstr);
 };