Range feedback for binary integer operations.

runtime/vm/assembler_arm.h

Index: runtime/vm/assembler_arm.h
diff --git a/runtime/vm/assembler_arm.h b/runtime/vm/assembler_arm.h
index 4b479a96a70ae9073902983372f475146246b4fe..07d1bdb52d9f90be0d48a3f4e52227301e835316 100644
--- a/runtime/vm/assembler_arm.h
+++ b/runtime/vm/assembler_arm.h
@@ -711,6 +711,18 @@ class Assembler : public ValueObject {
   void CompareClassId(Register object, intptr_t class_id, Register scratch);
   void LoadTaggedClassIdMayBeSmi(Register result, Register object);
 
+  void ComputeRange(Register result,

[zra, 2014/12/11 04:29:33]

Should this be private?

[Vyacheslav Egorov (Google), 2014/12/11 13:06:25]

If I make it private I can't easily test this without allocating ICData. 

+                    Register value,
+                    Register scratch,
+                    Label* miss);
+
+  void UpdateRangeFeedback(Register value,
+                           intptr_t idx,
+                           Register ic_data,
+                           Register scratch1,
+                           Register scratch2,
+                           Label* miss);
+
   void LoadWordFromPoolOffset(Register rd, int32_t offset, Condition cond = AL);
   void LoadFromOffset(OperandSize type,
                       Register reg,