Range feedback for binary integer operations.

runtime/vm/assembler_x64.h

Index: runtime/vm/assembler_x64.h
diff --git a/runtime/vm/assembler_x64.h b/runtime/vm/assembler_x64.h
index 44d45960e009962f17747a99c432ac507964ac69..3fdde8c36b9fdb9d34bef1014c1da8565eb3f776 100644
--- a/runtime/vm/assembler_x64.h
+++ b/runtime/vm/assembler_x64.h
@@ -526,6 +526,7 @@ class Assembler : public ValueObject {
 
   void orl(Register dst, Register src);
   void orl(Register dst, const Immediate& imm);
+  void orl(const Address& dst, Register src);
 
   void xorl(Register dst, Register src);
 
@@ -829,6 +830,13 @@ class Assembler : public ValueObject {
     sarq(reg, Immediate(kSmiTagSize));
   }
 
+  void ComputeRange(Register result, Register value, Label* miss);
+  void UpdateRangeFeedback(Register value,
+                           intptr_t index,
+                           Register ic_data,
+                           Register scratch,
+                           Label* miss);
+
   int PreferredLoopAlignment() { return 16; }
   void Align(int alignment, intptr_t offset);
   void Bind(Label* label);