Range feedback for binary integer operations.

runtime/vm/assembler_arm64.h

Index: runtime/vm/assembler_arm64.h
diff --git a/runtime/vm/assembler_arm64.h b/runtime/vm/assembler_arm64.h
index f08096118d03c8088ca1a1bf085a9615223eb2e1..172851c1758a8f0975bed87a7ea7b544005a4c1d 100644
--- a/runtime/vm/assembler_arm64.h
+++ b/runtime/vm/assembler_arm64.h
@@ -633,6 +633,9 @@ class Assembler : public ValueObject {
   void orr(Register rd, Register rn, Operand o) {
     EmitLogicalShiftOp(ORR, rd, rn, o, kDoubleWord);
   }
+  void orrw(Register rd, Register rn, Operand o) {
+    EmitLogicalShiftOp(ORR, rd, rn, o, kWord);
+  }
   void orn(Register rd, Register rn, Operand o) {
     EmitLogicalShiftOp(ORN, rd, rn, o, kDoubleWord);
   }
@@ -1338,6 +1341,18 @@ class Assembler : public ValueObject {
   void CompareClassId(Register object, intptr_t class_id, Register pp);
   void LoadTaggedClassIdMayBeSmi(Register result, Register object);
 
+  void ComputeRange(Register result,
+                    Register value,
+                    Register scratch,
+                    Label* miss);
+
+  void UpdateRangeFeedback(Register value,
+                           intptr_t idx,
+                           Register ic_data,
+                           Register scratch1,
+                           Register scratch2,
+                           Label* miss);
+
   void EnterFrame(intptr_t frame_size);
   void LeaveFrame();