VM: Remove collection of unused range feedback.

runtime/vm/assembler_arm64.cc

Index: runtime/vm/assembler_arm64.cc
diff --git a/runtime/vm/assembler_arm64.cc b/runtime/vm/assembler_arm64.cc
index 26c0b4ab67fb759692deceadf71c2c38fb43b219..004ae2148191ee5a0be867214001958d4ceff888 100644
--- a/runtime/vm/assembler_arm64.cc
+++ b/runtime/vm/assembler_arm64.cc
@@ -1036,51 +1036,6 @@ void Assembler::LoadTaggedClassIdMayBeSmi(Register result, Register object) {
 }
 
 
-void Assembler::ComputeRange(Register result,
-                             Register value,
-                             Register scratch,
-                             Label* not_mint) {
-  Label done, not_smi;
-  tsti(value, Immediate(kSmiTagMask));
-  b(&not_smi, NE);
-
-  AsrImmediate(scratch, value, 32);
-  LoadImmediate(result, ICData::kUint32RangeBit);
-  cmp(scratch, Operand(1));
-  b(&done, EQ);
-
-  neg(scratch, scratch);
-  add(result, scratch, Operand(ICData::kInt32RangeBit));
-  cmp(scratch, Operand(1));
-  LoadImmediate(TMP, ICData::kSignedRangeBit);
-  csel(result, result, TMP, LS);
-  b(&done);
-
-  Bind(&not_smi);
-  CompareClassId(value, kMintCid);
-  b(not_mint, NE);
-
-  LoadImmediate(result, ICData::kInt64RangeBit);
-  Bind(&done);
-}
-
-
-void Assembler::UpdateRangeFeedback(Register value,
-                                    intptr_t index,
-                                    Register ic_data,
-                                    Register scratch1,
-                                    Register scratch2,
-                                    Label* miss) {
-  ASSERT(ICData::IsValidRangeFeedbackIndex(index));
-  ComputeRange(scratch1, value, scratch2, miss);
-  ldr(scratch2, FieldAddress(ic_data, ICData::state_bits_offset()), kWord);
-  orrw(scratch2,
-       scratch2,
-       Operand(scratch1, LSL, ICData::RangeFeedbackShift(index)));
-  str(scratch2, FieldAddress(ic_data, ICData::state_bits_offset()), kWord);
-}
-
-
 // Frame entry and exit.
 void Assembler::ReserveAlignedFrameSpace(intptr_t frame_space) {
   // Reserve space for arguments and align frame before entering