Small IL cleanup.

runtime/vm/flow_graph_optimizer.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/flow_graph_optimizer.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/flow_graph_compiler.h"
@@ skipping 1063 matching lines @@
   if ((ic_data.NumberOfChecks() == 0) || !ic_data.HasOneTarget()) {
     // No type feedback collected or multiple targets found.
     return false;
   }
   Function& target = Function::Handle();
   GrowableArray<intptr_t> class_ids;
   ic_data.GetCheckAt(0, &class_ids, &target);
   MethodRecognizer::Kind recognized_kind =
       MethodRecognizer::RecognizeKind(target);
 
-  if ((recognized_kind == MethodRecognizer::kDoubleToDouble) &&
-      (class_ids[0] == kDoubleCid)) {
-    DoubleToDoubleInstr* d2d_instr =
-        new DoubleToDoubleInstr(call->ArgumentAt(0)->value(), call);
-    call->ReplaceWith(d2d_instr, current_iterator());
-    RemovePushArguments(call);
-    return true;
-  }
-
   if ((recognized_kind == MethodRecognizer::kIntegerToDouble) &&
       (class_ids[0] == kSmiCid)) {
     SmiToDoubleInstr* s2d_instr = new SmiToDoubleInstr(call);
     call->ReplaceWith(s2d_instr, current_iterator());
     // Pushed arguments are not removed because SmiToDouble is implemented
     // as a call.
     return true;
   }
 
-  const intptr_t cid0 = class_ids[0];
-  if ((recognized_kind == MethodRecognizer::kIntegerToInteger) &&
-      ((cid0 == kSmiCid) || (cid0 == kMintCid) || (cid0 == kBigintCid))) {
-    // TODO(srdjan): implement also for mixed integer cids.
-    InsertBefore(call,
-                 new CheckSmiInstr(call->ArgumentAt(0)->value()->Copy(),
-                                   call->deopt_id()),
-                 call->env(),
-                 Definition::kEffect);
-    call->ReplaceUsesWith(call->ArgumentAt(0));
-    RemovePushArguments(call);
-    call->RemoveFromGraph();
-    return true;
-  }
-
   if ((recognized_kind == MethodRecognizer::kDoubleToInteger) &&
       (class_ids[0] == kDoubleCid)) {
     AddCheckClass(call, call->ArgumentAt(0)->value()->Copy());
     DoubleToIntegerInstr* d2int_instr =
         new DoubleToIntegerInstr(call->ArgumentAt(0)->value(), call);
     call->ReplaceWith(d2int_instr, current_iterator());
     RemovePushArguments(call);
     return true;
   }
 
@@ skipping 2174 matching lines @@
   const Object& value = instr->value()->definition()->constant_value();
   if (IsNonConstant(value)) {
     SetValue(instr, non_constant_);
   } else if (IsConstant(value)) {
     // TODO(kmillikin): Handle unary operations.
     SetValue(instr, non_constant_);
   }
 }
 
 
-void ConstantPropagator::VisitDoubleToDouble(DoubleToDoubleInstr* instr) {
-  const Object& value = instr->value()->definition()->constant_value();
-  if (IsNonConstant(value)) {
-    SetValue(instr, non_constant_);
-  } else if (IsConstant(value)) {
-    // TODO(kmillikin): Handle conversion.
-    SetValue(instr, non_constant_);
-  }
-}
-
-
 void ConstantPropagator::VisitSmiToDouble(SmiToDoubleInstr* instr) {
   // TODO(kmillikin): Handle conversion.
   SetValue(instr, non_constant_);
 }
 
 
 void ConstantPropagator::VisitDoubleToInteger(DoubleToIntegerInstr* instr) {
   // TODO(kmillikin): Handle conversion.
   SetValue(instr, non_constant_);
 }
@@ skipping 207 matching lines @@
 
   if (FLAG_trace_constant_propagation) {
     OS::Print("\n==== After constant propagation ====\n");
     FlowGraphPrinter printer(*graph_);
     printer.PrintBlocks();
   }
 }
 
 
 }  // namespace dart