VM: Remove _leftShiftWithMask32.

runtime/vm/flow_graph_builder.cc

Index: runtime/vm/flow_graph_builder.cc
diff --git a/runtime/vm/flow_graph_builder.cc b/runtime/vm/flow_graph_builder.cc
index a4214773d4eded1a2d553d8f84d90b774888dda3..69f7f16a49dfc9bfa4046ba2b1ed65ce8c705f43 100644
--- a/runtime/vm/flow_graph_builder.cc
+++ b/runtime/vm/flow_graph_builder.cc
@@ -1460,54 +1460,6 @@ void ValueGraphVisitor::VisitBinaryOpNode(BinaryOpNode* node) {
 }
 
 
-static const String& BinaryOpAndMaskName(BinaryOpNode* node) {
-  if (node->kind() == Token::kSHL) {
-    return Library::PrivateCoreLibName(Symbols::_leftShiftWithMask32());
-  }
-  UNIMPLEMENTED();
-  return String::ZoneHandle(Thread::Current()->zone(), String::null());
-}
-
-
-// <Expression> :: BinaryOp { kind:  Token::Kind
-//                            left:  <Expression>
-//                            right: <Expression>
-//                            mask32: constant }
-void EffectGraphVisitor::VisitBinaryOpWithMask32Node(
-    BinaryOpWithMask32Node* node) {
-  ASSERT((node->kind() != Token::kAND) && (node->kind() != Token::kOR));
-  ValueGraphVisitor for_left_value(owner());
-  node->left()->Visit(&for_left_value);
-  Append(for_left_value);
-  PushArgumentInstr* push_left = PushArgument(for_left_value.value());
-
-  ValueGraphVisitor for_right_value(owner());
-  node->right()->Visit(&for_right_value);
-  Append(for_right_value);
-  PushArgumentInstr* push_right = PushArgument(for_right_value.value());
-
-  Value* mask_value = Bind(new(Z) ConstantInstr(
-      Integer::ZoneHandle(Z, Integer::New(node->mask32(), Heap::kOld))));
-  PushArgumentInstr* push_mask = PushArgument(mask_value);
-
-  ZoneGrowableArray<PushArgumentInstr*>* arguments =
-      new(Z) ZoneGrowableArray<PushArgumentInstr*>(3);
-  arguments->Add(push_left);
-  arguments->Add(push_right);
-  // Call to special method 'BinaryOpAndMaskName(node)'.
-  arguments->Add(push_mask);
-  const intptr_t kNumArgsChecked = 2;
-  InstanceCallInstr* call = new(Z) InstanceCallInstr(node->token_pos(),
-                                                     BinaryOpAndMaskName(node),
-                                                     Token::kILLEGAL,
-                                                     arguments,
-                                                     Object::null_array(),
-                                                     kNumArgsChecked,
-                                                     owner()->ic_data_array());
-  ReturnDefinition(call);
-}
-
-
 void EffectGraphVisitor::BuildTypecheckPushArguments(
     TokenPosition token_pos,
     PushArgumentInstr** push_instantiator_type_arguments_result) {