Refactor removeRange.

sdk/lib/_internal/compiler/implementation/ssa/nodes.dart

 // 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.
 
 part of ssa;
 
 abstract class HVisitor<R> {
   R visitAdd(HAdd node);
   R visitBailoutTarget(HBailoutTarget node);
   R visitBitAnd(HBitAnd node);
@@ skipping 653 matching lines @@
   }
 
   void removeDominatedBlock(HBasicBlock block) {
     assert(isClosed());
     assert(id != null && block.id != null);
     int index = dominatedBlocks.indexOf(block);
     assert(index >= 0);
     if (index == dominatedBlocks.length - 1) {
       dominatedBlocks.removeLast();
     } else {
-      dominatedBlocks.removeRange(index, 1);
+      dominatedBlocks.removeRange(index, index + 1);
     }
     assert(identical(block.dominator, this));
     block.dominator = null;
   }
 
   void assignCommonDominator(HBasicBlock predecessor) {
     assert(isClosed());
     if (dominator == null) {
       // If this basic block doesn't have a dominator yet we use the
       // given predecessor as the dominator.
@@ skipping 1953 matching lines @@
   HBasicBlock get start => expression.start;
   HBasicBlock get end {
     // We don't create a switch block if there are no cases.
     assert(!statements.isEmpty);
     return statements.last.end;
   }
 
   bool accept(HStatementInformationVisitor visitor) =>
       visitor.visitSwitchInfo(this);
 }