Fix some editor warnings.

lib/compiler/implementation/ssa/nodes.dart

Index: lib/compiler/implementation/ssa/nodes.dart
diff --git a/lib/compiler/implementation/ssa/nodes.dart b/lib/compiler/implementation/ssa/nodes.dart
index ee0543745d8de53a43f66ee8ef287079267753bc..c83191352f5d483f01059f61fdebcf10798141b3 100644
--- a/lib/compiler/implementation/ssa/nodes.dart
+++ b/lib/compiler/implementation/ssa/nodes.dart
@@ -2377,10 +2377,7 @@ class HLabeledBlockInformation implements HStatementInformation {
 
 class LoopTypeVisitor extends AbstractVisitor {
   const LoopTypeVisitor();
-  int visitNode(Node node) {
-    // TODO(lrn): Need a compiler object here.
-    compiler.internalError('visitNode should not be called', node: node);
-  }
+  int visitNode(Node node) => -1;

[karlklose, 2012/06/04 11:54:32]

NOT_A_LOOP?

[Lasse Reichstein Nielsen, 2012/06/04 12:09:17]

Done.

   int visitWhile(While node) => HLoopBlockInformation.WHILE_LOOP;
   int visitFor(For node) => HLoopBlockInformation.FOR_LOOP;
   int visitDoWhile(DoWhile node) => HLoopBlockInformation.DO_WHILE_LOOP;
@@ -2392,6 +2389,7 @@ class HLoopBlockInformation implements HStatementInformation {
   static final int FOR_LOOP = 1;
   static final int DO_WHILE_LOOP = 2;
   static final int FOR_IN_LOOP = 3;
+  static final int NOT_A_LOOP = -1;
 
   final int kind;
   final HExpressionInformation initializer;
@@ -2461,9 +2459,7 @@ class HAndOrBlockInformation implements HExpressionInformation {
 
   // We don't currently use HAndOrBlockInformation.
   HInstruction get conditionExpression() {
-    // TODO(lrn): Need a compiler object.
-    compiler.internalError('conditionExpression should not be called',
-                           instruction: this);
+    return null;
   }
   bool accept(HExpressionInformationVisitor visitor) =>
     visitor.visitAndOrInfo(this);