dart2js cps: Remove dart2dart from cps pipeline and clean up.

pkg/compiler/lib/src/cps_ir/cps_ir_tracer.dart

 // Copyright (c) 2014, 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.
 
 library dart2js.ir_tracer;
 
 import 'dart:async' show EventSink;
-
 import 'cps_ir_nodes.dart' as cps_ir hide Function;
 import '../tracer.dart';
 
 /**
  * If true, show LetCont expressions in output.
  */
 const bool IR_TRACE_LET_CONT = false;
 
 class IRTracer extends TracerUtil implements cps_ir.Visitor {
   EventSink<String> output;
 
   IRTracer(this.output);
 
   visit(cps_ir.Node node) => node.accept(this);
 
-  void traceGraph(String name, cps_ir.RootNode node) {
-    if (node.isEmpty) return; // Don't bother printing an empty trace.
+  void traceGraph(String name, cps_ir.FunctionDefinition node) {
     tag("cfg", () {
       printProperty("name", name);
 
       names = new Names();
       BlockCollector builder = new BlockCollector(names);
       builder.visit(node);
 
       for (Block block in builder.entries) {
         printBlock(block, entryPointParameters: node.parameters);
       }
       for (Block block in builder.cont2block.values) {
         printBlock(block);
       }
       names = null;
     });
   }
 
   // Temporary field used during tree walk
   Names names;
 
-  visitFieldDefinition(cps_ir.FieldDefinition node) {
-    unexpectedNode(node);
-  }
-
   visitFunctionDefinition(cps_ir.FunctionDefinition node) {
     unexpectedNode(node);
   }
 
-  visitConstructorDefinition(cps_ir.ConstructorDefinition node) {
-    unexpectedNode(node);
-  }
-
-  visitFieldInitializer(cps_ir.FieldInitializer node) {
-    unexpectedNode(node);
-  }
-
-  visitSuperInitializer(cps_ir.SuperInitializer node) {
-    unexpectedNode(node);
-  }
-
-  visitBody(cps_ir.Body node) {
-    unexpectedNode(node);
-  }
-
   // Bodies and initializers are not visited.  They contain continuations which
   // are found by a BlockCollector, then those continuations are processed by
   // this visitor.
   unexpectedNode(cps_ir.Node node) {
     throw 'The IR tracer reached an unexpected IR instruction: $node';
   }
 
 
   int countUses(cps_ir.Definition definition) {
     int count = 0;
@@ skipping 177 matching lines @@
   }
 
   visitSetMutableVariable(cps_ir.SetMutableVariable node) {
     String dummy = names.name(node);
     String variable = names.name(node.variable.definition);
     String value = formatReference(node.value);
     printStmt(dummy, 'SetMutableVariable $variable := $value');
     visit(node.body);
   }
 
-  visitDeclareFunction(cps_ir.DeclareFunction node) {
-    String dummy = names.name(node);
-    String variable = names.name(node.variable);
-    printStmt(dummy, 'DeclareFunction $variable');
-    visit(node.body);
-  }
-
   String formatReference(cps_ir.Reference ref) {
     cps_ir.Definition target = ref.definition;
     if (target is cps_ir.Continuation && target.isReturnContinuation) {
       return "return"; // Do not generate a name for the return continuation
     } else {
       return names.name(ref.definition);
     }
   }
 
   String formatPrimitive(cps_ir.Primitive p) => visit(p);
@@ skipping 67 matching lines @@
   visitIdentical(cps_ir.Identical node) {
     String left = formatReference(node.left);
     String right = formatReference(node.right);
     return "Identical($left, $right)";
   }
 
   visitInterceptor(cps_ir.Interceptor node) {
     return "Interceptor(${formatReference(node.input)})";
   }
 
-  visitReifyTypeVar(cps_ir.ReifyTypeVar node) {
-    return "ReifyTypeVar ${node.typeVariable.name}";
-  }
-
   visitCreateFunction(cps_ir.CreateFunction node) {
     return "CreateFunction ${node.definition.element.name}";
   }
 
   visitGetMutableVariable(cps_ir.GetMutableVariable node) {
     String variable = names.name(node.variable.definition);
     return 'GetMutableVariable $variable';
   }
 
   visitReadTypeVariable(cps_ir.ReadTypeVariable node) {
@@ skipping 87 matching lines @@
     Block block = cont2block[c];
     if (block == null) {
       block = new Block(names.name(c), c.parameters, c.body);
       cont2block[c] = block;
     }
     return block;
   }
 
   visit(cps_ir.Node node) => node.accept(this);
 
-  visitFieldDefinition(cps_ir.FieldDefinition node) {
-    visit(node.body);
-  }
-
   visitFunctionDefinition(cps_ir.FunctionDefinition node) {
-    visit(node.body);
-  }
-
-  visitConstructorDefinition(cps_ir.ConstructorDefinition node) {
-    node.initializers.forEach(visit);
-    visit(node.body);
-  }
-
-  visitBody(cps_ir.Body node) {
     currentBlock = new Block(names.name(node), [], node.body);
     entries.add(currentBlock);
     visit(node.body);
   }
 
-  visitFieldInitializer(cps_ir.FieldInitializer node) {
-    visit(node.body);
-  }
-
-  visitSuperInitializer(cps_ir.SuperInitializer node) {
-    node.arguments.forEach(visit);
-  }
-
   visitLetPrim(cps_ir.LetPrim exp) {
     visit(exp.body);
   }
 
   visitLetCont(cps_ir.LetCont exp) {
     exp.continuations.forEach(visit);
     visit(exp.body);
   }
 
   visitLetHandler(cps_ir.LetHandler exp) {
@@ skipping 51 matching lines @@
   }
 
   visitSetStatic(cps_ir.SetStatic exp) {
     visit(exp.body);
   }
 
   visitGetLazyStatic(cps_ir.GetLazyStatic exp) {
     addEdgeToContinuation(exp.continuation);
   }
 
-  visitDeclareFunction(cps_ir.DeclareFunction exp) {
-    visit(exp.body);
-  }
-
   visitBranch(cps_ir.Branch exp) {
     cps_ir.Continuation trueTarget = exp.trueContinuation.definition;
     if (!trueTarget.isReturnContinuation) {
       currentBlock.addEdgeTo(getBlock(trueTarget));
     }
     cps_ir.Continuation falseTarget = exp.falseContinuation.definition;
     if (!falseTarget.isReturnContinuation) {
       currentBlock.addEdgeTo(getBlock(falseTarget));
     }
   }
@@ skipping 17 matching lines @@
 
   visitLiteralList(cps_ir.LiteralList node) {
     unexpectedNode(node);
   }
   visitLiteralMap(cps_ir.LiteralMap node) {
     unexpectedNode(node);
   }
   visitConstant(cps_ir.Constant node) {
     unexpectedNode(node);
   }
-  visitReifyTypeVar(cps_ir.ReifyTypeVar node) {
-    unexpectedNode(node);
-  }
   visitCreateFunction(cps_ir.CreateFunction node) {
     unexpectedNode(node);
   }
   visitGetMutableVariable(cps_ir.GetMutableVariable node) {
     unexpectedNode(node);
   }
   visitParameter(cps_ir.Parameter node) {
     unexpectedNode(node);
   }
   visitMutableVariable(cps_ir.MutableVariable node) {
@@ skipping 34 matching lines @@
   }
 
   visitNonTailThrow(cps_ir.NonTailThrow node) {
     unexpectedNode(node);
   }
 
   visitCreateInvocationMirror(cps_ir.CreateInvocationMirror node) {
     unexpectedNode(node);
   }
 }