Delete CPS IR

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

Index: pkg/compiler/lib/src/cps_ir/optimizers.dart
diff --git a/pkg/compiler/lib/src/cps_ir/optimizers.dart b/pkg/compiler/lib/src/cps_ir/optimizers.dart
deleted file mode 100644
index 3e22e10d9f093a853c6f1b726205ff462d1c830e..0000000000000000000000000000000000000000
--- a/pkg/compiler/lib/src/cps_ir/optimizers.dart
+++ /dev/null
@@ -1,68 +0,0 @@
-// 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.cps_ir.optimizers;
-
-import '../common/names.dart';
-import '../constants/values.dart';
-import '../universe/selector.dart';
-import 'cps_ir_nodes.dart';
-
-export 'backward_null_check_remover.dart' show BackwardNullCheckRemover;
-export 'bounds_checker.dart' show BoundsChecker;
-export 'eagerly_load_statics.dart' show EagerlyLoadStatics;
-export 'gvn.dart' show GVN;
-export 'inline.dart' show Inliner;
-export 'insert_refinements.dart' show InsertRefinements;
-export 'loop_invariant_branch.dart' show LoopInvariantBranchMotion;
-export 'mutable_ssa.dart' show MutableVariableEliminator;
-export 'optimize_interceptors.dart' show OptimizeInterceptors;
-export 'parent_visitor.dart' show ParentVisitor;
-export 'path_based_optimizer.dart' show PathBasedOptimizer;
-export 'redundant_join.dart' show RedundantJoinEliminator;
-export 'redundant_phi.dart' show RedundantPhiEliminator;
-export 'redundant_refinement.dart' show RedundantRefinementEliminator;
-export 'scalar_replacement.dart' show ScalarReplacer;
-export 'shrinking_reductions.dart' show ShrinkingReducer;
-export 'type_propagation.dart' show TypePropagator;
-export 'update_refinements.dart' show UpdateRefinements;
-export 'use_field_initializers.dart' show UseFieldInitializers;
-
-/// An optimization pass over the CPS IR.
-abstract class Pass {
-  /// Applies optimizations to root, rewriting it in the process.
-  void rewrite(FunctionDefinition root);
-
-  String get passName;
-}
-
-// Shared code between optimizations
-
-/// Returns true if [value] is false, null, 0, -0, NaN, or the empty string.
-bool isFalsyConstant(ConstantValue value) {
-  return value.isFalse ||
-      value.isNull ||
-      value.isZero ||
-      value.isMinusZero ||
-      value.isNaN ||
-      value is StringConstantValue && value.primitiveValue.isEmpty;
-}
-
-/// Returns true if [value] satisfies a branching condition with the
-/// given strictness.
-///
-/// For non-strict, this is the opposite of [isFalsyConstant].
-bool isTruthyConstant(ConstantValue value, {bool strict: false}) {
-  return strict ? value.isTrue : !isFalsyConstant(value);
-}
-
-/// Selectors that do not throw when invoked on the null value.
-final List<Selector> selectorsOnNull = <Selector>[
-  Selectors.equals,
-  Selectors.hashCode_,
-  Selectors.runtimeType_,
-  Selectors.toString_,
-  Selectors.toStringGetter,
-  Selectors.noSuchMethodGetter
-];