| /* |
| * Copyright 2008 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dev.jjs.impl.gflow.liveness; |
| |
| import com.google.gwt.dev.jjs.impl.gflow.CfgIntegratedAnalysisTestBase; |
| import com.google.gwt.dev.jjs.impl.gflow.IntegratedAnalysis; |
| import com.google.gwt.dev.jjs.impl.gflow.cfg.Cfg; |
| import com.google.gwt.dev.jjs.impl.gflow.cfg.CfgEdge; |
| import com.google.gwt.dev.jjs.impl.gflow.cfg.CfgNode; |
| import com.google.gwt.dev.jjs.impl.gflow.cfg.CfgTransformer; |
| |
| /** |
| * |
| */ |
| public class LivenessTransformationTest extends CfgIntegratedAnalysisTestBase<LivenessAssumption> { |
| @Override |
| protected void setUp() throws Exception { |
| forward = false; |
| super.setUp(); |
| } |
| |
| public void testLinearStatements() throws Exception { |
| transform("void", "int i = 1; int j = 2;").into( |
| "int i;", |
| "int j;"); |
| } |
| |
| public void testUsage() throws Exception { |
| transform("void", "int i = 1; int j = i;").into( |
| "int i = 1;", |
| "int j;"); |
| |
| transform("int", "int i = 1; int j = 2; return i;").into( |
| "int i = 1;", |
| "int j;", |
| "return i;"); |
| } |
| |
| public void testDeadAssignments() throws Exception { |
| transform("void", "int i = 1; i = 2; i = 3; int j = i;").into( |
| "int i;", |
| "i = 3;", |
| "int j;"); |
| } |
| |
| public void testSomeDeadAssignment() throws Exception { |
| transform("int", "int i = 1; i = 2; i = 3; int j = i; return j;").into( |
| "int i;", |
| "i = 3;", |
| "int j = i;", |
| "return j;"); |
| } |
| |
| public void testFieldAssignment() throws Exception { |
| addSnippetClassDecl("static int i;"); |
| |
| transform("void", "i = 1;").into("EntryPoint.i = 1;"); |
| } |
| |
| public void testSideEffects() throws Exception { |
| addSnippetClassDecl("static int foo() { return 0; };"); |
| |
| transform("void", "int i = foo();").into( |
| "EntryPoint.foo();", |
| "int i;"); |
| } |
| |
| public void testMultiAssignments() throws Exception { |
| transform("void", "int i = 1, j = 1; i = j = 2;").into( |
| "int i;", |
| "int j;"); |
| } |
| |
| @Override |
| protected IntegratedAnalysis<CfgNode<?>, CfgEdge, CfgTransformer, Cfg, LivenessAssumption> createIntegratedAnalysis() { |
| return new LivenessAnalysis(); |
| } |
| } |