| // Copyright (c) 2019, the R8 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. |
| |
| package com.android.tools.r8.ir.optimize.switches; |
| |
| import com.android.tools.r8.TestBase; |
| import com.android.tools.r8.TestParameters; |
| import com.android.tools.r8.TestParametersCollection; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.Parameterized; |
| import org.junit.runners.Parameterized.Parameters; |
| import org.objectweb.asm.ClassWriter; |
| import org.objectweb.asm.FieldVisitor; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| |
| @RunWith(Parameterized.class) |
| public class SwitchMapCollectionWithoutStaticGetTest extends TestBase { |
| |
| private final TestParameters parameters; |
| |
| @Parameters(name = "{0}") |
| public static TestParametersCollection data() { |
| return getTestParameters().withAllRuntimesAndApiLevels().build(); |
| } |
| |
| public SwitchMapCollectionWithoutStaticGetTest(TestParameters parameters) { |
| this.parameters = parameters; |
| } |
| |
| @Test |
| public void test() throws Exception { |
| testForR8(parameters.getBackend()) |
| .addProgramClasses(TestClass.class, MyEnum.class) |
| .addProgramClassFileData(SwitchMapClassDump.dump()) |
| .addKeepMainRule(TestClass.class) |
| .setMinApi(parameters.getApiLevel()) |
| .compile() |
| .run(parameters.getRuntime(), TestClass.class) |
| .assertSuccessWithOutputLines("Hello world!"); |
| } |
| |
| static class TestClass { |
| |
| public static void main(String[] args) { |
| MyEnum x = System.currentTimeMillis() >= 0 ? MyEnum.A : MyEnum.B; |
| switch (x) { |
| case A: |
| System.out.println("Hello world!"); |
| break; |
| |
| case B: |
| throw new RuntimeException(); |
| } |
| } |
| } |
| |
| enum MyEnum { |
| A, |
| B |
| } |
| |
| /** |
| * The following is the javac generated switch map for {@link MyEnum} with changes documented |
| * below. |
| */ |
| static class SwitchMapClassDump implements Opcodes { |
| |
| public static byte[] dump() { |
| |
| ClassWriter classWriter = new ClassWriter(0); |
| FieldVisitor fieldVisitor; |
| MethodVisitor methodVisitor; |
| |
| classWriter.visit( |
| V1_8, |
| ACC_SUPER | ACC_SYNTHETIC, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$1", |
| null, |
| "java/lang/Object", |
| null); |
| |
| classWriter.visitSource("SwitchMapCollectionWithoutStaticGetTest.java", null); |
| |
| classWriter.visitOuterClass( |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest", |
| null, |
| null); |
| |
| classWriter.visitInnerClass( |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$1", |
| null, |
| null, |
| ACC_STATIC | ACC_SYNTHETIC); |
| |
| classWriter.visitInnerClass( |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest", |
| "MyEnum", |
| ACC_FINAL | ACC_STATIC | ACC_ENUM); |
| |
| { |
| fieldVisitor = |
| classWriter.visitField( |
| ACC_FINAL | ACC_STATIC | ACC_SYNTHETIC, |
| "$SwitchMap$com$android$tools$r8$ir$optimize$switches$SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "[I", |
| null, |
| null); |
| fieldVisitor.visitEnd(); |
| } |
| { |
| methodVisitor = classWriter.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null); |
| methodVisitor.visitCode(); |
| Label label0 = new Label(); |
| Label label1 = new Label(); |
| Label label2 = new Label(); |
| methodVisitor.visitTryCatchBlock(label0, label1, label2, "java/lang/NoSuchFieldError"); |
| Label label3 = new Label(); |
| Label label4 = new Label(); |
| Label label5 = new Label(); |
| methodVisitor.visitTryCatchBlock(label3, label4, label5, "java/lang/NoSuchFieldError"); |
| Label label6 = new Label(); |
| methodVisitor.visitLabel(label6); |
| methodVisitor.visitLineNumber(52, label6); |
| methodVisitor.visitMethodInsn( |
| INVOKESTATIC, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "values", |
| "()[Lcom/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum;", |
| false); |
| methodVisitor.visitInsn(ARRAYLENGTH); |
| methodVisitor.visitIntInsn(NEWARRAY, T_INT); |
| methodVisitor.visitInsn(DUP); // NEW: DUP instead of GETSTATIC below. |
| methodVisitor.visitFieldInsn( |
| PUTSTATIC, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$1", |
| "$SwitchMap$com$android$tools$r8$ir$optimize$switches$SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "[I"); |
| methodVisitor.visitLabel(label0); |
| // methodVisitor.visitFieldInsn(GETSTATIC, |
| // "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$1", |
| // "$SwitchMap$com$android$tools$r8$ir$optimize$switches$SwitchMapCollectionWithoutStaticGetTest$MyEnum", "[I"); |
| methodVisitor.visitFieldInsn( |
| GETSTATIC, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "A", |
| "Lcom/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum;"); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "ordinal", |
| "()I", |
| false); |
| methodVisitor.visitInsn(ICONST_1); |
| methodVisitor.visitInsn(IASTORE); |
| methodVisitor.visitLabel(label1); |
| methodVisitor.visitJumpInsn(GOTO, label3); |
| methodVisitor.visitLabel(label2); |
| methodVisitor.visitFrame( |
| Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/NoSuchFieldError"}); |
| methodVisitor.visitVarInsn(ASTORE, 0); |
| methodVisitor.visitLabel(label3); |
| methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null); |
| methodVisitor.visitFieldInsn( |
| GETSTATIC, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$1", |
| "$SwitchMap$com$android$tools$r8$ir$optimize$switches$SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "[I"); |
| methodVisitor.visitFieldInsn( |
| GETSTATIC, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "B", |
| "Lcom/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum;"); |
| methodVisitor.visitMethodInsn( |
| INVOKEVIRTUAL, |
| "com/android/tools/r8/ir/optimize/switches/SwitchMapCollectionWithoutStaticGetTest$MyEnum", |
| "ordinal", |
| "()I", |
| false); |
| methodVisitor.visitInsn(ICONST_2); |
| methodVisitor.visitInsn(IASTORE); |
| methodVisitor.visitLabel(label4); |
| Label label7 = new Label(); |
| methodVisitor.visitJumpInsn(GOTO, label7); |
| methodVisitor.visitLabel(label5); |
| methodVisitor.visitFrame( |
| Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/NoSuchFieldError"}); |
| methodVisitor.visitVarInsn(ASTORE, 0); |
| methodVisitor.visitLabel(label7); |
| methodVisitor.visitFrame(Opcodes.F_SAME, 0, null, 0, null); |
| methodVisitor.visitInsn(RETURN); |
| methodVisitor.visitMaxs(3, 1); |
| methodVisitor.visitEnd(); |
| } |
| classWriter.visitEnd(); |
| |
| return classWriter.toByteArray(); |
| } |
| } |
| } |