| // Copyright (c) 2018, 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.graph; |
| |
| import com.android.tools.r8.cf.code.CfArithmeticBinop; |
| import com.android.tools.r8.cf.code.CfArrayLength; |
| import com.android.tools.r8.cf.code.CfArrayLoad; |
| import com.android.tools.r8.cf.code.CfArrayStore; |
| import com.android.tools.r8.cf.code.CfCheckCast; |
| import com.android.tools.r8.cf.code.CfCmp; |
| import com.android.tools.r8.cf.code.CfConstClass; |
| import com.android.tools.r8.cf.code.CfConstMethodHandle; |
| import com.android.tools.r8.cf.code.CfConstMethodType; |
| import com.android.tools.r8.cf.code.CfConstNull; |
| import com.android.tools.r8.cf.code.CfConstNumber; |
| import com.android.tools.r8.cf.code.CfConstString; |
| import com.android.tools.r8.cf.code.CfFieldInstruction; |
| import com.android.tools.r8.cf.code.CfFrame; |
| import com.android.tools.r8.cf.code.CfFrame.FrameType; |
| import com.android.tools.r8.cf.code.CfGoto; |
| import com.android.tools.r8.cf.code.CfIf; |
| import com.android.tools.r8.cf.code.CfIfCmp; |
| import com.android.tools.r8.cf.code.CfIinc; |
| import com.android.tools.r8.cf.code.CfInstanceOf; |
| import com.android.tools.r8.cf.code.CfInstruction; |
| import com.android.tools.r8.cf.code.CfInvoke; |
| import com.android.tools.r8.cf.code.CfInvokeDynamic; |
| import com.android.tools.r8.cf.code.CfLabel; |
| import com.android.tools.r8.cf.code.CfLoad; |
| import com.android.tools.r8.cf.code.CfLogicalBinop; |
| import com.android.tools.r8.cf.code.CfMonitor; |
| import com.android.tools.r8.cf.code.CfMultiANewArray; |
| import com.android.tools.r8.cf.code.CfNeg; |
| import com.android.tools.r8.cf.code.CfNew; |
| import com.android.tools.r8.cf.code.CfNewArray; |
| import com.android.tools.r8.cf.code.CfNop; |
| import com.android.tools.r8.cf.code.CfNumberConversion; |
| import com.android.tools.r8.cf.code.CfPosition; |
| import com.android.tools.r8.cf.code.CfReturn; |
| import com.android.tools.r8.cf.code.CfReturnVoid; |
| import com.android.tools.r8.cf.code.CfStackInstruction; |
| import com.android.tools.r8.cf.code.CfStore; |
| import com.android.tools.r8.cf.code.CfSwitch; |
| import com.android.tools.r8.cf.code.CfThrow; |
| import com.android.tools.r8.cf.code.CfTryCatch; |
| import com.android.tools.r8.errors.CompilationError; |
| import com.android.tools.r8.errors.Unimplemented; |
| import com.android.tools.r8.errors.Unreachable; |
| import com.android.tools.r8.graph.CfCode.LocalVariableInfo; |
| import com.android.tools.r8.graph.JarClassFileReader.ReparseContext; |
| import com.android.tools.r8.ir.code.IRCode; |
| import com.android.tools.r8.ir.code.If; |
| import com.android.tools.r8.ir.code.MemberType; |
| import com.android.tools.r8.ir.code.Monitor; |
| import com.android.tools.r8.ir.code.Position; |
| import com.android.tools.r8.ir.code.ValueNumberGenerator; |
| import com.android.tools.r8.ir.code.ValueType; |
| import com.android.tools.r8.naming.ClassNameMapper; |
| import com.android.tools.r8.origin.Origin; |
| import com.android.tools.r8.shaking.ProguardConfiguration; |
| import com.android.tools.r8.shaking.ProguardKeepAttributes; |
| import com.android.tools.r8.utils.InternalOptions; |
| import it.unimi.dsi.fastutil.ints.Int2ReferenceAVLTreeMap; |
| import it.unimi.dsi.fastutil.ints.Int2ReferenceMap; |
| import it.unimi.dsi.fastutil.ints.Int2ReferenceSortedMap; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.IdentityHashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.function.BiFunction; |
| import org.objectweb.asm.ClassReader; |
| import org.objectweb.asm.ClassVisitor; |
| import org.objectweb.asm.Handle; |
| import org.objectweb.asm.Label; |
| import org.objectweb.asm.MethodVisitor; |
| import org.objectweb.asm.Opcodes; |
| import org.objectweb.asm.Type; |
| import org.objectweb.asm.commons.JSRInlinerAdapter; |
| |
| public class LazyCfCode extends Code { |
| |
| private static class JsrEncountered extends RuntimeException { |
| public JsrEncountered(String s) { |
| super(s); |
| } |
| } |
| |
| public LazyCfCode( |
| DexMethod method, Origin origin, ReparseContext context, JarApplicationReader application) { |
| this.origin = origin; |
| this.context = context; |
| this.application = application; |
| context.codeList.add(this); |
| } |
| |
| private final Origin origin; |
| private final JarApplicationReader application; |
| private CfCode code; |
| protected ReparseContext context; |
| private boolean reachabilitySensitive = false; |
| |
| public void markReachabilitySensitive() { |
| assert code == null; |
| reachabilitySensitive = true; |
| } |
| |
| @Override |
| public boolean isCfCode() { |
| return true; |
| } |
| |
| @Override |
| public LazyCfCode asLazyCfCode() { |
| return this; |
| } |
| |
| @Override |
| public CfCode asCfCode() { |
| if (code == null) { |
| ReparseContext context = this.context; |
| assert context != null; |
| // The ClassCodeVisitor is in charge of setting this.context to null. |
| try { |
| parseCode(context, false); |
| } catch (JsrEncountered e) { |
| for (Code code : context.codeList) { |
| code.asLazyCfCode().code = null; |
| code.asLazyCfCode().context = context; |
| } |
| try { |
| parseCode(context, true); |
| } catch (JsrEncountered e1) { |
| throw new Unreachable(e1); |
| } |
| } |
| assert verifyNoReparseContext(context.owner); |
| } |
| assert code != null; |
| return code; |
| } |
| |
| public void parseCode(ReparseContext context, boolean useJsrInliner) { |
| int parsingOptions = getParsingOptions(application, reachabilitySensitive); |
| ClassCodeVisitor classVisitor = |
| new ClassCodeVisitor(context.owner, createCodeLocator(context), application, useJsrInliner); |
| new ClassReader(context.classCache).accept(classVisitor, parsingOptions); |
| } |
| |
| private void setCode(CfCode code) { |
| assert this.code == null; |
| assert this.context != null; |
| this.code = code; |
| this.context = null; |
| } |
| |
| @Override |
| protected int computeHashCode() { |
| throw new Unimplemented(); |
| } |
| |
| @Override |
| protected boolean computeEquals(Object other) { |
| throw new Unimplemented(); |
| } |
| |
| @Override |
| public boolean isEmptyVoidMethod() { |
| return asCfCode().isEmptyVoidMethod(); |
| } |
| |
| @Override |
| public int estimatedSizeForInlining() { |
| return asCfCode().estimatedSizeForInlining(); |
| } |
| |
| @Override |
| public boolean estimatedSizeForInliningAtMost(int threshold) { |
| return asCfCode().estimatedSizeForInliningAtMost(threshold); |
| } |
| |
| @Override |
| public IRCode buildIR(DexEncodedMethod encodedMethod, AppView<?> appView, Origin origin) { |
| return asCfCode().buildIR(encodedMethod, appView, origin); |
| } |
| |
| @Override |
| public IRCode buildInliningIR( |
| DexEncodedMethod context, |
| DexEncodedMethod encodedMethod, |
| AppView<?> appView, |
| ValueNumberGenerator valueNumberGenerator, |
| Position callerPosition, |
| Origin origin) { |
| return asCfCode() |
| .buildInliningIR( |
| context, encodedMethod, appView, valueNumberGenerator, callerPosition, origin); |
| } |
| |
| @Override |
| public void registerCodeReferences(DexEncodedMethod method, UseRegistry registry) { |
| asCfCode().registerCodeReferences(method, registry); |
| } |
| |
| @Override |
| public void registerArgumentReferences(DexEncodedMethod method, ArgumentUse registry) { |
| asCfCode().registerArgumentReferences(method, registry); |
| } |
| |
| @Override |
| public String toString() { |
| return asCfCode().toString(); |
| } |
| |
| @Override |
| public String toString(DexEncodedMethod method, ClassNameMapper naming) { |
| return asCfCode().toString(method, naming); |
| } |
| |
| protected BiFunction<String, String, LazyCfCode> createCodeLocator(ReparseContext context) { |
| return new DefaultCodeLocator(context, application); |
| } |
| |
| private static class DefaultCodeLocator implements BiFunction<String, String, LazyCfCode> { |
| private final ReparseContext context; |
| private final JarApplicationReader application; |
| private int methodIndex = 0; |
| |
| private DefaultCodeLocator(ReparseContext context, JarApplicationReader application) { |
| this.context = context; |
| this.application = application; |
| } |
| |
| @Override |
| public LazyCfCode apply(String name, String desc) { |
| return context.codeList.get(methodIndex++).asLazyCfCode(); |
| } |
| } |
| |
| private static class ClassCodeVisitor extends ClassVisitor { |
| |
| private final DexClass clazz; |
| private final BiFunction<String, String, LazyCfCode> codeLocator; |
| private final JarApplicationReader application; |
| private boolean usrJsrInliner; |
| |
| ClassCodeVisitor( |
| DexClass clazz, |
| BiFunction<String, String, LazyCfCode> codeLocator, |
| JarApplicationReader application, |
| boolean useJsrInliner) { |
| super(InternalOptions.ASM_VERSION); |
| this.clazz = clazz; |
| this.codeLocator = codeLocator; |
| this.application = application; |
| this.usrJsrInliner = useJsrInliner; |
| } |
| |
| @Override |
| public MethodVisitor visitMethod( |
| int access, String name, String desc, String signature, String[] exceptions) { |
| MethodAccessFlags flags = JarClassFileReader.createMethodAccessFlags(name, access); |
| if (!flags.isAbstract() && !flags.isNative()) { |
| LazyCfCode code = codeLocator.apply(name, desc); |
| if (code != null) { |
| DexMethod method = application.getMethod(clazz.type, name, desc); |
| MethodCodeVisitor methodVisitor = new MethodCodeVisitor(application, method, code); |
| if (!usrJsrInliner) { |
| return methodVisitor; |
| } |
| return new JSRInlinerAdapter(methodVisitor, access, name, desc, signature, exceptions); |
| } |
| } |
| return null; |
| } |
| } |
| |
| private static class MethodCodeVisitor extends MethodVisitor { |
| private final JarApplicationReader application; |
| private final DexItemFactory factory; |
| private int maxStack; |
| private int maxLocals; |
| private List<CfInstruction> instructions; |
| private List<CfTryCatch> tryCatchRanges; |
| private List<LocalVariableInfo> localVariables; |
| private final Map<DebugLocalInfo, DebugLocalInfo> canonicalDebugLocalInfo = new HashMap<>(); |
| private Map<Label, CfLabel> labelMap; |
| private final LazyCfCode code; |
| private final DexMethod method; |
| |
| MethodCodeVisitor(JarApplicationReader application, DexMethod method, LazyCfCode code) { |
| super(InternalOptions.ASM_VERSION); |
| assert code != null; |
| this.application = application; |
| this.factory = application.getFactory(); |
| this.code = code; |
| this.method = method; |
| } |
| |
| @Override |
| public void visitCode() { |
| maxStack = 0; |
| maxLocals = 0; |
| instructions = new ArrayList<>(); |
| tryCatchRanges = new ArrayList<>(); |
| localVariables = new ArrayList<>(); |
| labelMap = new IdentityHashMap<>(); |
| } |
| |
| @Override |
| public void visitEnd() { |
| code.setCode( |
| new CfCode( |
| method.holder, maxStack, maxLocals, instructions, tryCatchRanges, localVariables)); |
| } |
| |
| @Override |
| public void visitFrame( |
| int frameType, int nLocals, Object[] localTypes, int nStack, Object[] stackTypes) { |
| assert frameType == Opcodes.F_NEW; |
| Int2ReferenceSortedMap<FrameType> parsedLocals = parseLocals(nLocals, localTypes); |
| List<FrameType> parsedStack = parseStack(nStack, stackTypes); |
| instructions.add(new CfFrame(parsedLocals, parsedStack)); |
| } |
| |
| private Int2ReferenceSortedMap<FrameType> parseLocals(int typeCount, Object[] asmTypes) { |
| Int2ReferenceSortedMap<FrameType> types = new Int2ReferenceAVLTreeMap<>(); |
| int i = 0; |
| for (int j = 0; j < typeCount; j++) { |
| Object localType = asmTypes[j]; |
| FrameType value = getFrameType(localType); |
| types.put(i++, value); |
| if (value.isWide()) { |
| i++; |
| } |
| } |
| return types; |
| } |
| |
| private List<FrameType> parseStack(int nStack, Object[] stackTypes) { |
| List<FrameType> dexStack = new ArrayList<>(nStack); |
| for (int i = 0; i < nStack; i++) { |
| dexStack.add(getFrameType(stackTypes[i])); |
| } |
| return dexStack; |
| } |
| |
| private FrameType getFrameType(Object localType) { |
| if (localType instanceof Label) { |
| return FrameType.uninitializedNew(getLabel((Label) localType)); |
| } else if (localType == Opcodes.UNINITIALIZED_THIS) { |
| return FrameType.uninitializedThis(); |
| } else if (localType == null || localType == Opcodes.TOP) { |
| return FrameType.top(); |
| } else { |
| return FrameType.initialized(parseAsmType(localType)); |
| } |
| } |
| |
| private CfLabel getLabel(Label label) { |
| return labelMap.computeIfAbsent(label, l -> new CfLabel()); |
| } |
| |
| private DexType parseAsmType(Object local) { |
| assert local != null && local != Opcodes.TOP; |
| if (local == Opcodes.INTEGER) { |
| return factory.intType; |
| } else if (local == Opcodes.FLOAT) { |
| return factory.floatType; |
| } else if (local == Opcodes.LONG) { |
| return factory.longType; |
| } else if (local == Opcodes.DOUBLE) { |
| return factory.doubleType; |
| } else if (local == Opcodes.NULL) { |
| return DexItemFactory.nullValueType; |
| } else if (local instanceof String) { |
| return createTypeFromInternalType((String) local); |
| } else { |
| throw new Unreachable("Unexpected ASM type: " + local); |
| } |
| } |
| |
| private DexType createTypeFromInternalType(String local) { |
| assert local.indexOf('.') == -1; |
| return factory.createType(Type.getObjectType(local).getDescriptor()); |
| } |
| |
| @Override |
| public void visitInsn(int opcode) { |
| switch (opcode) { |
| case Opcodes.NOP: |
| instructions.add(new CfNop()); |
| break; |
| case Opcodes.ACONST_NULL: |
| instructions.add(new CfConstNull()); |
| break; |
| case Opcodes.ICONST_M1: |
| case Opcodes.ICONST_0: |
| case Opcodes.ICONST_1: |
| case Opcodes.ICONST_2: |
| case Opcodes.ICONST_3: |
| case Opcodes.ICONST_4: |
| case Opcodes.ICONST_5: |
| instructions.add(new CfConstNumber(opcode - Opcodes.ICONST_0, ValueType.INT)); |
| break; |
| case Opcodes.LCONST_0: |
| case Opcodes.LCONST_1: |
| instructions.add(new CfConstNumber(opcode - Opcodes.LCONST_0, ValueType.LONG)); |
| break; |
| case Opcodes.FCONST_0: |
| case Opcodes.FCONST_1: |
| case Opcodes.FCONST_2: |
| instructions.add( |
| new CfConstNumber( |
| Float.floatToRawIntBits(opcode - Opcodes.FCONST_0), ValueType.FLOAT)); |
| break; |
| case Opcodes.DCONST_0: |
| case Opcodes.DCONST_1: |
| instructions.add( |
| new CfConstNumber( |
| Double.doubleToRawLongBits(opcode - Opcodes.DCONST_0), ValueType.DOUBLE)); |
| break; |
| case Opcodes.IALOAD: |
| case Opcodes.LALOAD: |
| case Opcodes.FALOAD: |
| case Opcodes.DALOAD: |
| case Opcodes.AALOAD: |
| case Opcodes.BALOAD: |
| case Opcodes.CALOAD: |
| case Opcodes.SALOAD: |
| instructions.add(new CfArrayLoad(getMemberTypeForOpcode(opcode))); |
| break; |
| case Opcodes.IASTORE: |
| case Opcodes.LASTORE: |
| case Opcodes.FASTORE: |
| case Opcodes.DASTORE: |
| case Opcodes.AASTORE: |
| case Opcodes.BASTORE: |
| case Opcodes.CASTORE: |
| case Opcodes.SASTORE: |
| instructions.add(new CfArrayStore(getMemberTypeForOpcode(opcode))); |
| break; |
| case Opcodes.POP: |
| case Opcodes.POP2: |
| case Opcodes.DUP: |
| case Opcodes.DUP_X1: |
| case Opcodes.DUP_X2: |
| case Opcodes.DUP2: |
| case Opcodes.DUP2_X1: |
| case Opcodes.DUP2_X2: |
| case Opcodes.SWAP: |
| instructions.add(CfStackInstruction.fromAsm(opcode)); |
| break; |
| case Opcodes.IADD: |
| case Opcodes.LADD: |
| case Opcodes.FADD: |
| case Opcodes.DADD: |
| case Opcodes.ISUB: |
| case Opcodes.LSUB: |
| case Opcodes.FSUB: |
| case Opcodes.DSUB: |
| case Opcodes.IMUL: |
| case Opcodes.LMUL: |
| case Opcodes.FMUL: |
| case Opcodes.DMUL: |
| case Opcodes.IDIV: |
| case Opcodes.LDIV: |
| case Opcodes.FDIV: |
| case Opcodes.DDIV: |
| case Opcodes.IREM: |
| case Opcodes.LREM: |
| case Opcodes.FREM: |
| case Opcodes.DREM: |
| instructions.add(CfArithmeticBinop.fromAsm(opcode)); |
| break; |
| case Opcodes.INEG: |
| case Opcodes.LNEG: |
| case Opcodes.FNEG: |
| case Opcodes.DNEG: |
| instructions.add(CfNeg.fromAsm(opcode)); |
| break; |
| case Opcodes.ISHL: |
| case Opcodes.LSHL: |
| case Opcodes.ISHR: |
| case Opcodes.LSHR: |
| case Opcodes.IUSHR: |
| case Opcodes.LUSHR: |
| case Opcodes.IAND: |
| case Opcodes.LAND: |
| case Opcodes.IOR: |
| case Opcodes.LOR: |
| case Opcodes.IXOR: |
| case Opcodes.LXOR: |
| instructions.add(CfLogicalBinop.fromAsm(opcode)); |
| break; |
| case Opcodes.I2L: |
| case Opcodes.I2F: |
| case Opcodes.I2D: |
| case Opcodes.L2I: |
| case Opcodes.L2F: |
| case Opcodes.L2D: |
| case Opcodes.F2I: |
| case Opcodes.F2L: |
| case Opcodes.F2D: |
| case Opcodes.D2I: |
| case Opcodes.D2L: |
| case Opcodes.D2F: |
| case Opcodes.I2B: |
| case Opcodes.I2C: |
| case Opcodes.I2S: |
| instructions.add(CfNumberConversion.fromAsm(opcode)); |
| break; |
| case Opcodes.LCMP: |
| case Opcodes.FCMPL: |
| case Opcodes.FCMPG: |
| case Opcodes.DCMPL: |
| case Opcodes.DCMPG: |
| instructions.add(CfCmp.fromAsm(opcode)); |
| break; |
| case Opcodes.IRETURN: |
| instructions.add(new CfReturn(ValueType.INT)); |
| break; |
| case Opcodes.LRETURN: |
| instructions.add(new CfReturn(ValueType.LONG)); |
| break; |
| case Opcodes.FRETURN: |
| instructions.add(new CfReturn(ValueType.FLOAT)); |
| break; |
| case Opcodes.DRETURN: |
| instructions.add(new CfReturn(ValueType.DOUBLE)); |
| break; |
| case Opcodes.ARETURN: |
| instructions.add(new CfReturn(ValueType.OBJECT)); |
| break; |
| case Opcodes.RETURN: |
| instructions.add(new CfReturnVoid()); |
| break; |
| case Opcodes.ARRAYLENGTH: |
| instructions.add(new CfArrayLength()); |
| break; |
| case Opcodes.ATHROW: |
| instructions.add(new CfThrow()); |
| break; |
| case Opcodes.MONITORENTER: |
| instructions.add(new CfMonitor(Monitor.Type.ENTER)); |
| break; |
| case Opcodes.MONITOREXIT: |
| instructions.add(new CfMonitor(Monitor.Type.EXIT)); |
| break; |
| default: |
| throw new Unreachable("Unknown instruction"); |
| } |
| } |
| |
| private static MemberType getMemberTypeForOpcode(int opcode) { |
| switch (opcode) { |
| case Opcodes.IALOAD: |
| case Opcodes.IASTORE: |
| return MemberType.INT; |
| case Opcodes.FALOAD: |
| case Opcodes.FASTORE: |
| return MemberType.FLOAT; |
| case Opcodes.LALOAD: |
| case Opcodes.LASTORE: |
| return MemberType.LONG; |
| case Opcodes.DALOAD: |
| case Opcodes.DASTORE: |
| return MemberType.DOUBLE; |
| case Opcodes.AALOAD: |
| case Opcodes.AASTORE: |
| return MemberType.OBJECT; |
| case Opcodes.BALOAD: |
| case Opcodes.BASTORE: |
| return MemberType.BOOLEAN_OR_BYTE; |
| case Opcodes.CALOAD: |
| case Opcodes.CASTORE: |
| return MemberType.CHAR; |
| case Opcodes.SALOAD: |
| case Opcodes.SASTORE: |
| return MemberType.SHORT; |
| default: |
| throw new Unreachable("Unexpected array opcode " + opcode); |
| } |
| } |
| |
| @Override |
| public void visitIntInsn(int opcode, int operand) { |
| switch (opcode) { |
| case Opcodes.SIPUSH: |
| case Opcodes.BIPUSH: |
| instructions.add(new CfConstNumber(operand, ValueType.INT)); |
| break; |
| case Opcodes.NEWARRAY: |
| instructions.add( |
| new CfNewArray(factory.createArrayType(1, arrayTypeDesc(operand, factory)))); |
| break; |
| default: |
| throw new Unreachable("Unexpected int opcode " + opcode); |
| } |
| } |
| |
| private static DexType arrayTypeDesc(int arrayTypeCode, DexItemFactory factory) { |
| switch (arrayTypeCode) { |
| case Opcodes.T_BOOLEAN: |
| return factory.booleanType; |
| case Opcodes.T_CHAR: |
| return factory.charType; |
| case Opcodes.T_FLOAT: |
| return factory.floatType; |
| case Opcodes.T_DOUBLE: |
| return factory.doubleType; |
| case Opcodes.T_BYTE: |
| return factory.byteType; |
| case Opcodes.T_SHORT: |
| return factory.shortType; |
| case Opcodes.T_INT: |
| return factory.intType; |
| case Opcodes.T_LONG: |
| return factory.longType; |
| default: |
| throw new Unreachable("Unexpected array-type code " + arrayTypeCode); |
| } |
| } |
| |
| @Override |
| public void visitVarInsn(int opcode, int var) { |
| ValueType type; |
| switch (opcode) { |
| case Opcodes.ILOAD: |
| case Opcodes.ISTORE: |
| type = ValueType.INT; |
| break; |
| case Opcodes.FLOAD: |
| case Opcodes.FSTORE: |
| type = ValueType.FLOAT; |
| break; |
| case Opcodes.LLOAD: |
| case Opcodes.LSTORE: |
| type = ValueType.LONG; |
| break; |
| case Opcodes.DLOAD: |
| case Opcodes.DSTORE: |
| type = ValueType.DOUBLE; |
| break; |
| case Opcodes.ALOAD: |
| case Opcodes.ASTORE: |
| type = ValueType.OBJECT; |
| break; |
| case Opcodes.RET: |
| throw new JsrEncountered("RET should be handled by the ASM jsr inliner"); |
| default: |
| throw new Unreachable("Unexpected VarInsn opcode: " + opcode); |
| } |
| if (Opcodes.ILOAD <= opcode && opcode <= Opcodes.ALOAD) { |
| instructions.add(new CfLoad(type, var)); |
| } else { |
| instructions.add(new CfStore(type, var)); |
| } |
| } |
| |
| @Override |
| public void visitTypeInsn(int opcode, String typeName) { |
| DexType type = factory.createType(Type.getObjectType(typeName).getDescriptor()); |
| switch (opcode) { |
| case Opcodes.NEW: |
| instructions.add(new CfNew(type)); |
| break; |
| case Opcodes.ANEWARRAY: |
| instructions.add(new CfNewArray(factory.createArrayType(1, type))); |
| break; |
| case Opcodes.CHECKCAST: |
| instructions.add(new CfCheckCast(type)); |
| break; |
| case Opcodes.INSTANCEOF: |
| instructions.add(new CfInstanceOf(type)); |
| break; |
| default: |
| throw new Unreachable("Unexpected TypeInsn opcode: " + opcode); |
| } |
| } |
| |
| @Override |
| public void visitFieldInsn(int opcode, String owner, String name, String desc) { |
| DexField field = |
| factory.createField(createTypeFromInternalType(owner), factory.createType(desc), name); |
| // TODO(mathiasr): Don't require CfFieldInstruction::declaringField. It is needed for proper |
| // renaming in the backend, but it is not available here in the frontend. |
| instructions.add(new CfFieldInstruction(opcode, field, field)); |
| } |
| |
| @Override |
| public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) { |
| DexMethod method = application.getMethod(owner, name, desc); |
| instructions.add(new CfInvoke(opcode, method, itf)); |
| } |
| |
| @Override |
| public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, Object... bsmArgs) { |
| DexCallSite callSite = |
| DexCallSite.fromAsmInvokeDynamic(application, method.holder, name, desc, bsm, bsmArgs); |
| instructions.add(new CfInvokeDynamic(callSite)); |
| } |
| |
| @Override |
| public void visitJumpInsn(int opcode, Label label) { |
| CfLabel target = getLabel(label); |
| if (Opcodes.IFEQ <= opcode && opcode <= Opcodes.IF_ACMPNE) { |
| if (opcode <= Opcodes.IFLE) { |
| // IFEQ, IFNE, IFLT, IFGE, IFGT, or IFLE. |
| instructions.add(new CfIf(ifType(opcode), ValueType.INT, target)); |
| } else { |
| // IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, or |
| // IF_ACMPNE. |
| ValueType valueType; |
| if (opcode <= Opcodes.IF_ICMPLE) { |
| valueType = ValueType.INT; |
| } else { |
| valueType = ValueType.OBJECT; |
| } |
| instructions.add(new CfIfCmp(ifType(opcode), valueType, target)); |
| } |
| } else { |
| // GOTO, JSR, IFNULL or IFNONNULL. |
| switch (opcode) { |
| case Opcodes.GOTO: |
| instructions.add(new CfGoto(target)); |
| break; |
| case Opcodes.IFNULL: |
| case Opcodes.IFNONNULL: |
| If.Type type = opcode == Opcodes.IFNULL ? If.Type.EQ : If.Type.NE; |
| instructions.add(new CfIf(type, ValueType.OBJECT, target)); |
| break; |
| case Opcodes.JSR: |
| throw new JsrEncountered("JSR should be handled by the ASM jsr inliner"); |
| default: |
| throw new Unreachable("Unexpected JumpInsn opcode: " + opcode); |
| } |
| } |
| } |
| |
| private static If.Type ifType(int opcode) { |
| switch (opcode) { |
| case Opcodes.IFEQ: |
| case Opcodes.IF_ICMPEQ: |
| case Opcodes.IF_ACMPEQ: |
| return If.Type.EQ; |
| case Opcodes.IFNE: |
| case Opcodes.IF_ICMPNE: |
| case Opcodes.IF_ACMPNE: |
| return If.Type.NE; |
| case Opcodes.IFLT: |
| case Opcodes.IF_ICMPLT: |
| return If.Type.LT; |
| case Opcodes.IFGE: |
| case Opcodes.IF_ICMPGE: |
| return If.Type.GE; |
| case Opcodes.IFGT: |
| case Opcodes.IF_ICMPGT: |
| return If.Type.GT; |
| case Opcodes.IFLE: |
| case Opcodes.IF_ICMPLE: |
| return If.Type.LE; |
| default: |
| throw new Unreachable("Unexpected If instruction opcode: " + opcode); |
| } |
| } |
| |
| @Override |
| public void visitLabel(Label label) { |
| instructions.add(getLabel(label)); |
| } |
| |
| @Override |
| public void visitLdcInsn(Object cst) { |
| if (cst instanceof Type) { |
| Type type = (Type) cst; |
| if (type.getSort() == Type.METHOD) { |
| DexProto proto = application.getProto(type.getDescriptor()); |
| instructions.add(new CfConstMethodType(proto)); |
| } else { |
| instructions.add(new CfConstClass(factory.createType(type.getDescriptor()))); |
| } |
| } else if (cst instanceof String) { |
| instructions.add(new CfConstString(factory.createString((String) cst))); |
| } else if (cst instanceof Long) { |
| instructions.add(new CfConstNumber((Long) cst, ValueType.LONG)); |
| } else if (cst instanceof Double) { |
| long l = Double.doubleToRawLongBits((Double) cst); |
| instructions.add(new CfConstNumber(l, ValueType.DOUBLE)); |
| } else if (cst instanceof Integer) { |
| instructions.add(new CfConstNumber((Integer) cst, ValueType.INT)); |
| } else if (cst instanceof Float) { |
| long i = Float.floatToRawIntBits((Float) cst); |
| instructions.add(new CfConstNumber(i, ValueType.FLOAT)); |
| } else if (cst instanceof Handle) { |
| instructions.add( |
| new CfConstMethodHandle( |
| DexMethodHandle.fromAsmHandle((Handle) cst, application, method.holder))); |
| } else { |
| throw new CompilationError("Unsupported constant: " + cst.toString()); |
| } |
| } |
| |
| @Override |
| public void visitIincInsn(int var, int increment) { |
| instructions.add(new CfIinc(var, increment)); |
| } |
| |
| @Override |
| public void visitTableSwitchInsn(int min, int max, Label dflt, Label... labels) { |
| assert max == min + labels.length - 1; |
| ArrayList<CfLabel> targets = new ArrayList<>(labels.length); |
| for (Label label : labels) { |
| targets.add(getLabel(label)); |
| } |
| instructions.add(new CfSwitch(CfSwitch.Kind.TABLE, getLabel(dflt), new int[] {min}, targets)); |
| } |
| |
| @Override |
| public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) { |
| ArrayList<CfLabel> targets = new ArrayList<>(labels.length); |
| for (Label label : labels) { |
| targets.add(getLabel(label)); |
| } |
| instructions.add(new CfSwitch(CfSwitch.Kind.LOOKUP, getLabel(dflt), keys, targets)); |
| } |
| |
| @Override |
| public void visitMultiANewArrayInsn(String desc, int dims) { |
| if (!application.options.isGeneratingDex()) { |
| instructions.add(new CfMultiANewArray(factory.createType(desc), dims)); |
| return; |
| } |
| // When generating DEX code a multianewarray is desugared to a reflective creation. |
| // The stack transformation is: |
| // ..., count1, ..., countN (where N = dims) |
| // -> |
| // ..., arrayref(of type : desc) |
| // |
| // This is unfolded to a call to java.lang.reflect.Array.newInstance to the same effect: |
| // ..., count1, ..., countN |
| visitLdcInsn(dims); |
| // ..., count1, ..., countN, dims |
| visitIntInsn(Opcodes.NEWARRAY, Opcodes.T_INT); |
| // ..., count1, ..., countN, dim-array |
| for (int i = dims - 1; i >= 0; i--) { |
| visitInsn(Opcodes.DUP_X1); |
| // ..., count1, ..., dim-array, countN, dim-array |
| visitInsn(Opcodes.SWAP); |
| // ..., count1, ..., dim-array, dim-array, countN |
| visitLdcInsn(i); |
| // ..., count1, ..., dim-array, dim-array, countN, index |
| visitInsn(Opcodes.SWAP); |
| // ..., count1, ..., dim-array, dim-array, index, countN |
| visitInsn(Opcodes.IASTORE); |
| // ..., count1, ..., dim-array |
| } |
| visitLdcInsn(Type.getType(desc.substring(dims))); |
| // ..., dim-array, dim-member-type |
| visitInsn(Opcodes.SWAP); |
| // ..., dim-member-type, dim-array |
| visitMethodInsn( |
| Opcodes.INVOKESTATIC, |
| "java/lang/reflect/Array", |
| "newInstance", |
| "(Ljava/lang/Class;[I)Ljava/lang/Object;", |
| false); |
| // ..., ref |
| visitTypeInsn(Opcodes.CHECKCAST, desc); |
| // ..., arrayref(of type : desc) |
| } |
| |
| @Override |
| public void visitTryCatchBlock(Label start, Label end, Label handler, String type) { |
| List<DexType> guards = |
| Collections.singletonList( |
| type == null ? factory.throwableType : createTypeFromInternalType(type)); |
| List<CfLabel> targets = Collections.singletonList(getLabel(handler)); |
| tryCatchRanges.add(new CfTryCatch(getLabel(start), getLabel(end), guards, targets)); |
| } |
| |
| @Override |
| public void visitLocalVariable( |
| String name, String desc, String signature, Label start, Label end, int index) { |
| DebugLocalInfo debugLocalInfo = |
| canonicalize( |
| new DebugLocalInfo( |
| factory.createString(name), |
| factory.createType(desc), |
| signature == null ? null : factory.createString(signature))); |
| localVariables.add( |
| new LocalVariableInfo(index, debugLocalInfo, getLabel(start), getLabel(end))); |
| } |
| |
| private DebugLocalInfo canonicalize(DebugLocalInfo debugLocalInfo) { |
| return canonicalDebugLocalInfo.computeIfAbsent(debugLocalInfo, o -> debugLocalInfo); |
| } |
| |
| @Override |
| public void visitLineNumber(int line, Label start) { |
| instructions.add(new CfPosition(getLabel(start), new Position(line, null, method, null))); |
| } |
| |
| @Override |
| public void visitMaxs(int maxStack, int maxLocals) { |
| assert maxStack >= 0; |
| assert maxLocals >= 0; |
| this.maxStack = maxStack; |
| this.maxLocals = maxLocals; |
| } |
| } |
| |
| private static int getParsingOptions( |
| JarApplicationReader application, boolean reachabilitySensitive) { |
| int parsingOptions = |
| application.options.testing.readInputStackMaps |
| ? ClassReader.EXPAND_FRAMES |
| : ClassReader.SKIP_FRAMES; |
| |
| ProguardConfiguration configuration = application.options.getProguardConfiguration(); |
| if (configuration != null && !configuration.isKeepParameterNames()) { |
| ProguardKeepAttributes keep = |
| application.options.getProguardConfiguration().getKeepAttributes(); |
| if (!application.options.getProguardConfiguration().isKeepParameterNames() |
| && !keep.localVariableTable |
| && !keep.localVariableTypeTable |
| && !keep.lineNumberTable |
| && !reachabilitySensitive) { |
| parsingOptions |= ClassReader.SKIP_DEBUG; |
| } |
| } |
| return parsingOptions; |
| } |
| |
| private static boolean verifyNoReparseContext(DexClass owner) { |
| for (DexEncodedMethod method : owner.virtualMethods()) { |
| Code code = method.getCode(); |
| assert code == null || !(code instanceof LazyCfCode) || ((LazyCfCode) code).context == null; |
| } |
| for (DexEncodedMethod method : owner.directMethods()) { |
| Code code = method.getCode(); |
| assert code == null || !(code instanceof LazyCfCode) || ((LazyCfCode) code).context == null; |
| } |
| return true; |
| } |
| |
| @Override |
| public Int2ReferenceMap<DebugLocalInfo> collectParameterInfo( |
| DexEncodedMethod encodedMethod, AppView<?> appView) { |
| return asCfCode().collectParameterInfo(encodedMethod, appView); |
| } |
| } |
