Examples with TranslationAdvice com.android.dx.rop.code.TranslationAdvice used on opensource projects

Example 1 with TranslationAdvice

use of com.android.dx.rop.code.TranslationAdvice in project buck by facebook.

the class CfTranslator method processMethods.

/**
     * Processes the methods of the given class.
     *
     * @param context
     * @param cf {@code non-null;} class being translated
     * @param cfOptions {@code non-null;} options for class translation
     * @param dexOptions {@code non-null;} options for dex output
     * @param out {@code non-null;} output class
     * @param dexFile {@code non-null;} dex output
     */
private static void processMethods(DxContext context, DirectClassFile cf, CfOptions cfOptions, DexOptions dexOptions, ClassDefItem out, DexFile dexFile) {
    CstType thisClass = cf.getThisClass();
    MethodList methods = cf.getMethods();
    int sz = methods.size();
    for (int i = 0; i < sz; i++) {
        Method one = methods.get(i);
        try {
            CstMethodRef meth = new CstMethodRef(thisClass, one.getNat());
            int accessFlags = one.getAccessFlags();
            boolean isStatic = AccessFlags.isStatic(accessFlags);
            boolean isPrivate = AccessFlags.isPrivate(accessFlags);
            boolean isNative = AccessFlags.isNative(accessFlags);
            boolean isAbstract = AccessFlags.isAbstract(accessFlags);
            boolean isConstructor = meth.isInstanceInit() || meth.isClassInit();
            DalvCode code;
            if (isNative || isAbstract) {
                // There's no code for native or abstract methods.
                code = null;
            } else {
                ConcreteMethod concrete = new ConcreteMethod(one, cf, (cfOptions.positionInfo != PositionList.NONE), cfOptions.localInfo);
                TranslationAdvice advice;
                advice = DexTranslationAdvice.THE_ONE;
                RopMethod rmeth = Ropper.convert(concrete, advice, methods);
                RopMethod nonOptRmeth = null;
                int paramSize;
                paramSize = meth.getParameterWordCount(isStatic);
                String canonicalName = thisClass.getClassType().getDescriptor() + "." + one.getName().getString();
                if (cfOptions.optimize && context.optimizerOptions.shouldOptimize(canonicalName)) {
                    if (DEBUG) {
                        System.err.println("Optimizing " + canonicalName);
                    }
                    nonOptRmeth = rmeth;
                    rmeth = Optimizer.optimize(rmeth, paramSize, isStatic, cfOptions.localInfo, advice);
                    if (DEBUG) {
                        context.optimizerOptions.compareOptimizerStep(nonOptRmeth, paramSize, isStatic, cfOptions, advice, rmeth);
                    }
                    if (cfOptions.statistics) {
                        context.codeStatistics.updateRopStatistics(nonOptRmeth, rmeth);
                    }
                }
                LocalVariableInfo locals = null;
                if (cfOptions.localInfo) {
                    locals = LocalVariableExtractor.extract(rmeth);
                }
                code = RopTranslator.translate(rmeth, cfOptions.positionInfo, locals, paramSize, dexOptions);
                if (cfOptions.statistics && nonOptRmeth != null) {
                    updateDexStatistics(context, cfOptions, dexOptions, rmeth, nonOptRmeth, locals, paramSize, concrete.getCode().size());
                }
            }
            // Preserve the synchronized flag as its "declared" variant...
            if (AccessFlags.isSynchronized(accessFlags)) {
                accessFlags |= AccessFlags.ACC_DECLARED_SYNCHRONIZED;
                /*
                     * ...but only native methods are actually allowed to be
                     * synchronized.
                     */
                if (!isNative) {
                    accessFlags &= ~AccessFlags.ACC_SYNCHRONIZED;
                }
            }
            if (isConstructor) {
                accessFlags |= AccessFlags.ACC_CONSTRUCTOR;
            }
            TypeList exceptions = AttributeTranslator.getExceptions(one);
            EncodedMethod mi = new EncodedMethod(meth, accessFlags, code, exceptions);
            if (meth.isInstanceInit() || meth.isClassInit() || isStatic || isPrivate) {
                out.addDirectMethod(mi);
            } else {
                out.addVirtualMethod(mi);
            }
            Annotations annotations = AttributeTranslator.getMethodAnnotations(one);
            if (annotations.size() != 0) {
                out.addMethodAnnotations(meth, annotations, dexFile);
            }
            AnnotationsList list = AttributeTranslator.getParameterAnnotations(one);
            if (list.size() != 0) {
                out.addParameterAnnotations(meth, list, dexFile);
            }
            dexFile.getMethodIds().intern(meth);
        } catch (RuntimeException ex) {
            String msg = "...while processing " + one.getName().toHuman() + " " + one.getDescriptor().toHuman();
            throw ExceptionWithContext.withContext(ex, msg);
        }
    }
}

Example 2 with TranslationAdvice

use of com.android.dx.rop.code.TranslationAdvice in project buck by facebook.

the class DotDumper method endParsingMember.

public void endParsingMember(ByteArray bytes, int offset, String name, String descriptor, Member member) {
    if (!(member instanceof Method)) {
        return;
    }
    if (!shouldDumpMethod(name)) {
        return;
    }
    ConcreteMethod meth = new ConcreteMethod((Method) member, classFile, true, true);
    TranslationAdvice advice = DexTranslationAdvice.THE_ONE;
    RopMethod rmeth = Ropper.convert(meth, advice, classFile.getMethods());
    if (optimize) {
        boolean isStatic = AccessFlags.isStatic(meth.getAccessFlags());
        rmeth = Optimizer.optimize(rmeth, BaseDumper.computeParamWidth(meth, isStatic), isStatic, true, advice);
    }
    System.out.println("digraph " + name + "{");
    System.out.println("\tfirst -> n" + Hex.u2(rmeth.getFirstLabel()) + ";");
    BasicBlockList blocks = rmeth.getBlocks();
    int sz = blocks.size();
    for (int i = 0; i < sz; i++) {
        BasicBlock bb = blocks.get(i);
        int label = bb.getLabel();
        IntList successors = bb.getSuccessors();
        if (successors.size() == 0) {
            System.out.println("\tn" + Hex.u2(label) + " -> returns;");
        } else if (successors.size() == 1) {
            System.out.println("\tn" + Hex.u2(label) + " -> n" + Hex.u2(successors.get(0)) + ";");
        } else {
            System.out.print("\tn" + Hex.u2(label) + " -> {");
            for (int j = 0; j < successors.size(); j++) {
                int successor = successors.get(j);
                if (successor != bb.getPrimarySuccessor()) {
                    System.out.print(" n" + Hex.u2(successor) + " ");
                }
            }
            System.out.println("};");
            System.out.println("\tn" + Hex.u2(label) + " -> n" + Hex.u2(bb.getPrimarySuccessor()) + " [label=\"primary\"];");
        }
    }
    System.out.println("}");
}

Example 3 with TranslationAdvice

use of com.android.dx.rop.code.TranslationAdvice in project buck by facebook.

the class LiteralOpUpgrader method run.

/**
     * Run the literal op upgrader
     */
private void run() {
    final TranslationAdvice advice = Optimizer.getAdvice();
    ssaMeth.forEachInsn(new SsaInsn.Visitor() {

        public void visitMoveInsn(NormalSsaInsn insn) {
        // do nothing
        }

        public void visitPhiInsn(PhiInsn insn) {
        // do nothing
        }

        public void visitNonMoveInsn(NormalSsaInsn insn) {
            Insn originalRopInsn = insn.getOriginalRopInsn();
            Rop opcode = originalRopInsn.getOpcode();
            RegisterSpecList sources = insn.getSources();
            // Replace insns with constant results with const insns
            if (tryReplacingWithConstant(insn))
                return;
            if (sources.size() != 2) {
                // We're only dealing with two-source insns here.
                return;
            }
            if (opcode.getBranchingness() == Rop.BRANCH_IF) {
                /*
                     * An if instruction can become an if-*z instruction.
                     */
                if (isConstIntZeroOrKnownNull(sources.get(0))) {
                    replacePlainInsn(insn, sources.withoutFirst(), RegOps.flippedIfOpcode(opcode.getOpcode()), null);
                } else if (isConstIntZeroOrKnownNull(sources.get(1))) {
                    replacePlainInsn(insn, sources.withoutLast(), opcode.getOpcode(), null);
                }
            } else if (advice.hasConstantOperation(opcode, sources.get(0), sources.get(1))) {
                insn.upgradeToLiteral();
            } else if (opcode.isCommutative() && advice.hasConstantOperation(opcode, sources.get(1), sources.get(0))) {
                /*
                     * An instruction can be commuted to a literal operation
                     */
                insn.setNewSources(RegisterSpecList.make(sources.get(1), sources.get(0)));
                insn.upgradeToLiteral();
            }
        }
    });
}

Example 4 with TranslationAdvice

use of com.android.dx.rop.code.TranslationAdvice in project buck by facebook.

the class BlockDumper method ropDump.

/**
     * Does a registerizing dump.
     *
     * @param meth {@code non-null;} method data to dump
     */
private void ropDump(ConcreteMethod meth) {
    TranslationAdvice advice = DexTranslationAdvice.THE_ONE;
    BytecodeArray code = meth.getCode();
    ByteArray bytes = code.getBytes();
    RopMethod rmeth = Ropper.convert(meth, advice, classFile.getMethods());
    StringBuffer sb = new StringBuffer(2000);
    if (optimize) {
        boolean isStatic = AccessFlags.isStatic(meth.getAccessFlags());
        int paramWidth = computeParamWidth(meth, isStatic);
        rmeth = Optimizer.optimize(rmeth, paramWidth, isStatic, true, advice);
    }
    BasicBlockList blocks = rmeth.getBlocks();
    int[] order = blocks.getLabelsInOrder();
    sb.append("first " + Hex.u2(rmeth.getFirstLabel()) + "\n");
    for (int label : order) {
        BasicBlock bb = blocks.get(blocks.indexOfLabel(label));
        sb.append("block ");
        sb.append(Hex.u2(label));
        sb.append("\n");
        IntList preds = rmeth.labelToPredecessors(label);
        int psz = preds.size();
        for (int i = 0; i < psz; i++) {
            sb.append("  pred ");
            sb.append(Hex.u2(preds.get(i)));
            sb.append("\n");
        }
        InsnList il = bb.getInsns();
        int ilsz = il.size();
        for (int i = 0; i < ilsz; i++) {
            Insn one = il.get(i);
            sb.append("  ");
            sb.append(il.get(i).toHuman());
            sb.append("\n");
        }
        IntList successors = bb.getSuccessors();
        int ssz = successors.size();
        if (ssz == 0) {
            sb.append("  returns\n");
        } else {
            int primary = bb.getPrimarySuccessor();
            for (int i = 0; i < ssz; i++) {
                int succ = successors.get(i);
                sb.append("  next ");
                sb.append(Hex.u2(succ));
                if ((ssz != 1) && (succ == primary)) {
                    sb.append(" *");
                }
                sb.append("\n");
            }
        }
    }
    suppressDump = false;
    setAt(bytes, 0);
    parsed(bytes, 0, bytes.size(), sb.toString());
    suppressDump = true;
}

Example 5 with TranslationAdvice

use of com.android.dx.rop.code.TranslationAdvice in project buck by facebook.

the class SsaDumper method endParsingMember.

/** {@inheritDoc} */
@Override
public void endParsingMember(ByteArray bytes, int offset, String name, String descriptor, Member member) {
    if (!(member instanceof Method)) {
        return;
    }
    if (!shouldDumpMethod(name)) {
        return;
    }
    if ((member.getAccessFlags() & (AccessFlags.ACC_ABSTRACT | AccessFlags.ACC_NATIVE)) != 0) {
        return;
    }
    ConcreteMethod meth = new ConcreteMethod((Method) member, classFile, true, true);
    TranslationAdvice advice = DexTranslationAdvice.THE_ONE;
    RopMethod rmeth = Ropper.convert(meth, advice, classFile.getMethods());
    SsaMethod ssaMeth = null;
    boolean isStatic = AccessFlags.isStatic(meth.getAccessFlags());
    int paramWidth = computeParamWidth(meth, isStatic);
    if (args.ssaStep == null) {
        ssaMeth = Optimizer.debugNoRegisterAllocation(rmeth, paramWidth, isStatic, true, advice, EnumSet.allOf(Optimizer.OptionalStep.class));
    } else if ("edge-split".equals(args.ssaStep)) {
        ssaMeth = Optimizer.debugEdgeSplit(rmeth, paramWidth, isStatic, true, advice);
    } else if ("phi-placement".equals(args.ssaStep)) {
        ssaMeth = Optimizer.debugPhiPlacement(rmeth, paramWidth, isStatic, true, advice);
    } else if ("renaming".equals(args.ssaStep)) {
        ssaMeth = Optimizer.debugRenaming(rmeth, paramWidth, isStatic, true, advice);
    } else if ("dead-code".equals(args.ssaStep)) {
        ssaMeth = Optimizer.debugDeadCodeRemover(rmeth, paramWidth, isStatic, true, advice);
    }
    StringBuffer sb = new StringBuffer(2000);
    sb.append("first ");
    sb.append(Hex.u2(ssaMeth.blockIndexToRopLabel(ssaMeth.getEntryBlockIndex())));
    sb.append('\n');
    ArrayList<SsaBasicBlock> blocks = ssaMeth.getBlocks();
    ArrayList<SsaBasicBlock> sortedBlocks = (ArrayList<SsaBasicBlock>) blocks.clone();
    Collections.sort(sortedBlocks, SsaBasicBlock.LABEL_COMPARATOR);
    for (SsaBasicBlock block : sortedBlocks) {
        sb.append("block ").append(Hex.u2(block.getRopLabel())).append('\n');
        BitSet preds = block.getPredecessors();
        for (int i = preds.nextSetBit(0); i >= 0; i = preds.nextSetBit(i + 1)) {
            sb.append("  pred ");
            sb.append(Hex.u2(ssaMeth.blockIndexToRopLabel(i)));
            sb.append('\n');
        }
        sb.append("  live in:" + block.getLiveInRegs());
        sb.append("\n");
        for (SsaInsn insn : block.getInsns()) {
            sb.append("  ");
            sb.append(insn.toHuman());
            sb.append('\n');
        }
        if (block.getSuccessors().cardinality() == 0) {
            sb.append("  returns\n");
        } else {
            int primary = block.getPrimarySuccessorRopLabel();
            IntList succLabelList = block.getRopLabelSuccessorList();
            int szSuccLabels = succLabelList.size();
            for (int i = 0; i < szSuccLabels; i++) {
                sb.append("  next ");
                sb.append(Hex.u2(succLabelList.get(i)));
                if (szSuccLabels != 1 && primary == succLabelList.get(i)) {
                    sb.append(" *");
                }
                sb.append('\n');
            }
        }
        sb.append("  live out:" + block.getLiveOutRegs());
        sb.append("\n");
    }
    suppressDump = false;
    setAt(bytes, 0);
    parsed(bytes, 0, bytes.size(), sb.toString());
    suppressDump = true;
}