Example usage for org.objectweb.asm Opcodes ISTORE

List of usage examples for org.objectweb.asm Opcodes ISTORE

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ISTORE.

Prototype

int ISTORE

To view the source code for org.objectweb.asm Opcodes ISTORE.

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Usage

From source file:com.codename1.tools.translator.BytecodeMethod.java

License:Open Source License

boolean optimize() {
    int instructionCount = instructions.size();

    // optimize away a method that only contains the void return instruction e.g. blank constructors etc.
    if (instructionCount < 6) {
        int realCount = instructionCount;
        Instruction actual = null;/*w  ww. j a v a  2s . c o  m*/
        for (int iter = 0; iter < instructionCount; iter++) {
            Instruction current = instructions.get(iter);
            if (current instanceof LabelInstruction) {
                realCount--;
                continue;
            }
            if (current instanceof LineNumber) {
                realCount--;
                continue;
            }
            actual = current;
        }

        if (realCount == 1 && actual != null && actual.getOpcode() == Opcodes.RETURN) {
            return false;
        }
    }

    boolean astoreCalls = false;
    boolean hasInstructions = false;

    boolean hasTryCatch = false;
    for (int iter = 0; iter < instructionCount - 1; iter++) {
        Instruction current = instructions.get(iter);
        if (current instanceof TryCatch) {
            hasTryCatch = true;
        }
        current.setMethod(this);
        if (current.isOptimized()) {
            continue;
        }
        int currentOpcode = current.getOpcode();
        switch (currentOpcode) {
        case Opcodes.CHECKCAST: {
            // Remove the check cast for now as it gets in the way of other optimizations
            instructions.remove(iter);
            iter--;
            instructionCount--;
            break;
        }
        }
    }

    for (int iter = 0; iter < instructionCount - 1; iter++) {
        Instruction current = instructions.get(iter);
        if (current.isOptimized()) {
            // This instruction has already been optimized
            // we should skip it and proceed to the next one
            continue;
        }
        Instruction next = instructions.get(iter + 1);

        int currentOpcode = current.getOpcode();
        int nextOpcode = next.getOpcode();

        if (ArithmeticExpression.isArithmeticOp(current)) {
            int addedIndex = ArithmeticExpression.tryReduce(instructions, iter);
            if (addedIndex >= 0) {
                iter = addedIndex;
                instructionCount = instructions.size();
                continue;
            }
        }

        if (current instanceof Field) {
            int newIter = Field.tryReduce(instructions, iter);
            if (newIter >= 0) {
                iter = newIter;
                instructionCount = instructions.size();
                continue;
            }
        }

        switch (currentOpcode) {

        case Opcodes.ARRAYLENGTH: {
            if (!dependentClasses.contains("java_lang_NullPointerException")) {
                dependentClasses.add("java_lang_NullPointerException");
            }
            int newIter = ArrayLengthExpression.tryReduce(instructions, iter);
            if (newIter >= 0) {
                instructionCount = instructions.size();
                iter = newIter;
                continue;
            }
            break;
        }

        case Opcodes.DUP: {
            int newIter = DupExpression.tryReduce(instructions, iter);
            if (newIter >= 0) {
                iter = newIter;
                instructionCount = instructions.size();
                continue;
            }
            break;
        }

        case Opcodes.POP: {
            if (iter > 0) {
                Instruction prev = instructions.get(iter - 1);
                if (prev instanceof CustomInvoke) {
                    CustomInvoke inv = (CustomInvoke) prev;
                    if (inv.methodHasReturnValue()) {
                        inv.setNoReturn(true);
                        instructions.remove(iter);
                        iter--;
                        instructionCount--;
                        continue;
                    }
                }
            }
            break;
        }

        case Opcodes.ASTORE:
        case Opcodes.ISTORE:
        case Opcodes.DSTORE:
        case Opcodes.LSTORE:
        case Opcodes.FSTORE: {
            if (iter > 0 && current instanceof VarOp) {
                VarOp currentVarOp = (VarOp) current;
                Instruction prev = instructions.get(iter - 1);
                if (prev instanceof AssignableExpression) {
                    AssignableExpression expr = (AssignableExpression) prev;
                    StringBuilder sb = new StringBuilder();
                    if (currentVarOp.assignFrom(expr, sb)) {
                        instructions.remove(iter - 1);
                        instructions.remove(iter - 1);
                        instructions.add(iter - 1,
                                new CustomIntruction(sb.toString(), sb.toString(), dependentClasses));
                        iter = iter - 1;
                        instructionCount = instructions.size();
                        continue;
                    }

                } else if (prev instanceof CustomInvoke) {
                    CustomInvoke inv = (CustomInvoke) prev;
                    StringBuilder sb = new StringBuilder();
                    if (currentVarOp.assignFrom(inv, sb)) {
                        instructions.remove(iter - 1);
                        instructions.remove(iter - 1);
                        instructions.add(iter - 1,
                                new CustomIntruction(sb.toString(), sb.toString(), dependentClasses));
                        iter = iter - 1;
                        instructionCount = instructions.size();
                        continue;
                    }
                }
            }

            break;
        }

        case Opcodes.IRETURN:
        case Opcodes.FRETURN:
        case Opcodes.ARETURN:
        case Opcodes.LRETURN:
        case Opcodes.DRETURN: {
            if (iter > 0 && current instanceof BasicInstruction) {
                Instruction prev = instructions.get(iter - 1);
                if (prev instanceof AssignableExpression) {
                    AssignableExpression expr = (AssignableExpression) prev;
                    StringBuilder sb = new StringBuilder();
                    if (expr.assignTo(null, sb)) {
                        instructions.remove(iter - 1);
                        instructions.remove(iter - 1);
                        String exprString = sb.toString().trim();
                        String retVal = exprString;
                        sb.setLength(0);
                        if (!prev.isConstant()) {
                            sb.append("\n{\n    ");
                            switch (currentOpcode) {
                            case Opcodes.IRETURN:
                                sb.append("JAVA_INT");
                                break;
                            case Opcodes.FRETURN:
                                sb.append("JAVA_FLOAT");
                                break;
                            case Opcodes.ARETURN:
                                sb.append("JAVA_OBJECT");
                                break;
                            case Opcodes.LRETURN:
                                sb.append("JAVA_LONG");
                                break;
                            case Opcodes.DRETURN:
                                sb.append("JAVA_DOUBLE");
                                break;
                            }
                            sb.append(" ___returnValue=").append(exprString).append(";\n");
                            retVal = "___returnValue";
                        }
                        if (synchronizedMethod) {
                            if (staticMethod) {
                                sb.append("    monitorExit(threadStateData, (JAVA_OBJECT)&class__");
                                sb.append(getClsName());
                                sb.append(");\n");
                            } else {
                                sb.append("    monitorExit(threadStateData, __cn1ThisObject);\n");
                            }
                        }
                        if (hasTryCatch) {
                            sb.append(
                                    "    releaseForReturnInException(threadStateData, cn1LocalsBeginInThread, methodBlockOffset); return ")
                                    .append(retVal).append(";\n");
                        } else {
                            sb.append("    releaseForReturn(threadStateData, cn1LocalsBeginInThread); return ")
                                    .append(retVal).append(";\n");
                        }
                        if (!prev.isConstant()) {
                            sb.append("}\n");
                        }

                        instructions.add(iter - 1,
                                new CustomIntruction(sb.toString(), sb.toString(), dependentClasses));
                        iter--;
                        instructionCount = instructions.size();
                        continue;

                    }
                } else if (prev instanceof CustomInvoke) {

                    CustomInvoke expr = (CustomInvoke) prev;
                    String returnType = expr.getReturnValue();
                    if (returnType != null && !"JAVA_OBJECT".equals(returnType)) {
                        // We can't safely return a JAVA_OBJECT directly because it needs to be added 
                        // to the stack for the GC
                        StringBuilder sb = new StringBuilder();
                        if (expr.appendExpression(sb)) {
                            instructions.remove(iter - 1);
                            instructions.remove(iter - 1);
                            String exprString = sb.toString().trim();
                            String retVal = exprString;
                            sb.setLength(0);
                            if (!expr.isConstant()) {

                                sb.append("\n{\n    ");
                                switch (currentOpcode) {
                                case Opcodes.IRETURN:
                                    sb.append("JAVA_INT");
                                    break;
                                case Opcodes.FRETURN:
                                    sb.append("JAVA_FLOAT");
                                    break;
                                case Opcodes.ARETURN:
                                    sb.append("JAVA_OBJECT");
                                    break;
                                case Opcodes.LRETURN:
                                    sb.append("JAVA_LONG");
                                    break;
                                case Opcodes.DRETURN:
                                    sb.append("JAVA_DOUBLE");
                                    break;
                                }

                                sb.append(" ___returnValue=").append(exprString).append(";\n");
                                retVal = "___returnValue";
                            }
                            if (synchronizedMethod) {
                                if (staticMethod) {
                                    sb.append("    monitorExit(threadStateData, (JAVA_OBJECT)&class__");
                                    sb.append(getClsName());
                                    sb.append(");\n");
                                } else {
                                    sb.append("    monitorExit(threadStateData, __cn1ThisObject);\n");
                                }
                            }
                            if (hasTryCatch) {
                                sb.append(
                                        "    releaseForReturnInException(threadStateData, cn1LocalsBeginInThread, methodBlockOffset); return ")
                                        .append(retVal).append(";\n");
                            } else {
                                sb.append(
                                        "    releaseForReturn(threadStateData, cn1LocalsBeginInThread); return ")
                                        .append(retVal).append(";\n");
                            }
                            if (!expr.isConstant()) {
                                sb.append("}\n");
                            }

                            instructions.add(iter - 1,
                                    new CustomIntruction(sb.toString(), sb.toString(), dependentClasses));
                            iter--;
                            instructionCount = instructions.size();
                            continue;

                        }
                    }
                }
            }
            break;
        }

        case Opcodes.BASTORE:
        case Opcodes.SASTORE:
        case Opcodes.CASTORE:
        case Opcodes.AASTORE:
        case Opcodes.IASTORE:
        case Opcodes.DASTORE:
        case Opcodes.LASTORE:
        case Opcodes.FASTORE: {
            if (iter > 2 && current instanceof BasicInstruction) {
                StringBuilder devNull = new StringBuilder();
                String arrayLiteral = null;
                String indexLiteral = null;
                String valueLiteral = null;
                Instruction prev3 = instructions.get(iter - 3);
                if (prev3 instanceof AssignableExpression) {
                    if (((AssignableExpression) prev3).assignTo(null, devNull)) {
                        arrayLiteral = devNull.toString().trim();

                    }
                }
                devNull.setLength(0);
                Instruction prev2 = instructions.get(iter - 2);
                if (prev2 instanceof AssignableExpression) {
                    if (((AssignableExpression) prev2).assignTo(null, devNull)) {
                        indexLiteral = devNull.toString().trim();
                    }
                }
                devNull.setLength(0);
                Instruction prev1 = instructions.get(iter - 1);

                if (prev1 instanceof AssignableExpression) {
                    if (((AssignableExpression) prev1).assignTo(null, devNull)) {
                        valueLiteral = devNull.toString().trim();
                    }
                } else if (prev1 instanceof CustomInvoke) {
                    devNull.setLength(0);
                    if (((CustomInvoke) prev1).appendExpression(devNull)) {
                        valueLiteral = devNull.toString().trim();
                    }
                }

                if (arrayLiteral != null && indexLiteral != null && valueLiteral != null) {
                    String elementType = null;
                    switch (current.getOpcode()) {
                    case Opcodes.AASTORE:
                        elementType = "OBJECT";
                        break;
                    case Opcodes.IASTORE:
                        elementType = "INT";
                        break;
                    case Opcodes.DASTORE:
                        elementType = "DOUBLE";
                        break;

                    case Opcodes.LASTORE:
                        elementType = "LONG";
                        break;
                    case Opcodes.FASTORE:
                        elementType = "FLOAT";
                        break;
                    case Opcodes.CASTORE:
                        elementType = "CHAR";
                        break;
                    case Opcodes.BASTORE:
                        elementType = "BYTE";
                        break;
                    case Opcodes.SASTORE:
                        elementType = "SHORT";
                        break;

                    }
                    if (elementType == null) {
                        break;
                    }

                    instructions.remove(iter - 3);
                    instructions.remove(iter - 3);
                    instructions.remove(iter - 3);
                    instructions.remove(iter - 3);
                    String code = "    CN1_SET_ARRAY_ELEMENT_" + elementType + "(" + arrayLiteral + ", "
                            + indexLiteral + ", " + valueLiteral + ");\n";
                    instructions.add(iter - 3, new CustomIntruction(code, code, dependentClasses));
                    iter = iter - 3;
                    instructionCount = instructions.size();
                    continue;
                }
            }

            break;
        }

        case Opcodes.FALOAD:
        case Opcodes.BALOAD:
        case Opcodes.IALOAD:
        case Opcodes.LALOAD:
        case Opcodes.DALOAD:
        case Opcodes.AALOAD:
        case Opcodes.SALOAD:
        case Opcodes.CALOAD: {
            int newIter = ArrayLoadExpression.tryReduce(instructions, iter);
            if (newIter >= 0) {
                iter = newIter;
                instructionCount = instructions.size();
                continue;
            }
            break;
        }

        /* Try to optimize if statements that just use constants
           and local variables so that they don't need the intermediate
           push and pop from the stack.
        */
        case Opcodes.IF_ACMPEQ:
        case Opcodes.IF_ACMPNE:
        case Opcodes.IF_ICMPLE:
        case Opcodes.IF_ICMPLT:
        case Opcodes.IF_ICMPNE:
        case Opcodes.IF_ICMPGT:
        case Opcodes.IF_ICMPEQ:
        case Opcodes.IF_ICMPGE: {

            if (iter > 1) {
                Instruction leftArg = instructions.get(iter - 2);
                Instruction rightArg = instructions.get(iter - 1);

                String leftLiteral = null;
                String rightLiteral = null;

                if (leftArg instanceof AssignableExpression) {
                    StringBuilder sb = new StringBuilder();
                    if (((AssignableExpression) leftArg).assignTo(null, sb)) {
                        leftLiteral = sb.toString().trim();
                    }
                } else if (leftArg instanceof CustomInvoke) {
                    CustomInvoke inv = (CustomInvoke) leftArg;
                    StringBuilder sb = new StringBuilder();
                    if (!"JAVA_OBJECT".equals(inv.getReturnValue()) && inv.appendExpression(sb)) {
                        leftLiteral = sb.toString().trim();
                    }
                }
                if (rightArg instanceof AssignableExpression) {
                    StringBuilder sb = new StringBuilder();
                    if (((AssignableExpression) rightArg).assignTo(null, sb)) {
                        rightLiteral = sb.toString().trim();
                    }
                } else if (rightArg instanceof CustomInvoke) {
                    CustomInvoke inv = (CustomInvoke) rightArg;
                    StringBuilder sb = new StringBuilder();
                    if (!"JAVA_OBJECT".equals(inv.getReturnValue()) && inv.appendExpression(sb)) {
                        rightLiteral = sb.toString().trim();
                    }
                }

                if (rightLiteral != null && leftLiteral != null) {
                    Jump jmp = (Jump) current;
                    instructions.remove(iter - 2);
                    instructions.remove(iter - 2);
                    instructions.remove(iter - 2);
                    //instructions.remove(iter-2);
                    iter -= 2;
                    //instructionCount -= 2;
                    StringBuilder sb = new StringBuilder();
                    String operator = null;
                    String opName = null;
                    switch (currentOpcode) {
                    case Opcodes.IF_ICMPLE:
                        operator = "<=";
                        opName = "IF_ICMPLE";
                        break;
                    case Opcodes.IF_ICMPLT:
                        operator = "<";
                        opName = "IF_IMPLT";
                        break;
                    case Opcodes.IF_ICMPNE:
                        operator = "!=";
                        opName = "IF_ICMPNE";
                        break;
                    case Opcodes.IF_ICMPGT:
                        operator = ">";
                        opName = "IF_ICMPGT";
                        break;
                    case Opcodes.IF_ICMPGE:
                        operator = ">=";
                        opName = "IF_ICMPGE";
                        break;
                    case Opcodes.IF_ICMPEQ:
                        operator = "==";
                        opName = "IF_ICMPEQ";
                        break;
                    case Opcodes.IF_ACMPEQ:
                        operator = "==";
                        opName = "IF_ACMPEQ";
                        break;
                    case Opcodes.IF_ACMPNE:
                        operator = "!=";
                        opName = "IF_ACMPNE";
                        break;
                    default:
                        throw new RuntimeException(
                                "Invalid operator during optimization of integer comparison");
                    }

                    sb.append("if (").append(leftLiteral).append(operator).append(rightLiteral).append(") /* ")
                            .append(opName).append(" CustomJump */ ");
                    CustomJump newJump = CustomJump.create(jmp, sb.toString());
                    //jmp.setCustomCompareCode(sb.toString());
                    newJump.setOptimized(true);
                    instructions.add(iter, newJump);
                    instructionCount = instructions.size();

                }

            }
            break;
        }
        case Opcodes.IFNONNULL:
        case Opcodes.IFNULL:

        case Opcodes.IFLE:
        case Opcodes.IFLT:
        case Opcodes.IFNE:
        case Opcodes.IFGT:
        case Opcodes.IFEQ:
        case Opcodes.IFGE: {
            String rightArg = "0";
            if (currentOpcode == Opcodes.IFNONNULL || currentOpcode == Opcodes.IFNULL) {
                rightArg = "JAVA_NULL";
            }
            if (iter > 0) {
                Instruction leftArg = instructions.get(iter - 1);

                String leftLiteral = null;

                if (leftArg instanceof AssignableExpression) {
                    StringBuilder sb = new StringBuilder();
                    if (((AssignableExpression) leftArg).assignTo(null, sb)) {
                        leftLiteral = sb.toString().trim();
                    }
                } else if (leftArg instanceof CustomInvoke) {
                    CustomInvoke inv = (CustomInvoke) leftArg;
                    StringBuilder sb = new StringBuilder();
                    if (inv.appendExpression(sb)) {
                        leftLiteral = sb.toString().trim();
                    }
                }

                if (leftLiteral != null) {
                    Jump jmp = (Jump) current;
                    instructions.remove(iter - 1);
                    instructions.remove(iter - 1);
                    //instructions.remove(iter-2);
                    iter -= 1;
                    //instructionCount -= 2;
                    StringBuilder sb = new StringBuilder();
                    String operator = null;
                    String opName = null;
                    switch (currentOpcode) {
                    case Opcodes.IFLE:
                        operator = "<=";
                        opName = "IFLE";
                        break;
                    case Opcodes.IFLT:
                        operator = "<";
                        opName = "IFLT";
                        break;
                    case Opcodes.IFNE:
                        operator = "!=";
                        opName = "IFNE";
                        break;
                    case Opcodes.IFGT:
                        operator = ">";
                        opName = "IFGT";
                        break;
                    case Opcodes.IFGE:
                        operator = ">=";
                        opName = "IFGE";
                        break;
                    case Opcodes.IFEQ:
                        operator = "==";
                        opName = "IFEQ";
                        break;
                    case Opcodes.IFNULL:
                        operator = "==";
                        opName = "IFNULL";
                        break;
                    case Opcodes.IFNONNULL:
                        operator = "!=";
                        opName = "IFNONNULL";
                        break;
                    default:
                        throw new RuntimeException(
                                "Invalid operator during optimization of integer comparison");
                    }

                    sb.append("if (").append(leftLiteral).append(operator).append(rightArg).append(") /* ")
                            .append(opName).append(" CustomJump */ ");
                    CustomJump newJump = CustomJump.create(jmp, sb.toString());
                    //jmp.setCustomCompareCode(sb.toString());
                    newJump.setOptimized(true);
                    instructions.add(iter, newJump);
                    instructionCount = instructions.size();

                }

            }
            break;
        }

        case Opcodes.INVOKEVIRTUAL:
        case Opcodes.INVOKESTATIC:
        case Opcodes.INVOKESPECIAL:
        case Opcodes.INVOKEINTERFACE: {
            if (current instanceof Invoke) {
                Invoke inv = (Invoke) current;
                List<ByteCodeMethodArg> invocationArgs = inv.getArgs();
                int numArgs = invocationArgs.size();

                //if (current.getOpcode() != Opcodes.INVOKESTATIC) {
                //    numArgs++;
                //}
                if (iter >= numArgs) {
                    String[] argLiterals = new String[numArgs];
                    StringBuilder devNull = new StringBuilder();
                    for (int i = 0; i < numArgs; i++) {
                        devNull.setLength(0);
                        Instruction instr = instructions.get(iter - numArgs + i);
                        if (instr instanceof AssignableExpression
                                && ((AssignableExpression) instr).assignTo(null, devNull)) {
                            argLiterals[i] = devNull.toString().trim();
                        } else if (instr instanceof CustomInvoke) {
                            CustomInvoke cinv = (CustomInvoke) instr;
                            devNull.setLength(0);
                            if (!"JAVA_OBJECT".equals(cinv.getReturnValue())
                                    && cinv.appendExpression(devNull)) {
                                // We can't add invocations that return objects directly
                                // because they need to be added to the stack for GC
                                argLiterals[i] = devNull.toString().trim();
                            }
                        } else if (instr instanceof ArithmeticExpression) {
                            argLiterals[i] = ((ArithmeticExpression) instr).getExpressionAsString().trim();
                        } else if (instr instanceof VarOp) {
                            VarOp var = (VarOp) instr;
                            switch (instr.getOpcode()) {
                            case Opcodes.ALOAD: {
                                if (!isStatic() && var.getIndex() == 0) {
                                    argLiterals[i] = "__cn1ThisObject";
                                } else {
                                    argLiterals[i] = "locals[" + var.getIndex() + "].data.o";
                                }
                                break;
                            }
                            case Opcodes.ILOAD: {
                                argLiterals[i] = "ilocals_" + var.getIndex() + "_";
                                break;
                            }
                            case Opcodes.ACONST_NULL: {
                                argLiterals[i] = "JAVA_NULL";
                                break;
                            }
                            case Opcodes.DLOAD: {
                                argLiterals[i] = "dlocals_" + var.getIndex() + "_";
                                break;
                            }
                            case Opcodes.FLOAD: {
                                argLiterals[i] = "flocals_" + var.getIndex() + "_";
                                break;
                            }
                            case Opcodes.LLOAD: {
                                argLiterals[i] = "llocals_" + var.getIndex() + "_";
                                break;
                            }
                            case Opcodes.ICONST_0: {
                                argLiterals[i] = "0";
                                break;
                            }
                            case Opcodes.ICONST_1: {
                                argLiterals[i] = "1";
                                break;
                            }
                            case Opcodes.ICONST_2: {
                                argLiterals[i] = "2";
                                break;
                            }
                            case Opcodes.ICONST_3: {
                                argLiterals[i] = "3";
                                break;
                            }
                            case Opcodes.ICONST_4: {
                                argLiterals[i] = "4";
                                break;
                            }
                            case Opcodes.ICONST_5: {
                                argLiterals[i] = "5";
                                break;
                            }
                            case Opcodes.ICONST_M1: {
                                argLiterals[i] = "-1";
                                break;
                            }
                            case Opcodes.LCONST_0: {
                                argLiterals[i] = "(JAVA_LONG)0";
                                break;
                            }
                            case Opcodes.LCONST_1: {
                                argLiterals[i] = "(JAVA_LONG)1";
                                break;
                            }
                            case Opcodes.BIPUSH:
                            case Opcodes.SIPUSH: {
                                argLiterals[i] = String.valueOf(var.getIndex());

                                break;
                            }
                            }
                        } else {
                            switch (instr.getOpcode()) {

                            case Opcodes.ACONST_NULL: {
                                argLiterals[i] = "JAVA_NULL";
                                break;
                            }

                            case Opcodes.ICONST_0: {
                                argLiterals[i] = "0";
                                break;
                            }
                            case Opcodes.ICONST_1: {
                                argLiterals[i] = "1";
                                break;
                            }
                            case Opcodes.ICONST_2: {
                                argLiterals[i] = "2";
                                break;
                            }
                            case Opcodes.ICONST_3: {
                                argLiterals[i] = "3";
                                break;
                            }
                            case Opcodes.ICONST_4: {
                                argLiterals[i] = "4";
                                break;
                            }
                            case Opcodes.ICONST_5: {
                                argLiterals[i] = "5";
                                break;
                            }
                            case Opcodes.ICONST_M1: {
                                argLiterals[i] = "-1";
                                break;
                            }
                            case Opcodes.LCONST_0: {
                                argLiterals[i] = "(JAVA_LONG)0";
                                break;
                            }
                            case Opcodes.LCONST_1: {
                                argLiterals[i] = "(JAVA_LONG)1";
                                break;
                            }
                            case Opcodes.BIPUSH: {
                                if (instr instanceof BasicInstruction) {
                                    argLiterals[i] = String.valueOf(((BasicInstruction) instr).getValue());
                                }
                                break;
                            }
                            case Opcodes.LDC: {
                                if (instr instanceof Ldc) {
                                    Ldc ldc = (Ldc) instr;
                                    argLiterals[i] = ldc.getValueAsString();

                                }
                                break;
                            }

                            }

                        }
                    }

                    // Check to make sure that we have all the args as literals.
                    boolean missingLiteral = false;
                    for (String lit : argLiterals) {
                        if (lit == null) {
                            missingLiteral = true;
                            break;
                        }
                    }

                    // We have all of the arguments as literals.  Let's
                    // add them to our invoke instruction.
                    if (!missingLiteral) {
                        CustomInvoke newInvoke = CustomInvoke.create(inv);
                        instructions.remove(iter);
                        instructions.add(iter, newInvoke);
                        int newIter = iter;
                        for (int i = 0; i < numArgs; i++) {
                            instructions.remove(iter - numArgs);
                            newIter--;
                            newInvoke.setLiteralArg(i, argLiterals[i]);
                        }
                        if (inv.getOpcode() != Opcodes.INVOKESTATIC) {
                            Instruction ldTarget = instructions.get(iter - numArgs - 1);
                            if (ldTarget instanceof AssignableExpression) {
                                StringBuilder targetExprStr = new StringBuilder();
                                if (((AssignableExpression) ldTarget).assignTo(null, targetExprStr)) {
                                    newInvoke.setTargetObjectLiteral(targetExprStr.toString().trim());
                                    instructions.remove(iter - numArgs - 1);
                                    newIter--;

                                }

                            } else if (ldTarget instanceof CustomInvoke) {
                                // WE Can't pass a custom invoke as the target directly
                                // because it the return value needs to be added to the 
                                // stack for the GC
                            } else {
                                switch (ldTarget.getOpcode()) {
                                case Opcodes.ALOAD: {
                                    VarOp v = (VarOp) ldTarget;
                                    if (isStatic() && v.getIndex() == 0) {
                                        newInvoke.setTargetObjectLiteral("__cn1ThisObject");
                                    } else {
                                        newInvoke.setTargetObjectLiteral("locals[" + v.getIndex() + "].data.o");
                                    }
                                    instructions.remove(iter - numArgs - 1);
                                    newIter--;
                                    break;
                                }
                                }
                            }
                        }

                        newInvoke.setOptimized(true);
                        //iter = 0;
                        instructionCount = instructions.size();
                        iter = newIter;

                    }
                }
            }
            break;
        }

        }
        astoreCalls = astoreCalls || currentOpcode == Opcodes.ASTORE || currentOpcode == Opcodes.ISTORE
                || currentOpcode == Opcodes.LSTORE || currentOpcode == Opcodes.DSTORE
                || currentOpcode == Opcodes.FSTORE;

        hasInstructions = hasInstructions | current.getOpcode() != -1;
    }
    return hasInstructions;
}

From source file:com.codename1.tools.translator.bytecodes.VarOp.java

License:Open Source License

public boolean assignFrom(AssignableExpression ex, StringBuilder b) {
    b.append("    /* VarOp.assignFrom */ ");
    switch (opcode) {
    case Opcodes.ISTORE:
        return ex.assignTo("ilocals_" + var + "_", b);

    case Opcodes.LSTORE:
        return ex.assignTo("llocals_" + var + "_", b);
    case Opcodes.FSTORE:
        return ex.assignTo("flocals_" + var + "_", b);
    case Opcodes.DSTORE:
        return ex.assignTo("dlocals_" + var + "_", b);
    case Opcodes.ASTORE: {
        StringBuilder sb = new StringBuilder();
        sb.append("locals[").append(var).append("].type=CN1_TYPE_INVALID;");
        boolean res = ex.assignTo("locals[" + var + "].data.o", sb);
        if (!res) {
            return false;
        }//w  ww .j a  va 2s.com
        sb.append("locals[").append(var).append("].type=CN1_TYPE_OBJECT;");
        b.append(sb);
        return true;
    }

    }
    b.append("\n");
    return false;
}

From source file:com.codename1.tools.translator.bytecodes.VarOp.java

License:Open Source License

public boolean assignFrom(CustomInvoke ex, StringBuilder b) {
    b.append("    /* VarOp.assignFrom */ ");
    StringBuilder sb = new StringBuilder();
    switch (opcode) {
    case Opcodes.ISTORE:
        if (ex.appendExpression(sb)) {
            b.append("ilocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
            return true;
        }//from www.  j  av  a2  s  .  c o m
        break;

    case Opcodes.LSTORE:
        if (ex.appendExpression(sb)) {
            b.append("llocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
            return true;
        }
        break;
    case Opcodes.FSTORE:
        if (ex.appendExpression(sb)) {
            b.append("flocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
            return true;
        }
        break;

    case Opcodes.DSTORE:
        if (ex.appendExpression(sb)) {
            b.append("dlocals_").append(var).append("_ = ").append(sb.toString().trim()).append(";\n");
            return true;
        }
        break;

    case Opcodes.ASTORE: {
        StringBuilder sb2 = new StringBuilder();
        //sb2.append("locals[").append(var).append("].type=CN1_TYPE_INVALID; ");
        if (ex.appendExpression(sb)) {
            sb2.append("locals[").append(var).append("].data.o = ").append(sb.toString().trim()).append(";");
            sb2.append("locals[").append(var).append("].type=CN1_TYPE_OBJECT;");
            b.append(sb2);
            return true;
        }

        break;

    }

    }
    //b.append("\n");
    return false;
}

From source file:com.codename1.tools.translator.bytecodes.VarOp.java

License:Open Source License

@Override
public void appendInstruction(StringBuilder b) {
    b.append("    ");
    switch (opcode) {
    case Opcodes.ILOAD:
        b.append("(*SP).type = CN1_TYPE_INT; /* ILOAD */ \n" + "    (*SP).data.i = ilocals_");
        b.append(var);
        b.append("_; \n    SP++;\n");
        return;//  w w w  . j a  v  a  2 s .  c om
    case Opcodes.LLOAD:
        b.append("BC_LLOAD(");
        break;
    case Opcodes.FLOAD:
        b.append("BC_FLOAD(");
        break;
    case Opcodes.DLOAD:
        b.append("BC_DLOAD(");
        break;
    case Opcodes.ALOAD:
        b.append("BC_ALOAD(");
        break;
    case Opcodes.ISTORE:
        b.append("BC_ISTORE(");
        break;
    case Opcodes.LSTORE:
        b.append("BC_LSTORE(");
        break;
    case Opcodes.FSTORE:
        b.append("BC_FSTORE(");
        break;
    case Opcodes.DSTORE:
        b.append("BC_DSTORE(");
        break;
    case Opcodes.ASTORE:
        b.append("BC_ASTORE(");
        break;
    case Opcodes.RET:
        b.append("/* RET TODO */");
        //b.append("goto label_");
        //b.append(var);
        //b.append("; /* RET */\n");
        return;
    case Opcodes.SIPUSH:
    case Opcodes.BIPUSH:
        b.append("PUSH_INT(");
        break;
    case Opcodes.NEWARRAY:
        switch (var) {
        case 4: // boolean
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_BOOLEAN, sizeof(JAVA_ARRAY_BOOLEAN), 1));\n");
            break;
        case 5: // char
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_CHAR, sizeof(JAVA_ARRAY_CHAR), 1));\n");
            break;
        case 6: // float
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_FLOAT, sizeof(JAVA_ARRAY_FLOAT), 1));\n");
            break;
        case 7: // double
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_DOUBLE, sizeof(JAVA_ARRAY_DOUBLE), 1));\n");
            break;
        case 8: // byte
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_BYTE, sizeof(JAVA_ARRAY_BYTE), 1));\n");
            break;
        case 9: // short
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_SHORT, sizeof(JAVA_ARRAY_SHORT), 1));\n");
            break;
        case 10: // int
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_INT, sizeof(JAVA_ARRAY_INT), 1));\n");
            break;
        case 11: // long 
            b.append(
                    "PUSH_OBJ(allocArray(threadStateData, POP_INT(), &class_array1__JAVA_LONG, sizeof(JAVA_ARRAY_LONG), 1));\n");
            break;
        }
        return;
    default:
        throw new RuntimeException("Missing opcode: " + opcode);
    }
    b.append(var);
    b.append(");\n");
}

From source file:com.geeksaga.light.profiler.util.ASMUtil.java

License:Apache License

public static VarInsnNode createISTORE(LocalVariableNode localVariableNode) {
    return new VarInsnNode(Opcodes.ISTORE, localVariableNode.index);
}

From source file:com.github.anba.es6draft.compiler.assembler.InstructionAssembler.java

License:Open Source License

private void store(int var, Type type) {
    assert var >= 0;
    variables.activate(var);
    switch (type.getOpcode(Opcodes.ISTORE)) {
    case Opcodes.ISTORE:
        istore(var);
        return;//from  w ww .  ja v a2 s.c om
    case Opcodes.LSTORE:
        lstore(var);
        return;
    case Opcodes.FSTORE:
        fstore(var);
        return;
    case Opcodes.DSTORE:
        dstore(var);
        return;
    case Opcodes.ASTORE:
        astore(var);
        return;
    default:
        throw new IllegalArgumentException();
    }
}

From source file:com.github.anba.es6draft.compiler.assembler.InstructionAssembler.java

License:Open Source License

private void istore(int var) {
    methodVisitor.visitVarInsn(Opcodes.ISTORE, var);
    stack.istore(var);
}

From source file:com.github.malamut2.low.AllocationMethodAdapter.java

License:Apache License

private void pushProductOfIntArrayOnStack() {
    Label beginScopeLabel = new Label();
    Label endScopeLabel = new Label();

    int dimsArrayIndex = newLocal("[I", beginScopeLabel, endScopeLabel);
    int counterIndex = newLocal("I", beginScopeLabel, endScopeLabel);
    int productIndex = newLocal("I", beginScopeLabel, endScopeLabel);
    Label loopLabel = new Label();
    Label endLabel = new Label();

    super.visitLabel(beginScopeLabel);

    // stack: ... intArray
    super.visitVarInsn(Opcodes.ASTORE, dimsArrayIndex);
    // -> stack: ...

    // counter = 0
    super.visitInsn(Opcodes.ICONST_0);
    super.visitVarInsn(Opcodes.ISTORE, counterIndex);
    // product = 1
    super.visitInsn(Opcodes.ICONST_1);
    super.visitVarInsn(Opcodes.ISTORE, productIndex);
    // loop://from   w  ww .  jav  a  2 s .  c om
    super.visitLabel(loopLabel);
    // if index >= arraylength goto end:
    super.visitVarInsn(Opcodes.ILOAD, counterIndex);
    super.visitVarInsn(Opcodes.ALOAD, dimsArrayIndex);
    super.visitInsn(Opcodes.ARRAYLENGTH);
    super.visitJumpInsn(Opcodes.IF_ICMPGE, endLabel);
    // product = product * max(array[counter],1)
    super.visitVarInsn(Opcodes.ALOAD, dimsArrayIndex);
    super.visitVarInsn(Opcodes.ILOAD, counterIndex);
    super.visitInsn(Opcodes.IALOAD);
    super.visitInsn(Opcodes.DUP);
    Label nonZeroDimension = new Label();
    super.visitJumpInsn(Opcodes.IFNE, nonZeroDimension);
    super.visitInsn(Opcodes.POP);
    super.visitInsn(Opcodes.ICONST_1);
    super.visitLabel(nonZeroDimension);
    super.visitVarInsn(Opcodes.ILOAD, productIndex);
    super.visitInsn(Opcodes.IMUL); // if overflow happens it happens.
    super.visitVarInsn(Opcodes.ISTORE, productIndex);
    // iinc counter 1
    super.visitIincInsn(counterIndex, 1);
    // goto loop
    super.visitJumpInsn(Opcodes.GOTO, loopLabel);
    // end:
    super.visitLabel(endLabel);
    // re-push dimensions array
    super.visitVarInsn(Opcodes.ALOAD, dimsArrayIndex);
    // push product
    super.visitVarInsn(Opcodes.ILOAD, productIndex);

    super.visitLabel(endScopeLabel);
}

From source file:com.github.malamut2.low.AllocationMethodAdapter.java

License:Apache License

/**
 * Reflection-based allocation (@see java.lang.reflect.Array#newInstance) is
 * triggered with a static method call (INVOKESTATIC), so we hook it here.
 * Class initialization is triggered with a constructor call (INVOKESPECIAL)
 * so we hook that here too as a proxy for the new bytecode which leaves an
 * uninitialized object on the stack that we're not allowed to touch.
 * {@link java.lang.Object#clone} is also a call to INVOKESPECIAL,
 * and is hooked here.  {@link java.lang.Class#newInstance} and
 * {@link java.lang.reflect.Constructor#newInstance} are both
 * INVOKEVIRTUAL calls, so they are hooked here, as well.
 *//*  w  w w .j av a 2 s.  c  o  m*/
@Override
public void visitMethodInsn(int opcode, String owner, String name, String signature, boolean itf) {
    if (opcode == Opcodes.INVOKESTATIC &&
    // Array does its own native allocation.  Grr.
            owner.equals("java/lang/reflect/Array") && name.equals("newInstance")) {
        if (signature.equals("(Ljava/lang/Class;I)Ljava/lang/Object;")) {

            Label beginScopeLabel = new Label();
            Label endScopeLabel = new Label();
            super.visitLabel(beginScopeLabel);

            // stack: ... class count
            int countIndex = newLocal("I", beginScopeLabel, endScopeLabel);
            super.visitVarInsn(Opcodes.ISTORE, countIndex);
            // -> stack: ... class
            pushClassNameOnStack();
            // -> stack: ... class className
            int typeNameIndex = newLocal("Ljava/lang/String;", beginScopeLabel, endScopeLabel);
            super.visitVarInsn(Opcodes.ASTORE, typeNameIndex);
            // -> stack: ... class
            super.visitVarInsn(Opcodes.ILOAD, countIndex);
            // -> stack: ... class count
            super.visitMethodInsn(opcode, owner, name, signature, itf);
            // -> stack: ... newobj
            super.visitInsn(Opcodes.DUP);
            // -> stack: ... newobj newobj
            super.visitVarInsn(Opcodes.ILOAD, countIndex);
            // -> stack: ... newobj newobj count
            super.visitInsn(Opcodes.SWAP);
            // -> stack: ... newobj count newobj
            super.visitVarInsn(Opcodes.ALOAD, typeNameIndex);
            super.visitLabel(endScopeLabel);
            // -> stack: ... newobj count newobj className
            super.visitInsn(Opcodes.SWAP);
            // -> stack: ... newobj count className newobj
            super.visitMethodInsn(Opcodes.INVOKESTATIC, recorderClass, recorderMethod, RECORDER_SIGNATURE,
                    false);
            // -> stack: ... newobj
            return;
        } else if (signature.equals("(Ljava/lang/Class;[I)Ljava/lang/Object;")) {
            Label beginScopeLabel = new Label();
            Label endScopeLabel = new Label();
            super.visitLabel(beginScopeLabel);

            int dimsArrayIndex = newLocal("[I", beginScopeLabel, endScopeLabel);
            // stack: ... class dimsArray
            pushProductOfIntArrayOnStack();
            // -> stack: ... class dimsArray product
            int productIndex = newLocal("I", beginScopeLabel, endScopeLabel);
            super.visitVarInsn(Opcodes.ISTORE, productIndex);
            // -> stack: ... class dimsArray

            super.visitVarInsn(Opcodes.ASTORE, dimsArrayIndex);
            // -> stack: ... class
            pushClassNameOnStack();
            // -> stack: ... class className
            int typeNameIndex = newLocal("Ljava/lang/String;", beginScopeLabel, endScopeLabel);
            super.visitVarInsn(Opcodes.ASTORE, typeNameIndex);
            // -> stack: ... class
            super.visitVarInsn(Opcodes.ALOAD, dimsArrayIndex);
            // -> stack: ... class dimsArray
            super.visitMethodInsn(opcode, owner, name, signature, itf);
            // -> stack: ... newobj

            super.visitInsn(Opcodes.DUP);
            // -> stack: ... newobj newobj
            super.visitVarInsn(Opcodes.ILOAD, productIndex);
            // -> stack: ... newobj newobj product
            super.visitInsn(Opcodes.SWAP);
            // -> stack: ... newobj product newobj
            super.visitVarInsn(Opcodes.ALOAD, typeNameIndex);
            super.visitLabel(endScopeLabel);
            // -> stack: ... newobj product newobj className
            super.visitInsn(Opcodes.SWAP);
            // -> stack: ... newobj product className newobj
            super.visitMethodInsn(Opcodes.INVOKESTATIC, recorderClass, recorderMethod, RECORDER_SIGNATURE,
                    false);
            // -> stack: ... newobj
            return;
        }
    }

    if (opcode == Opcodes.INVOKEVIRTUAL) {
        if ("clone".equals(name) && owner.startsWith("[")) {
            super.visitMethodInsn(opcode, owner, name, signature, itf);

            int i = 0;
            while (i < owner.length()) {
                if (owner.charAt(i) != '[') {
                    break;
                }
                i++;
            }
            if (i > 1) {
                // -> stack: ... newobj
                super.visitTypeInsn(Opcodes.CHECKCAST, owner);
                // -> stack: ... arrayref
                calculateArrayLengthAndDispatch(owner.substring(i), i);
            } else {
                // -> stack: ... newobj
                super.visitInsn(Opcodes.DUP);
                // -> stack: ... newobj newobj
                super.visitTypeInsn(Opcodes.CHECKCAST, owner);
                // -> stack: ... newobj arrayref
                super.visitInsn(Opcodes.ARRAYLENGTH);
                // -> stack: ... newobj length
                super.visitInsn(Opcodes.SWAP);
                // -> stack: ... length newobj
                invokeRecordAllocation(owner.substring(i));
            }
            return;
        }
    }

    if (opcode == Opcodes.INVOKESPECIAL) {
        if (!"clone".equals(name) || !"java/lang/Object".equals(owner)) {
            if ("<init>".equals(name) && outstandingAllocs > 0) {
                // Tricky because superclass initializers mean there can be more calls
                // to <init> than calls to NEW; hence outstandingAllocs.
                --outstandingAllocs;

                // Most of the time (i.e. in bytecode generated by javac) it is the case
                // that following an <init> call the top of the stack has a reference ot
                // the newly-initialized object.  But nothing in the JVM Spec requires
                // this, so we need to play games with the stack to make an explicit
                // extra copy (and then discard it).

                dupStackElementBeforeSignatureArgs(signature);
                super.visitMethodInsn(opcode, owner, name, signature, itf);
                super.visitLdcInsn(-1);
                super.visitInsn(Opcodes.SWAP);
                invokeRecordAllocation(owner);
                super.visitInsn(Opcodes.POP);
                return;
            }
        }
    }

    super.visitMethodInsn(opcode, owner, name, signature, itf);

}

From source file:com.github.malamut2.low.AllocationMethodAdapter.java

License:Apache License

private void dupStackElementBeforeSignatureArgs(final String sig) {
    final Label beginScopeLabel = new Label();
    final Label endScopeLabel = new Label();
    super.visitLabel(beginScopeLabel);

    Type[] argTypes = Type.getArgumentTypes(sig);
    int[] args = new int[argTypes.length];

    for (int i = argTypes.length - 1; i >= 0; --i) {
        args[i] = newLocal(argTypes[i], beginScopeLabel, endScopeLabel);
        super.visitVarInsn(argTypes[i].getOpcode(Opcodes.ISTORE), args[i]);
    }/*from w w w.  j  a va2  s.  com*/
    super.visitInsn(Opcodes.DUP);
    for (int i = 0; i < argTypes.length; ++i) {
        int op = argTypes[i].getOpcode(Opcodes.ILOAD);
        super.visitVarInsn(op, args[i]);
        if (op == Opcodes.ALOAD) {
            super.visitInsn(Opcodes.ACONST_NULL);
            super.visitVarInsn(Opcodes.ASTORE, args[i]);
        }
    }
    super.visitLabel(endScopeLabel);
}