Example usage for org.objectweb.asm Opcodes IFLT

Introduction

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

Prototype

int IFLT

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

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Usage

From source file:com.trigersoft.jaque.expression.ExpressionMethodVisitor.java

License:Apache License

@Override
public void visitJumpInsn(int opcode, Label label) {
    int etype;/* w  ww.  j  a  v a  2s. c om*/
    switch (opcode) {
    case Opcodes.GOTO:

        go(label);

        return;
    default:
    case Opcodes.JSR:
        throw notLambda(opcode);
    case Opcodes.IFEQ:
        etype = ExpressionType.NotEqual; // Equal
        pushZeroConstantOrReduce();
        break;
    case Opcodes.IFNE:
        etype = ExpressionType.Equal; // NotEqual
        pushZeroConstantOrReduce();
        break;
    case Opcodes.IFLT:
        etype = ExpressionType.GreaterThanOrEqual; // LessThan
        pushZeroConstantOrReduce();
        break;
    case Opcodes.IFGE:
        etype = ExpressionType.LessThan; // GreaterThanOrEqual
        pushZeroConstantOrReduce();
        break;
    case Opcodes.IFGT:
        etype = ExpressionType.LessThanOrEqual; // GreaterThan
        pushZeroConstantOrReduce();
        break;
    case Opcodes.IFLE:
        etype = ExpressionType.GreaterThan; // LessThanOrEqual
        pushZeroConstantOrReduce();
        break;
    case Opcodes.IF_ICMPEQ:
    case Opcodes.IF_ACMPEQ: // ??
        etype = ExpressionType.NotEqual; // Equal
        break;
    case Opcodes.IF_ICMPNE:
    case Opcodes.IF_ACMPNE: // ??
        etype = ExpressionType.Equal; // NotEqual
        break;
    case Opcodes.IF_ICMPLT:
        etype = ExpressionType.GreaterThanOrEqual; // LessThan
        break;
    case Opcodes.IF_ICMPGE:
        etype = ExpressionType.LessThan; // GreaterThanOrEqual
        break;
    case Opcodes.IF_ICMPGT:
        etype = ExpressionType.LessThanOrEqual; // GreaterThan
        break;
    case Opcodes.IF_ICMPLE:
        etype = ExpressionType.GreaterThan; // LessThanOrEqual
        break;
    case Opcodes.IFNULL:
    case Opcodes.IFNONNULL:
        Expression e = Expression.isNull(_exprStack.pop());
        if (opcode == Opcodes.IFNULL) // IFNONNULL
            e = Expression.logicalNot(e);

        branch(label, e);

        return;
    }

    Expression second = _exprStack.pop();
    Expression first = _exprStack.pop();
    Expression e = Expression.binary(etype, first, second);

    branch(label, e);
}

---

From source file:com.yahoo.yqlplus.engine.internal.compiler.BooleanCompareExpression.java

@Override
public void generate(CodeEmitter code) {
    code.exec(new CompareExpression(loc, leftExpr, rightExpr));
    MethodVisitor mv = code.getMethodVisitor();
    Label isTrue = new Label();
    Label done = new Label();
    switch (booleanComparison) {
    case LT://from  w  ww  .j a  v a  2s.co m
        mv.visitJumpInsn(Opcodes.IFLT, isTrue);
        break;
    case LTEQ:
        mv.visitJumpInsn(Opcodes.IFLE, isTrue);
        break;
    case GT:
        mv.visitJumpInsn(Opcodes.IFGT, isTrue);
        break;
    case GTEQ:
        mv.visitJumpInsn(Opcodes.IFGE, isTrue);
        break;
    }
    code.emitBooleanConstant(false);
    mv.visitJumpInsn(Opcodes.GOTO, done);
    mv.visitLabel(isTrue);
    code.emitBooleanConstant(true);
    mv.visitLabel(done);
}

---

From source file:de.codesourcery.asm.util.ASMUtil.java

License:Apache License

/**
 * Check whether an instruction is a conditional branch operation.
 *  //from  ww w .j  a  va2 s .c  om
 * @param node
 * @return
 */
public static boolean isConditionalJump(AbstractInsnNode node) {
    if (node.getType() == AbstractInsnNode.JUMP_INSN) {
        switch (node.getOpcode()) {
        case Opcodes.IFEQ:
        case Opcodes.IFNE:
        case Opcodes.IFLT:
        case Opcodes.IFGE:
        case Opcodes.IFGT:
        case Opcodes.IFLE:
        case Opcodes.IF_ICMPEQ:
        case Opcodes.IF_ICMPNE:
        case Opcodes.IF_ICMPLT:
        case Opcodes.IF_ICMPGE:
        case Opcodes.IF_ICMPGT:
        case Opcodes.IF_ICMPLE:
        case Opcodes.IF_ACMPEQ:
        case Opcodes.IF_ACMPNE:
        case Opcodes.IFNULL:
        case Opcodes.IFNONNULL:
            return true;
        }
    }
    return false;
}

---

From source file:de.scoopgmbh.copper.instrument.BuildStackInfoAdapter.java

License:Apache License

@Override
public void visitJumpInsn(int arg0, Label arg1) {
    savePreviousFrame();//from ww w .  jav a2 s.c  o m
    switch (arg0) {
    case Opcodes.IF_ACMPEQ:
    case Opcodes.IF_ACMPNE:
    case Opcodes.IF_ICMPEQ:
    case Opcodes.IF_ICMPGE:
    case Opcodes.IF_ICMPGT:
    case Opcodes.IF_ICMPLE:
    case Opcodes.IF_ICMPLT:
    case Opcodes.IF_ICMPNE:
        currentFrame.popStack();
    case Opcodes.IFEQ:
    case Opcodes.IFGE:
    case Opcodes.IFGT:
    case Opcodes.IFLE:
    case Opcodes.IFLT:
    case Opcodes.IFNE:
    case Opcodes.IFNONNULL:
    case Opcodes.IFNULL:
        currentFrame.popStack();
    case Opcodes.GOTO:
        forwardFrames.put(arg1, new StackInfo(currentFrame));
        break;
    case Opcodes.JSR:
        currentFrame.pushStack(retAddressType);
        forwardFrames.put(arg1, new StackInfo(currentFrame));
        break;
    default:
        logger.debug("Unhandled: ");
    }
    if (logger.isDebugEnabled())
        logger.debug("jumpInsn " + getOpCode(arg0) + " " + arg1);
    delegate.visitJumpInsn(arg0, arg1);
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.controlflow.ConstantIfInliner.java

License:Open Source License

private boolean evalSingleOpValue(final Number op1, final int opcode) {
    switch (opcode) {
    case Opcodes.IFEQ:
        return op1.intValue() == 0;
    case Opcodes.IFNE:
        return op1.intValue() != 0;
    case Opcodes.IFLT:
        return op1.intValue() < 0;
    case Opcodes.IFGE:
        return op1.intValue() >= 0;
    case Opcodes.IFGT:
        return op1.intValue() > 0;
    case Opcodes.IFLE:
        return op1.intValue() <= 0;
    case Opcodes.IFNULL:
        return op1 == null;
    case Opcodes.IFNONNULL:
        return op1 != null;
    default://from ww w  .  j av  a  2s. com
        return false;
    }
}

---

From source file:de.tuberlin.uebb.jbop.optimizer.loop.ForLoop.java

License:Open Source License

private boolean eval(final int i, final int loopCount, final int ifNode) {
    if (ifNode == Opcodes.IF_ICMPLE) {
        return i <= loopCount;
    }//  w w w.j a  v a 2  s  .  c o m
    if (ifNode == Opcodes.IF_ICMPEQ) {
        return i == loopCount;
    }
    if (ifNode == Opcodes.IF_ICMPGE) {
        return i >= loopCount;
    }
    if (ifNode == Opcodes.IF_ICMPGT) {
        return i > loopCount;
    }
    if (ifNode == Opcodes.IF_ICMPLT) {
        return i < loopCount;
    }
    if (ifNode == Opcodes.IF_ICMPNE) {
        return i != loopCount;
    }
    if (ifNode == Opcodes.IFGE) {
        return i >= 0;
    }
    if (ifNode == Opcodes.IFEQ) {
        return i == 0;
    }
    if (ifNode == Opcodes.IFGT) {
        return i > 0;
    }
    if (ifNode == Opcodes.IFLE) {
        return i <= 0;
    }
    if (ifNode == Opcodes.IFLT) {
        return i < 0;
    }
    if (ifNode == Opcodes.IFNE) {
        return i != 0;
    }
    return false;
}

---

From source file:de.unisb.cs.st.javaslicer.common.classRepresentation.instructions.JumpInstruction.java

License:Open Source License

@Override
public String toString() {
    String condition;/*from  w  ww.  j  a v  a2s .co  m*/
    switch (getOpcode()) {
    case Opcodes.IFEQ:
        condition = "IFEQ";
        break;
    case Opcodes.IFNE:
        condition = "IFNE";
        break;
    case Opcodes.IFLT:
        condition = "IFLT";
        break;
    case Opcodes.IFGE:
        condition = "IFGE";
        break;
    case Opcodes.IFGT:
        condition = "IFGT";
        break;
    case Opcodes.IFLE:
        condition = "IFLE";
        break;
    case Opcodes.IF_ICMPEQ:
        condition = "IF_ICMPEQ";
        break;
    case Opcodes.IF_ICMPNE:
        condition = "IF_ICMPNE";
        break;
    case Opcodes.IF_ICMPLT:
        condition = "IF_ICMPLT";
        break;
    case Opcodes.IF_ICMPGE:
        condition = "IF_ICMPGE";
        break;
    case Opcodes.IF_ICMPGT:
        condition = "IF_ICMPGT";
        break;
    case Opcodes.IF_ICMPLE:
        condition = "IF_ICMPLE";
        break;
    case Opcodes.IF_ACMPEQ:
        condition = "IF_ACMPEQ";
        break;
    case Opcodes.IF_ACMPNE:
        condition = "IF_ACMPNE";
        break;
    case Opcodes.GOTO:
        condition = "GOTO";
        break;
    case Opcodes.JSR:
        condition = "JSR";
        break;
    case Opcodes.IFNULL:
        condition = "IFNULL";
        break;
    case Opcodes.IFNONNULL:
        condition = "IFNONNULL";
        break;
    default:
        assert false;
        condition = "--ERROR--";
        break;
    }

    return condition + " " + this.label;
}

---

From source file:de.unisb.cs.st.javaslicer.common.classRepresentation.instructions.JumpInstruction2.java

License:Open Source License

@Override
public String toString() {
    String condition;//from ww  w  .  j a  v a  2 s  .  c o  m
    switch (getOpcode()) {
    case Opcodes.IFEQ:
        condition = "IFEQ";
        break;
    case Opcodes.IFNE:
        condition = "IFNE";
        break;
    case Opcodes.IFLT:
        condition = "IFLT";
        break;
    case Opcodes.IFGE:
        condition = "IFGE";
        break;
    case Opcodes.IFGT:
        condition = "IFGT";
        break;
    case Opcodes.IFLE:
        condition = "IFLE";
        break;
    case Opcodes.IF_ICMPEQ:
        condition = "IF_ICMPEQ";
        break;
    case Opcodes.IF_ICMPNE:
        condition = "IF_ICMPNE";
        break;
    case Opcodes.IF_ICMPLT:
        condition = "IF_ICMPLT";
        break;
    case Opcodes.IF_ICMPGE:
        condition = "IF_ICMPGE";
        break;
    case Opcodes.IF_ICMPGT:
        condition = "IF_ICMPGT";
        break;
    case Opcodes.IF_ICMPLE:
        condition = "IF_ICMPLE";
        break;
    case Opcodes.IF_ACMPEQ:
        condition = "IF_ACMPEQ";
        break;
    case Opcodes.IF_ACMPNE:
        condition = "IF_ACMPNE";
        break;
    case Opcodes.GOTO:
        condition = "GOTO";
        break;
    case Opcodes.JSR:
        condition = "JSR";
        break;
    case Opcodes.IFNULL:
        condition = "IFNULL";
        break;
    case Opcodes.IFNONNULL:
        condition = "IFNONNULL";
        break;
    default:
        assert false;
        condition = "--ERROR--";
        break;
    }

    return condition + " " + this.target;
}

---

From source file:dyco4j.instrumentation.internals.InitTracingMethodVisitor.java

License:BSD License

@Override
public void visitJumpInsn(final int opcode, final Label label) {
    mv.visitJumpInsn(opcode, label);//  w ww .  j  a  v  a 2  s.  c  o m
    switch (opcode) {
    case Opcodes.IFEQ:
    case Opcodes.IFNE:
    case Opcodes.IFLT:
    case Opcodes.IFGE:
    case Opcodes.IFGT:
    case Opcodes.IFLE:
    case Opcodes.IFNULL:
    case Opcodes.IFNONNULL:
        this.stackFrame.pop();
        break;
    case Opcodes.IF_ICMPEQ:
    case Opcodes.IF_ICMPNE:
    case Opcodes.IF_ICMPLT:
    case Opcodes.IF_ICMPGE:
    case Opcodes.IF_ICMPGT:
    case Opcodes.IF_ICMPLE:
    case Opcodes.IF_ACMPEQ:
    case Opcodes.IF_ACMPNE:
        this.stackFrame.pop();
        this.stackFrame.pop();
        break;
    case Opcodes.JSR:
        this.stackFrame.push(OTHER);
        break;
    }
    addBranch(label);
}

---

From source file:edu.mit.streamjit.util.bytecode.MethodResolver.java

License:Open Source License

private void interpret(JumpInsnNode insn, FrameState frame, BBInfo block) {
    //All JumpInsnNodes have a target.  Find it.
    BBInfo target = blockByInsn(insn.label);
    assert target != null;

    if (insn.getOpcode() == Opcodes.GOTO) {
        block.block.instructions().add(new JumpInst(target.block));
        return;//from w  w  w.ja v  a  2 s  . c o  m
    } else if (insn.getOpcode() == Opcodes.JSR)
        throw new UnsupportedOperationException("jsr not supported; upgrade to Java 6-era class files");

    //Remaining opcodes are branches.
    BBInfo fallthrough = blocks.get(blocks.indexOf(block) + 1);
    BranchInst.Sense sense = OPCODE_TO_SENSE.get(insn.getOpcode());
    //The second operand may come from the stack or may be a constant 0 or null.
    Value right;
    switch (insn.getOpcode()) {
    case Opcodes.IFEQ:
    case Opcodes.IFNE:
    case Opcodes.IFLT:
    case Opcodes.IFGE:
    case Opcodes.IFGT:
    case Opcodes.IFLE:
        right = module.constants().getConstant(0);
        break;
    case Opcodes.IFNULL:
    case Opcodes.IFNONNULL:
        right = module.constants().getNullConstant();
        break;
    case Opcodes.IF_ICMPEQ:
    case Opcodes.IF_ICMPNE:
    case Opcodes.IF_ICMPLT:
    case Opcodes.IF_ICMPGE:
    case Opcodes.IF_ICMPGT:
    case Opcodes.IF_ICMPLE:
    case Opcodes.IF_ACMPEQ:
    case Opcodes.IF_ACMPNE:
        right = frame.stack.pop();
        break;
    default:
        throw new AssertionError("Can't happen! Branch opcode missing? " + insn.getOpcode());
    }
    //First operand always comes from the stack.
    Value left = frame.stack.pop();
    block.block.instructions().add(new BranchInst(left, sense, right, target.block, fallthrough.block));
}

---

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