Examples with ATHROW org.apache.bcel.generic.ATHROW used on opensource projects

Example 1 with ATHROW

use of org.apache.bcel.generic.ATHROW in project jop by jop-devel.

the class InlineOptimizer method initialize.

@Override
public void initialize(AnalysisManager analyses, Collection<MethodInfo> roots) {
    if (!preciseCycleEstimate) {
        ExecutionContext dummy = new ExecutionContext(roots.iterator().next());
        WCETProcessorModel pm = analyses.getJCopter().getWCETProcessorModel();
        InstructionList il = new InstructionList();
        // TODO very messy approximation of exec time
        storeCycles = (int) pm.getExecutionTime(dummy, il.append(new ASTORE(10)));
        checkNPCycles = 0;
        checkNPCycles += (int) pm.getExecutionTime(dummy, il.append(new DUP()));
        checkNPCycles += (int) pm.getExecutionTime(dummy, il.append(new IFNONNULL(il.append(new ATHROW()))));
        deltaReturnCycles = (int) pm.getExecutionTime(dummy, il.append(new RETURN()));
        deltaReturnCycles -= (int) pm.getExecutionTime(dummy, il.append(new GOTO(il.getEnd())));
    }
    countInvokeSites = 0;
    countDevirtualized = 0;
}

Example 2 with ATHROW

use of org.apache.bcel.generic.ATHROW in project jop by jop-devel.

the class InstructionInterpreter method getOutEdges.

private List<Edge> getOutEdges(InstructionHandle ih) {
    List<Edge> edges = new LinkedList<Edge>();
    Instruction instr = ih.getInstruction();
    if (instr instanceof BranchInstruction) {
        if (instr instanceof Select) {
            Select s = (Select) instr;
            InstructionHandle[] target = s.getTargets();
            for (InstructionHandle aTarget : target) {
                edges.add(new Edge(ih, aTarget, EdgeType.TRUE_EDGE));
            }
            edges.add(new Edge(ih, s.getTarget(), EdgeType.FALSE_EDGE));
        } else {
            BranchInstruction b = (BranchInstruction) instr;
            edges.add(new Edge(ih, b.getTarget(), EdgeType.TRUE_EDGE));
        }
    }
    // Check if we can fall through to the next instruction
    if (ih.getNext() != null && !(instr instanceof UnconditionalBranch || instr instanceof Select || instr instanceof ReturnInstruction)) {
        if (instr instanceof BranchInstruction) {
            edges.add(new Edge(ih, ih.getNext(), EdgeType.FALSE_EDGE));
        } else {
            edges.add(new Edge(ih, ih.getNext(), EdgeType.NORMAL_EDGE));
        }
    }
    if (instr instanceof ReturnInstruction) {
        edges.add(new Edge(ih, getExitInstruction(), EdgeType.EXIT_EDGE));
    }
    if (instr instanceof ATHROW) {
    // TODO should we handle this somehow? Insert edges to the exception handlers or to an return-by-exception
    //      exit instruction?
    // for now, just ignore them
    }
    //      but for now, we just ignore them too.. in a safe way :)
    if (instr instanceof RET || instr instanceof JSR || instr instanceof JSR_W) {
        throw new JavaClassFormatError("Unsupported instruction " + instr + " in " + methodInfo);
    }
    return edges;
}