Examples of org.jruby.compiler.ir.operands.Variable

org.jruby.compiler.ir.operands.Variable

        ExceptionRegionStartMarkerInstr rbStartInstr = new ExceptionRegionStartMarkerInstr(rBeginLabel, rEndLabel, rescueBlockLabels);
        m.addInstr(rbStartInstr);


        // Body
        Operand tmp = Nil.NIL;  // default return value if for some strange reason, we neither have the body node or the else node!
        Variable rv = m.getNewTemporaryVariable();
        if (rescueNode.getBodyNode() != null)
            tmp = build(rescueNode.getBodyNode(), m);


        // Else part of the body -- we simply fall through from the main body if there were no exceptions
        if (elseLabel != null) {

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    private void buildRescueBodyInternal(IRScope m, Node node, Variable rv, Label endLabel, List<Label> rescueBlockLabels) {
        final RescueBodyNode rescueBodyNode = (RescueBodyNode) node;
        final Node exceptionList = rescueBodyNode.getExceptionNodes();


        // Load exception & exception comparison type
        Variable exc = m.getNewTemporaryVariable();
        m.addInstr(new RECV_EXCEPTION_Instr(exc));
        // SSS: FIXME: Is this correct?
        // Compute all elements of the exception array eagerly
//        Operand excType = (exceptionList == null) ? null : build(exceptionList, m);


        // Compare and branch as necessary!
        Label uncaughtLabel = null;
        if (exceptionList != null) {
            uncaughtLabel = m.getNewLabel();
            Variable eqqResult = m.getNewTemporaryVariable();
            for (Node excType : ((ListNode) exceptionList).childNodes()) {
                m.addInstr(new EQQInstr(eqqResult, build(excType, m), exc));
                m.addInstr(new BEQInstr(eqqResult, BooleanLiteral.FALSE, uncaughtLabel));
            }
        }

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    }


    public Operand buildSuper(SuperNode superNode, IRScope s) {
        List<Operand> args  = setupCallArgs(superNode.getArgsNode(), s);
        Operand       block = setupCallClosure(superNode.getIterNode(), s);
        Variable      ret   = s.getNewTemporaryVariable();
        s.addInstr(new RubyInternalCallInstr(ret, MethAddr.SUPER, getSelf(s),
                args.toArray(new Operand[args.size()]), block));
        return ret;
    }

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            }
            s.addInstr(new LABEL_Instr(loop.iterStartLabel));


            // Looks like while can be treated as an expression!
            // So, capture the result of the body so that it can be returned.
            Variable whileResult = s.getNewTemporaryVariable();
            if (bodyNode != null) {
                Operand v = build(bodyNode, s);
                if (v != U_NIL) {
                    s.addInstr(new CopyInstr((Variable)whileResult, v));
                }

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        return Nil.NIL;
    }


    public Operand buildVCall(VCallNode node, IRScope s) {
        List<Operand> args       = new ArrayList<Operand>(); args.add(getSelf(s));
        Variable      callResult = s.getNewTemporaryVariable();
        Instr         callInstr  = new CallInstr(callResult, new MethAddr(node.getName()), getSelf(s), NO_ARGS, null);
        s.addInstr(callInstr);
        return callResult;
    }

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        return argsList;
    }
*/


    public Operand buildYield(YieldNode node, IRScope s) {
        Variable ret = s.getNewTemporaryVariable();
        s.addInstr(new YieldInstr(ret, build(node.getArgsNode(), s)));
        return ret;
    }

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       return new Array();
    }


    public Operand buildZSuper(ZSuperNode zsuperNode, IRScope s) {
        Operand    block = setupCallClosure(zsuperNode.getIterNode(), s);
        Variable   ret   = s.getNewTemporaryVariable();
        s.addInstr(new RubyInternalCallInstr(ret, MethAddr.ZSUPER, getSelf(s),
                ((IRExecutionScope) s).getClosestMethodAncestor().getCallArgs(), block));
        return ret;
    }

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        Map<Variable, Integer> starts = new HashMap<Variable, Integer>();
        SortedSet<Variable> variables = new TreeSet<Variable>();
        
        for (int i = instructions.size() - 1; i >= 0; i--) {
            Instr instr = instructions.get(i);
            Variable var = instr.result;


            if (var != null) {
                variables.add(var);
                starts.put(var, i);
            }

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            // TODO: Instruction encode whether arguments are optional/required/block
            // TODO: PErhaps this should be part of allocate and not have a generic
            //    getLiveLocalVariables...perhaps we just need this to setup static scope


            Variable variable = instr.result;


            if (variable != null && variable instanceof LocalVariable) {
                variables.add((LocalVariable) variable);
                starts.put((LocalVariable) variable, i);
            }

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            } else if (iop != Operation.LABEL) {
                currBB.addInstr(i);
            }


            if (i instanceof SET_RETADDR_Instr) {
                Variable   v  = i.getResult();
                Label      tgtLbl = ((SET_RETADDR_Instr) i).getReturnAddr();
                BasicBlock tgtBB  = retAddrTargetMap.get(v); 
                // If we have the target bb, add the edge
                // If not, record it for fixup later
                if (tgtBB != null) {

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org.jruby.compiler.ir.dataflow.analyses.LiveVariableNode

org.jruby.compiler.ir.dataflow.analyses.LiveVariablesProblem

org.jruby.compiler.ir.IRBuilder

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org.jruby.compiler.ir.representations.BasicBlock

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