Package org.jruby.ir.instructions

Examples of org.jruby.ir.instructions.Instr.markDead()

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                    // %v not used anywhere
                    List<Instr> uses = tmpVarUses.get((TemporaryVariable)v);
                    List<Instr> defs = tmpVarDefs.get((TemporaryVariable)v);
                    if (uses == null) {
                        if (i instanceof CopyInstr) {
                            i.markDead();
                            instrs.remove();
                        } else if (i instanceof CallInstr) {
                            instrs.set(((CallInstr)i).discardResult());
                        } else {
                            i.markUnusedResult();
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                    // %v not used or defined anywhere else
                    // So, %v can be replaced by the operand
                    else if ((uses.size() == 1) && (defs != null) && (defs.size() == 1) && (i instanceof CopyInstr)) {
                        CopyInstr ci = (CopyInstr)i;
                        Operand src = ci.getSource();
                        i.markDead();
                        instrs.remove();

                        // Fix up use
                        Map<Operand, Operand> copyMap = new HashMap<Operand, Operand>();
                        copyMap.put(v, src);
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                if (!res.equals(val)) {
                    recordSimplification(res, val, valueMap, simplificationMap);
                } else if (!i.hasSideEffects()) {
                    if (i instanceof CopyInstr) {
                        if (i.canBeDeleted(s)) {
                            i.markDead();
                            instrs.remove();
                        }
                    } else {
                        instrs.set(new CopyInstr(res, val));
                    }
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                if (living.get(dv.getId())) {
                    living.clear(dv.getId());
                    // System.out.println("NO! LIVE result:" + v);
                } else if (i.canBeDeleted(scope)) {
                    // System.out.println("YES!");
                    i.markDead();
                    it.remove();
                    if (v.isImplicitBlockArg()) lvp.getScope().markUnusedImplicitBlockArg();
                } else {
                    // System.out.println("NO! has side effects! Op is: " + i.getOperation());
                }
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                    if (v.isImplicitBlockArg()) lvp.getScope().markUnusedImplicitBlockArg();
                } else {
                    // System.out.println("NO! has side effects! Op is: " + i.getOperation());
                }
            } else if (i.canBeDeleted(scope)) {
                 i.markDead();
                 it.remove();
            } else {
                // System.out.println("IGNORING! No result!");
            }
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                }

                if (!i.hasSideEffects()) {
                    if (i instanceof CopyInstr) {
                        if (res.equals(val) && i.canBeDeleted(s)) {
                            i.markDead();
                            instrs.remove();
                        }
                    } else {
                        instrs.set(new CopyInstr(res, val));
                    }
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                if (living.get(dv)) {
                    living.clear(dv);
                    // System.out.println("NO! LIVE result:" + v);
                } else if (i.canBeDeleted(scope)) {
                    // System.out.println("YES!");
                    i.markDead();
                    it.remove();
                    problem.getScope().getFlags().add(IRFlags.HAS_UNUSED_IMPLICIT_BLOCK_ARG);
                } else {
                    // System.out.println("NO! has side effects! Op is: " + i.getOperation());
                }
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                    problem.getScope().getFlags().add(IRFlags.HAS_UNUSED_IMPLICIT_BLOCK_ARG);
                } else {
                    // System.out.println("NO! has side effects! Op is: " + i.getOperation());
                }
            } else if (i.canBeDeleted(scope)) {
                 i.markDead();
                 it.remove();
            } else {
                // System.out.println("IGNORING! No result!");
            }
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