Package org.jruby.ir.instructions

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

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            if (res != null && val != null) {
                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 'v' is not live at the instruction site, and it has no side effects, mark it dead!
                // System.out.println("df var for " + v + " is " + dv.getId());
                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 {
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                    it.remove();
                    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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                    recordSimplification(res, val, valueMap, simplificationMap);
                }

                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 'v' is not live at the instruction site, and it has no side effects, mark it dead!
                // System.out.println("df var for " + v + " is " + dv);
                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 {
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                    it.remove();
                    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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