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IdString optimization
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@ -121,6 +121,12 @@ namespace RTLIL
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global_id_index_[global_id_storage_.at(idx)] = idx;
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global_refcount_storage_.at(idx)++;
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// Avoid Create->Delete->Create pattern
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static IdString last_created_id;
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put_reference(last_created_id.index_);
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last_created_id.index_ = idx;
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get_reference(last_created_id.index_);
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if (yosys_xtrace) {
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log("#X# New IdString '%s' with index %d.\n", p, idx);
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log_backtrace("-X- ", yosys_xtrace-1);
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