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[PIR] polish the backward tool op in control flow dialect. by winter-wang · Pull Request #59175 · PaddlePaddle/Paddle · GitHub
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[PIR] polish the backward tool op in control flow dialect. #59175
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你的PR提交成功，感谢你对开源项目的贡献! |
zhangbo9674
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zhangbo9674
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chen2016013
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LGTM
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Description
打磨控制流反向相关基础算子组件：
将CreateStackOp重命名为 StackCreateOp。表示一个由元祖组成的栈。类似于标准库的 std::stack<std::tuple<pir::Value......>>
将PushBackOp重命名为TuplePushOp。表示将由一组变量组成的元组（tuple）压到容器里，如果变量个数为0， 表示将一个空的tuple压到了容器里。
将PopBackOp重命名为TuplePopOp。表示将容器末尾的元组（tuple）弹出，并拆分为相应的变量。如果输出个数为0， 表示弹出来的是一个空的tuple。
HasElementsOp 的语意调整为判定该容器内是否还存在元组。
之所以做此修改，是为了考虑当while的反向算子不会用到前向算子的子局部变量时，仍然可以通过正常的容器进出操作来保证反向循环次数的正确性。
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Pcard-67164