* 更改相关文件

* Update ir.py

* 恢复相关文件

* Update ir.py

* Delete python/paddle/incubate/optimizer/modelaverage.py

* Delete modelaverage.py

* 尝试恢复文件

* Revert "尝试恢复文件"

This reverts commit 8a263cfd4642614a48a30f648c61fc801331e550.

* Revert "恢复相关文件"

This reverts commit 24249b8191fb3901681ffa9d0e1ad79ef43454de.

* Revert "Revert "尝试恢复文件""

This reverts commit 1b833d623770a851f202c68fff51e77723121a9d.

* Revert "Revert "Revert "尝试恢复文件"""

This reverts commit 64b3a816d1f0fef5ee9100480b8354749005a463.

* Revert "Delete python/paddle/incubate/optimizer/modelaverage.py"

This reverts commit 61986296bf48f7b9bef878bed6890c5dc2971481.

* Revert "更改相关文件"

This reverts commit a5ba675a948534401247b779d6a0fba0581d0628.

* Apply suggestions from code review

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Co-authored-by: NNyakku Shigure <sigure.qaq@gmail.com>