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add purify graph pass #271

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add purify graph pass #271

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xiayuqing0622
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add purify graph pass: remove node not used by output.

@xiayuqing0622 xiayuqing0622 requested a review from lynex May 19, 2021 08:35
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wenxcs commented May 19, 2021

Is there any sample to test this pass

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wenxcs commented May 26, 2021 •
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https://github.com/microsoft/nnfusion/blob/master/src/nnfusion/core/operators/generic_op/generic_op_define/Scatter.cpp

This is an op that doesn't have output.

And I think this should be called as Dead Node Elimination( which is called as Dead Statement Elimination in compiler optmization).

@wenxcs wenxcs marked this pull request as draft March 8, 2022 06:25
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@wenxcs wenxcs wenxcs approved these changes

@lynex lynex Awaiting requested review from lynex

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@xiayuqing0622 @wenxcs