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* Load op when serializing

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* Add missing clip field

* Use make_op almost everywhere

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* More make ops for rnns

* Get rid of spaces

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* Remove operators headers

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* Remove unused op headers

* Increase line threshold

* code backup

* clang format

* change corresponding tool files

* clang format
Co-authored-by: mvermeulen <5479696+mvermeulen@users.noreply.github.com>

* Fix bug in eliminate_concat with negative axis

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* Fix unused parameter

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Co-authored-by: Shucai Xiao <shucai.xiao@amd.com>

* Fix bug in eliminate concat: dont use sorted allocations to assign offsets

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Co-authored-by: mvermeulen <5479696+mvermeulen@users.noreply.github.com>

* improve gather implementation to handle negative input indices

* clang format

* clang format

* improve concat to support neg axis input

* clang format

* fix cppcheck error

* clang format

* code cleanup

* clang format

* fix review comments

* clang format

* Fix bug in eliminate_concat

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* Skip context_free operators

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* Fix unit test

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