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[IR][TRANSFORM] Enable CopyOnWrite for TIR passes. #5309

Merged
merged 1 commit into from
Apr 12, 2020
Merged

[IR][TRANSFORM] Enable CopyOnWrite for TIR passes. #5309

merged 1 commit into from
Apr 12, 2020

Commits on Apr 11, 2020

  1. [IR][TRANSFORM] Enable CopyOnWrite for passes. 

    This PR enables the copy on write optimizations passes:
- Enable COW for IRModule both TIR and relay passes.
- Enabled COW for PrimFunc in TIR passes.

Need more thoughts into whether/how to enable COW
for relay::Function, due to some function passes depend
on the presence of IRModule for context information,
and the std::move of the related function to nullptr
might affect the related behavior.
    @tqchen
    tqchen committed Apr 11, 2020
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