[Relay][Pass] SimplifyCastLike/Cast and ConcretizeFullLikeRewrite rewrites for SimplifyExpr#7827
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comaniac merged 4 commits intoapache:mainfrom Apr 14, 2021
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comaniac
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Apr 12, 2021
| /*! | ||
| * \brief SimplifyCast matches the pattern of cast data to the same dtype. | ||
| */ | ||
| class SimplifyCast : public DFPatternRewrite { |
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Seems like these two patterns be merged to one?
pattern_ = IsOp("cast_like")({data_pat_, like_pat_}) || IsOp("cast")({data_pat_});
And both patterns can use like_ty = pre->checked_type().as<TensorTypeNode>();.
comaniac
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Apr 13, 2021
| } | ||
| }); | ||
| pass_seqs.push_back(transform::EliminateCommonSubexpr(fskip)); | ||
| pass_seqs.push_back(transform::InferType()); |
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Do we really need this? InferType is already in the requirement of SimplifyExpr. Other existing patterns also refer to checked_type_ so it should be fine.
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Emmm... I dont know why Ci fails, just try it
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From the CI it does look like the type is missing. Since InferType is executed before and after SimplifyExpr, one possibility is your data is already mutated by previous patterns in this pass and that callback didn't manually specify the type.
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trevor-m
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May 6, 2021
…rites for SimplifyExpr (apache#7827)
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…rites for SimplifyExpr (apache#7827)
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…rites for SimplifyExpr (apache#7827)
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…rites for SimplifyExpr (apache#7827)
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ConcretizeFullLikeRewrite:full_like->fullwhen known shapeSimplifyCastLike/Cast:cast(data, dtype)orcast_like(data, dtype_like)->data, when the input and output have the same dtype@yzhliu @comaniac @altanh