tlopex opened a new issue, #19519:
URL: https://github.com/apache/tvm/issues/19519
The Relax TFLite frontend has made good progress recently:
- #18971 tracks unit test coverage for already-supported non-quantized
operators.
- #19412 tracks a first batch of missing or partial operators that are
good-first-issue or medium-sized frontend tasks.
This issue tracks the remaining larger TFLite builtin operator coverage that
is not already well-covered by those two issues.
The goal is to make the remaining gaps visible, split them by complexity,
and let contributors pick coherent operator families instead of one-off
unsupported ops.
Scope
This issue covers remaining TFLite builtin operators that fall into larger
semantic groups. This issue does not track quantized model support as a whole;
that should be tracked separately.
A. Sequence / recurrent model operators
- [ ] `RNN`
- [ ] `LSTM`
- [ ] `SVDF`
- [ ] `UNIDIRECTIONAL_SEQUENCE_RNN`
- [ ] `UNIDIRECTIONAL_SEQUENCE_LSTM`
- [ ] `BIDIRECTIONAL_SEQUENCE_RNN`
- [ ] `BIDIRECTIONAL_SEQUENCE_LSTM`
B. 3D convolution family
- [ ] `CONV_3D`
- [ ] `CONV_3D_TRANSPOSE`
C. FFT / complex operators
- [ ] `RFFT2D`
- [ ] `REAL`
- [ ] `IMAG`
- [ ] `COMPLEX_ABS`
D. Legacy embedding / sparse embedding operators
- [ ] `CONCAT_EMBEDDINGS`
- [ ] `EMBEDDING_LOOKUP_SPARSE`
- [ ] `HASHTABLE_LOOKUP`
- [ ] `LSH_PROJECTION`
- [ ] `SKIP_GRAM`
E. Window reduction
- [ ] `REDUCE_WINDOW`
F. Control flow / multi-subgraph operators
- [ ] `IF`
- [ ] `WHILE`
- [ ] `CALL`
- [ ] `CALL_ONCE`
G. Resource / variable / hashtable operators
- [ ] `VAR_HANDLE`
- [ ] `READ_VARIABLE`
- [ ] `ASSIGN_VARIABLE`
- [ ] `HASHTABLE`
- [ ] `HASHTABLE_FIND`
- [ ] `HASHTABLE_IMPORT`
- [ ] `HASHTABLE_SIZE`
H. Operator markers
- [ ] `DELEGATE`
- [ ] `PLACEHOLDER_FOR_GREATER_OP_CODES`
I. StableHLO operators in TFLite
- [ ] `STABLEHLO_ABS`
- [ ] `STABLEHLO_ADD`
- [ ] `STABLEHLO_AND`
- [ ] `STABLEHLO_BROADCAST_IN_DIM`
- [ ] `STABLEHLO_CBRT`
- [ ] `STABLEHLO_CLAMP`
- [ ] `STABLEHLO_COMPARE`
- [ ] `STABLEHLO_COMPOSITE`
- [ ] `STABLEHLO_CONCATENATE`
- [ ] `STABLEHLO_CONVERT`
- [ ] `STABLEHLO_CONVOLUTION`
- [ ] `STABLEHLO_COSINE`
- [ ] `STABLEHLO_CUSTOM_CALL`
- [ ] `STABLEHLO_DIVIDE`
- [ ] `STABLEHLO_DOT_GENERAL`
- [ ] `STABLEHLO_DYNAMIC_SLICE`
- [ ] `STABLEHLO_DYNAMIC_UPDATE_SLICE`
- [ ] `STABLEHLO_EXPONENTIAL`
- [ ] `STABLEHLO_FLOOR`
- [ ] `STABLEHLO_GATHER`
- [ ] `STABLEHLO_IOTA`
- [ ] `STABLEHLO_LOG`
- [ ] `STABLEHLO_LOGISTIC`
- [ ] `STABLEHLO_MAXIMUM`
- [ ] `STABLEHLO_MINIMUM`
- [ ] `STABLEHLO_MULTIPLY`
- [ ] `STABLEHLO_NEGATE`
- [ ] `STABLEHLO_OR`
- [ ] `STABLEHLO_PAD`
- [ ] `STABLEHLO_POWER`
- [ ] `STABLEHLO_REDUCE`
- [ ] `STABLEHLO_REDUCE_WINDOW`
- [ ] `STABLEHLO_REMAINDER`
- [ ] `STABLEHLO_RESHAPE`
- [ ] `STABLEHLO_RNG_BIT_GENERATOR`
- [ ] `STABLEHLO_RSQRT`
- [ ] `STABLEHLO_SCATTER`
- [ ] `STABLEHLO_SELECT`
- [ ] `STABLEHLO_SHIFT_LEFT`
- [ ] `STABLEHLO_SLICE`
- [ ] `STABLEHLO_SORT`
- [ ] `STABLEHLO_SUBTRACT`
- [ ] `STABLEHLO_TANH`
- [ ] `STABLEHLO_TRANSPOSE`
- [ ] `STABLEHLO_WHILE`
---
Suggested contribution workflow
1. Claim an item by commenting on this issue before starting, so we avoid
duplicated work.
2. Read a recent reference PR for handler + test style.
3. Add the handler, register in convert_map (alphabetical within its
region).
4. Add a structural-equal test following the verify(TestClass,
expected=None) pattern (test_frontend_tflite.py:56). Nightly-gated E2E
activates automatically via CI_ENV_NIGHTLY.
5. Tag the PR title [Relax][Frontend][TFLite].
References
- #18971: supported non-quantized operator test coverage
- #19412: first batch of missing / partial TFLite operator coverage
- Relax TFLite frontend: python/tvm/relax/frontend/tflite/tflite_frontend.py
- TFLite frontend tests: tests/python/relax/test_frontend_tflite.py
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