[Autotuner] Add block level emitter backend for Triton fusion (2). #96796
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This change continues the work on the Triton block-level fusion emitter backend, which enables autotuning of tile configurations for custom Triton fusions in XLA. This backend implements the following core interfaces: - GetSupportedConfigs: Enumerates all supported combinations of tile sizes for the output tensors. The generated configs can be used during autotuning to explore different performance candidates. - GetDefaultConfig: Provides a default tile configuration for a given Triton fusion, used as a fallback when no tuning data is available. (Implemented in a previous PR-28515) - ApplyConfig: Applies a selected block-level fusion configuration to a Triton fusion instruction by updating its GpuBackendConfig. (will be added in the next PR) PiperOrigin-RevId: 784233964
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[Autotuner] Add block level emitter backend for Triton fusion (2).
This change continues the work on the Triton block-level fusion emitter backend, which enables autotuning of tile configurations for custom Triton fusions in XLA.
This backend implements the following core interfaces:
GetSupportedConfigs: Enumerates all supported combinations of tile sizes for the output tensors. The generated configs can be used during autotuning to explore different performance candidates.
GetDefaultConfig: Provides a default tile configuration for a given Triton fusion, used as a fallback when no tuning data is available. (Implemented in a previous PR-28515)
ApplyConfig: Applies a selected block-level fusion configuration to a Triton fusion instruction by updating its GpuBackendConfig. (will be added in the next PR)