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Support alias_data in the TFLite XNNPack delegate weight cache provider. #6374

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Support alias_data in the TFLite XNNPack delegate weight cache provider. #6374

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7 changes: 7 additions & 0 deletions tflite/delegates/xnnpack/weight_cache.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -760,6 +760,13 @@ enum xnn_status MMapWeightCacheProvider::delete_cache(void* context) {
return xnn_status_success;
}

enum xnn_status MMapWeightCacheProvider::alias_data(void* context, void* alias,
void* original) {
reinterpret_cast<MMapWeightCacheProvider*>(context)->RemapDataBuffer(
alias, original);
return xnn_status_success;
}

PackIdentifier MMapWeightCacheProvider::BuildPackIdentifier(
const xnn_weights_cache_look_up_key& key) {
const auto get_buffer_id = [&](const void* buffer) -> size_t {
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7 changes: 6 additions & 1 deletion tflite/delegates/xnnpack/weight_cache.h
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Expand Up @@ -433,6 +433,9 @@ class MMapWeightCacheProvider {
// C interface: `xnn_weights_cache_provider` callback.
static enum xnn_status delete_cache(void* context);

// C interface: `xnn_weights_cache_provider` callback.
static enum xnn_status alias_data(void* context, void* alias, void* original);

// Checks if caches misses have happened and updates the cache file stale
// flag.
bool WriteCacheMissFlag();
Expand All @@ -453,7 +456,9 @@ class MMapWeightCacheProvider {
/*look_up_or_insert=*/MMapWeightCacheProvider::look_up_or_insert,
/*is_finalized=*/MMapWeightCacheProvider::is_finalized,
/*offset_to_addr=*/MMapWeightCacheProvider::offset_to_addr,
/*delete_cache=*/MMapWeightCacheProvider::delete_cache};
/*delete_cache=*/MMapWeightCacheProvider::delete_cache,
/*alias_data=*/MMapWeightCacheProvider::alias_data,
};

// Path to the cache file.
std::string file_path_;
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