155 static size_t FN(RemapBlockIds)(uint8_t* block_ids, const size_t length,  in FN()
164     BROTLI_DCHECK(block_ids[i] < num_histograms);  in FN()
165     if (new_id[block_ids[i]] == kInvalidId) {  in FN()
166       new_id[block_ids[i]] = next_id++;  in FN()
170     block_ids[i] = (uint8_t)new_id[block_ids[i]];  in FN()
171     BROTLI_DCHECK(block_ids[i] < num_histograms);  in FN()
178                                      const uint8_t* block_ids,  in FN()
184     FN(HistogramAdd)(&histograms[block_ids[i]], data[i]);  in FN()
191                               uint8_t* block_ids,  in FN()
231       if (i + 1 == length || block_ids[i] != block_ids[i + 1]) {  in FN()
399     uint8_t* block_ids = BROTLI_ALLOC(m, uint8_t, length);  in FN()  local
414                                   block_ids);  in FN()
415       num_histograms = FN(RemapBlockIds)(block_ids, length,  in FN()
417       FN(BuildBlockHistograms)(data, length, block_ids,  in FN()
425     FN(ClusterBlocks)(m, data, length, num_blocks, block_ids, split);  in FN()
427     BROTLI_FREE(m, block_ids);  in FN()