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Add support for ANN index for arm64 (graviton) #49669

@rhuddleston

Description

@rhuddleston

Use case

Here is says ANN is disabled due to alignment issues: https://github.com/ClickHouse/ClickHouse/blob/master/contrib/annoy-cmake/CMakeLists.txt

Describe the solution you'd like

Now that AWS has m7g instances it would be really nice to use clickhouse on these instances.

@alexey-milovidov says it should be trivial thing to fix in this bug: spotify/annoy#456

Please consider making it compatible. Also here is a benchmark showing improved performance: https://benchmark.clickhouse.com/hardware/

thank you for considering this.

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