Reuse allocations in upsampling for a slight performance boost

image-rs / jpeg-decoder

JPEG decoder written in Rust

Apache License 2.0

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Closed Shnatsel closed 4 years ago

Shnatsel commented 4 years ago

Cuts the total number of allocations in half.

This matters surprisingly little. On glibc I get no difference and on musl just 3% improvement. I'm not sure if this is worth the trouble.

Shnatsel commented 4 years ago

Closing since this increases complexity and doesn't result in any measurable performance improvement.