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# Objective Based on the discussion in #14864, I wanted to experiment with the core `GenericTypeCell` type, whose `get_or_insert` method accounted for 2% of the final binary size of the `3d_scene` example. The reason for this large percentage is likely because the type is fundamental to the rest of Bevy while having 3 generic parameters (the type stored `T`, the type to retrieve `G`, and the function used to insert a new value `F`). - Acts on #14864 ## Solution - Split `get_or_insert` into smaller functions with minimised parameterisation. These new functions are private as to preserve the public facing API, but could be exposed if desired. ## Testing - Ran CI locally. - Used `cargo bloat --release --example 3d_scene -n 100000 --message-format json > out.json` and @cart's [bloat analyzer](https://gist.github.com/cart/722756ba3da0e983d207633e0a48a8ab) to measure a 428KiB reduction in binary size when compiling on Windows 10. - ~I have _not_ benchmarked to determine if this improves/hurts performance.~ See [below](https://github.com/bevyengine/bevy/pull/14865#issuecomment-2306083606). ## Notes In my opinion this seems like a good test-case for the concept of debloating generics within the Bevy codebase. I believe the performance impact here is negligible in either direction (at runtime and compile time), but the binary reduction is measurable and quite significant for a relatively minor change in code. --------- Co-authored-by: Gino Valente <49806985+MrGVSV@users.noreply.github.com> |
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| bevy_a11y | ||
| bevy_animation | ||
| bevy_app | ||
| bevy_asset | ||
| bevy_audio | ||
| bevy_color | ||
| bevy_core | ||
| bevy_core_pipeline | ||
| bevy_derive | ||
| bevy_dev_tools | ||
| bevy_diagnostic | ||
| bevy_dylib | ||
| bevy_ecs | ||
| bevy_encase_derive | ||
| bevy_gilrs | ||
| bevy_gizmos | ||
| bevy_gltf | ||
| bevy_hierarchy | ||
| bevy_input | ||
| bevy_internal | ||
| bevy_log | ||
| bevy_macro_utils | ||
| bevy_math | ||
| bevy_mikktspace | ||
| bevy_pbr | ||
| bevy_picking | ||
| bevy_ptr | ||
| bevy_reflect | ||
| bevy_render | ||
| bevy_scene | ||
| bevy_sprite | ||
| bevy_state | ||
| bevy_tasks | ||
| bevy_text | ||
| bevy_time | ||
| bevy_transform | ||
| bevy_ui | ||
| bevy_utils | ||
| bevy_window | ||
| bevy_winit | ||