Jacques Lucke
a337e7738f
Even though the `no_unique_address` attribute has only been standardized in C++20, compilers seem to support it with C++17 already. This attribute allows reducing the memory footprint of structs which have empty types as data members (usually that is an allocator or inline buffer in Blender). Previously, one had to use the empty base optimization to achieve the same effect, which requires a lot of boilerplate code. The types that benefit from this the most are `Vector` and `Array`, which usually become 8 bytes smaller. All types which use these core data structures get smaller as well of course. Differential Revision: https://developer.blender.org/D14993
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