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14cef9dd3d
This is part of a larger effort to improve the memory layout of AST nodes of the self-hosted parser to reduce wasted memory. Reduction of wasted memory also translates to improved performance because of fewer memory allocations, and fewer cache misses. Compared to master, when running `zig fmt` on the std lib: * cache-misses: 801,829 => 768,624 * instructions: 3,234,877,167 => 3,232,075,022 * peak memory: 81480 KB => 75964 KB