bors 840ed5d133 Auto merge of #114860 - Zoxc:sharded-layout, r=SparrowLii ... Make `Sharded` an enum and specialize it for the single thread case This changes `Sharded` to use a single shard by an enum, reducing the size of `Sharded` for greater cache efficiency. Performance improvement with 1 thread and `cfg(parallel_compiler)`: <table><tr><td rowspan="2">Benchmark</td><td colspan="1"><b>Before</b></th><td colspan="2"><b>After</b></th></tr><tr><td align="right">Time</td><td align="right">Time</td><td align="right">%</th></tr><tr><td>🟣 <b>clap</b>:check</td><td align="right">1.7009s</td><td align="right">1.6748s</td><td align="right">💚 -1.53%</td></tr><tr><td>🟣 <b>hyper</b>:check</td><td align="right">0.2525s</td><td align="right">0.2451s</td><td align="right">💚 -2.90%</td></tr><tr><td>🟣 <b>regex</b>:check</td><td align="right">0.9519s</td><td align="right">0.9353s</td><td align="right">💚 -1.74%</td></tr><tr><td>🟣 <b>syn</b>:check</td><td align="right">1.5504s</td><td align="right">1.5280s</td><td align="right">💚 -1.45%</td></tr><tr><td>🟣 <b>syntex_syntax</b>:check</td><td align="right">5.9536s</td><td align="right">5.8873s</td><td align="right">💚 -1.11%</td></tr><tr><td>Total</td><td align="right">10.4092s</td><td align="right">10.2706s</td><td align="right">💚 -1.33%</td></tr><tr><td>Summary</td><td align="right">1.0000s</td><td align="right">0.9825s</td><td align="right">💚 -1.75%</td></tr></table> I did see an unexpected 0.23% change for the serial compiler, so this could use a perf run to see if that reproduces. cc `@SparrowLii`		2023-08-24 02:24:25 +00:00
..
dep_graph	Keep SHARDS fixed instead of a function of cfg!(parallel_compiler)	2023-08-16 10:00:25 +02:00
ich	Use Option::is_some_and and Result::is_ok_and in the compiler	2023-05-24 14:20:41 +00:00
query	Remove conditional use of Sharded from query caches	2023-08-16 14:16:05 +02:00
cache.rs	Remove a fishy Clone impl	2023-04-04 09:01:44 +00:00
error.rs	moved note as unspanned note, moved note to the bottom of the msg	2023-07-18 21:53:34 -04:00
lib.rs	Add rustc_fluent_macro to decouple fluent from rustc_macros	2023-04-18 18:56:22 +00:00
values.rs	Show which type was not specialized on query cycle misuse	2023-07-05 07:30:28 +00:00