bors c102c5cfc6 Auto merge of #96020 - martingms:optimize-relate_substs, r=nnethercote ... Micro-optimize `ty::relate::relate_substs` by avoiding `match` Was a top-20 hot function in a callgrind profile of compiling `bitmaps-3.1.0`. Yields some small speedups on that crate and some others according to local benching: Benchmark | Profile | Scenario | % Change | Significance Factor? -- | -- | -- | -- | -- bitmaps-3.1.0 | check | full | -1.88% | 9.42x bitmaps-3.1.0 | debug | full | -1.80% | 8.99x bitmaps-3.1.0 | opt | full | -1.70% | 8.49x bitmaps-3.1.0 | check | incr-full | -1.54% | 7.68x deep-vector | debug | full | 1.52% | 7.61x bitmaps-3.1.0 | debug | incr-full | -1.45% | 7.26x bitmaps-3.1.0 | opt | incr-full | -1.39% | 6.95x nalgebra-0.30.1 | check | full | -0.68% | 3.42x nalgebra-0.30.1 | debug | full | -0.64% | 3.22x nalgebra-0.30.1 | opt | full | -0.64% | 3.20x projection-caching | check | full | -0.61% | 3.05x nalgebra-0.30.1 | check | incr-full | -0.56% | 2.78x nalgebra-0.30.1 | opt | incr-full | -0.54% | 2.72x nalgebra-0.30.1 | debug | incr-full | -0.54% | 2.69x projection-caching | check | incr-full | -0.50% | 2.51x tt-muncher | opt | full | -0.48% | 2.42x projection-caching | opt | full | -0.47% | 2.37x projection-caching | debug | full | -0.47% | 2.35x projection-caching | opt | incr-full | -0.44% | 2.21x projection-caching | debug | incr-full | -0.42% | 2.08x deeply-nested-multi | check | incr-full | 0.37% | 1.87x wf-projection-stress-65510 | opt | full | -0.37% | 1.84x deep-vector | debug | incr-patched: add vec item | -0.32% | 1.61x projection-caching | debug | incr-unchanged | -0.32% | 1.60x wf-projection-stress-65510 | check | full | -0.31% | 1.55x projection-caching | opt | incr-unchanged | -0.31% | 1.53x wf-projection-stress-65510 | debug | incr-full | -0.30% | 1.51x wf-projection-stress-65510 | opt | incr-full | -0.30% | 1.51x r? `@nnethercote`		2022-04-19 10:53:53 +00:00
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src	Auto merge of #96020 - martingms:optimize-relate_substs, r=nnethercote	2022-04-19 10:53:53 +00:00
Cargo.toml	Migrate to 2021	2021-09-20 22:21:42 -04:00