Rust 1.56.0 and Rust 2021

• rust

  2,680 92,627 10.0 Rust

  Empowering everyone to build reliable and efficient software.

  

From the graph, it points out this commit. And from the description, I think it's exactly that commit and not just one close to it. I heard it was a big improvement.

https://github.com/rust-lang/rust/commit/63cc2bb

> Enable new pass manager with LLVM 13

> https://github.com/rust-lang/rust/pull/88243

• rfcs

  666 5,685 9.7 Markdown

  RFCs for changes to Rust

  

While there's nothing exactly like it yet, we did consider the ways that many similar systems work. There's a lot of similarities, even though I do think Editions end up being meaningfully distinct.

As an example, here's a comment of mine on the original RFC (which was called "epochs"): https://github.com/rust-lang/rfcs/pull/2052#issuecomment-315... (the part with "Some language development comparisons")

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• Cargo

  263 11,924 10.0 Rust

  The Rust package manager

  

• rustc-perf

  26 590 9.7 Rust

  Website for graphing performance of rustc

  

Does anyone know what change was responsible for the big improvement from a few days ago?

https://perf.rust-lang.org

It's less of a universal improvement than the pass manager, but for the benchmarks that it does impact it seems just as large.

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