From ebad7d357af18f3180e3dcec6efbcea029f88e3e Mon Sep 17 00:00:00 2001 From: Noah Lev Date: Tue, 9 Aug 2022 14:19:33 -0700 Subject: [PATCH] Add bootstrapping diagram This diagram is based on the diagram in Joshua Nelson's talk on bootstrapping at RustConf 2022 [1]. I converted it to Mermaid and made some tweaks to simplify it and bring it closer to bootstrap's terminology, and then Ralf Jung added nodes for copying artifacts. [1]: https://rustconf.com/schedule#bootstrapping-the-once-and-future-compiler Co-authored-by: Joshua Nelson Co-authored-by: Ralf Jung --- src/building/bootstrapping.md | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/src/building/bootstrapping.md b/src/building/bootstrapping.md index fd54de20..878a09e7 100644 --- a/src/building/bootstrapping.md +++ b/src/building/bootstrapping.md @@ -18,7 +18,25 @@ rustc, then uses it to compile the new compiler. ## Stages of bootstrapping -Compiling `rustc` is done in stages. +Compiling `rustc` is done in stages. Here's a diagram, adapted from Joshua Nelson's +[talk on bootstrapping][rustconf22-talk] at RustConf 2022, with detailed explanations below. +The `A`, `B`, `C`, and `D` show the ordering of the stages of bootstrapping. + +[rustconf22-talk]: https://rustconf.com/schedule#bootstrapping-the-once-and-future-compiler + +```mermaid +graph TD + s0c["stage0 compiler (1.63)"] -->|A| s0l("stage0 std (1.64)"); + s0c & s0l --- stepb[ ]:::empty; + stepb -->|B| s0ca["stage0 compiler artifacts (1.64)"]; + s0ca -->|copy| s1c["stage1 compiler (1.64)"]; + s1c -->|C| s1l("stage1 std (1.64)"); + s1c & s1l --- stepd[ ]:::empty; + stepd -->|D| s1ca["stage1 compiler artifacts (1.64)"]; + s1ca -->|copy| s2c["stage2 compiler"]; + + classDef empty width:0px,height:0px; +``` ### Stage 0