2019-12-05

Announcements

• @centril is working on a major refactoring of the expression, statement, and item parsers in librustc_parse

• @eddyb landed [#56231] which unblocks optimizing MIR while preserving debuginfo for variables.

Backport nominations

• “E0023: handle expected != tuple pattern type” #67044

  • Approved for beta backport

• “Fix some issues with attributes on unnamed fields” #66669

  • Approved for beta & stable backport

• “Do not ICE in if without else in async fn” #66391

  • Approved for stable backport

Working group sync

wg-rustc-dev-guide

Accomplished:

• We have a chapter about Salsa, it was summarized from this lecture.

• We have a PR for the ty chapter, it summarizes this lecture.

• We had a planning meeting, where we come up with a document with ideas and next steps for the rustc-dev-guide. We’ve basically defined kind of a roadmap and a way to work towards those goals.

Next-steps:

• Start writing an Overview chapter

• Organize a lecture about codegen mir -> llvm IR (@nagisa, maybe?)

• Organize a lecture about LLVM (@alexcrichton, maybe?)

• Organize a lecture about monomorphization/type memory layout (@oli-obk, maybe?)