2017-10-17

Announcements

• Design meeting on debuginfo strategy tomorrow (2019-10-18) on Zulip.

• The traits working group had a design meeting yesterday on lazy normalization.

• @nikomatsakis has been looking into lazy normalization specifically for constants and hopes to have some notes to share soon.

• The LLVM ICE-breakers working group is nearly ready to go live.

• @spastorino has nearly finished interning Place projections. PR 1, PR2

• @centril is continuing to work on splitting libsyntax apart

Volunteers wanted

• Segfault compiling libc on armv7-unknown-linux-gnueabihf #62896

• Couldn’t load codegen backend on windows-gnu #61561

Backport nominations

• Add troubleshooting section to PGO chapter in rustc book #65402

  • Approved for beta backport

• Optimize try_expand_impl_trait_type #65293

  • Approved for beta backport

• Use precalculated dominators in explain_borrow #65172

  • Approved for beta backport

Working group sync

wg-mir-opt

• @wesleywiser Moved promoted MIR out of mir::Body #63580
• @wesleywiser Reimplemented the ConstProp optimization pass on top of the existing const eval code #64419
• @spastorino Converted mir::Place to no longer be a recursive data structure #63420
• There is ongoing work in both const prop and place refactorings.
• We’ve figured out a plan for “weird” place projections like dereferences (virtual locals).

Link to full conversation

wg-meta

• The Inside Rust blog has launched.

• The ICE-Breaker group has been formed!

• The LLVM ICE-Breaker group is also being formed.

Link to full conversation