The compiler team had our weekly triage meeting on 2019-10-17. You can find the minutes on the compiler-team repository. Each week, we have general announcements from the team followed by check-ins from two of the compiler team working groups.

Announcements

Design meeting on debuginfo strategy tomorrow (2019-10-18) on Zulip. Link to full meeting

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 which is an incremental step to MIR 2.0.

@centril is continuing to work on splitting libsyntax apart which will decrease the amount of code librustc depends on.

Working group sync

@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

Link to full conversation