2015-08-14.md

Subteam report: compiler 2015-08-14

Highlights

Perhaps the most exciting thing going on right now is @huonw's PR implementing the groundwork for SIMD. We've also decided to merge the MIR RFC.

Dashboard

RFC phase

• PR #594: RFC: Support Incremental Compilation
• PR #1224: Update the RFC process with sub-teams, amongst other things.
• PR #1229: turn statically known erroneous code into a warning and continue normal code-generation
• PR #1246: UX Guidelines RFC
• FCP PR #1211: [RFC] Introduce a mid-level IR (MIR) in the compiler that will drive borrowck, trans

Implementation phase

• Issue #5016: implement "dynamic drop" semantics using flags on the stack rather than zeroing
• Issue #12634: Replace various intrinsic wrappers with intrinsic reexports
• Issue #15023: Better temporary lifetimes (tracking issue for RFC 31)
• Issue #15287: Implement Pattern Guards with Bind-By-Move
• Issue #20561: Tracking issue for Consistent no-prelude attribute (RFC 501)

High priority issues

• Issue #23286: Very confusing error on attempt to pass path::Path by value
• Issue #26251: match expression falling through?
• Issue #26656: dropck can be bypassed via a trait object method
• Issue #27060: repr(packed) allows invalid unaligned loads

Needs decision