Rust: Move Expressions and Compiler Optimizations
Twenty pull requests merged to rust-lang/rust on May 12th, 2026, introducing move expressions syntax, new binder assumptions, and various compiler optimizations. Major changes include new language syntax, LLVM backend improvements, and testing infrastructure updates.
Duration: PT1M59S
Episode overview
This episode is a short developer briefing from Rust.
It explains recent repository work in plain language.
- Show: Rust
- Published: 2026-05-12T10:01:44Z
- Audio duration: PT1M59S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, I'm your host with the Rust development briefing for May 12th, 2026.
Twenty pull requests were merged to the main Rust repository yesterday, led by two substantial rollups from JonathanBrouwer containing multiple smaller changes.
TaKO8Ki merged the introduction of move expressions with new `move($expr)` syntax, representing a significant language addition that required changes across 48 files in the compiler's AST handling and expression lowering systems.
BoxyUwU merged experimental binder assumptions support with the `-Zassumptions-on-binders` flag, implementing new region constraints for the trait solver as part of the 2026 project goals.
scottmcm contributed two optimization improvements: simplifying the `intrinsic::raw_eq` function in MIR for better performance, and refactoring array drop glue to use slice versions rather than generating separate loops for each array length.
TimNN merged two LLVM 23 compatibility fixes, updating the `returnaddress` intrinsic return type specification and accepting float literals instead of hex in codegen tests.
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