LLVM 23 delivers a 6.75% compile-time improvement (-O3), with sqlite3 seeing a 10.53% reduction. Key optimizations include replacing quadratic probing with linear probing in hash tables, switching to xxh3 hashing, compacting occupancy storage in DenseMap, and moving SmallVector's copy path out-of-line for better tail call optimization.
Background
LLVM is an open-source compiler infrastructure project widely used to build compilers for C, C++, and other languages. Compile-time performance is a major concern for large codebases, driving continuous optimization efforts in the LLVM ecosystem.
- Source
- Lobsters
- Published
- Aug 22, 2026 at 02:37 PM
- Score
- 7.0 / 10