alt Hacker NewsI’m always surprised to learn LLVM is so slow given that was one of the original motivations for developing it. I don’t know if that’s down to feature creep or intrinsic complexity being higher than people presumed was the case for GCC.
I’m always surprised to learn LLVM is so slow given that was one of the original motivations for developing it. I don’t know if that’s down to feature creep or intrinsic complexity being higher than people presumed was the case for GCC.
It's a compiler backend for programming languages not a runtime JIT compiler. Especially inside a DBMS a lot of the assumptions it was built with don't hold. Some people in DBMS world (mostly at TUM with Umbra/CedarDB) have written their own and others tried multi pass approaches where you have an interpreter first then a more optimised LLVM pass later.