LLVM has/will soon have hot-cold splitting, I wonder how much the overhead of error codes would be reduced. Requires an extra step of PGO though. https://llvm.

LLVM has/will soon have hot-cold splitting, I wonder how much the overhead of error codes would be reduced. Requires an extra step of PGO though. https://llvm.org/devmtg/2019-10/slides/Kumar-HotColdSplitting.pdf https://llvm.org/devmtg/2019-10/slides/Kumar-HotColdSplittin...