Pretty rude to start your comment with the assumption that I’m not experienced with Swift. The rest of your comment would be more useful without the unnecessary

Pretty rude to start your comment with the assumption that I’m not experienced with Swift. The rest of your comment would be more useful without the unnecessary condescension. But nothing you said contradicts what I said either. Yes it’s easy to get into slow paths with Swift, but it’s also easy not to. Granted it takes a lot of up front knowledge to do so. But even if you just stick to the LLVM portion, llvms debug mode is slower than cranelift and other toolchains debug modes. Debug doesn’t mean “no optimizations” whatsoever, nor does it mean efficient paths through the toolchain either.