Yes and no.
Bold claim: “optimising compilers are operating in a region between a problem that’s not worth solving (most parts of most programs) and a problem they can’t solve (the really performance critical parts)”
I quote it (the claim from writing pointing to Bernstein’s “Death of Optimizing Compilers”) at my new thread: Rethinking optimization, lower ok for all Julia code (for e.g. faster startup) as a default? and originally found link to it at the Benchmark Game.