[pjmlp]

Which complex bytecodes did Java introduce?

Since hotspot was introduced,the amount of C++ on the reference JDK has been incrementally reduced between releases,with Hotspot improving its heuristics.

To the point that Graal is a pure Java JIT.

Also in the 80's and early 90's C compilers generated awfully slow code.

C developers have to thank almost 40 years of research in C optimizers and misuse of UB optimizations for the current state of C compilers quality in code generation.

[lern_too_spel]

The author means the Hotspot JVM has added intrinsics for memset, autovectorization, etc.

I don't agree with the main point of the article though. Pypy, ZipPy, etc. have shown that there are real gains from running the actual Python code faster.