Superinstructions offer a small speedup, but their existence complicates things; mainly instrumentation, and specialization. The tier2 optimizer is likely to be simpler without superinstructions. [This experiment](https://github.com/faster-cpython/benchmarking-public/tree/main/results/bm-20230526-3.13.0a0-0087a08) shows that combining the most common superinstructions into single instructions can outperform superinstructions, rendering superinstructions pointless. We have already removed almost all superinstructions in specialization. We should remove them altogether. <!-- gh-linked-prs --> ### Linked PRs * gh-105230 * gh-105326 * gh-105703 <!-- /gh-linked-prs -->