René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Too many misses in BINARY_SUBSCR_LIST_INT","articleBody":"The expression `my_list[-1]` [gets specialized](https://github.com/python/cpython/blob/70be5e42f6e288de32e0df3c77ac22a9ddf1a74b/Python/specialize.c#L1263-L1267) to `BINARY_SUBSCR_LIST_INT` every time, then it [gets deoptimized every time](https://github.com/python/cpython/blob/70be5e42f6e288de32e0df3c77ac22a9ddf1a74b/Python/bytecodes.c#L396)\r\n\r\n~~This leads to 31%ish of `BINARY_SUBSCR_LIST_INT` executions being misses (on some programs anyway).~~ Edit: this stat was probably not accurate.\r\n\r\nShould be an easy fix.\r\n\r\n\u003c!-- gh-linked-prs --\u003e\r\n### Linked PRs\r\n* gh-100189\r\n\u003c!-- /gh-linked-prs --\u003e\r\n","author":{"url":"https://github.com/sweeneyde","@type":"Person","name":"sweeneyde"},"datePublished":"2022-12-12T05:23:05.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/100188/cpython/issues/100188"}