See faster-cpython/ideas#621 (comment):

Now, there's an explicit SAVE_CURRENT_IP in some macros (before every _POP_FRAME and _PUSH_FRAME). That's because it also acts as a flag for the code generator, which, combined with the preceding SAVE_IP, makes it effectively save a pointer to the next instruction (which is what's needed by the frame push/pop uops). But there's so much special-casing here that we might as well either introduce a new uop for the combined special effects or special-case _POP_FRAME and _PUSH_FRAME.

Also rename SAVE_IP to SET_IP (from the same issue). [DONE]

Linked PRs

• gh-109214: Rename SAVE_IP to _SET_IP, and similar #109285
• GH-109214: Convert _SAVE_CURRENT_IP to _SET_IP in tier 2 trace creation. #110755
• GH-109214: _SET_IP before _PUSH_FRAME (but not _POP_FRAME) #111001