Optimize len for string constants in optimizer #144140
Description
Feature or enhancement
Proposal:
Hi team, I found an optimization opportunity: len() calls on string constants can be
optimized at compile time, similar to how tuple constants are handled.
Quick testing with python -m test showed _CALL_LEN hits:
- str: 23 (6 optimizable with this patch)
- list: 28
- tuple: 4 (3 already optimized)
This patch extends the existing constant folding for len(tuple) to also handle
len("string"), replacing the function call with _SHUFFLE_3_LOAD_CONST_INLINE_BORROW
when the result is an immortal integer.
Has this already been discussed elsewhere?
No response given
Links to previous discussion of this feature:
No response