lenary wrote:

@topperc the two useful changes since you last reviewed are:
- Adding a Release Note
- Changing the conditions around frame pointers to ensure we don't emit a `add 
s0, sp, -<size>` (as before), but that we do emit the `.cfi_def_cfa s0, 0` 
which informs dwarf/cfi that the way to calculate the CFA is with `s0` (the 
usual way when `hasFP(MF) == true`).

https://github.com/llvm/llvm-project/pull/128815
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