[llvm] [SCEV] Rework wrap-flag-inference for sext-addrec (PR #217362)

[via llvm-commits]

github-actions[bot] wrote:

test-suite diff from 56322878d28c16c172a1e46fc2db4913e7db893d...7636e157837f91d3dc64de6b8a5dd7cc122016b4: https://github.com/llvm/llvm-project/actions/runs/32623509027/artifacts/9489958294

Statistics: https://github.com/llvm/llvm-project/actions/runs/32623509027/artifacts/9489958649

## riscv64-linux-gnu `-march=rva23u64 -O3`
| ('Program', '')    |   ('size..text', 'base') |   ('size..text', 'head') |   ('size..text', 'diff') |
|:-------------------|-------------------------:|-------------------------:|-------------------------:|
| Geomean difference |                      nan |                      nan |                        0 |
## aarch64-linux-gnu `-march=armv9-a -O3`
| ('Program', '')    |   ('size..text', 'base') |   ('size..text', 'head') |   ('size..text', 'diff') |
|:-------------------|-------------------------:|-------------------------:|-------------------------:|
| Geomean difference |                      nan |                      nan |                        0 |
## x86_64-linux-gnu `-march=x86-64-v3 -O3`
| ('Program', '')    |   ('size..text', 'base') |   ('size..text', 'head') |   ('size..text', 'diff') |
|:-------------------|-------------------------:|-------------------------:|-------------------------:|
| Geomean difference |                      nan |                      nan |                        0 |


https://github.com/llvm/llvm-project/pull/217362