[llvm] Fix compress-opt-select test after merge #115297 (PR #117700)

[Pengcheng Wang via llvm-commits]

wangpc-pp wrote:

Don't worry and please cherry-pick the reverted commit here and reland it with your fix:
1. `cherry-pick` the reverted commit.
2. Fix the test.
3. Change the PR title to `Reapply "..."` and describe the reason why it was reverted.
4. Then we can give a LGTM after the success of CI.

https://github.com/llvm/llvm-project/pull/117700