[llvm] fix a assert on the PR 125883 (PR #135056)

[zhijian lin via llvm-commits]

diggerlin wrote:

> This doesn't fix the downstream crash I reported in [#125883 (comment)](https://github.com/llvm/llvm-project/pull/125883#issuecomment-2787048206)

can you give me the reproduce test case , I will the test case into the PR.

https://github.com/llvm/llvm-project/pull/135056