[lld] [lld] Handle missing IRPGO profile without asserting (PR #203806)

[Peter Chen J. via llvm-commits]

peter941221 wrote:

I read the LLVM AI Tool Use Policy, Code-Review Policy and Practices, and Developer Policy.

I used OpenAI Codex while working on this change. I reviewed the generated code and text myself, reran the repro and the focused regression test, and added an AI tool disclosure to the PR description.


https://github.com/llvm/llvm-project/pull/203806