[llvm-branch-commits] [llvm] [SLU][profcheck] create likely branch weights for guard->branch (PR #164271)

[Mircea Trofin via llvm-branch-commits]

mtrofin wrote:

The `llvm.experimental.guard` intrinsic is a `call`, so its metadata - if present - would be one value (as per `Verifier::visitProfMetadata`). That wouldn't be a correct `branch_weights` metadata. Likely, `GI->getMetadata(LLVMContext::MD_prof)` was always `nullptr`.

We can bias away from deopt instead.

https://github.com/llvm/llvm-project/pull/164271