[llvm-branch-commits] [llvm] [SimplifyCFG][profcheck] Fix artificially-failing `preserve-branchweights.ll` (PR #160629)

[Nikita Popov via llvm-branch-commits]

https://github.com/nikic commented:

The test says:
```llvm
; Don't crash processing degenerate metadata.

define void @or_icmps_empty_metadata(i32 %x, i32 %y, ptr %p) {
```
So I believe the intention here is specifically to test this degenerate situation of 0, 0 branch weights.

Possibly these should be rejected by the verifier? If that were the case, there would be no need to test them here.

https://github.com/llvm/llvm-project/pull/160629