[llvm] [BOLT] Discard BB profiles with a hash of 0 in yaml from a Post-BAT binary (PR #169627)

[Amir Ayupov via llvm-commits]

aaupov wrote:

https://github.com/llvm/llvm-project/pull/145124 is the fix

https://github.com/llvm/llvm-project/pull/169627