[Mlir-commits] [mlir] [mlir][LLVMIR] Handle anonymous TBAA roots during metadata emission (PR #169167)

[llvmlistbot at llvm.org]

Men-cotton wrote:

I've been looking into the post-merge CI failure. It appears to be a pre-existing issue in the `LLVM :: ExecutionEngine/JITLink/x86-64/MachO_weak_references.s` test and is likely unrelated to my MLIR changes.

Here is a summary of my investigation:

*   The failure (`libc++abi: Pure virtual function called!`) first appeared in https://github.com/llvm/llvm-project/pull/129702, at which point it had `Exit Code: 134`.
*   The same failure with exit code 134 was last seen in https://github.com/llvm/llvm-project/pull/156061.
*   Starting with the next merged PR, https://github.com/llvm/llvm-project/pull/160260, the exit code for this same test failure changed to `Exit Code: -6`, which matches the failure seen here.
*   I found another issue related to `MachO_weak_references.s`, but it seems to be a different problem as it reports `Exit Code: 1`.

Given that my patch only touches MLIR, it seems highly unlikely to be the root cause of this JITLink test failure. It appears to be an intermittent issue that was present before my patch landed.

https://github.com/llvm/llvm-project/pull/169167