[llvm] [BOLT][AArch64] Refuse to run CDSplit pass (PR #159351)

[Paschalis Mpeis via llvm-commits]

paschalis-mpeis wrote:


Hey folks,

LongJmp does not work with CDSplit. To support it we need to extend the stub groups.
We discussed this some time ago and the consensus was not to modify the pass (#121475).

If preferable, I could split the refactoring, moving SplitStrategy flags to another PR.

There are more passes/functions unsupported, but at least on AArch64 it would prevent some unexpected errors.

https://github.com/llvm/llvm-project/pull/159351