[llvm] Bail out jump threading on indirect branches (PR #103688)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

> Failed Tests (3):
  LLVM :: Transforms/JumpThreading/pr40992-indirectbr-folding.ll
  LLVM :: Transforms/SimplifyCFG/indirectbr.ll
  LLVM :: Transforms/SimplifyCFG/switch-branch-fold-indirectbr-102351.ll

https://github.com/llvm/llvm-project/pull/103688