[llvm] [JumpThread] Fix `JumpThreading` pass to skip merging when both blocks contain convergence loop/entry intrinsics. (PR #170247)

[Yanzuo Liu via llvm-commits]

zwuis wrote:

> Fixes a bug https://github.com/llvm/llvm-project/issues/165642.

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https://github.com/llvm/llvm-project/pull/170247