llvm-project

cf7c255b - [JumpThread] Fix `JumpThreading` pass to skip merging when both blocks contain convergence loop/entry intrinsics. (#170247)

[JumpThread] Fix `JumpThreading` pass to skip merging when both blocks contain convergence loop/entry intrinsics. (#170247) Fixes: https://github.com/llvm/llvm-project/issues/165642. After this fix, optimization passes for the example in the bug. [LLVM Spec](https://llvm.org/docs/ConvergentOperations.html#llvm-experimental-convergence-loop) states that only a single loop / entry convergence token can be included in a basic block. This PR fixes the issue in `JumpThreading` pass so that when a basic block and its predecessor both contain such convergence intrinsics, it skips merging the two blocks.