llvm-project

0b3943f3 - [MLIR][SCF] fix scf.index_switch fold convergence (#98535) (#98680)

[MLIR][SCF] fix scf.index_switch fold convergence (#98535) (#98680) If the `scf.index_switch` op has no result, the current fold logic results in an infinite loop (see #98535). The is because `fold` mechanism does not support *erasing* zero-result ops. This PR moves the fold logic to a canonicalizer and fix the issue.