[Mlir-commits] [mlir] [mlir][CSE] fix use-after-free (PR #203849)

[Stefan Schuermans]

schuermans-roofline wrote:

> Upon second thought, is a small CSE regression test possible?

There is megabump/work/iree/third_party/llvm-project/mlir/test/Transforms/cse.mlir already. There was no functional bug. I think the use was so close to the free (no allocation in between) that it (almost?) always worked. It surfaced during the asan-enabled build/test of IREE. I am not sure if LLVM has a asan-enabled compile/run in the PR CI.

https://github.com/llvm/llvm-project/pull/203849