[llvm] LAA: strip unnecessary getUniqueCastUse (PR #92119)

[Yingwei Zheng via llvm-commits]

dtcxzyw wrote:

This patch causes `SCEVExpander` to emit more `ident.check` checks when building openblas. Is it expected?

See also https://github.com/dtcxzyw/llvm-opt-benchmark/issues/743 and https://github.com/dtcxzyw/llvm-opt-benchmark/commit/6844857679bc8ca4054ec4b8449bf16586f17db8.



https://github.com/llvm/llvm-project/pull/92119