[llvm] [instCombine][bugfix] Fix crash caused by using of cast in instCombineSVECmpNE (PR #102472)

[via llvm-commits]

wuxie2022 wrote:

> Fix looks good but the test case can be significantly reduced. It looks like you can just add to `llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-opts-cmpne.ll` by cloning `dupq_b_0` as `dupq_b_idx` whereby it takes an `%idx` function parameter that it uses when calling `sve.dupq.lane`.

Thank you for your review! I have simplified the case in 'sve-inst-combine-cmpne.ll'. But it can't be merged into sve-intrinsic-opts-cmpne.ll, because the compile command of my new test case must contain '-mtriple=aarch64-unknown-linux-gnu' and '-O2'.



https://github.com/llvm/llvm-project/pull/102472