[llvm] [LegalizeDAG][X86][AArch64][LoongArch] Freeze index when converting extract_elt/extract_subvector to load/store on stack. (PR #88985)

[Cullen Rhodes via llvm-commits]

c-rhodes wrote:

is there a reason this was never landed? I was looking at #86717 which looks fixed now https://godbolt.org/z/fqzf76qnd

Codegen changed with #192692. I can see the freeze is still there for the insert case

https://github.com/llvm/llvm-project/pull/88985