[Mlir-commits] [mlir] [MLIR][XeVM] Update XeVM prefetch ops. (PR #166445)

[Sang Ik Lee]

silee2 wrote:

@adam-smnk Turns out you were right about conservative evaluation.
I did more experiment and only `blockprefetch2d` was getting folded away before this PR.
`blockprefetch2d` has arg `ptr` marked with MemRead side effect.
The op does not get folded away after removing that side effect.

https://github.com/llvm/llvm-project/pull/166445