8a469da8b2
The expansion of `memref.atomic_rmw` into a `memref.generic_atomic_rmw` for floating-point min/max operations is no longer necessary as those are now supported by the LLVM dialect and LLVM IR. Furthermore, combining this expansion with direct lowering of `generic_atomic_rmw` could leads to invalid LLVM dialect IR with `cmpxchg` operating on floating-point values that it does not support.