[Mlir-commits] [mlir] [mlir][ArmSME] Add support for lowering masked tile_load ops (PR #70915)

[Diego Caballero]

dcaballe wrote:

```
     %row_is_active = arith.cmpi ult %slice_idx, %num_rows : index
    %slice = scf.if %row_is_active -> vector<[4]xf32> {
      %slice = vector.maskedload %src[%slice_idx, %c0], %num_cols, %pad_1d :
        memref<?x?xf32>, vector<[4]xi1>, vector<[4]xf32> into vector<[4]xf32>
      scf.yield %slice : vector<[4]xf32>
    } else {
      scf.yield %pad_1d : vector<[4]xf32>
    }
```

Could we avoid the if statement by anding the if condition with the mask that always execute the masked load?

https://github.com/llvm/llvm-project/pull/70915