Allow packing matmul dims equal to block size

[adam-smnk]

Relaxes matmul packing blocked dimensions validation to allow packing when matmul dims >= block factor.

[adam-smnk]

No impact on benchmarks.

[rolfmorel]

Just to check: the only change is to allow the tiling validation to succeed in case matmul dims == block factor, right?

[adam-smnk]

Just to check: the only change is to allow the tiling validation to succeed in case matmul dims == block factor, right?

Yes, previously the default was dim / factor >= 2.

[rengolin]

The failure if from the previous PR, not sure why it only triggered here.

@KavithaTipturMadhu please have a look.

[KavithaTipturMadhu]

The failure if from the previous PR, not sure why it only triggered here.

@KavithaTipturMadhu please have a look.

The failing test was unstable across runs possibly due to temporary file names being assigned to environment variables. We need to think of a work-around for this, till then I've deleted it from tpp-mlir repo.