8fb09c8d09
- Introduced `gpu.subgroup_mma_extract` operation to extract values from `!gpu.mma_matrix` by invocation and indices. - Introduced `gpu.subgroup_mma_insert` operation to insert values into `!gpu.mma_matrix` by invocation and indices. - Updated the conversion patterns to SPIR-V for both extract and insert operations. - Added test cases to validate the new operations in the GPU to SPIR-V conversion. RFC: https://discourse.llvm.org/t/rfc-add-gpu-operations-to-permute-data-in-2-loaded-mma-matrix/86148?u=hsiangkai