Repository: ggerganov/llama.cpp
File: ggml/src/ggml-cuda/mma.cuh (CUDA)

Code before:
            if constexpr (I == 32 && J == 8) {
#ifdef GGML_CUDA_MMA_NO_VOLTA_PERM
                return (((threadIdx.x % 16) / 4) * 8) | ((threadIdx.x / 16) * 4) | (l & 2) | (threadIdx.x % 2);
#else
                return (l & 2) | (threadIdx.x & ~2);
#endif // GGML_CUDA_MMA_NO_VOLTA_PERM
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 32 && J == 8) {
                return (threadIdx.x & 2) | (l & (4 + 1));
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#elif defined(AMD_WMMA_AVAILABLE)
#if defined(RDNA4)
        static constexpr int ne = I * J / 32;
#elif defined(RDNA3)
        static constexpr int ne = (I == 16 && J == 16) ? I * J / 32 : I * J / 16;
#endif
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I == 16 && J == 16) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 16 && J == 16) {
#if defined(RDNA4)
                return 8 * (threadIdx.x / 16) + l;
#elif defined(RDNA3)
                return 2 * l + (threadIdx.x / 16);
#endif
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 16 && J == 16) {
                return threadIdx.x % 16;
            } else {
                NO_DEVICE_CODE;

Review comment (suggestion):
```suggestion
#endif // defined(RDNA4)
```

Please add comments to indicate which `#if`/`#ifdef` and `#endif` is closing.

Code after:
            } else if constexpr (I == 32 && J == 4) {
                return 2 * (threadIdx.x / 32) + l;
            } else if constexpr (I == 16 && J == 16) {
                return threadIdx.x % 16;
            } else if constexpr (I == 32 && J == 32) {
                return threadIdx.x % 32;
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#elif __CUDA_ARCH__ == GGML_CUDA_CC_VOLTA
        static constexpr int ne = I * J / 32;
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I == 32 && J ==  8) return true;
            return false;
        }

        static __device__ __forceinline__ int get_i(const int l) {
            if constexpr (I == 32 && J == 8) {
#ifdef GGML_CUDA_MMA_NO_VOLTA_PERM
                return (((threadIdx.x % 16) / 4) * 8) + ((threadIdx.x / 16) * 4) + (l & 2) + (threadIdx.x % 2);
#else
                return (l & 2) + (threadIdx.x & ~2);
#endif // GGML_CUDA_MMA_NO_VOLTA_PERM
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }

        static __device__ __forceinline__ int get_j(const int l) {
            if constexpr (I == 32 && J == 8) {
                return (threadIdx.x & 2) + (l & (4 + 1));
            } else {
                NO_DEVICE_CODE;
                return -1;
            }
        }
#elif defined(AMD_WMMA_AVAILABLE)
#if defined(RDNA4)
        static constexpr int ne = I * J / 32;
#elif defined(RDNA3)
        static constexpr int ne = (I == 16 && J == 16) ? I * J / 32 : I * J / 16;
#endif // defined(RDNA4)
        T x[ne] = {0};

        static constexpr __device__ bool supported() {
            if (I == 16 && J == 16) return true;