Function ggml_scratch_save

ggml.c:2363–2371

IMPORTANT: when creating "opt" tensors, always save and load the scratch buffer this is an error prone process, but it is necessary to support inplace operators when using scratch buffers TODO: implement a better way

// operators when using scratch buffers
// TODO: implement a better way
static void ggml_scratch_save(struct ggml_context * ctx) {
    // this is needed to allow opt tensors to store their data
    // TODO: again, need to find a better way
    ctx->no_alloc_save = ctx->no_alloc;
    ctx->no_alloc      = false;

    ctx->scratch_save = ctx->scratch;
    ctx->scratch.data = NULL;
}

static void ggml_scratch_load(struct ggml_context * ctx) {
    ctx->no_alloc = ctx->no_alloc_save;