Function test_view_inplace

subprojects/llama.cpp/tests/test-alloc.cpp:371–389

Check that views don't require any extra memory

// Check that views don't require any extra memory
static void test_view_inplace() {
    dummy_backend backend      = dummy_backend_init(32);
    auto [ctx, graph, ctx_ptr] = make_context();

    ggml_tensor * x[6];
    x[0] = make_input_1d(ctx, 4);                // chunk 0, [0, 16)
    x[1] = ggml_reshape_2d(ctx, x[0], 2, 2);     // view of x0
    x[2] = ggml_permute(ctx, x[1], 1, 0, 2, 3);  // view of x0
    x[3] = ggml_view_1d(ctx, x[2], 2, 4);        // view of x0
    x[4] = make_input_1d(ctx, 2);                // chunk 0, [16, 24)
    x[5] = ggml_add(ctx, x[3], x[4]);            // reuse (inplace add)
    assign_names(ctx);

    ggml_gallocr_ptr galloc = allocate_graph(graph, x[5], &backend.buffer_type);
    check_all_allocated(graph);
    check_no_overlap(graph);
    check_max_size(ctx);
    GGML_ASSERT(backend.context->allocated_total() <= 24);
}

static void test_reuse_and_free() {
    dummy_backend backend      = dummy_backend_init(40);