vulkan: support L2_NORM with contiguous rows (#19604)

tests/test-backend-ops.cpp

@@ -5821,20 +5821,27 @@ struct test_l2_norm : public test_case {
     const ggml_type type;
     const std::array<int64_t, 4> ne;
     const float eps;
+    bool v;
 
     std::string vars() override {
-        return VARS_TO_STR2(type, ne);
+        return VARS_TO_STR4(type, ne, eps, v);
     }
 
     test_l2_norm(ggml_type type = GGML_TYPE_F32,
             std::array<int64_t, 4> ne = {64, 64, 320, 1},
-            float eps = 1e-12f)
-        : type(type), ne(ne), eps(eps) {}
+            float eps = 1e-12f,
+            bool v = false)
+        : type(type), ne(ne), eps(eps), v(v) {}
 
     ggml_tensor * build_graph(ggml_context * ctx) override {
         ggml_tensor * a = ggml_new_tensor(ctx, type, 4, ne.data());
         ggml_set_name(a, "a");
 
+        if (v) {
+            a = ggml_view_4d(ctx, a, a->ne[0]/2, a->ne[1]/2, a->ne[2]/2, a->ne[3]/2, a->nb[1], a->nb[2], a->nb[3], 0);
+            ggml_set_name(a, "view of a");
+        }
+
         ggml_tensor * out = ggml_l2_norm(ctx, a, eps);
         ggml_set_name(out, "out");
 
@@ -7596,7 +7603,8 @@ static std::vector<std::unique_ptr<test_case>> make_test_cases_eval() {
                 test_cases.emplace_back(new test_rms_norm(GGML_TYPE_F32, { n, 5, 4, 3 }, v, eps));
             }
             test_cases.emplace_back(new test_rms_norm_back(GGML_TYPE_F32, { n, 5, 4, 3 }, eps));
-            test_cases.emplace_back(new test_l2_norm(GGML_TYPE_F32, { n, 5, 4, 3 }, eps));
+            test_cases.emplace_back(new test_l2_norm(GGML_TYPE_F32, { n, 5, 4, 3 }, eps, false));
+            test_cases.emplace_back(new test_l2_norm(GGML_TYPE_F32, { n, 5, 4, 3 }, eps, true));
         }
     }