chore: import upstream snapshot with attribution

2026-07-13 13:33:03 +08:00
commit 5b57521aa1
8226 changed files with 3425766 additions and 0 deletions
@@ -0,0 +1,42 @@
+//
+//  StackTest.cpp
+//  MNNTests
+//
+//  Created by MNN on 2019/12/19.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include <MNN/expr/Expr.hpp>
+#include <MNN/expr/ExprCreator.hpp>
+#include "MNNTestSuite.h"
+#include "TestUtils.h"
+
+using namespace MNN::Express;
+class StackTest : public MNNTestCase {
+public:
+    virtual ~StackTest() = default;
+    virtual bool run(int precision) {
+        auto input0 = _Input({3, 1, 2}, NCHW);
+        input0->setName("input0");
+        const float input0_data[] = {1.0, 2.0, 5.0, 6.0, 9.0, 10.0};
+        auto input0Ptr            = input0->writeMap<float>();
+        memcpy(input0Ptr, input0_data, 6 * sizeof(float));
+        input0->unMap();
+        auto input1 = _Input({3, 1, 2}, NCHW);
+        input1->setName("input1");
+        const float input1_data[] = {3.0, 4.0, 7.0, 8.0, 11.0, 12.0};
+        auto input1Ptr            = input1->writeMap<float>();
+        memcpy(input1Ptr, input1_data, 6 * sizeof(float));
+        input1->unMap();
+        auto output                             = _Stack({input0, input1}, 2);
+        const std::vector<float> expectedOutput = {1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0};
+        auto gotOutput                          = output->readMap<float>();
+        if (!checkVector<float>(gotOutput, expectedOutput.data(), 12, 0.01)) {
+            MNN_ERROR("StackTest test failed!\n");
+            return false;
+        }
+        return true;
+    }
+};
+
+MNNTestSuiteRegister(StackTest, "op/stack");