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 +1,47 @@
+//
+//  ShapePack.cpp
+//  MNN
+//
+//  Created by MNN on 2019/01/10.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "shape/SizeComputer.hpp"
+#include "core/Macro.h"
+
+namespace MNN {
+
+class PackComputer : public SizeComputer {
+    virtual bool onComputeSize(const MNN::Op *op, const std::vector<Tensor *> &inputs,
+                               const std::vector<Tensor *> &outputs) const override {
+        auto &input  = inputs[0]->buffer();
+        auto &output = outputs[0]->buffer();
+        output.dimensions = input.dimensions + 1;
+        output.type       = input.type;
+
+        auto pack      = op->main_as_PackParam();
+        int axis = pack->axis();
+        if (axis < 0) {
+            axis += outputs[0]->dimensions();
+        }
+
+        if (inputs[0]->buffer().dimensions == 0) {
+            MNN_ASSERT(axis == 0);
+        }
+
+        for (int i = 0, j = 0; i < output.dimensions; i++) {
+            if (i == axis) {
+                output.dim[i].extent = (int)inputs.size();
+            } else {
+                output.dim[i].extent = input.dim[j].extent;
+                j++;
+            }
+        }
+        TensorUtils::getDescribe(outputs[0])->dimensionFormat = TensorUtils::getDescribe(inputs[0])->dimensionFormat;
+
+        return true;
+    }
+};
+
+REGISTER_SHAPE(PackComputer, OpType_Pack);
+} // namespace MNN