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 +1,43 @@
+//
+//  ScaleGrad.cpp
+//  MNN
+//
+//  Created by MNN on 2022/08/11.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "OpGrad.hpp"
+#include "core/Macro.h"
+using namespace std;
+namespace MNN {
+using namespace MNN::Express;
+
+class ScaleGrad : public OpGrad {
+public:
+    virtual std::vector<Express::VARP> onGrad(Express::EXPRP expr,
+                                              const std::vector<Express::VARP>& backwardOutput) override {
+        auto inputs = expr->inputs();
+        std::vector<VARP> res(inputs.size(), nullptr);
+        auto outputDiff = backwardOutput[0];
+
+        std::unique_ptr<OpT> forwardOp(expr->get()->UnPack());
+        auto param = forwardOp->main.AsScale();
+        auto channels = param->channels;
+        auto scale = param->scaleData;
+        auto zeros = std::vector<float>(scale.size(), 0.0f);
+
+        res[0] = _Scale(outputDiff, channels, std::move(scale), std::move(zeros));
+
+        return res;
+    }
+};
+
+static void _create() {
+    static ScaleGrad _c;
+    OpGrad::insert(OpType_Scale, &_c);
+
+}
+
+REGISTER_GRAD(ScaleGrad_cpp, _create);
+};
+