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 +1,54 @@
+//
+//  CPURange.cpp
+//  MNN
+//
+//  Created by MNN on 2018/08/22.
+//  Copyright © 2018, Alibaba Group Holding Limited
+//
+
+#include "backend/cpu/CPURange.hpp"
+#include "backend/cpu/CPUBackend.hpp"
+#include "core/Macro.h"
+#include "core/FileLoader.hpp"
+namespace MNN {
+#ifndef MNN_REDUCE_SIZE
+class CPUExternalConst : public Execution {
+public:
+    CPUExternalConst(const Op* op, Backend* bn) : Execution(bn) {
+        auto blob = op->main_as_Blob();
+        mExternalFile = op->externalPath()->str();
+        if (nullptr != blob->external()) {
+            mOffset = blob->external()->data()[0];
+            mSize = blob->external()->data()[1];
+        }
+    }
+    virtual ErrorCode onExecute(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs) override {
+        FileLoader l(mExternalFile.c_str());
+        l.offset(mOffset);
+        l.read(outputs[0]->host<char>(), mSize);
+        return NO_ERROR;
+    }
+private:
+    std::string mExternalFile;
+    int64_t mOffset = 0;
+    int64_t mSize = 0;
+};
+#endif
+class CPUExternalConstCreator : public CPUBackend::Creator {
+public:
+    virtual Execution* onCreate(const std::vector<Tensor*>& inputs, const std::vector<Tensor*>& outputs,
+                                const MNN::Op* op, Backend* backend) const {
+#ifndef MNN_REDUCE_SIZE
+        if (op->externalPath() == nullptr) {
+            return nullptr;
+        }
+        return new CPUExternalConst(op, backend);
+#else
+        return nullptr;
+#endif
+    }
+};
+
+REGISTER_CPU_OP_CREATOR(CPUExternalConstCreator, OpType_Const);
+REGISTER_CPU_OP_CREATOR(CPUExternalConstCreator, OpType_TrainableParam);
+} // namespace MNN