1 files changed, 181 insertions, 0 deletions
diff --git a/compiler/enco/core/src/Transforms/GlobalDataGeneration.cpp b/compiler/enco/core/src/Transforms/GlobalDataGeneration.cpp
new file mode 100644
index 000000000..152477a51
--- /dev/null
+++ b/compiler/enco/core/src/Transforms/GlobalDataGeneration.cpp
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "GlobalDataGeneration.h"
+#include "Split.h"
+#include "Dims.h"
+
+#include <stdex/Memory.h>
+
+#include <map>
+
+using stdex::make_unique;
+
+namespace
+{
+
+/**
+ * @brief Manage global variable declarations
+ */
+class Global
+{
+public:
+  Global(std::ostream &os) : _os(os)
+  {
+    // DO NOTHING
+  }
+
+public:
+  /// @brief Create a global constant string (const char *) literal, and return variable name
+  enco::GlobalOffset constant(const std::string &value);
+
+  /// @brief Create a global constant array variable of type T
+  template <typename T> enco::GlobalOffset constant(const std::vector<T> &values);
+
+  /// @brief Create a global constant array variable of byte (uint8_t) type
+  enco::GlobalOffset constant(const uint8_t *base, uint32_t size);
+
+private:
+  uint32_t _offset = 0;
+  std::ostream &_os;
+};
+
+enco::GlobalOffset Global::constant(const std::string &s)
+{
+  auto const base = reinterpret_cast<const uint8_t *>(s.c_str());
+  auto const size = s.size() + 1 /* NUL */;
+  return constant(base, size);
+}
+
+template <> enco::GlobalOffset Global::constant(const std::vector<uint32_t> &values)
+{
+  auto const base = reinterpret_cast<const uint8_t *>(values.data());
+  auto const size = sizeof(uint32_t) * values.size();
+  return constant(base, size);
+}
+
+enco::GlobalOffset Global::constant(const uint8_t *base, uint32_t size)
+{
+  auto pos = _os.tellp();
+  assert(pos != -1);
+
+  _os.write(reinterpret_cast<const char *>(base), size);
+
+  return static_cast<enco::GlobalOffset>(pos);
+}
+
+} // namespace
+
+namespace
+{
+
+std::map<const ann::Operand *, enco::GlobalOffset> data_offset_ctx;
+std::map<const coco::Bag *, enco::GlobalOffset> bag_data_offset_ctx;
+
+std::map<const coco::Arg *, enco::GlobalOffset> name_offset_ctx;
+std::map<const coco::Arg *, enco::GlobalOffset> dims_offset_ctx;
+
+} // namespace
+
+namespace enco
+{
+
+GlobalOffset GlobalData::data_offset(const ann::Operand *o) { return data_offset_ctx.at(o); }
+
+GlobalOffset GlobalData::data_offset(const coco::Bag *bag)
+{
+  assert(bag_data_offset_ctx.find(bag) != bag_data_offset_ctx.end());
+  return bag_data_offset_ctx.at(bag);
+}
+
+GlobalOffset GlobalData::name_offset(const coco::Input *in) { return name_offset_ctx.at(in); }
+GlobalOffset GlobalData::dims_offset(const coco::Input *in) { return dims_offset_ctx.at(in); }
+
+GlobalOffset GlobalData::name_offset(const coco::Output *out) { return name_offset_ctx.at(out); }
+GlobalOffset GlobalData::dims_offset(const coco::Output *out) { return dims_offset_ctx.at(out); }
+
+void generate_global_data(std::ostream &os, enco::Code *code)
+{
+  auto m = code->module();
+  auto d = code->data();
+
+  auto ann_ctx = enco::SubnetManager::context(m);
+
+  auto global = make_unique<Global>(os);
+
+  //
+  // Emit Bag's weight
+  //
+  for (uint32_t n = 0; n < m->entity()->bag()->size(); ++n)
+  {
+    auto bag = m->entity()->bag()->at(n);
+
+    if (!d->allocated(bag))
+    {
+      // Skip if the weight value does not exist for a given bag
+      continue;
+    }
+
+    // NOTE The current implementation assumes that all the values are of float(fp32) type
+    // TODO Support non-float values
+    auto span = d->f32()->weight(bag);
+
+    assert(span.data() != nullptr);
+    assert(span.size() > 0);
+
+    auto const base = reinterpret_cast<const uint8_t *>(span.data());
+    uint32_t const size = span.size() * sizeof(float);
+
+    assert(bag_data_offset_ctx.find(bag) == bag_data_offset_ctx.end());
+    bag_data_offset_ctx[bag] = global->constant(base, size);
+  }
+
+  for (uint32_t n = 0; n < ann_ctx->count(); ++n)
+  {
+    auto binder = ann_ctx->nth(n);
+
+    auto emit = [&](const ann::OperandID & /*id*/, const ann::Operand *info) {
+      if (info->weight())
+      {
+        auto base = info->weight()->base();
+        auto size = info->weight()->size();
+
+        data_offset_ctx[info] = global->constant(base, size);
+      }
+    };
+    binder->module()->operand()->each(emit);
+  }
+
+  for (uint32_t n = 0; n < m->input()->size(); ++n)
+  {
+    auto input = m->input()->at(n);
+    auto dims = as_dims(input->shape());
+
+    name_offset_ctx[input] = global->constant(input->name());
+    dims_offset_ctx[input] = global->constant<uint32_t>(dims);
+  }
+
+  for (uint32_t n = 0; n < m->output()->size(); ++n)
+  {
+    auto output = m->output()->at(n);
+    auto dims = as_dims(output->shape());
+
+    name_offset_ctx[output] = global->constant(output->name());
+    dims_offset_ctx[output] = global->constant<uint32_t>(dims);
+  }
+}
+
+} // namespace enco