1 files changed, 126 insertions, 0 deletions
diff --git a/contrib/llvm-project/llvm/lib/Analysis/TensorSpec.cpp b/contrib/llvm-project/llvm/lib/Analysis/TensorSpec.cpp
new file mode 100644
index 000000000000..8dd1a054af88
--- /dev/null
+++ b/contrib/llvm-project/llvm/lib/Analysis/TensorSpec.cpp
@@ -0,0 +1,126 @@
+//===- TensorSpec.cpp - tensor type abstraction ---------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// Implementation file for the abstraction of a tensor type, and JSON loading
+// utils.
+//
+//===----------------------------------------------------------------------===//
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Config/config.h"
+
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Analysis/TensorSpec.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/JSON.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/raw_ostream.h"
+#include <array>
+#include <cassert>
+#include <numeric>
+
+using namespace llvm;
+
+namespace llvm {
+
+#define TFUTILS_GETDATATYPE_IMPL(T, E)                                         \
+  template <> TensorType TensorSpec::getDataType<T>() { return TensorType::E; }
+
+SUPPORTED_TENSOR_TYPES(TFUTILS_GETDATATYPE_IMPL)
+
+#undef TFUTILS_GETDATATYPE_IMPL
+
+static std::array<std::string, static_cast<size_t>(TensorType::Total)>
+    TensorTypeNames{"INVALID",
+#define TFUTILS_GETNAME_IMPL(T, _) #T,
+                    SUPPORTED_TENSOR_TYPES(TFUTILS_GETNAME_IMPL)
+#undef TFUTILS_GETNAME_IMPL
+    };
+
+StringRef toString(TensorType TT) {
+  return TensorTypeNames[static_cast<size_t>(TT)];
+}
+
+void TensorSpec::toJSON(json::OStream &OS) const {
+  OS.object([&]() {
+    OS.attribute("name", name());
+    OS.attribute("type", toString(type()));
+    OS.attribute("port", port());
+    OS.attributeArray("shape", [&]() {
+      for (size_t D : shape())
+        OS.value(static_cast<int64_t>(D));
+    });
+  });
+}
+
+TensorSpec::TensorSpec(const std::string &Name, int Port, TensorType Type,
+                       size_t ElementSize, const std::vector<int64_t> &Shape)
+    : Name(Name), Port(Port), Type(Type), Shape(Shape),
+      ElementCount(std::accumulate(Shape.begin(), Shape.end(), 1,
+                                   std::multiplies<int64_t>())),
+      ElementSize(ElementSize) {}
+
+std::optional<TensorSpec> getTensorSpecFromJSON(LLVMContext &Ctx,
+                                                const json::Value &Value) {
+  auto EmitError =
+      [&](const llvm::Twine &Message) -> std::optional<TensorSpec> {
+    std::string S;
+    llvm::raw_string_ostream OS(S);
+    OS << Value;
+    Ctx.emitError("Unable to parse JSON Value as spec (" + Message + "): " + S);
+    return std::nullopt;
+  };
+  // FIXME: accept a Path as a parameter, and use it for error reporting.
+  json::Path::Root Root("tensor_spec");
+  json::ObjectMapper Mapper(Value, Root);
+  if (!Mapper)
+    return EmitError("Value is not a dict");
+
+  std::string TensorName;
+  int TensorPort = -1;
+  std::string TensorType;
+  std::vector<int64_t> TensorShape;
+
+  if (!Mapper.map<std::string>("name", TensorName))
+    return EmitError("'name' property not present or not a string");
+  if (!Mapper.map<std::string>("type", TensorType))
+    return EmitError("'type' property not present or not a string");
+  if (!Mapper.map<int>("port", TensorPort))
+    return EmitError("'port' property not present or not an int");
+  if (!Mapper.map<std::vector<int64_t>>("shape", TensorShape))
+    return EmitError("'shape' property not present or not an int array");
+
+#define PARSE_TYPE(T, E)                                                       \
+  if (TensorType == #T)                                                        \
+    return TensorSpec::createSpec<T>(TensorName, TensorShape, TensorPort);
+  SUPPORTED_TENSOR_TYPES(PARSE_TYPE)
+#undef PARSE_TYPE
+  return std::nullopt;
+}
+
+std::string tensorValueToString(const char *Buffer, const TensorSpec &Spec) {
+  switch (Spec.type()) {
+#define _IMR_DBG_PRINTER(T, N)                                                 \
+  case TensorType::N: {                                                        \
+    const T *TypedBuff = reinterpret_cast<const T *>(Buffer);                  \
+    auto R = llvm::make_range(TypedBuff, TypedBuff + Spec.getElementCount());  \
+    return llvm::join(                                                         \
+        llvm::map_range(R, [](T V) { return std::to_string(V); }), ",");       \
+  }
+    SUPPORTED_TENSOR_TYPES(_IMR_DBG_PRINTER)
+#undef _IMR_DBG_PRINTER
+  case TensorType::Total:
+  case TensorType::Invalid:
+    llvm_unreachable("invalid tensor type");
+  }
+  // To appease warnings about not all control paths returning a value.
+  return "";
+}
+
+} // namespace llvm