1 files changed, 53 insertions, 0 deletions
diff --git a/tensorflow/compiler/xla/service/hlo_module_config.cc b/tensorflow/compiler/xla/service/hlo_module_config.cc
new file mode 100644
index 0000000000..033b129e34
--- /dev/null
+++ b/tensorflow/compiler/xla/service/hlo_module_config.cc
@@ -0,0 +1,53 @@
+/* Copyright 2017 The TensorFlow Authors. 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 "tensorflow/compiler/xla/service/hlo_module_config.h"
+
+#include <vector>
+
+#include "tensorflow/compiler/xla/shape_layout.h"
+#include "tensorflow/compiler/xla/types.h"
+#include "tensorflow/core/lib/strings/str_util.h"
+#include "tensorflow/core/lib/strings/strcat.h"
+
+namespace xla {
+
+HloModuleConfig::HloModuleConfig(const ProgramShape& program_shape)
+    : entry_computation_layout_(program_shape) {}
+
+string HloModuleConfig::compilation_cache_key() const {
+  string key = tensorflow::strings::StrCat("profiling=", hlo_profiling_enabled_,
+                                           "::", "hybrid=", has_hybrid_result_);
+  tensorflow::strings::StrAppend(&key, "::(");
+  std::vector<string> params;
+  for (const ShapeLayout& param_layout :
+       entry_computation_layout_.parameter_layouts()) {
+    params.push_back(param_layout.shape().SerializeAsString());
+  }
+  tensorflow::strings::StrAppend(
+      &key, tensorflow::str_util::Join(params, ", "), ") => ",
+      entry_computation_layout_.result_shape().SerializeAsString());
+  if (seed_ != 0) {
+    // TODO(b/32083678): force recompilation to reset global state.
+    static int counter = 0;
+    tensorflow::strings::StrAppend(&key, "forcing recompile ", counter++);
+  }
+  if (replica_count() != 1) {
+    tensorflow::strings::StrAppend(&key, "::replica_count=", replica_count());
+  }
+  return key;
+}
+
+}  // namespace xla