88fb36a9c3
This is a rather crude heuristic, but enough to recover performance without causing excessive inlining when calling functions many times. Also remove an outdated comment and a TF_RET_CHECK that's doesn't hold when not inlining everything. PiperOrigin-RevId: 291180120 Change-Id: I50434076891b69f92ded0cdbd40039a4f5858541
53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
/* 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.
|
|
==============================================================================*/
|
|
|
|
#ifndef TENSORFLOW_COMPILER_XLA_SERVICE_CALL_INLINER_H_
|
|
#define TENSORFLOW_COMPILER_XLA_SERVICE_CALL_INLINER_H_
|
|
|
|
#include <deque>
|
|
|
|
#include "tensorflow/compiler/xla/service/hlo_pass_interface.h"
|
|
#include "tensorflow/compiler/xla/statusor.h"
|
|
|
|
namespace xla {
|
|
|
|
// For every kCall operation in the main computation, we inline the body of the
|
|
// called function, and proceed recursively.
|
|
class CallInliner : public HloModulePass {
|
|
public:
|
|
using InlinedInstructionMap =
|
|
std::unordered_map<HloInstruction*, HloInstruction*>;
|
|
|
|
// Inlines one call instruction. Returns a mapping from the original
|
|
// instructions to their inlined versions.
|
|
static StatusOr<InlinedInstructionMap> Inline(HloInstruction* call);
|
|
|
|
// If single_call_site is true, only functions with a single call site will be
|
|
// inlined.
|
|
explicit CallInliner(bool single_call_site = false)
|
|
: single_call_site_(single_call_site) {}
|
|
~CallInliner() override = default;
|
|
absl::string_view name() const override { return "CallInliner"; }
|
|
|
|
StatusOr<bool> Run(HloModule* module) override;
|
|
|
|
private:
|
|
bool single_call_site_;
|
|
};
|
|
|
|
} // namespace xla
|
|
|
|
#endif // TENSORFLOW_COMPILER_XLA_SERVICE_CALL_INLINER_H_
|