43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
/* Copyright 2019 The OpenXLA Authors.
|
|
|
|
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 XLA_SERVICE_RNG_EXPANDER_H_
|
|
#define XLA_SERVICE_RNG_EXPANDER_H_
|
|
|
|
#include "xla/service/op_expander_pass.h"
|
|
|
|
namespace xla {
|
|
|
|
class RngExpander : public OpExpanderPass {
|
|
public:
|
|
absl::string_view name() const override { return "rng-expander"; }
|
|
|
|
protected:
|
|
bool InstructionMatchesPattern(HloInstruction* instruction) override;
|
|
|
|
StatusOr<HloInstruction*> ExpandInstruction(HloInstruction* rng) override;
|
|
|
|
private:
|
|
// Cache RNG computations based on the distribution, output shape and shapes
|
|
// of the first and second operand.
|
|
absl::flat_hash_map<std::tuple<RandomDistribution, Shape, Shape, Shape>,
|
|
HloComputation*>
|
|
expanded_rng_instructions_;
|
|
};
|
|
|
|
} // namespace xla
|
|
|
|
#endif // XLA_SERVICE_RNG_EXPANDER_H_
|