43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
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/* Copyright 2019 The OpenXLA Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef XLA_SERVICE_RNG_EXPANDER_H_
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#define XLA_SERVICE_RNG_EXPANDER_H_
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#include "xla/service/op_expander_pass.h"
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namespace xla {
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class RngExpander : public OpExpanderPass {
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public:
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absl::string_view name() const override { return "rng-expander"; }
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protected:
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bool InstructionMatchesPattern(HloInstruction* instruction) override;
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StatusOr<HloInstruction*> ExpandInstruction(HloInstruction* rng) override;
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private:
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// Cache RNG computations based on the distribution, output shape and shapes
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// of the first and second operand.
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absl::flat_hash_map<std::tuple<RandomDistribution, Shape, Shape, Shape>,
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HloComputation*>
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expanded_rng_instructions_;
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};
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} // namespace xla
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#endif // XLA_SERVICE_RNG_EXPANDER_H_
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