48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
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/* Copyright 2020 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_COMPARISON_EXPANDER_H_
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#define XLA_SERVICE_COMPARISON_EXPANDER_H_
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#include <utility>
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#include "xla/hlo/ir/hlo_module.h"
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#include "xla/service/hlo_pass_interface.h"
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#include "xla/service/op_expander_pass.h"
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namespace xla {
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// A pass which performs expansion of the comparison operator to support total
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// order comparison of floating point numbers.
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class ComparisonExpander : public OpExpanderPass {
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public:
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explicit ComparisonExpander() = default;
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~ComparisonExpander() override = default;
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absl::string_view name() const override { return "comparison-expander"; }
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private:
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// Returns `true` if `instruction` should be expanded by this pass.
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bool InstructionMatchesPattern(HloInstruction* instruction) override;
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// Returns a replacement for `instruction`, or nullptr if no replacement is
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// needed (e.g. only the to_apply subcomputation of the instruction was
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// modified).
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StatusOr<HloInstruction*> ExpandInstruction(
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HloInstruction* instruction) override;
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};
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} // namespace xla
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#endif // XLA_SERVICE_COMPARISON_EXPANDER_H_
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