59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
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/* Copyright 2017 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_CALL_INLINER_H_
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#define XLA_SERVICE_CALL_INLINER_H_
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#include "absl/container/flat_hash_map.h"
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#include "xla/service/hlo_pass_interface.h"
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#include "xla/statusor.h"
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namespace xla {
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// For every kCall operation in the main computation, we inline the body of the
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// called function, and proceed recursively.
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class CallInliner : public HloModulePass {
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public:
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using InlinedInstructionMap =
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absl::flat_hash_map<HloInstruction*, HloInstruction*>;
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// Inlines one call instruction. Returns a mapping from the original
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// instructions to their inlined versions.
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static StatusOr<InlinedInstructionMap> Inline(HloInstruction* call);
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// If single_call_site is true, only functions with a single call site will be
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// inlined.
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// If update_domain is true, the exit domains could be updated for calls which
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// are being inlined if necessary.
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explicit CallInliner(bool single_call_site = false,
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bool update_domain = false)
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: single_call_site_(single_call_site), update_domain_(update_domain) {}
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~CallInliner() override = default;
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absl::string_view name() const override { return "CallInliner"; }
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using HloPassInterface::Run;
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StatusOr<bool> Run(
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HloModule* module,
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const absl::flat_hash_set<absl::string_view>& execution_threads) override;
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private:
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bool single_call_site_;
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bool update_domain_;
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};
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} // namespace xla
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#endif // XLA_SERVICE_CALL_INLINER_H_
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