6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
//===- SplitModule.h - Split a module into partitions -----------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the function llvm::SplitModule, which splits a module
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// into multiple linkable partitions. It can be used to implement parallel code
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// generation for link-time optimization.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_SPLITMODULE_H
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#define LLVM_TRANSFORMS_UTILS_SPLITMODULE_H
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#include "llvm/ADT/STLFunctionalExtras.h"
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#include <memory>
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namespace llvm {
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class Module;
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/// Splits the module M into N linkable partitions. The function ModuleCallback
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/// is called N times passing each individual partition as the MPart argument.
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/// PreserveLocals: Split without externalizing locals.
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/// RoundRobin: Use round-robin distribution of functions to modules instead
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/// of the default name-hash-based one.
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///
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/// FIXME: This function does not deal with the somewhat subtle symbol
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/// visibility issues around module splitting, including (but not limited to):
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///
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/// - Internal symbols should not collide with symbols defined outside the
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/// module.
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/// - Internal symbols defined in module-level inline asm should be visible to
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/// each partition.
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void SplitModule(
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Module &M, unsigned N,
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function_ref<void(std::unique_ptr<Module> MPart)> ModuleCallback,
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bool PreserveLocals = false, bool RoundRobin = false);
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} // end namespace llvm
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#endif // LLVM_TRANSFORMS_UTILS_SPLITMODULE_H
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