6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
//===- llvm/CodeGen/MachineDomTreeUpdater.h -----------------------*- 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 exposes interfaces to post dominance information for
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// target-specific code.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CODEGEN_MACHINEDOMTREEUPDATER_H
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#define LLVM_CODEGEN_MACHINEDOMTREEUPDATER_H
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#include "llvm/Analysis/GenericDomTreeUpdater.h"
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#include "llvm/CodeGen/MachineDominators.h"
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namespace llvm {
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class MachinePostDominatorTree;
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class MachineDomTreeUpdater
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: public GenericDomTreeUpdater<MachineDomTreeUpdater, MachineDominatorTree,
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MachinePostDominatorTree> {
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friend GenericDomTreeUpdater<MachineDomTreeUpdater, MachineDominatorTree,
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MachinePostDominatorTree>;
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public:
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using Base =
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GenericDomTreeUpdater<MachineDomTreeUpdater, MachineDominatorTree,
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MachinePostDominatorTree>;
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using Base::Base;
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~MachineDomTreeUpdater() { flush(); }
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///@{
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/// \name Mutation APIs
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///
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/// Delete DelBB. DelBB will be removed from its Parent and
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/// erased from available trees if it exists and finally get deleted.
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/// Under Eager UpdateStrategy, DelBB will be processed immediately.
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/// Under Lazy UpdateStrategy, DelBB will be queued until a flush event and
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/// all available trees are up-to-date. Assert if any instruction of DelBB is
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/// modified while awaiting deletion. When both DT and PDT are nullptrs, DelBB
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/// will be queued until flush() is called.
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void deleteBB(MachineBasicBlock *DelBB);
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///@}
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private:
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/// First remove all the instructions of DelBB and then make sure DelBB has a
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/// valid terminator instruction which is necessary to have when DelBB still
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/// has to be inside of its parent Function while awaiting deletion under Lazy
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/// UpdateStrategy to prevent other routines from asserting the state of the
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/// IR is inconsistent. Assert if DelBB is nullptr or has predecessors.
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void validateDeleteBB(MachineBasicBlock *DelBB);
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/// Returns true if at least one MachineBasicBlock is deleted.
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bool forceFlushDeletedBB();
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};
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extern template class GenericDomTreeUpdater<
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MachineDomTreeUpdater, MachineDominatorTree, MachinePostDominatorTree>;
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extern template void
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GenericDomTreeUpdater<MachineDomTreeUpdater, MachineDominatorTree,
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MachinePostDominatorTree>::recalculate(MachineFunction
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&MF);
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} // namespace llvm
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#endif // LLVM_CODEGEN_MACHINEDOMTREEUPDATER_H
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