| 1 | //===- MachineDominanceFrontier.cpp ---------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "llvm/CodeGen/MachineDominanceFrontier.h" |
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| 10 | #include "llvm/CodeGen/MachineDominators.h" |
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| 11 | #include "llvm/CodeGen/Passes.h" |
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| 12 | #include "llvm/InitializePasses.h" |
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| 13 | #include "llvm/Pass.h" |
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| 14 | #include "llvm/PassRegistry.h" |
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| 15 | |
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| 16 | using namespace llvm; |
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| 17 | |
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| 18 | namespace llvm { |
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| 19 | template class DominanceFrontierBase<MachineBasicBlock, false>; |
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| 20 | template class DominanceFrontierBase<MachineBasicBlock, true>; |
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| 21 | template class ForwardDominanceFrontierBase<MachineBasicBlock>; |
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| 22 | } |
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| 23 | |
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| 24 | |
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| 25 | char MachineDominanceFrontier::ID = 0; |
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| 26 | |
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| 27 | INITIALIZE_PASS_BEGIN(MachineDominanceFrontier, "machine-domfrontier" , |
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| 28 | "Machine Dominance Frontier Construction" , true, true) |
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| 29 | INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree) |
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| 30 | INITIALIZE_PASS_END(MachineDominanceFrontier, "machine-domfrontier" , |
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| 31 | "Machine Dominance Frontier Construction" , true, true) |
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| 32 | |
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| 33 | MachineDominanceFrontier::MachineDominanceFrontier() : MachineFunctionPass(ID) { |
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| 34 | initializeMachineDominanceFrontierPass(Registry&: *PassRegistry::getPassRegistry()); |
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| 35 | } |
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| 36 | |
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| 37 | char &llvm::MachineDominanceFrontierID = MachineDominanceFrontier::ID; |
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| 38 | |
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| 39 | bool MachineDominanceFrontier::runOnMachineFunction(MachineFunction &) { |
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| 40 | releaseMemory(); |
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| 41 | Base.analyze(DT&: getAnalysis<MachineDominatorTree>().getBase()); |
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| 42 | return false; |
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| 43 | } |
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| 44 | |
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| 45 | void MachineDominanceFrontier::releaseMemory() { |
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| 46 | Base.releaseMemory(); |
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| 47 | } |
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| 48 | |
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| 49 | void MachineDominanceFrontier::getAnalysisUsage(AnalysisUsage &AU) const { |
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| 50 | AU.setPreservesAll(); |
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| 51 | AU.addRequired<MachineDominatorTree>(); |
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| 52 | MachineFunctionPass::getAnalysisUsage(AU); |
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| 53 | } |
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| 54 | |
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