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annotate lib/CodeGen/MachinePostDominators.cpp @ 134:3a76565eade5 LLVM5.0.1

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update 5.0.1
author mir3636
date Sat, 17 Feb 2018 09:57:20 +0900
parents 803732b1fca8
children c2174574ed3a
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1 //===- MachinePostDominators.cpp -Machine Post Dominator Calculation ------===//
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2 //
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3 // The LLVM Compiler Infrastructure
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4 //
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5 // This file is distributed under the University of Illinois Open Source
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6 // License. See LICENSE.TXT for details.
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7 //
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8 //===----------------------------------------------------------------------===//
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9 //
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10 // This file implements simple dominator construction algorithms for finding
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11 // post dominators on machine functions.
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12 //
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13 //===----------------------------------------------------------------------===//
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15 #include "llvm/CodeGen/MachinePostDominators.h"
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16
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17 using namespace llvm;
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18
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19 namespace llvm {
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20 template class DominatorTreeBase<MachineBasicBlock, true>; // PostDomTreeBase
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21 }
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23 char MachinePostDominatorTree::ID = 0;
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24
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25 //declare initializeMachinePostDominatorTreePass
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26 INITIALIZE_PASS(MachinePostDominatorTree, "machinepostdomtree",
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27 "MachinePostDominator Tree Construction", true, true)
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29 MachinePostDominatorTree::MachinePostDominatorTree() : MachineFunctionPass(ID) {
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30 initializeMachinePostDominatorTreePass(*PassRegistry::getPassRegistry());
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31 DT = new PostDomTreeBase<MachineBasicBlock>();
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32 }
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34 FunctionPass *
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35 MachinePostDominatorTree::createMachinePostDominatorTreePass() {
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36 return new MachinePostDominatorTree();
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37 }
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38
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39 bool
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40 MachinePostDominatorTree::runOnMachineFunction(MachineFunction &F) {
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41 DT->recalculate(F);
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42 return false;
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43 }
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45 MachinePostDominatorTree::~MachinePostDominatorTree() {
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46 delete DT;
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47 }
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49 void
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50 MachinePostDominatorTree::getAnalysisUsage(AnalysisUsage &AU) const {
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51 AU.setPreservesAll();
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52 MachineFunctionPass::getAnalysisUsage(AU);
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53 }
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55 void
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56 MachinePostDominatorTree::print(llvm::raw_ostream &OS, const Module *M) const {
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57 DT->print(OS);
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58 }