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must be called in the pass's constructor. This function uses static dependency declarations to recursively initialize the pass's dependencies. Clients that only create passes through the createFooPass() APIs will require no changes. Clients that want to use the CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h before parsing commandline arguments. I have tested this with all standard configurations of clang and llvm-gcc on Darwin. It is possible that there are problems with the static dependencies that will only be visible with non-standard options. If you encounter any crash in pass registration/creation, please send the testcase to me directly. llvm-svn: 116820
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
//===- MachineDominators.cpp - Machine Dominator Calculation --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements simple dominator construction algorithms for finding
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// forward dominators on machine functions.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineDominators.h"
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#include "llvm/CodeGen/Passes.h"
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using namespace llvm;
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namespace llvm {
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TEMPLATE_INSTANTIATION(class DomTreeNodeBase<MachineBasicBlock>);
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TEMPLATE_INSTANTIATION(class DominatorTreeBase<MachineBasicBlock>);
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}
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char MachineDominatorTree::ID = 0;
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INITIALIZE_PASS(MachineDominatorTree, "machinedomtree",
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"MachineDominator Tree Construction", true, true)
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char &llvm::MachineDominatorsID = MachineDominatorTree::ID;
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void MachineDominatorTree::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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MachineFunctionPass::getAnalysisUsage(AU);
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}
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bool MachineDominatorTree::runOnMachineFunction(MachineFunction &F) {
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DT->recalculate(F);
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return false;
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}
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MachineDominatorTree::MachineDominatorTree()
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: MachineFunctionPass(ID) {
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initializeMachineDominatorTreePass(*PassRegistry::getPassRegistry());
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DT = new DominatorTreeBase<MachineBasicBlock>(false);
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}
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MachineDominatorTree::~MachineDominatorTree() {
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delete DT;
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}
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void MachineDominatorTree::releaseMemory() {
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DT->releaseMemory();
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}
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void MachineDominatorTree::print(raw_ostream &OS, const Module*) const {
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DT->print(OS);
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}
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