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fc07484cd4
Summary: We can use the template parameter `IsPostDom` to pick an appropriate SmallVector size to store DomTree roots for dominators and postdominators. Before, the code would always allocate memory with `std::vector`. Reviewers: dberlin, davide, sanjoy, grosser Reviewed By: grosser Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D35636 llvm-svn: 309148
87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
//=- llvm/CodeGen/MachineDominators.h ----------------------------*- C++ -*-==//
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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 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_MACHINEPOSTDOMINATORS_H
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#define LLVM_CODEGEN_MACHINEPOSTDOMINATORS_H
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#include "llvm/CodeGen/MachineDominators.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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namespace llvm {
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///
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/// PostDominatorTree Class - Concrete subclass of DominatorTree that is used
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/// to compute the post-dominator tree.
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///
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struct MachinePostDominatorTree : public MachineFunctionPass {
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private:
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PostDomTreeBase<MachineBasicBlock> *DT;
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public:
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static char ID;
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MachinePostDominatorTree();
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~MachinePostDominatorTree() override;
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FunctionPass *createMachinePostDominatorTreePass();
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const SmallVectorImpl<MachineBasicBlock *> &getRoots() const {
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return DT->getRoots();
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}
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MachineDomTreeNode *getRootNode() const {
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return DT->getRootNode();
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}
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MachineDomTreeNode *operator[](MachineBasicBlock *BB) const {
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return DT->getNode(BB);
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}
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MachineDomTreeNode *getNode(MachineBasicBlock *BB) const {
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return DT->getNode(BB);
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}
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bool dominates(const MachineDomTreeNode *A,
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const MachineDomTreeNode *B) const {
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return DT->dominates(A, B);
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}
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bool dominates(const MachineBasicBlock *A, const MachineBasicBlock *B) const {
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return DT->dominates(A, B);
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}
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bool properlyDominates(const MachineDomTreeNode *A,
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const MachineDomTreeNode *B) const {
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return DT->properlyDominates(A, B);
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}
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bool properlyDominates(const MachineBasicBlock *A,
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const MachineBasicBlock *B) const {
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return DT->properlyDominates(A, B);
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}
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MachineBasicBlock *findNearestCommonDominator(MachineBasicBlock *A,
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MachineBasicBlock *B) {
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return DT->findNearestCommonDominator(A, B);
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}
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bool runOnMachineFunction(MachineFunction &MF) override;
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void getAnalysisUsage(AnalysisUsage &AU) const override;
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void print(llvm::raw_ostream &OS, const Module *M = nullptr) const override;
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};
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} //end of namespace llvm
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#endif
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