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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206242 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
//===-- lib/MC/MCFunction.cpp -----------------------------------*- 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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#include "llvm/MC/MCFunction.h"
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#include "llvm/MC/MCAtom.h"
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#include "llvm/MC/MCModule.h"
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#include <algorithm>
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using namespace llvm;
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// MCFunction
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MCFunction::MCFunction(StringRef Name, MCModule *Parent)
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: Name(Name), ParentModule(Parent)
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{}
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MCBasicBlock &MCFunction::createBlock(const MCTextAtom &TA) {
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std::unique_ptr<MCBasicBlock> MCBB(new MCBasicBlock(TA, this));
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Blocks.push_back(std::move(MCBB));
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return *Blocks.back();
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}
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MCBasicBlock *MCFunction::find(uint64_t StartAddr) {
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for (const_iterator I = begin(), E = end(); I != E; ++I)
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if ((*I)->getInsts()->getBeginAddr() == StartAddr)
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return I->get();
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return nullptr;
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}
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const MCBasicBlock *MCFunction::find(uint64_t StartAddr) const {
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return const_cast<MCFunction *>(this)->find(StartAddr);
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}
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// MCBasicBlock
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MCBasicBlock::MCBasicBlock(const MCTextAtom &Insts, MCFunction *Parent)
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: Insts(&Insts), Parent(Parent) {
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getParent()->getParent()->trackBBForAtom(&Insts, this);
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}
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void MCBasicBlock::addSuccessor(const MCBasicBlock *MCBB) {
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if (!isSuccessor(MCBB))
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Successors.push_back(MCBB);
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}
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bool MCBasicBlock::isSuccessor(const MCBasicBlock *MCBB) const {
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return std::find(Successors.begin(), Successors.end(),
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MCBB) != Successors.end();
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}
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void MCBasicBlock::addPredecessor(const MCBasicBlock *MCBB) {
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if (!isPredecessor(MCBB))
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Predecessors.push_back(MCBB);
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}
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bool MCBasicBlock::isPredecessor(const MCBasicBlock *MCBB) const {
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return std::find(Predecessors.begin(), Predecessors.end(),
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MCBB) != Predecessors.end();
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}
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void MCBasicBlock::splitBasicBlock(MCBasicBlock *SplitBB) {
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assert(Insts->getEndAddr() + 1 == SplitBB->Insts->getBeginAddr() &&
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"Splitting unrelated basic blocks!");
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SplitBB->addPredecessor(this);
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assert(SplitBB->Successors.empty() &&
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"Split basic block shouldn't already have successors!");
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SplitBB->Successors = Successors;
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Successors.clear();
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addSuccessor(SplitBB);
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}
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