61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
//===-- MachineFunctionAnalysis.cpp ---------------------------------------===//
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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 contains the definitions of the MachineFunctionAnalysis members.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineFunctionAnalysis.h"
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#include "llvm/CodeGen/GCMetadata.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/CodeGen/MachineFunctionInitializer.h"
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using namespace llvm;
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char MachineFunctionAnalysis::ID = 0;
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MachineFunctionAnalysis::MachineFunctionAnalysis(
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const TargetMachine &tm, MachineFunctionInitializer *MFInitializer)
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: FunctionPass(ID), TM(tm), MF(nullptr), MFInitializer(MFInitializer) {
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initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
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}
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MachineFunctionAnalysis::~MachineFunctionAnalysis() {
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releaseMemory();
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assert(!MF && "MachineFunctionAnalysis left initialized!");
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}
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void MachineFunctionAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
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AU.setPreservesAll();
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AU.addRequired<MachineModuleInfo>();
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}
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bool MachineFunctionAnalysis::doInitialization(Module &M) {
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MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>();
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assert(MMI && "MMI not around yet??");
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MMI->setModule(&M);
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NextFnNum = 0;
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return false;
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}
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bool MachineFunctionAnalysis::runOnFunction(Function &F) {
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assert(!MF && "MachineFunctionAnalysis already initialized!");
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MF = new MachineFunction(&F, TM, NextFnNum++,
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getAnalysis<MachineModuleInfo>());
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if (MFInitializer)
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MFInitializer->initializeMachineFunction(*MF);
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return false;
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}
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void MachineFunctionAnalysis::releaseMemory() {
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delete MF;
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MF = nullptr;
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}
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