1 //===-- MachineFunctionAnalysis.cpp ---------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file contains the definitions of the MachineFunctionAnalysis members. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/CodeGen/MachineFunctionAnalysis.h" 15 #include "llvm/CodeGen/GCMetadata.h" 16 #include "llvm/CodeGen/MachineFunction.h" 17 #include "llvm/CodeGen/MachineModuleInfo.h" 18 using namespace llvm; 19 20 char MachineFunctionAnalysis::ID = 0; 21 22 MachineFunctionAnalysis::MachineFunctionAnalysis(const TargetMachine &tm, 23 CodeGenOpt::Level OL) : 24 FunctionPass(ID), TM(tm), OptLevel(OL), MF(0) { 25 initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry()); 26 } 27 28 MachineFunctionAnalysis::~MachineFunctionAnalysis() { 29 releaseMemory(); 30 assert(!MF && "MachineFunctionAnalysis left initialized!"); 31 } 32 33 void MachineFunctionAnalysis::getAnalysisUsage(AnalysisUsage &AU) const { 34 AU.setPreservesAll(); 35 AU.addRequired<MachineModuleInfo>(); 36 } 37 38 bool MachineFunctionAnalysis::doInitialization(Module &M) { 39 MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>(); 40 assert(MMI && "MMI not around yet??"); 41 MMI->setModule(&M); 42 NextFnNum = 0; 43 return false; 44 } 45 46 47 bool MachineFunctionAnalysis::runOnFunction(Function &F) { 48 assert(!MF && "MachineFunctionAnalysis already initialized!"); 49 MF = new MachineFunction(&F, TM, NextFnNum++, 50 getAnalysis<MachineModuleInfo>(), 51 getAnalysisIfAvailable<GCModuleInfo>()); 52 return false; 53 } 54 55 void MachineFunctionAnalysis::releaseMemory() { 56 delete MF; 57 MF = 0; 58 } 59
