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 FunctionPass(ID), TM(tm), MF(0) { 24 initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry()); 25 } 26 27 MachineFunctionAnalysis::~MachineFunctionAnalysis() { 28 releaseMemory(); 29 assert(!MF && "MachineFunctionAnalysis left initialized!"); 30 } 31 32 void MachineFunctionAnalysis::getAnalysisUsage(AnalysisUsage &AU) const { 33 AU.setPreservesAll(); 34 AU.addRequired<MachineModuleInfo>(); 35 } 36 37 bool MachineFunctionAnalysis::doInitialization(Module &M) { 38 MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>(); 39 assert(MMI && "MMI not around yet??"); 40 MMI->setModule(&M); 41 NextFnNum = 0; 42 return false; 43 } 44 45 46 bool MachineFunctionAnalysis::runOnFunction(Function &F) { 47 assert(!MF && "MachineFunctionAnalysis already initialized!"); 48 MF = new MachineFunction(&F, TM, NextFnNum++, 49 getAnalysis<MachineModuleInfo>(), 50 getAnalysisIfAvailable<GCModuleInfo>()); 51 return false; 52 } 53 54 void MachineFunctionAnalysis::releaseMemory() { 55 delete MF; 56 MF = 0; 57 } 58
