//===-- MachineFunctionAnalysis.cpp ---------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file contains the definitions of the MachineFunctionAnalysis members. // //===----------------------------------------------------------------------===// #include "llvm/CodeGen/MachineFunctionAnalysis.h" #include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineModuleInfo.h" using namespace llvm; // Register this pass with PassInfo directly to avoid having to define // a default constructor. static PassInfo X("Machine Function Analysis", "machine-function-analysis", intptr_t(&MachineFunctionAnalysis::ID), 0, /*CFGOnly=*/false, /*is_analysis=*/true); char MachineFunctionAnalysis::ID = 0; MachineFunctionAnalysis::MachineFunctionAnalysis(const TargetMachine &tm, CodeGenOpt::Level OL) : FunctionPass(&ID), TM(tm), OptLevel(OL), MF(0) { } MachineFunctionAnalysis::~MachineFunctionAnalysis() { releaseMemory(); assert(!MF && "MachineFunctionAnalysis left initialized!"); } void MachineFunctionAnalysis::getAnalysisUsage(AnalysisUsage &AU) const { AU.setPreservesAll(); AU.addRequired<MachineModuleInfo>(); } bool MachineFunctionAnalysis::doInitialization(Module &M) { MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>(); assert(MMI && "MMI not around yet??"); MMI->setModule(&M); NextFnNum = 0; return false; } bool MachineFunctionAnalysis::runOnFunction(Function &F) { assert(!MF && "MachineFunctionAnalysis already initialized!"); MF = new MachineFunction(&F, TM, NextFnNum++, getAnalysis<MachineModuleInfo>()); return false; } void MachineFunctionAnalysis::releaseMemory() { delete MF; MF = 0; }