1 //===-- MachineFunctionAnalysis.cpp ---------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the definitions of the MachineFunctionAnalysis members.
12 //===----------------------------------------------------------------------===//
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 #include "llvm/CodeGen/MachineFunctionInitializer.h"
21 char MachineFunctionAnalysis::ID = 0;
23 MachineFunctionAnalysis::MachineFunctionAnalysis(
24 const TargetMachine &tm, MachineFunctionInitializer *MFInitializer)
25 : FunctionPass(ID), TM(tm), MF(nullptr), MFInitializer(MFInitializer) {
26 initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
29 MachineFunctionAnalysis::~MachineFunctionAnalysis() {
31 assert(!MF && "MachineFunctionAnalysis left initialized!");
34 void MachineFunctionAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
36 AU.addRequired<MachineModuleInfo>();
39 bool MachineFunctionAnalysis::doInitialization(Module &M) {
40 MachineModuleInfo *MMI = getAnalysisIfAvailable<MachineModuleInfo>();
41 assert(MMI && "MMI not around yet??");
48 bool MachineFunctionAnalysis::runOnFunction(Function &F) {
49 assert(!MF && "MachineFunctionAnalysis already initialized!");
50 MF = new MachineFunction(&F, TM, NextFnNum++,
51 getAnalysis<MachineModuleInfo>());
53 MFInitializer->initializeMachineFunction(*MF);
57 void MachineFunctionAnalysis::releaseMemory() {