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llvm-mirror/lib/CodeGen/MachineFunctionAnalysis.cpp
Evan Cheng 2b239cbcf6 Sink codegen optimization level into MCCodeGenInfo along side relocation model
and code model. This eliminates the need to pass OptLevel flag all over the
place and makes it possible for any codegen pass to use this information.

llvm-svn: 144788
2011-11-16 08:38:26 +00:00

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1.8 KiB
C++

//===-- 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/GCMetadata.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
using namespace llvm;
char MachineFunctionAnalysis::ID = 0;
MachineFunctionAnalysis::MachineFunctionAnalysis(const TargetMachine &tm) :
FunctionPass(ID), TM(tm), MF(0) {
initializeMachineModuleInfoPass(*PassRegistry::getPassRegistry());
}
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>(),
getAnalysisIfAvailable<GCModuleInfo>());
return false;
}
void MachineFunctionAnalysis::releaseMemory() {
delete MF;
MF = 0;
}