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//===-- 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"
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!");
}
bool MachineFunctionAnalysis::runOnFunction(Function &F) {
assert(!MF && "MachineFunctionAnalysis already initialized!");
MF = new MachineFunction(&F, TM);
return false;
}
void MachineFunctionAnalysis::releaseMemory() {
delete MF;
MF = 0;
}
void MachineFunctionAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
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