forked from OSchip/llvm-project
63 lines
2.0 KiB
C++
63 lines
2.0 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/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;
|
|
}
|