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//===- LTOBugPoint.cpp - Top-Level LTO BugPoint class ---------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class contains all of the shared state and information that is used by
// the LTO BugPoint tool to track down bit code files that cause errors.
//
//===----------------------------------------------------------------------===//
#include "LTOBugPoint.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/System/Path.h"
#include <iostream>
/// LTOBugPoint -- Constructor. Popuate list of linker options and
/// list of linker input files.
LTOBugPoint::LTOBugPoint(std::istream &args, std::istream &ins) {
// Read linker options. Order is important here.
std::string option;
while (getline(args, option))
LinkerOptions.push_back(option);
// Read linker input files. Order is important here.
std::string inFile;
while(getline(ins, inFile))
LinkerInputFiles.push_back(inFile);
}
/// findTroubleMakers - Find minimum set of input files that causes error
/// identified by the script.
bool
LTOBugPoint::findTroubleMakers(llvm::SmallVector<std::string, 4> &TroubleMakers,
std::string &Script) {
// First, build native object files set.
bool bitcodeFileSeen = false;
for(llvm::SmallVector<std::string, 16>::iterator I = LinkerInputFiles.begin(),
E = LinkerInputFiles.end(); I != E; ++I) {
std::string &path = *I;
if (llvm::sys::Path(path.c_str()).isBitcodeFile())
bitcodeFileSeen = true;
}
if (!bitcodeFileSeen) {
std::cerr << "lto-bugpoint: Error: Unable to help!";
std::cerr << " Need at least one input file that contains llvm bitcode\n";
return false;
}
return true;
}
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