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// $Id$
//**************************************************************************/
// File:
// LLCOptions.cpp
//
// Purpose:
// Options for the llc compiler.
//
// History:
// 7/15/01 - Vikram Adve - Created
//
//**************************************************************************/
//************************** System Include Files **************************/
#include <iostream.h>
#include <unistd.h>
//*************************** User Include Files ***************************/
#include "llvm/Support/ProgramOptions.h"
#include "llvm/Support/ProgramOption.h"
#include "LLCOptions.h"
//---------------------------------------------------------------------------
// class LLCOptions
//---------------------------------------------------------------------------
/*ctor*/
LLCOptions::LLCOptions (int _argc,
const char* _argv[],
const char* _envp[])
: ProgramOptions(_argc, _argv, _envp)
{
InitializeOptions();
ParseArgs(argc, argv, envp);
CheckParse();
}
/*dtor*/
LLCOptions::~LLCOptions()
{}
//--------------------------------------------------------------------
// Initialize all our compiler options
//--------------------------------------------------------------------
void
LLCOptions::InitializeOptions()
{
Register(new FlagOption(HELP_OPT,
"print usage message",
false /*initValue*/));
Register(new FlagOption(DEBUG_OPT,
"turn on default debugging options",
false /*initValue*/));
Register(new FlagOption(DEBUG_OPT,
"turn off all diagnostic messages",
false /*initValue*/));
Register(new StringOption(OUTFILENAME_OPT,
"output file name",
"" /*initValue*/));
Register(new IntegerValuedOption(DEBUG_INSTR_SELECT_OPT,
"control amount of debugging information for instruction selection",
0 /*initValue*/));
}
void
LLCOptions::ParseExtraArgs()
{
if (argsConsumed != argc-1)
Usage();
// input file name should be the last argument
inputFileName = argv[argc-1];
// output file name may be specified with -o option;
// otherwise create it from the input file name by replace ".ll" with ".o"
const string &outfilenameOpt = StringOptionValue(OUTFILENAME_OPT);
if (outfilenameOpt.length())
{// "-o" option was used
outputFileName = outfilenameOpt;
}
else
{
outputFileName = inputFileName;
unsigned int suffixPos = outputFileName.rfind(".bc");
if (suffixPos >= outputFileName.length())
suffixPos = outputFileName.rfind(".ll");
if (suffixPos >= outputFileName.length())
{
cerr << "Unrecognized suffix in file name " << inputFileName << endl;
Usage();
}
outputFileName.replace(suffixPos, 3, ".o");
}
}
//--------------------------------------------------------------------
// Functions that must be overridden in subclass of ProgramOptions
//--------------------------------------------------------------------
void
LLCOptions::CheckParse()
{}
void
LLCOptions::PrintUsage(ostream& stream) const
{
stream << "\nUSAGE:\n\t" << ProgramName() << " [options] "
<< "llvm-file" << endl << endl;
PrintOptions(stream);
}
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