2003-10-20 17:52:11 +00:00
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//===--- llvm-as.cpp - The low-level LLVM assembler -----------------------===//
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2005-04-22 00:00:37 +00:00
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//
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2003-10-20 17:47:21 +00:00
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// The LLVM Compiler Infrastructure
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//
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2007-12-29 20:44:31 +00:00
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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2005-04-22 00:00:37 +00:00
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//
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2003-10-20 17:47:21 +00:00
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//===----------------------------------------------------------------------===//
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2001-06-06 20:29:01 +00:00
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//
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// This utility may be invoked in the following manner:
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2003-08-28 21:32:57 +00:00
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// llvm-as --help - Output information about command line switches
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2007-05-06 09:29:57 +00:00
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// llvm-as [options] - Read LLVM asm from stdin, write bitcode to stdout
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// llvm-as [options] x.ll - Read LLVM asm from the x.ll file, write bitcode
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2003-08-28 21:32:57 +00:00
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// to the x.bc file.
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2005-04-22 00:00:37 +00:00
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//
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2006-05-29 18:52:52 +00:00
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//===----------------------------------------------------------------------===//
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2001-06-06 20:29:01 +00:00
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2009-07-01 16:58:40 +00:00
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#include "llvm/LLVMContext.h"
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2001-06-06 20:29:01 +00:00
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#include "llvm/Module.h"
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#include "llvm/Assembly/Parser.h"
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2002-08-30 22:54:41 +00:00
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#include "llvm/Analysis/Verifier.h"
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2007-04-22 06:28:58 +00:00
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#include "llvm/Bitcode/ReaderWriter.h"
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2004-09-01 22:55:40 +00:00
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#include "llvm/Support/CommandLine.h"
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2006-12-06 01:18:01 +00:00
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#include "llvm/Support/ManagedStatic.h"
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2009-03-06 05:34:10 +00:00
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#include "llvm/Support/PrettyStackTrace.h"
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2006-11-29 00:19:40 +00:00
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#include "llvm/Support/Streams.h"
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2005-01-02 00:08:46 +00:00
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#include "llvm/Support/SystemUtils.h"
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2009-01-02 07:01:27 +00:00
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#include "llvm/Support/raw_ostream.h"
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2004-05-27 05:41:36 +00:00
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#include "llvm/System/Signals.h"
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2001-11-27 00:03:19 +00:00
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#include <fstream>
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2004-07-04 12:20:55 +00:00
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#include <iostream>
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2002-01-20 22:54:45 +00:00
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#include <memory>
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2003-11-11 22:41:34 +00:00
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using namespace llvm;
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2005-04-22 00:00:37 +00:00
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static cl::opt<std::string>
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2002-07-22 02:10:13 +00:00
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InputFilename(cl::Positional, cl::desc("<input .llvm file>"), cl::init("-"));
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2003-05-22 20:13:16 +00:00
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static cl::opt<std::string>
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2002-07-22 02:10:13 +00:00
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OutputFilename("o", cl::desc("Override output filename"),
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cl::value_desc("filename"));
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static cl::opt<bool>
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Force("f", cl::desc("Overwrite output files"));
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2008-02-21 01:41:25 +00:00
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static cl::opt<bool>
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DisableOutput("disable-output", cl::desc("Disable output"), cl::init(false));
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2002-07-22 02:10:13 +00:00
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static cl::opt<bool>
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DumpAsm("d", cl::desc("Print assembly as parsed"), cl::Hidden);
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2001-06-06 20:29:01 +00:00
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2003-08-18 20:47:13 +00:00
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static cl::opt<bool>
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DisableVerify("disable-verify", cl::Hidden,
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2004-07-11 23:20:54 +00:00
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cl::desc("Do not run verifier on input LLVM (dangerous!)"));
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2003-08-18 20:47:13 +00:00
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2001-06-06 20:29:01 +00:00
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int main(int argc, char **argv) {
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2009-03-06 05:34:10 +00:00
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// Print a stack trace if we signal out.
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2004-08-29 19:28:55 +00:00
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sys::PrintStackTraceOnErrorSignal();
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2009-03-06 05:34:10 +00:00
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PrettyStackTraceProgram X(argc, argv);
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2009-07-01 16:58:40 +00:00
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LLVMContext Context;
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2009-03-06 05:34:10 +00:00
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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cl::ParseCommandLineOptions(argc, argv, "llvm .ll -> .bc assembler\n");
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2001-06-06 20:29:01 +00:00
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2004-12-30 05:36:08 +00:00
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int exitCode = 0;
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2002-06-25 21:43:28 +00:00
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std::ostream *Out = 0;
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2001-06-06 20:29:01 +00:00
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try {
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// Parse the file now...
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2006-08-18 08:43:06 +00:00
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ParseError Err;
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2009-07-01 16:58:40 +00:00
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std::auto_ptr<Module> M(ParseAssemblyFile(InputFilename, Err, &Context));
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2002-04-07 22:34:19 +00:00
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if (M.get() == 0) {
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2009-01-02 07:01:27 +00:00
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Err.PrintError(argv[0], errs());
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2001-06-06 20:29:01 +00:00
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return 1;
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}
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2002-08-30 22:54:41 +00:00
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2006-07-06 18:02:27 +00:00
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if (!DisableVerify) {
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std::string Err;
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if (verifyModule(*M.get(), ReturnStatusAction, &Err)) {
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2006-12-07 01:30:32 +00:00
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cerr << argv[0]
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<< ": assembly parsed, but does not verify as correct!\n";
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cerr << Err;
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2006-07-06 18:02:27 +00:00
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return 1;
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}
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2002-08-30 22:54:41 +00:00
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}
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2005-04-22 00:00:37 +00:00
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2006-12-07 01:30:32 +00:00
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if (DumpAsm) cerr << "Here's the assembly:\n" << *M.get();
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2001-07-23 02:35:57 +00:00
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2001-07-23 19:27:24 +00:00
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if (OutputFilename != "") { // Specified an output filename?
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2003-05-31 21:47:16 +00:00
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if (OutputFilename != "-") { // Not stdout?
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if (!Force && std::ifstream(OutputFilename.c_str())) {
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// If force is not specified, make sure not to overwrite a file!
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2006-12-07 01:30:32 +00:00
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cerr << argv[0] << ": error opening '" << OutputFilename
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<< "': file exists!\n"
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<< "Use -f command line argument to force output\n";
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2003-05-31 21:47:16 +00:00
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return 1;
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}
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2005-04-22 00:00:37 +00:00
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Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
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2005-01-22 17:36:17 +00:00
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std::ios::trunc | std::ios::binary);
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2003-05-31 21:47:16 +00:00
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} else { // Specified stdout
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2005-01-22 17:36:17 +00:00
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// FIXME: cout is not binary!
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Out = &std::cout;
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2002-01-20 22:54:45 +00:00
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}
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2001-07-23 02:35:57 +00:00
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} else {
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2001-07-23 19:27:24 +00:00
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if (InputFilename == "-") {
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2005-01-22 17:36:17 +00:00
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OutputFilename = "-";
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Out = &std::cout;
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2001-07-23 02:35:57 +00:00
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} else {
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2005-01-22 17:36:17 +00:00
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std::string IFN = InputFilename;
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int Len = IFN.length();
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if (IFN[Len-3] == '.' && IFN[Len-2] == 'l' && IFN[Len-1] == 'l') {
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// Source ends in .ll
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OutputFilename = std::string(IFN.begin(), IFN.end()-3);
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2001-07-23 02:35:57 +00:00
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} else {
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2005-01-22 17:36:17 +00:00
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OutputFilename = IFN; // Append a .bc to it
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}
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OutputFilename += ".bc";
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2002-01-20 22:54:45 +00:00
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2002-01-22 21:07:24 +00:00
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if (!Force && std::ifstream(OutputFilename.c_str())) {
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2002-01-20 22:54:45 +00:00
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// If force is not specified, make sure not to overwrite a file!
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2006-12-07 01:30:32 +00:00
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cerr << argv[0] << ": error opening '" << OutputFilename
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<< "': file exists!\n"
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<< "Use -f command line argument to force output\n";
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2002-01-20 22:54:45 +00:00
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return 1;
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}
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2005-04-22 00:00:37 +00:00
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Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
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2005-01-22 17:36:17 +00:00
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std::ios::trunc | std::ios::binary);
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2003-10-10 17:56:49 +00:00
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// Make sure that the Out file gets unlinked from the disk if we get a
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2002-04-18 19:55:25 +00:00
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// SIGINT
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2004-11-14 22:30:54 +00:00
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sys::RemoveFileOnSignal(sys::Path(OutputFilename));
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2001-07-23 02:35:57 +00:00
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}
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2002-01-20 22:54:45 +00:00
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}
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2005-04-22 00:00:37 +00:00
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2002-01-20 22:54:45 +00:00
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if (!Out->good()) {
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2006-12-07 01:30:32 +00:00
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cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
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2002-01-20 22:54:45 +00:00
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return 1;
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2001-06-06 20:29:01 +00:00
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}
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2005-04-22 00:00:37 +00:00
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2008-02-21 01:41:25 +00:00
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if (!DisableOutput)
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if (Force || !CheckBitcodeOutputToConsole(Out,true))
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WriteBitcodeToFile(M.get(), *Out);
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2004-12-30 05:36:08 +00:00
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} catch (const std::string& msg) {
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2006-12-07 01:30:32 +00:00
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cerr << argv[0] << ": " << msg << "\n";
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2004-12-30 05:36:08 +00:00
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exitCode = 1;
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} catch (...) {
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2006-12-07 01:30:32 +00:00
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cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
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2004-12-30 05:36:08 +00:00
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exitCode = 1;
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2001-06-06 20:29:01 +00:00
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}
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2002-06-25 21:43:28 +00:00
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if (Out != &std::cout) delete Out;
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2004-12-30 05:36:08 +00:00
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return exitCode;
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2001-06-06 20:29:01 +00:00
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}
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