mirror of
https://github.com/c64scene-ar/llvm-6502.git
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e3c55a52f8
keeps llvm-upgrade a simple "source to source" tool. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36848 91177308-0d34-0410-b5e6-96231b3b80d8
145 lines
4.7 KiB
C++
145 lines
4.7 KiB
C++
//===--- llvm-upgrade.cpp - The LLVM Assembly Upgrader --------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Reid Spencer and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This utility will upgrade LLVM 1.9 Assembly to 2.0 format. It may be
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// invoked as a filter, like this:
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// llvm-1.9/bin/llvm-dis < 1.9.bc | llvm-upgrade | llvm-as > 2.0.bc
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//
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// or, you can directly upgrade, like this:
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// llvm-upgrade -o 2.0.ll < 1.9.ll
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//
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// llvm-upgrade won't overwrite files by default. Use -f to force it to
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// overwrite the output file.
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//
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//===----------------------------------------------------------------------===//
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#include "UpgradeInternals.h"
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#include "llvm/Module.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/Streams.h"
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#include "llvm/Support/SystemUtils.h"
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#include "llvm/System/Signals.h"
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#include <fstream>
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#include <iostream>
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#include <memory>
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using namespace llvm;
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static cl::opt<std::string>
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InputFilename(cl::Positional, cl::desc("<input .llvm file>"), cl::init("-"));
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static cl::opt<std::string>
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OutputFilename("o", cl::desc("Override output filename"),
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cl::value_desc("filename"), cl::init("-"));
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static cl::opt<bool>
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Force("f", cl::desc("Overwrite output files"), cl::init(false));
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static cl::opt<bool>
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AddAttrs("add-attrs", cl::desc("Add function result and argument attributes"),
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cl::init(false));
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static cl::opt<bool>
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Debug("debug-upgrade-yacc", cl::desc("Print debug output from yacc parser"),
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cl::Hidden, cl::init(false));
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int main(int argc, char **argv) {
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llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
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cl::ParseCommandLineOptions(argc, argv, " llvm .ll -> .bc assembler\n");
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sys::PrintStackTraceOnErrorSignal();
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int exitCode = 0;
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std::ostream *Out = 0;
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std::istream *In = 0;
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try {
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if (OutputFilename != "") { // Specified an output filename?
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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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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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return 1;
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}
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Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
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std::ios::trunc);
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} else { // Specified stdout
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Out = &std::cout;
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}
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} else {
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if (InputFilename == "-") {
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OutputFilename = "-";
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Out = &std::cout;
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} else {
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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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} else {
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OutputFilename = IFN; // Append to it
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}
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OutputFilename += ".llu";
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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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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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return 1;
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}
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Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
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std::ios::trunc);
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// Make sure that the Out file gets unlinked from the disk if we get a
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// SIGINT
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sys::RemoveFileOnSignal(sys::Path(OutputFilename));
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}
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}
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if (InputFilename == "-") {
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In = &std::cin;
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InputFilename = "<stdin>";
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} else {
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In = new std::ifstream(InputFilename.c_str());
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}
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if (!Out->good()) {
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cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
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return 1;
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}
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if (!In->good()) {
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cerr << argv[0] << ": error opening " << InputFilename << "!\n";
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return 1;
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}
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Module *M = UpgradeAssembly(InputFilename, *In, Debug, AddAttrs);
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if (!M) {
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cerr << argv[0] << ": No module returned from assembly parsing\n";
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*Out << argv[0] << ": parse failed.";
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exit(1);
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}
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// Finally, print the module on the output stream.
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M->print(Out);
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} catch (const std::string& caught_message) {
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cerr << argv[0] << ": " << caught_message << "\n";
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exitCode = 1;
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} catch (...) {
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cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
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exitCode = 1;
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}
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if (Out != &std::cout) delete Out;
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return exitCode;
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}
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