Initial, non-functional, version of llvm-upgrade. This version just echos
its input. Committed for safekeeping purposes. Don't use this yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32030 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-upgrade/llvm-upgrade.cpp b/tools/llvm-upgrade/llvm-upgrade.cpp
new file mode 100644
index 0000000..9db8ee5
--- /dev/null
+++ b/tools/llvm-upgrade/llvm-upgrade.cpp
@@ -0,0 +1,114 @@
+//===--- llvm-upgrade.cpp - The LLVM Assembly Upgrader --------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by Reid Spencer and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This utility will upgrade LLVM 1.9 Assembly to 2.0 format. It may be
+// invoked as a filter, like this:
+// llvm-1.9/bin/llvm-dis < 1.9.bc | llvm-upgrade | llvm-as > 2.0.bc
+//
+// or, you can directly upgrade, like this:
+// llvm-upgrade -o 2.0.ll < 1.9.ll
+//
+// llvm-upgrade won't overwrite files by default. Use -f to force it to
+// overwrite the output file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ParserInternals.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Streams.h"
+#include "llvm/Support/SystemUtils.h"
+#include "llvm/System/Signals.h"
+#include <fstream>
+#include <iostream>
+#include <memory>
+using namespace llvm;
+
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input .llvm file>"), cl::init("-"));
+
+static cl::opt<std::string>
+OutputFilename("o", cl::desc("Override output filename"),
+ cl::value_desc("filename"));
+
+static cl::opt<bool>
+Force("f", cl::desc("Overwrite output files"));
+
+int main(int argc, char **argv) {
+ cl::ParseCommandLineOptions(argc, argv, " llvm .ll -> .bc assembler\n");
+ sys::PrintStackTraceOnErrorSignal();
+
+ int exitCode = 0;
+ std::ostream *Out = 0;
+ try {
+ if (OutputFilename != "") { // Specified an output filename?
+ if (OutputFilename != "-") { // Not stdout?
+ if (!Force && std::ifstream(OutputFilename.c_str())) {
+ // If force is not specified, make sure not to overwrite a file!
+ llvm_cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists!\n"
+ << "Use -f command line argument to force output\n";
+ return 1;
+ }
+ Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
+ std::ios::trunc);
+ } else { // Specified stdout
+ Out = &std::cout;
+ }
+ } else {
+ if (InputFilename == "-") {
+ OutputFilename = "-";
+ Out = &std::cout;
+ } else {
+ std::string IFN = InputFilename;
+ int Len = IFN.length();
+ if (IFN[Len-3] == '.' && IFN[Len-2] == 'l' && IFN[Len-1] == 'l') {
+ // Source ends in .ll
+ OutputFilename = std::string(IFN.begin(), IFN.end()-3);
+ } else {
+ OutputFilename = IFN; // Append to it
+ }
+ OutputFilename += ".llu";
+
+ if (!Force && std::ifstream(OutputFilename.c_str())) {
+ // If force is not specified, make sure not to overwrite a file!
+ llvm_cerr << argv[0] << ": error opening '" << OutputFilename
+ << "': file exists!\n"
+ << "Use -f command line argument to force output\n";
+ return 1;
+ }
+
+ Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
+ std::ios::trunc | std::ios::binary);
+ // Make sure that the Out file gets unlinked from the disk if we get a
+ // SIGINT
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+ }
+ }
+
+ if (!Out->good()) {
+ llvm_cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
+ return 1;
+ }
+
+ UpgradeAssembly(InputFilename, *Out);
+
+ /*
+ } catch (const std::string& caught_message) {
+ llvm_cerr << argv[0] << ": " << caught_message << "\n";
+ exitCode = 1;
+ */
+ } catch (...) {
+ llvm_cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
+ exitCode = 1;
+ }
+
+ if (Out != &std::cout) delete Out;
+ return exitCode;
+}
+