It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm2cpp/llvm2cpp.cpp b/tools/llvm2cpp/llvm2cpp.cpp
new file mode 100644
index 0000000..2db7543
--- /dev/null
+++ b/tools/llvm2cpp/llvm2cpp.cpp
@@ -0,0 +1,122 @@
+//===--- llvm2cpp.cpp - LLVM IR to C++ Translator -------------------------===//
+//
+// 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 program converts an input LLVM assembly file (.ll) into a C++ source
+// file that makes calls to the LLVM C++ API to produce the same module. The
+// generated program verifies what it built and then runs the PrintAssemblyPass
+// to reproduce the input originally given to llvm2cpp.
+//
+// Use the --help option for help with command line options.
+//
+//===------------------------------------------------------------------------===
+
+#include "llvm/Module.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/Analysis/Verifier.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/SystemUtils.h"
+#include "llvm/System/Signals.h"
+#include "CppWriter.h"
+#include <fstream>
+#include <iostream>
+#include <memory>
+using namespace llvm;
+
+static cl::opt<std::string>
+InputFilename(cl::Positional, cl::desc("<input LLVM bitcode 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) {
+ llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
+ cl::ParseCommandLineOptions(argc, argv, " llvm .ll -> .cpp assembler\n");
+ sys::PrintStackTraceOnErrorSignal();
+
+ int exitCode = 0;
+ std::ostream *Out = 0;
+ std::string ErrorMessage;
+
+ std::auto_ptr<Module> M;
+ std::auto_ptr<MemoryBuffer> Buffer(
+ MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage));
+ if (Buffer.get())
+ M.reset(ParseBitcodeFile(Buffer.get(), &ErrorMessage));
+ if (M.get() == 0) {
+ std::cerr << argv[0] << ": ";
+ if (ErrorMessage.size())
+ std::cerr << ErrorMessage << "\n";
+ else
+ std::cerr << "bitcode didn't read correctly.\n";
+ return 1;
+ }
+
+ 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!
+ std::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);
+ } 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 a .cpp to it
+ }
+ OutputFilename += ".cpp";
+
+ if (!Force && std::ifstream(OutputFilename.c_str())) {
+ // If force is not specified, make sure not to overwrite a file!
+ std::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()) {
+ std::cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
+ return 1;
+ }
+
+ WriteModuleToCppFile(M.get(), *Out);
+
+ if (Out != &std::cout) delete Out;
+ return exitCode;
+}
+