Initial Commit of llvm2cpp

This is a safekeeping commit. The program is not finished. It currently
handles modules, types, global variables and function declarations. Blocks
and instructions remain to be done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28528 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2006-05-29 00:57:22 +00:00
parent bd82277cbb
commit fb0c0dc960
4 changed files with 2174 additions and 0 deletions

1995
tools/llvm2cpp/CppWriter.cpp Normal file

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//===--- CppWriter.h - Generate C++ IR to C++ Source Interface ------------===//
//
// 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 file declares a function, WriteModuleToCppFile that will convert a
// Module into the corresponding C++ code to construct the same module.
//
//===------------------------------------------------------------------------===
#include <ostream>
namespace llvm {
class Module;
void WriteModuleToCppFile(Module* mod, std::ostream& out);
}

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tools/llvm2cpp/Makefile Normal file
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##===- tools/llvm-as/Makefile ------------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
# This file was developed by the LLVM research group and is distributed under
# the University of Illinois Open Source License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
LEVEL = ../..
TOOLNAME = llvm2cpp
USEDLIBS = LLVMAsmParser LLVMBCWriter LLVMCore \
LLVMSupport.a LLVMbzip2 LLVMSystem.a
include $(LEVEL)/Makefile.common
tryit: all-local recurty.cpp globalvars.cpp
%.cpp : %.ll
llvm2cpp $*.ll -f -o $*.cpp
gcc -I$(LLVM_SRC_ROOT)/include -I$(LLVM_OBJ_ROOT)/include -g \
-D__STDC_LIMIT_MACROS -L$(LibDir) $(LibDir)/LLVMCore.o -lLLVMSupport \
$(LibDir)/LLVMbzip2.o -lLLVMSystem -lstdc++ \
$*.cpp -o $*

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tools/llvm2cpp/llvm2cpp.cpp Normal file
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//===--- llvm-as.cpp - The low-level LLVM assembler -----------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This utility may be invoked in the following manner:
// llvm-as --help - Output information about command line switches
// llvm-as [options] - Read LLVM asm from stdin, write bytecode to stdout
// llvm-as [options] x.ll - Read LLVM asm from the x.ll file, write bytecode
// to the x.bc file.
//
//===------------------------------------------------------------------------===
#include "llvm/Module.h"
#include "llvm/Assembly/Parser.h"
#include "llvm/Bytecode/Writer.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/Support/CommandLine.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 assembly 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"));
static cl::opt<bool>
DisableVerify("disable-verify", cl::Hidden,
cl::desc("Do not run verifier on input LLVM (dangerous!)"));
int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm .ll -> .cpp assembler\n");
sys::PrintStackTraceOnErrorSignal();
int exitCode = 0;
std::ostream *Out = 0;
try {
// Parse the file now...
std::auto_ptr<Module> M(ParseAssemblyFile(InputFilename));
if (M.get() == 0) {
std::cerr << argv[0] << ": assembly didn't read correctly.\n";
return 1;
}
try {
if (!DisableVerify)
verifyModule(*M.get(), ThrowExceptionAction);
} catch (const std::string &Err) {
std::cerr << argv[0]
<< ": assembly parsed, but does not verify as correct!\n";
std::cerr << Err;
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
// FIXME: cout is not binary!
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);
} catch (const ParseException &E) {
std::cerr << argv[0] << ": " << E.getMessage() << "\n";
exitCode = 1;
} catch (const std::string& msg) {
std::cerr << argv[0] << ": " << msg << "\n";
exitCode = 1;
} catch (...) {
std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
exitCode = 1;
}
if (Out != &std::cout) delete Out;
return exitCode;
}