#include "llvm/IR/LLVMContext.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/IR/AssemblyAnnotationWriter.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/DataStream.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FormattedStream.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Signals.h"
#include "llvm/Support/ToolOutputFile.h"
#include <system_error>
using namespace llvm;
static cl::opt<std::string>
InputFilename(cl::Positional, cl::desc("<input bitcode>"), 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("Enable binary output on terminals"));
static cl::opt<bool>
DontPrint("disable-output", cl::desc("Don't output the .ll file"), cl::Hidden);
static cl::opt<bool>
ShowAnnotations("show-annotations",
cl::desc("Add informational comments to the .ll file"));
static cl::opt<bool> PreserveAssemblyUseListOrder(
"preserve-ll-uselistorder",
cl::desc("Preserve use-list order when writing LLVM assembly."),
cl::init(false), cl::Hidden);
namespace {
static void printDebugLoc(const DebugLoc &DL, formatted_raw_ostream &OS) {
OS << DL.getLine() << ":" << DL.getCol();
if (DILocation *IDL = DL.getInlinedAt()) {
OS << "@";
printDebugLoc(IDL, OS);
}
}
class CommentWriter : public AssemblyAnnotationWriter {
public:
void emitFunctionAnnot(const Function *F,
formatted_raw_ostream &OS) override {
OS << "; [#uses=" << F->getNumUses() << ']'; OS << '\n';
}
void printInfoComment(const Value &V, formatted_raw_ostream &OS) override {
bool Padded = false;
if (!V.getType()->isVoidTy()) {
OS.PadToColumn(50);
Padded = true;
OS << "; [#uses=" << V.getNumUses() << " type=" << *V.getType() << "]"; }
if (const Instruction *I = dyn_cast<Instruction>(&V)) {
if (const DebugLoc &DL = I->getDebugLoc()) {
if (!Padded) {
OS.PadToColumn(50);
Padded = true;
OS << ";";
}
OS << " [debug line = ";
printDebugLoc(DL,OS);
OS << "]";
}
if (const DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(I)) {
if (!Padded) {
OS.PadToColumn(50);
OS << ";";
}
OS << " [debug variable = " << DDI->getVariable()->getName() << "]";
}
else if (const DbgValueInst *DVI = dyn_cast<DbgValueInst>(I)) {
if (!Padded) {
OS.PadToColumn(50);
OS << ";";
}
OS << " [debug variable = " << DVI->getVariable()->getName() << "]";
}
}
}
};
}
static void diagnosticHandler(const DiagnosticInfo &DI, void *Context) {
raw_ostream &OS = errs();
OS << (char *)Context << ": ";
switch (DI.getSeverity()) {
case DS_Error: OS << "error: "; break;
case DS_Warning: OS << "warning: "; break;
case DS_Remark: OS << "remark: "; break;
case DS_Note: OS << "note: "; break;
}
DiagnosticPrinterRawOStream DP(OS);
DI.print(DP);
OS << '\n';
if (DI.getSeverity() == DS_Error)
exit(1);
}
int main(int argc, char **argv) {
sys::PrintStackTraceOnErrorSignal();
PrettyStackTraceProgram X(argc, argv);
LLVMContext &Context = getGlobalContext();
llvm_shutdown_obj Y;
Context.setDiagnosticHandler(diagnosticHandler, argv[0]);
cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
std::string ErrorMessage;
std::unique_ptr<Module> M;
DataStreamer *Streamer = getDataFileStreamer(InputFilename, &ErrorMessage);
if (Streamer) {
std::string DisplayFilename;
if (InputFilename == "-")
DisplayFilename = "<stdin>";
else
DisplayFilename = InputFilename;
ErrorOr<std::unique_ptr<Module>> MOrErr =
getStreamedBitcodeModule(DisplayFilename, Streamer, Context);
M = std::move(*MOrErr);
M->materializeAllPermanently();
}
if (DontPrint)
OutputFilename = "-";
if (OutputFilename.empty()) { if (InputFilename == "-") {
OutputFilename = "-";
} else {
const std::string &IFN = InputFilename;
int Len = IFN.length();
if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c')
OutputFilename = std::string(IFN.begin(), IFN.end()-3)+".ll";
else
OutputFilename = IFN+".ll";
}
}
std::error_code EC;
std::unique_ptr<tool_output_file> Out(
new tool_output_file(OutputFilename, EC, sys::fs::F_None));
if (EC) {
errs() << EC.message() << '\n';
return 1;
}
std::unique_ptr<AssemblyAnnotationWriter> Annotator;
if (ShowAnnotations)
Annotator.reset(new CommentWriter());
if (!DontPrint)
M->print(Out->os(), Annotator.get(), PreserveAssemblyUseListOrder);
Out->keep();
return 0;
}