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-rw-r--r--contrib/llvm/tools/llvm-dis/llvm-dis.cpp138
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diff --git a/contrib/llvm/tools/llvm-dis/llvm-dis.cpp b/contrib/llvm/tools/llvm-dis/llvm-dis.cpp
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-//===-- llvm-dis.cpp - The low-level LLVM disassembler --------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file 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-dis [options] - Read LLVM bitcode from stdin, write asm to stdout
-// llvm-dis [options] x.bc - Read LLVM bitcode from the x.bc file, write asm
-// to the x.ll file.
-// Options:
-// --help - Output information about command line switches
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Type.h"
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/Assembly/AssemblyAnnotationWriter.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/FormattedStream.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Signals.h"
-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"));
-
-namespace {
-
-class CommentWriter : public AssemblyAnnotationWriter {
-public:
- void emitFunctionAnnot(const Function *F,
- formatted_raw_ostream &OS) {
- OS << "; [#uses=" << F->getNumUses() << ']'; // Output # uses
- OS << '\n';
- }
- void printInfoComment(const Value &V, formatted_raw_ostream &OS) {
- if (V.getType()->isVoidTy()) return;
-
- OS.PadToColumn(50);
- OS << "; [#uses=" << V.getNumUses() << ']'; // Output # uses
- }
-};
-
-} // end anon namespace
-
-int main(int argc, char **argv) {
- // Print a stack trace if we signal out.
- sys::PrintStackTraceOnErrorSignal();
- PrettyStackTraceProgram X(argc, argv);
-
- LLVMContext &Context = getGlobalContext();
- llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
-
-
- cl::ParseCommandLineOptions(argc, argv, "llvm .bc -> .ll disassembler\n");
-
- std::string ErrorMessage;
- std::auto_ptr<Module> M;
-
- if (MemoryBuffer *Buffer
- = MemoryBuffer::getFileOrSTDIN(InputFilename, &ErrorMessage)) {
- M.reset(ParseBitcodeFile(Buffer, Context, &ErrorMessage));
- delete Buffer;
- }
-
- if (M.get() == 0) {
- errs() << argv[0] << ": ";
- if (ErrorMessage.size())
- errs() << ErrorMessage << "\n";
- else
- errs() << "bitcode didn't read correctly.\n";
- return 1;
- }
-
- // Just use stdout. We won't actually print anything on it.
- if (DontPrint)
- OutputFilename = "-";
-
- if (OutputFilename.empty()) { // Unspecified output, infer it.
- if (InputFilename == "-") {
- OutputFilename = "-";
- } else {
- const std::string &IFN = InputFilename;
- int Len = IFN.length();
- // If the source ends in .bc, strip it off.
- 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::string ErrorInfo;
- OwningPtr<tool_output_file>
- Out(new tool_output_file(OutputFilename.c_str(), ErrorInfo,
- raw_fd_ostream::F_Binary));
- if (!ErrorInfo.empty()) {
- errs() << ErrorInfo << '\n';
- return 1;
- }
-
- OwningPtr<AssemblyAnnotationWriter> Annotator;
- if (ShowAnnotations)
- Annotator.reset(new CommentWriter());
-
- // All that llvm-dis does is write the assembly to a file.
- if (!DontPrint)
- M->print(Out->os(), Annotator.get());
-
- // Declare success.
- Out->keep();
-
- return 0;
-}
-
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