X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Fllvm-dis%2Fllvm-dis.cpp;h=9fb056510c007a188a707880cf23649cebdd5b0e;hb=ccbfd5b18a79a07229f11af478843eae16ac9b26;hp=bf46fe62e3f8a831801f86952fcb8c0cf7ab34ca;hpb=3ce0ea8fd8b6b02acc5828cbc90f113a3cf33207;p=oota-llvm.git diff --git a/tools/llvm-dis/llvm-dis.cpp b/tools/llvm-dis/llvm-dis.cpp index bf46fe62e3f..9fb056510c0 100644 --- a/tools/llvm-dis/llvm-dis.cpp +++ b/tools/llvm-dis/llvm-dis.cpp @@ -1,130 +1,193 @@ +//===-- 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. +// //===----------------------------------------------------------------------===// -// LLVM 'DIS' UTILITY // // This utility may be invoked in the following manner: -// dis [options] - Read LLVM bytecode from stdin, write assembly to stdout -// dis [options] x.bc - Read LLVM bytecode from the x.bc file, write assembly -// to the x.ll file. +// 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 -// -c - Print C code instead of LLVM assembly // //===----------------------------------------------------------------------===// -#include "llvm/Module.h" -#include "llvm/PassManager.h" -#include "llvm/Bytecode/Reader.h" -#include "llvm/Assembly/CWriter.h" -#include "llvm/Assembly/PrintModulePass.h" -#include "Support/CommandLine.h" -#include "Support/Signals.h" -#include -#include - -// OutputMode - The different orderings to print basic blocks in... -enum OutputMode { - llvm = 0, // Generate LLVM assembly (the default) - c, // Generate C code -}; +#include "llvm/IR/LLVMContext.h" +#include "llvm/Bitcode/ReaderWriter.h" +#include "llvm/DebugInfo.h" +#include "llvm/IR/AssemblyAnnotationWriter.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/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 "llvm/Support/system_error.h" +using namespace llvm; static cl::opt -InputFilename(cl::Positional, cl::desc(""), cl::init("-")); +InputFilename(cl::Positional, cl::desc(""), cl::init("-")); static cl::opt -OutputFilename("o", cl::desc("Override output filename"), +OutputFilename("o", cl::desc("Override output filename"), cl::value_desc("filename")); static cl::opt -Force("f", cl::desc("Overwrite output files")); +Force("f", cl::desc("Enable binary output on terminals")); + +static cl::opt +DontPrint("disable-output", cl::desc("Don't output the .ll file"), cl::Hidden); + +static cl::opt +ShowAnnotations("show-annotations", + cl::desc("Add informational comments to the .ll file")); + +namespace { + +static void printDebugLoc(const DebugLoc &DL, formatted_raw_ostream &OS) { + OS << DL.getLine() << ":" << DL.getCol(); + if (MDNode *N = DL.getInlinedAt(getGlobalContext())) { + DebugLoc IDL = DebugLoc::getFromDILocation(N); + if (!IDL.isUnknown()) { + OS << "@"; + printDebugLoc(IDL,OS); + } + } +} +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) { + bool Padded = false; + if (!V.getType()->isVoidTy()) { + OS.PadToColumn(50); + Padded = true; + OS << "; [#uses=" << V.getNumUses() << " type=" << *V.getType() << "]"; // Output # uses and type + } + if (const Instruction *I = dyn_cast(&V)) { + const DebugLoc &DL = I->getDebugLoc(); + if (!DL.isUnknown()) { + if (!Padded) { + OS.PadToColumn(50); + Padded = true; + OS << ";"; + } + OS << " [debug line = "; + printDebugLoc(DL,OS); + OS << "]"; + } + if (const DbgDeclareInst *DDI = dyn_cast(I)) { + DIVariable Var(DDI->getVariable()); + if (!Padded) { + OS.PadToColumn(50); + OS << ";"; + } + OS << " [debug variable = " << Var.getName() << "]"; + } + else if (const DbgValueInst *DVI = dyn_cast(I)) { + DIVariable Var(DVI->getVariable()); + if (!Padded) { + OS.PadToColumn(50); + OS << ";"; + } + OS << " [debug variable = " << Var.getName() << "]"; + } + } + } +}; -static cl::opt -WriteMode(cl::desc("Specify the output format:"), - cl::values( - clEnumVal(llvm, "Output LLVM assembly"), - clEnumVal(c , "Output C code for program"), - 0)); +} // end anon namespace int main(int argc, char **argv) { - cl::ParseCommandLineOptions(argc, argv, " llvm .bc -> .ll disassembler\n"); - std::ostream *Out = &std::cout; // Default to printing to stdout... + // 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; + OwningPtr M; + + // Use the bitcode streaming interface + DataStreamer *streamer = getDataFileStreamer(InputFilename, &ErrorMessage); + if (streamer) { + std::string DisplayFilename; + if (InputFilename == "-") + DisplayFilename = ""; + else + DisplayFilename = InputFilename; + M.reset(getStreamedBitcodeModule(DisplayFilename, streamer, Context, + &ErrorMessage)); + if(M.get() != 0) { + if (error_code EC = M->materializeAllPermanently()) { + ErrorMessage = EC.message(); + M.reset(); + } + } + } - std::auto_ptr M(ParseBytecodeFile(InputFilename, &ErrorMessage)); if (M.get() == 0) { - std::cerr << argv[0] << ": "; + errs() << argv[0] << ": "; if (ErrorMessage.size()) - std::cerr << ErrorMessage << "\n"; + errs() << ErrorMessage << "\n"; else - std::cerr << "bytecode didn't read correctly.\n"; + errs() << "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! Sending to standard output.\n"; - } else { - Out = new std::ofstream(OutputFilename.c_str()); - } - } - } else { + + // 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 { - std::string IFN = InputFilename; + const std::string &IFN = InputFilename; int Len = IFN.length(); - if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') { - // Source ends in .bc - OutputFilename = std::string(IFN.begin(), IFN.end()-3); - } else { - OutputFilename = IFN; // Append a .ll to it - } - if (WriteMode == c) - OutputFilename += ".c"; + // 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 += ".ll"; - - 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! Sending to standard output.\n"; - } else { - Out = new std::ofstream(OutputFilename.c_str()); - - // Make sure that the Out file gets unlink'd from the disk if we get a - // SIGINT - RemoveFileOnSignal(OutputFilename); - } + OutputFilename = IFN+".ll"; } } - if (!Out->good()) { - std::cerr << argv[0] << ": error opening " << OutputFilename - << ": sending to stdout instead!\n"; - Out = &std::cout; + std::string ErrorInfo; + OwningPtr Out(new tool_output_file( + OutputFilename.c_str(), ErrorInfo, sys::fs::F_Binary)); + if (!ErrorInfo.empty()) { + errs() << ErrorInfo << '\n'; + return 1; } - // All that dis does is write the assembly or C out to a file... - // - PassManager Passes; - - switch (WriteMode) { - case llvm: // Output LLVM assembly - Passes.add(new PrintModulePass(Out)); - break; - case c: // Convert LLVM to C - Passes.add(createWriteToCPass(*Out)); - break; - } + OwningPtr Annotator; + if (ShowAnnotations) + Annotator.reset(new CommentWriter()); - Passes.run(*M.get()); + // All that llvm-dis does is write the assembly to a file. + if (!DontPrint) + M->print(Out->os(), Annotator.get()); + + // Declare success. + Out->keep(); - if (Out != &std::cout) { - ((std::ofstream*)Out)->close(); - delete Out; - } return 0; } -