forked from OSchip/llvm-project
99 lines
3.4 KiB
C++
99 lines
3.4 KiB
C++
//===-- llvm-bcanalyzer.cpp - Byte Code Analyzer --------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Reid Spencer and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This tool may be invoked in the following manner:
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// llvm-bcanalyzer [options] - Read LLVM bytecode from stdin
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// llvm-bcanalyzer [options] x.bc - Read LLVM bytecode from the x.bc file
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//
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// Options:
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// --help - Output information about command line switches
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// --nodetails - Don't print out detailed informaton about individual
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// blocks and functions
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// --dump - Dump low-level bytecode structure in readable format
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//
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// This tool provides analytical information about a bytecode file. It is
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// intended as an aid to developers of bytecode reading and writing software. It
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// produces on std::out a summary of the bytecode file that shows various
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// statistics about the contents of the file. By default this information is
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// detailed and contains information about individual bytecode blocks and the
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// functions in the module. To avoid this more detailed output, use the
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// -nodetails option to limit the output to just module level information.
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// The tool is also able to print a bytecode file in a straight forward text
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// format that shows the containment and relationships of the information in
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// the bytecode file (-dump option).
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//===----------------------------------------------------------------------===//
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#include "llvm/Analysis/Verifier.h"
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#include "llvm/Bytecode/Analyzer.h"
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#include "Support/CommandLine.h"
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#include "llvm/System/Signals.h"
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#include <fstream>
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#include <iostream>
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using namespace llvm;
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static cl::opt<std::string>
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InputFilename(cl::Positional, cl::desc("<input bytecode>"), cl::init("-"));
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static cl::opt<bool> NoDetails ("nodetails", cl::desc("Skip detailed output"));
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static cl::opt<bool> Dump ("dump", cl::desc("Dump low level bytecode trace"));
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static cl::opt<bool> Verify ("verify", cl::desc("Progressively verify module"));
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int
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main(int argc, char **argv)
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{
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cl::ParseCommandLineOptions(argc, argv,
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" llvm-bcanalyzer Analysis of ByteCode Dumper\n");
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PrintStackTraceOnErrorSignal();
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std::ostream* Out = &std::cout; // Default to printing to stdout...
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std::istream* In = &std::cin; // Default to reading stdin
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std::string ErrorMessage;
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BytecodeAnalysis bca;
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/// Determine what to generate
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bca.dumpBytecode = Dump;
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bca.detailedResults = !NoDetails;
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bca.progressiveVerify = Verify;
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/// Analyze the bytecode file
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Module* M = AnalyzeBytecodeFile(InputFilename, bca, &ErrorMessage);
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// All that bcanalyzer does is write the gathered statistics to the output
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PrintBytecodeAnalysis(bca,*Out);
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if ( M && Verify ) {
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std::string verificationMsg;
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try {
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verifyModule( *M, ThrowExceptionAction );
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} catch (std::string& errmsg ) {
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verificationMsg = errmsg;
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}
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if ( verificationMsg.length() > 0 )
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std::cerr << "Final Verification Message: " << verificationMsg << "\n";
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}
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// If there was an error, print it and stop.
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if ( ErrorMessage.size() ) {
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std::cerr << argv[0] << ": " << ErrorMessage << "\n";
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return 1;
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}
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if (Out != &std::cout) {
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((std::ofstream*)Out)->close();
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delete Out;
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}
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return 0;
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}
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// vim: sw=2
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