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Diffstat (limited to 'tools/llvmc/llvmc.cpp')
| -rw-r--r-- | tools/llvmc/llvmc.cpp | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/tools/llvmc/llvmc.cpp b/tools/llvmc/llvmc.cpp new file mode 100644 index 0000000000..7eaa98eedc --- /dev/null +++ b/tools/llvmc/llvmc.cpp @@ -0,0 +1,372 @@ +//===--- llvmc.cpp - The LLVM Compiler Driver -------------------*- C++ -*-===// +// +// 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 tool provides a single point of access to the LLVM compilation tools. +// It has many options. To discover the options supported please refer to the +// tools' manual page (docs/CommandGuide/html/llvmc.html) or run the tool with +// the --help option. +// +//===------------------------------------------------------------------------=== + +#include "CompilerDriver.h" +#include "Configuration.h" +#include "llvm/Pass.h" +#include "llvm/System/Signals.h" +#include "llvm/Support/CommandLine.h" +#include <iostream> + +using namespace llvm; + +namespace { +//===------------------------------------------------------------------------=== +//=== PHASE OPTIONS +//===------------------------------------------------------------------------=== +cl::opt<CompilerDriver::Phases> FinalPhase(cl::Optional, + cl::desc("Choose final phase of compilation:"), + cl::init(CompilerDriver::LINKING), + cl::values( + clEnumValN(CompilerDriver::PREPROCESSING,"E", + "Stop compilation after pre-processing phase"), + clEnumValN(CompilerDriver::TRANSLATION, "t", + "Stop compilation after translation phase"), + clEnumValN(CompilerDriver::OPTIMIZATION,"c", + "Stop compilation after optimization phase"), + clEnumValN(CompilerDriver::ASSEMBLY,"S", + "Stop compilation after assembly phase"), + clEnumValEnd + ) +); + +//===------------------------------------------------------------------------=== +//=== OPTIMIZATION OPTIONS +//===------------------------------------------------------------------------=== +cl::opt<CompilerDriver::OptimizationLevels> OptLevel(cl::ZeroOrMore, + cl::desc("Choose level of optimization to apply:"), + cl::init(CompilerDriver::OPT_FAST_COMPILE), + cl::values( + clEnumValN(CompilerDriver::OPT_FAST_COMPILE,"O0", + "An alias for the -O1 option"), + clEnumValN(CompilerDriver::OPT_FAST_COMPILE,"O1", + "Optimize for compilation speed, not execution speed"), + clEnumValN(CompilerDriver::OPT_SIMPLE,"O2", + "Perform simple translation time optimizations"), + clEnumValN(CompilerDriver::OPT_AGGRESSIVE,"O3", + "Perform aggressive translation time optimizations"), + clEnumValN(CompilerDriver::OPT_LINK_TIME,"O4", + "Perform link time optimizations"), + clEnumValN(CompilerDriver::OPT_AGGRESSIVE_LINK_TIME,"O5", + "Perform aggressive link time optimizations"), + clEnumValEnd + ) +); + +//===------------------------------------------------------------------------=== +//=== TOOL OPTIONS +//===------------------------------------------------------------------------=== + +cl::list<std::string> PreprocessorToolOpts("Tpre", cl::ZeroOrMore, + cl::desc("Pass specific options to the pre-processor"), + cl::value_desc("option")); + +cl::alias PreprocessorToolOptsAlias("Wp,", cl::ZeroOrMore, + cl::desc("Alias for -Tpre"), cl::aliasopt(PreprocessorToolOpts)); + +cl::list<std::string> TranslatorToolOpts("Ttrn", cl::ZeroOrMore, + cl::desc("Pass specific options to the assembler"), + cl::value_desc("option")); + +cl::list<std::string> AssemblerToolOpts("Tasm", cl::ZeroOrMore, + cl::desc("Pass specific options to the assembler"), + cl::value_desc("option")); + +cl::alias AssemblerToolOptsAlias("Wa,", cl::ZeroOrMore, + cl::desc("Alias for -Tasm"), cl::aliasopt(AssemblerToolOpts)); + +cl::list<std::string> OptimizerToolOpts("Topt", cl::ZeroOrMore, + cl::desc("Pass specific options to the optimizer"), + cl::value_desc("option")); + +cl::list<std::string> LinkerToolOpts("Tlnk", cl::ZeroOrMore, + cl::desc("Pass specific options to the linker"), + cl::value_desc("option")); + +cl::alias LinkerToolOptsAlias("Wl,", cl::ZeroOrMore, + cl::desc("Alias for -Tlnk"), cl::aliasopt(LinkerToolOpts)); + +cl::list<std::string> fOpts("f", cl::ZeroOrMore, cl::Prefix, + cl::desc("Pass through -f options to compiler tools"), + cl::value_desc("option")); + +cl::list<std::string> MOpts("M", cl::ZeroOrMore, cl::Prefix, + cl::desc("Pass through -M options to compiler tools"), + cl::value_desc("option")); + +cl::list<std::string> WOpts("W", cl::ZeroOrMore, cl::Prefix, + cl::desc("Pass through -W options to compiler tools"), + cl::value_desc("option")); + +cl::list<std::string> BOpt("B", cl::ZeroOrMore, cl::Prefix, + cl::desc("Specify path to find llvmc sub-tools"), + cl::value_desc("dir")); + +//===------------------------------------------------------------------------=== +//=== INPUT OPTIONS +//===------------------------------------------------------------------------=== + +cl::list<std::string> LibPaths("L", cl::Prefix, + cl::desc("Specify a library search path"), cl::value_desc("dir")); + +cl::list<std::string> Libraries("l", cl::Prefix, + cl::desc("Specify base name of libraries to link to"), cl::value_desc("lib")); + +cl::list<std::string> Includes("I", cl::Prefix, + cl::desc("Specify location to search for included source"), + cl::value_desc("dir")); + +cl::list<std::string> Defines("D", cl::Prefix, + cl::desc("Specify a pre-processor symbol to define"), + cl::value_desc("symbol")); + +//===------------------------------------------------------------------------=== +//=== OUTPUT OPTIONS +//===------------------------------------------------------------------------=== + +cl::opt<std::string> OutputFilename("o", + cl::desc("Override output filename"), cl::value_desc("file")); + +cl::opt<std::string> OutputMachine("m", cl::Prefix, + cl::desc("Specify a target machine"), cl::value_desc("machine")); + +cl::opt<bool> Native("native", cl::init(false), + cl::desc("Generative native code instead of bytecode")); + +cl::opt<bool> DebugOutput("g", cl::init(false), + cl::desc("Generate objects that include debug symbols")); + +cl::opt<bool> StripOutput("strip", cl::init(false), + cl::desc("Strip all symbols from linked output file")); + +cl::opt<std::string> PrintFileName("print-fname", cl::Optional, + cl::value_desc("file"), + cl::desc("Print the full path for the option's value")); + +//===------------------------------------------------------------------------=== +//=== INFORMATION OPTIONS +//===------------------------------------------------------------------------=== + +cl::opt<bool> DryRun("dry-run", cl::Optional, cl::init(false), + cl::desc("Do everything but perform the compilation actions")); + +cl::alias DryRunAlias("y", cl::Optional, + cl::desc("Alias for -dry-run"), cl::aliasopt(DryRun)); + +cl::opt<bool> Verbose("verbose", cl::Optional, cl::init(false), + cl::desc("Print out each action taken")); + +cl::alias VerboseAlias("v", cl::Optional, + cl::desc("Alias for -verbose"), cl::aliasopt(Verbose)); + +cl::opt<bool> Debug("debug", cl::Optional, cl::init(false), + cl::Hidden, cl::desc("Print out debugging information")); + +cl::alias DebugAlias("d", cl::Optional, + cl::desc("Alias for -debug"), cl::aliasopt(Debug)); + +cl::opt<bool> TimeActions("time-actions", cl::Optional, cl::init(false), + cl::desc("Print execution time for each action taken")); + +cl::opt<bool> ShowStats("stats", cl::Optional, cl::init(false), + cl::desc("Print statistics accumulated during optimization")); + +//===------------------------------------------------------------------------=== +//=== ADVANCED OPTIONS +//===------------------------------------------------------------------------=== + +static cl::opt<std::string> ConfigDir("config-dir", cl::Optional, + cl::desc("Specify configuration directory to override defaults"), + cl::value_desc("dir")); + +static cl::opt<bool> EmitRawCode("emit-raw-code", cl::Hidden, cl::Optional, + cl::desc("Emit raw, unoptimized code")); + +static cl::opt<bool> PipeCommands("pipe", cl::Optional, + cl::desc("Invoke sub-commands by linking input/output with pipes")); + +static cl::opt<bool> KeepTemps("keep-temps", cl::Optional, + cl::desc("Don't delete temporary files created by llvmc")); + +//===------------------------------------------------------------------------=== +//=== POSITIONAL OPTIONS +//===------------------------------------------------------------------------=== + +static cl::list<std::string> Files(cl::Positional, cl::ZeroOrMore, + cl::desc("[Sources/objects/libraries]")); + +static cl::list<std::string> Languages("x", cl::ZeroOrMore, + cl::desc("Specify the source language for subsequent files"), + cl::value_desc("language")); + +//===------------------------------------------------------------------------=== +//=== GetFileType - determine type of a file +//===------------------------------------------------------------------------=== +const std::string GetFileType(const std::string& fname, unsigned pos) { + static std::vector<std::string>::iterator langIt = Languages.begin(); + static std::string CurrLang = ""; + + // If a -x LANG option has been specified .. + if (langIt != Languages.end()) + // If the -x LANG option came before the current file on command line + if (Languages.getPosition( langIt - Languages.begin() ) < pos) { + // use that language + CurrLang = *langIt++; + return CurrLang; + } + + // If there's a current language in effect + if (!CurrLang.empty()) + return CurrLang; // use that language + + // otherwise just determine lang from the filename's suffix + return fname.substr(fname.rfind('.', fname.size()) + 1); +} + +} // end anonymous namespace + +void handleTerminatingOptions(CompilerDriver* CD) { + if (!PrintFileName.empty()) { + sys::Path path = CD->GetPathForLinkageItem(PrintFileName, false); + std::string p = path.toString(); + if (p.empty()) + std::cout << "Can't locate `" << PrintFileName << "'.\n"; + else + std::cout << p << '\n'; + exit(0); + } +} + +/// @brief The main program for llvmc +int main(int argc, char **argv) { + // Make sure we print stack trace if we get bad signals + sys::PrintStackTraceOnErrorSignal(); + + try { + + // Parse the command line options + cl::ParseCommandLineOptions(argc, argv, + " LLVM Compiler Driver (llvmc)\n\n" + " This program provides easy invocation of the LLVM tool set\n" + " and other compiler tools.\n" + ); + + // Deal with unimplemented options. + if (PipeCommands) + throw std::string("Not implemented yet: -pipe"); + + if (OutputFilename.empty()) + if (OptLevel == CompilerDriver::LINKING) + OutputFilename = "a.out"; + + // Construct the ConfigDataProvider object + LLVMC_ConfigDataProvider Provider; + Provider.setConfigDir(sys::Path(ConfigDir)); + + // Construct the CompilerDriver object + CompilerDriver* CD = CompilerDriver::Get(Provider); + + // If the LLVM_LIB_SEARCH_PATH environment variable is + // set, append it to the list of places to search for libraries + char *srchPath = getenv("LLVM_LIB_SEARCH_PATH"); + if (srchPath != NULL && strlen(srchPath) != 0) + LibPaths.push_back(std::string(srchPath)); + + // Set the driver flags based on command line options + unsigned flags = 0; + if (Verbose) flags |= CompilerDriver::VERBOSE_FLAG; + if (Debug) flags |= CompilerDriver::DEBUG_FLAG; + if (DryRun) flags |= CompilerDriver::DRY_RUN_FLAG; + if (Native) flags |= CompilerDriver::EMIT_NATIVE_FLAG; + if (EmitRawCode) flags |= CompilerDriver::EMIT_RAW_FLAG; + if (KeepTemps) flags |= CompilerDriver::KEEP_TEMPS_FLAG; + if (ShowStats) flags |= CompilerDriver::SHOW_STATS_FLAG; + if (TimeActions) flags |= CompilerDriver::TIME_ACTIONS_FLAG; + if (TimePassesIsEnabled) flags |= CompilerDriver::TIME_PASSES_FLAG; + if (StripOutput) flags |= CompilerDriver::STRIP_OUTPUT_FLAG; + CD->setDriverFlags(flags); + + // Specify required parameters + CD->setFinalPhase(FinalPhase); + CD->setOptimization(OptLevel); + CD->setOutputMachine(OutputMachine); + CD->setIncludePaths(Includes); + CD->setSymbolDefines(Defines); + CD->setLibraryPaths(LibPaths); + CD->setfPassThrough(fOpts); + CD->setMPassThrough(MOpts); + CD->setWPassThrough(WOpts); + + // Provide additional tool arguments + if (!PreprocessorToolOpts.empty()) + CD->setPhaseArgs(CompilerDriver::PREPROCESSING, PreprocessorToolOpts); + if (!TranslatorToolOpts.empty()) + CD->setPhaseArgs(CompilerDriver::TRANSLATION, TranslatorToolOpts); + if (!OptimizerToolOpts.empty()) + CD->setPhaseArgs(CompilerDriver::OPTIMIZATION, OptimizerToolOpts); + if (!AssemblerToolOpts.empty()) + CD->setPhaseArgs(CompilerDriver::ASSEMBLY,AssemblerToolOpts); + if (!LinkerToolOpts.empty()) + CD->setPhaseArgs(CompilerDriver::LINKING, LinkerToolOpts); + + // Check for options that cause us to terminate before any significant work + // is done. + handleTerminatingOptions(CD); + + // Prepare the list of files to be compiled by the CompilerDriver. + CompilerDriver::InputList InpList; + std::vector<std::string>::iterator fileIt = Files.begin(); + std::vector<std::string>::iterator libIt = Libraries.begin(); + unsigned libPos = 0, filePos = 0; + while ( 1 ) { + if (libIt != Libraries.end()) + libPos = Libraries.getPosition( libIt - Libraries.begin() ); + else + libPos = 0; + if (fileIt != Files.end()) + filePos = Files.getPosition(fileIt - Files.begin()); + else + filePos = 0; + + if (filePos != 0 && (libPos == 0 || filePos < libPos)) { + // Add a source file + InpList.push_back(std::make_pair(*fileIt, + GetFileType(*fileIt, filePos))); + ++fileIt; + } else if ( libPos != 0 && (filePos == 0 || libPos < filePos) ) { + // Add a library + InpList.push_back(std::make_pair(*libIt++, "")); + } + else + break; // we're done with the list + } + + // Tell the driver to do its thing + int result = CD->execute(InpList, sys::Path(OutputFilename)); + if (result != 0) { + throw std::string("Error executing actions. Terminated."); + return result; + } + + // All is good, return success + return 0; + } catch (const std::string& msg) { + std::cerr << argv[0] << ": " << msg << '\n'; + } catch (...) { + std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n"; + } + return 1; +} |