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