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llvm/tools/llvmc/CompilerDriver.cpp
Anton Korobeynikov 9ba8a76f8b Add possibility to set memory limit for binaries run via libSystem. This 
is especially needed for bugpoint. This partly implements PR688


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34349 91177308-0d34-0410-b5e6-96231b3b80d8
2007-02-16 19:11:07 +00:00

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//===- CompilerDriver.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 file implements the bulk of the LLVM Compiler Driver (llvmc).
//
//===----------------------------------------------------------------------===//
#include "CompilerDriver.h"
#include "ConfigLexer.h"
#include "llvm/Module.h"
#include "llvm/Bytecode/Reader.h"
#include "llvm/Support/Timer.h"
#include "llvm/System/Signals.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Config/alloca.h"
#include <iostream>
using namespace llvm;
namespace {
void WriteAction(CompilerDriver::Action* action ) {
std::cerr << action->program.c_str();
std::vector<std::string>::const_iterator I = action->args.begin();
while (I != action->args.end()) {
std::cerr << ' ' << *I;
++I;
}
std::cerr << '\n';
}
void DumpAction(CompilerDriver::Action* action) {
std::cerr << "command = " << action->program.c_str();
std::vector<std::string>::const_iterator I = action->args.begin();
while (I != action->args.end()) {
std::cerr << ' ' << *I;
++I;
}
std::cerr << '\n';
std::cerr << "flags = " << action->flags << '\n';
}
void DumpConfigData(CompilerDriver::ConfigData* cd, const std::string& type ){
std::cerr << "Configuration Data For '" << cd->langName << "' (" << type
<< ")\n";
std::cerr << "PreProcessor: ";
DumpAction(&cd->PreProcessor);
std::cerr << "Translator: ";
DumpAction(&cd->Translator);
std::cerr << "Optimizer: ";
DumpAction(&cd->Optimizer);
std::cerr << "Assembler: ";
DumpAction(&cd->Assembler);
std::cerr << "Linker: ";
DumpAction(&cd->Linker);
}
static bool GetBytecodeDependentLibraries(const std::string &fname,
Module::LibraryListType& deplibs,
BCDecompressor_t *BCDC,
std::string* ErrMsg) {
ModuleProvider* MP = getBytecodeModuleProvider(fname, BCDC, ErrMsg);
if (!MP) {
deplibs.clear();
return true;
}
Module* M = MP->releaseModule(ErrMsg);
deplibs = M->getLibraries();
delete M;
delete MP;
return false;
}
class CompilerDriverImpl : public CompilerDriver {
/// @name Constructors
/// @{
public:
CompilerDriverImpl(ConfigDataProvider& confDatProv )
: cdp(&confDatProv)
, finalPhase(LINKING)
, optLevel(OPT_FAST_COMPILE)
, Flags(0)
, machine()
, LibraryPaths()
, TempDir()
, AdditionalArgs()
{
AdditionalArgs.reserve(NUM_PHASES);
StringVector emptyVec;
for (unsigned i = 0; i < NUM_PHASES; ++i)
AdditionalArgs.push_back(emptyVec);
}
virtual ~CompilerDriverImpl() {
cleanup();
cdp = 0;
LibraryPaths.clear();
IncludePaths.clear();
Defines.clear();
TempDir.clear();
AdditionalArgs.clear();
fOptions.clear();
MOptions.clear();
WOptions.clear();
}
/// @}
/// @name Methods
/// @{
public:
virtual void setFinalPhase(Phases phase) {
finalPhase = phase;
}
virtual void setOptimization(OptimizationLevels level) {
optLevel = level;
}
virtual void setDriverFlags(unsigned flags) {
Flags = flags & DRIVER_FLAGS_MASK;
}
virtual void setOutputMachine(const std::string& machineName) {
machine = machineName;
}
virtual void setPhaseArgs(Phases phase, const StringVector& opts) {
assert(phase <= LINKING && phase >= PREPROCESSING);
AdditionalArgs[phase] = opts;
}
virtual void setIncludePaths(const StringVector& paths) {
StringVector::const_iterator I = paths.begin();
StringVector::const_iterator E = paths.end();
while (I != E) {
sys::Path tmp;
tmp.set(*I);
IncludePaths.push_back(tmp);
++I;
}
}
virtual void setSymbolDefines(const StringVector& defs) {
Defines = defs;
}
virtual void setLibraryPaths(const StringVector& paths) {
StringVector::const_iterator I = paths.begin();
StringVector::const_iterator E = paths.end();
while (I != E) {
sys::Path tmp;
tmp.set(*I);
LibraryPaths.push_back(tmp);
++I;
}
}
virtual void addLibraryPath(const sys::Path& libPath) {
LibraryPaths.push_back(libPath);
}
virtual void addToolPath(const sys::Path& toolPath) {
ToolPaths.push_back(toolPath);
}
virtual void setfPassThrough(const StringVector& fOpts) {
fOptions = fOpts;
}
/// @brief Set the list of -M options to be passed through
virtual void setMPassThrough(const StringVector& MOpts) {
MOptions = MOpts;
}
/// @brief Set the list of -W options to be passed through
virtual void setWPassThrough(const StringVector& WOpts) {
WOptions = WOpts;
}
/// @}
/// @name Functions
/// @{
private:
bool isSet(DriverFlags flag) {
return 0 != ((flag & DRIVER_FLAGS_MASK) & Flags);
}
void cleanup() {
if (!isSet(KEEP_TEMPS_FLAG)) {
sys::FileStatus Status;
if (!TempDir.getFileStatus(Status) && Status.isDir)
TempDir.eraseFromDisk(/*remove_contents=*/true);
} else {
std::cout << "Temporary files are in " << TempDir << "\n";
}
}
sys::Path MakeTempFile(const std::string& basename,
const std::string& suffix,
std::string* ErrMsg) {
if (TempDir.isEmpty()) {
TempDir = sys::Path::GetTemporaryDirectory(ErrMsg);
if (TempDir.isEmpty())
return sys::Path();
sys::RemoveDirectoryOnSignal(TempDir);
}
sys::Path result(TempDir);
if (!result.appendComponent(basename)) {
if (ErrMsg)
*ErrMsg = basename + ": can't use this file name";
return sys::Path();
}
if (!result.appendSuffix(suffix)) {
if (ErrMsg)
*ErrMsg = suffix + ": can't use this file suffix";
return sys::Path();
}
return result;
}
Action* GetAction(ConfigData* cd,
const sys::Path& input,
const sys::Path& output,
Phases phase)
{
Action* pat = 0; ///< The pattern/template for the action
Action* action = new Action; ///< The actual action to execute
// Get the action pattern
switch (phase) {
case PREPROCESSING: pat = &cd->PreProcessor; break;
case TRANSLATION: pat = &cd->Translator; break;
case OPTIMIZATION: pat = &cd->Optimizer; break;
case ASSEMBLY: pat = &cd->Assembler; break;
case LINKING: pat = &cd->Linker; break;
default:
assert(!"Invalid driver phase!");
break;
}
assert(pat != 0 && "Invalid command pattern");
// Copy over some pattern things that don't need to change
action->flags = pat->flags;
// See if program starts with wildcard...
std::string programName=pat->program.toString();
if (programName[0] == '%' && programName.length() >2) {
switch(programName[1]){
case 'b':
if (programName.substr(0,8) == "%bindir%") {
std::string tmp(LLVM_BINDIR);
tmp.append(programName.substr(8));
pat->program.set(tmp);
}
break;
case 'l':
if (programName.substr(0,12) == "%llvmgccdir%"){
std::string tmp(LLVMGCCDIR);
tmp.append(programName.substr(12));
pat->program.set(tmp);
}else if (programName.substr(0,13) == "%llvmgccarch%"){
std::string tmp(LLVMGCCARCH);
tmp.append(programName.substr(13));
pat->program.set(tmp);
}else if (programName.substr(0,9) == "%llvmgcc%"){
std::string tmp(LLVMGCC);
tmp.append(programName.substr(9));
pat->program.set(tmp);
}else if (programName.substr(0,9) == "%llvmgxx%"){
std::string tmp(LLVMGXX);
tmp.append(programName.substr(9));
pat->program.set(tmp);
}else if (programName.substr(0,9) == "%llvmcc1%"){
std::string tmp(LLVMCC1);
tmp.append(programName.substr(9));
pat->program.set(tmp);
}else if (programName.substr(0,13) == "%llvmcc1plus%"){
std::string tmp(LLVMCC1PLUS);
tmp.append(programName.substr(13));
pat->program.set(tmp);
}else if (programName.substr(0,8) == "%libdir%") {
std::string tmp(LLVM_LIBDIR);
tmp.append(programName.substr(8));
pat->program.set(tmp);
}
break;
}
}
action->program = pat->program;
// Do the substitutions from the pattern to the actual
StringVector::iterator PI = pat->args.begin();
StringVector::iterator PE = pat->args.end();
while (PI != PE) {
if ((*PI)[0] == '%' && PI->length() >2) {
bool found = true;
switch ((*PI)[1]) {
case 'a':
if (*PI == "%args%") {
if (AdditionalArgs.size() > unsigned(phase))
if (!AdditionalArgs[phase].empty()) {
// Get specific options for each kind of action type
StringVector& addargs = AdditionalArgs[phase];
// Add specific options for each kind of action type
action->args.insert(action->args.end(), addargs.begin(),
addargs.end());
}
} else
found = false;
break;
case 'b':
if (*PI == "%bindir%") {
std::string tmp(*PI);
tmp.replace(0,8,LLVM_BINDIR);
action->args.push_back(tmp);
} else
found = false;
break;
case 'd':
if (*PI == "%defs%") {
StringVector::iterator I = Defines.begin();
StringVector::iterator E = Defines.end();
while (I != E) {
action->args.push_back( std::string("-D") + *I);
++I;
}
} else
found = false;
break;
case 'f':
if (*PI == "%fOpts%") {
if (!fOptions.empty())
action->args.insert(action->args.end(), fOptions.begin(),
fOptions.end());
} else
found = false;
break;
case 'i':
if (*PI == "%in%") {
action->args.push_back(input.toString());
} else if (*PI == "%incls%") {
PathVector::iterator I = IncludePaths.begin();
PathVector::iterator E = IncludePaths.end();
while (I != E) {
action->args.push_back( std::string("-I") + I->toString() );
++I;
}
} else
found = false;
break;
case 'l':
if ((*PI)[1] == 'l') {
std::string tmp(*PI);
if (*PI == "%llvmgccdir%")
tmp.replace(0,12,LLVMGCCDIR);
else if (*PI == "%llvmgccarch%")
tmp.replace(0,13,LLVMGCCARCH);
else if (*PI == "%llvmgcc%")
tmp.replace(0,9,LLVMGCC);
else if (*PI == "%llvmgxx%")
tmp.replace(0,9,LLVMGXX);
else if (*PI == "%llvmcc1%")
tmp.replace(0,9,LLVMCC1);
else if (*PI == "%llvmcc1plus%")
tmp.replace(0,9,LLVMCC1);
else
found = false;
if (found)
action->args.push_back(tmp);
} else if (*PI == "%libs%") {
PathVector::iterator I = LibraryPaths.begin();
PathVector::iterator E = LibraryPaths.end();
while (I != E) {
action->args.push_back( std::string("-L") + I->toString() );
++I;
}
} else if (*PI == "%libdir%") {
std::string tmp(*PI);
tmp.replace(0,8,LLVM_LIBDIR);
action->args.push_back(tmp);
} else
found = false;
break;
case 'o':
if (*PI == "%out%") {
action->args.push_back(output.toString());
} else if (*PI == "%opt%") {
if (!isSet(EMIT_RAW_FLAG)) {
if (cd->opts.size() > static_cast<unsigned>(optLevel) &&
!cd->opts[optLevel].empty())
action->args.insert(action->args.end(),
cd->opts[optLevel].begin(),
cd->opts[optLevel].end());
else
throw std::string("Optimization options for level ") +
utostr(unsigned(optLevel)) + " were not specified";
}
} else
found = false;
break;
case 's':
if (*PI == "%stats%") {
if (isSet(SHOW_STATS_FLAG))
action->args.push_back("-stats");
} else
found = false;
break;
case 't':
if (*PI == "%target%") {
action->args.push_back(std::string("-march=") + machine);
} else if (*PI == "%time%") {
if (isSet(TIME_PASSES_FLAG))
action->args.push_back("-time-passes");
} else
found = false;
break;
case 'v':
if (*PI == "%verbose%") {
if (isSet(VERBOSE_FLAG))
action->args.push_back("-v");
} else
found = false;
break;
case 'M':
if (*PI == "%Mopts%") {
if (!MOptions.empty())
action->args.insert(action->args.end(), MOptions.begin(),
MOptions.end());
} else
found = false;
break;
case 'W':
if (*PI == "%Wopts%") {
for (StringVector::iterator I = WOptions.begin(),
E = WOptions.end(); I != E ; ++I ) {
action->args.push_back(std::string("-W") + *I);
}
} else
found = false;
break;
default:
found = false;
break;
}
if (!found) {
// Did it even look like a substitution?
if (PI->length()>1 && (*PI)[0] == '%' &&
(*PI)[PI->length()-1] == '%') {
throw std::string("Invalid substitution token: '") + *PI +
"' for command '" + pat->program.toString() + "'";
} else if (!PI->empty()) {
// It's not a legal substitution, just pass it through
action->args.push_back(*PI);
}
}
} else if (!PI->empty()) {
// Its not a substitution, just put it in the action
action->args.push_back(*PI);
}
PI++;
}
// Finally, we're done
return action;
}
int DoAction(Action*action, std::string& ErrMsg) {
assert(action != 0 && "Invalid Action!");
if (isSet(VERBOSE_FLAG))
WriteAction(action);
if (!isSet(DRY_RUN_FLAG)) {
sys::Path progpath = sys::Program::FindProgramByName(
action->program.toString());
if (progpath.isEmpty())
throw std::string("Can't find program '" +
action->program.toString()+"'");
else if (progpath.canExecute())
action->program = progpath;
else
throw std::string("Program '"+action->program.toString()+
"' is not executable.");
// Invoke the program
const char** Args = (const char**)
alloca(sizeof(const char*)*(action->args.size()+2));
Args[0] = action->program.toString().c_str();
for (unsigned i = 1; i <= action->args.size(); ++i)
Args[i] = action->args[i-1].c_str();
Args[action->args.size()+1] = 0; // null terminate list.
if (isSet(TIME_ACTIONS_FLAG)) {
Timer timer(action->program.toString());
timer.startTimer();
int resultCode =
sys::Program::ExecuteAndWait(action->program, Args,0,0,0,0, &ErrMsg);
timer.stopTimer();
timer.print(timer,std::cerr);
return resultCode;
}
else
return
sys::Program::ExecuteAndWait(action->program, Args, 0,0,0,0, &ErrMsg);
}
return 0;
}
/// This method tries various variants of a linkage item's file
/// name to see if it can find an appropriate file to link with
/// in the directories of the LibraryPaths.
llvm::sys::Path GetPathForLinkageItem(const std::string& link_item,
bool native = false) {
sys::Path fullpath;
fullpath.set(link_item);
if (fullpath.canRead())
return fullpath;
for (PathVector::iterator PI = LibraryPaths.begin(),
PE = LibraryPaths.end(); PI != PE; ++PI) {
fullpath.set(PI->toString());
fullpath.appendComponent(link_item);
if (fullpath.canRead())
return fullpath;
if (native) {
fullpath.appendSuffix("a");
} else {
fullpath.appendSuffix("bc");
if (fullpath.canRead())
return fullpath;
fullpath.eraseSuffix();
fullpath.appendSuffix("o");
if (fullpath.canRead())
return fullpath;
fullpath = *PI;
fullpath.appendComponent(std::string("lib") + link_item);
fullpath.appendSuffix("a");
if (fullpath.canRead())
return fullpath;
fullpath.eraseSuffix();
fullpath.appendSuffix("so");
if (fullpath.canRead())
return fullpath;
}
}
// Didn't find one.
fullpath.clear();
return fullpath;
}
/// This method processes a linkage item. The item could be a
/// Bytecode file needing translation to native code and that is
/// dependent on other bytecode libraries, or a native code
/// library that should just be linked into the program.
bool ProcessLinkageItem(const llvm::sys::Path& link_item,
SetVector<sys::Path>& set,
std::string& err) {
// First, see if the unadorned file name is not readable. If so,
// we must track down the file in the lib search path.
sys::Path fullpath;
if (!link_item.canRead()) {
// look for the library using the -L arguments specified
// on the command line.
fullpath = GetPathForLinkageItem(link_item.toString());
// If we didn't find the file in any of the library search paths
// we have to bail. No where else to look.
if (fullpath.isEmpty()) {
err =
std::string("Can't find linkage item '") + link_item.toString() + "'";
return false;
}
} else {
fullpath = link_item;
}
// If we got here fullpath is the path to the file, and its readable.
set.insert(fullpath);
// If its an LLVM bytecode file ...
if (fullpath.isBytecodeFile()) {
// Process the dependent libraries recursively
Module::LibraryListType modlibs;
if (GetBytecodeDependentLibraries(fullpath.toString(),modlibs,
Compressor::decompressToNewBuffer,
&err)) {
// Traverse the dependent libraries list
Module::lib_iterator LI = modlibs.begin();
Module::lib_iterator LE = modlibs.end();
while ( LI != LE ) {
if (!ProcessLinkageItem(sys::Path(*LI),set,err)) {
if (err.empty()) {
err = std::string("Library '") + *LI +
"' is not valid for linking but is required by file '" +
fullpath.toString() + "'";
} else {
err += " which is required by file '" + fullpath.toString() + "'";
}
return false;
}
++LI;
}
} else if (err.empty()) {
err = std::string(
"The dependent libraries could not be extracted from '") +
fullpath.toString();
return false;
} else
return false;
}
return true;
}
/// @}
/// @name Methods
/// @{
public:
virtual int execute(const InputList& InpList, const sys::Path& Output, std::string& ErrMsg ) {
try {
// Echo the configuration of options if we're running verbose
if (isSet(DEBUG_FLAG)) {
std::cerr << "Compiler Driver Options:\n";
std::cerr << "DryRun = " << isSet(DRY_RUN_FLAG) << "\n";
std::cerr << "Verbose = " << isSet(VERBOSE_FLAG) << " \n";
std::cerr << "TimeActions = " << isSet(TIME_ACTIONS_FLAG) << "\n";
std::cerr << "TimePasses = " << isSet(TIME_PASSES_FLAG) << "\n";
std::cerr << "ShowStats = " << isSet(SHOW_STATS_FLAG) << "\n";
std::cerr << "EmitRawCode = " << isSet(EMIT_RAW_FLAG) << "\n";
std::cerr << "EmitNativeCode = " << isSet(EMIT_NATIVE_FLAG) << "\n";
std::cerr << "KeepTemps = " << isSet(KEEP_TEMPS_FLAG) << "\n";
std::cerr << "OutputMachine = " << machine << "\n";
InputList::const_iterator I = InpList.begin();
while ( I != InpList.end() ) {
std::cerr << "Input: " << I->first << "(" << I->second
<< ")\n";
++I;
}
std::cerr << "Output: " << Output << "\n";
}
// If there's no input, we're done.
if (InpList.empty())
throw std::string("Nothing to compile.");
// If they are asking for linking and didn't provide an output
// file then its an error (no way for us to "make up" a meaningful
// file name based on the various linker input files).
if (finalPhase == LINKING && Output.isEmpty())
throw std::string(
"An output file name must be specified for linker output");
// If they are not asking for linking, provided an output file and
// there is more than one input file, its an error
if (finalPhase != LINKING && !Output.isEmpty() && InpList.size() > 1)
throw std::string("An output file name cannot be specified ") +
"with more than one input file name when not linking";
// This vector holds all the resulting actions of the following loop.
std::vector<Action*> actions;
/// PRE-PROCESSING / TRANSLATION / OPTIMIZATION / ASSEMBLY phases
// for each input item
SetVector<sys::Path> LinkageItems;
StringVector LibFiles;
InputList::const_iterator I = InpList.begin();
for (InputList::const_iterator I = InpList.begin(), E = InpList.end();
I != E; ++I ) {
// Get the suffix of the file name
const std::string& ftype = I->second;
// If its a library, bytecode file, or object file, save
// it for linking below and short circuit the
// pre-processing/translation/assembly phases
if (ftype.empty() || ftype == "o" || ftype == "bc" || ftype=="a") {
// We shouldn't get any of these types of files unless we're
// later going to link. Enforce this limit now.
if (finalPhase != LINKING) {
throw std::string(
"Pre-compiled objects found but linking not requested");
}
if (ftype.empty())
LibFiles.push_back(I->first.toString());
else
LinkageItems.insert(I->first);
continue; // short circuit remainder of loop
}
// At this point, we know its something we need to translate
// and/or optimize. See if we can get the configuration data
// for this kind of file.
ConfigData* cd = cdp->ProvideConfigData(I->second);
if (cd == 0)
throw std::string("Files of type '") + I->second +
"' are not recognized.";
if (isSet(DEBUG_FLAG))
DumpConfigData(cd,I->second);
// Add the config data's library paths to the end of the list
for (StringVector::iterator LPI = cd->libpaths.begin(),
LPE = cd->libpaths.end(); LPI != LPE; ++LPI){
LibraryPaths.push_back(sys::Path(*LPI));
}
// Initialize the input and output files
sys::Path InFile(I->first);
sys::Path OutFile(I->first.getBasename());
// PRE-PROCESSING PHASE
Action& action = cd->PreProcessor;
// Get the preprocessing action, if needed, or error if appropriate
if (!action.program.isEmpty()) {
if (action.isSet(REQUIRED_FLAG) || finalPhase == PREPROCESSING) {
if (finalPhase == PREPROCESSING) {
if (Output.isEmpty()) {
OutFile.appendSuffix("E");
actions.push_back(GetAction(cd,InFile,OutFile,PREPROCESSING));
} else {
actions.push_back(GetAction(cd,InFile,Output,PREPROCESSING));
}
} else {
sys::Path TempFile(
MakeTempFile(I->first.getBasename(),"E",&ErrMsg));
if (TempFile.isEmpty())
return 1;
actions.push_back(GetAction(cd,InFile,TempFile,
PREPROCESSING));
InFile = TempFile;
}
}
} else if (finalPhase == PREPROCESSING) {
throw cd->langName + " does not support pre-processing";
} else if (action.isSet(REQUIRED_FLAG)) {
throw std::string("Don't know how to pre-process ") +
cd->langName + " files";
}
// Short-circuit remaining actions if all they want is
// pre-processing
if (finalPhase == PREPROCESSING) { continue; };
/// TRANSLATION PHASE
action = cd->Translator;
// Get the translation action, if needed, or error if appropriate
if (!action.program.isEmpty()) {
if (action.isSet(REQUIRED_FLAG) || finalPhase == TRANSLATION) {
if (finalPhase == TRANSLATION) {
if (Output.isEmpty()) {
OutFile.appendSuffix("o");
actions.push_back(GetAction(cd,InFile,OutFile,TRANSLATION));
} else {
actions.push_back(GetAction(cd,InFile,Output,TRANSLATION));
}
} else {
sys::Path TempFile(
MakeTempFile(I->first.getBasename(),"trans", &ErrMsg));
if (TempFile.isEmpty())
return 1;
actions.push_back(GetAction(cd,InFile,TempFile,TRANSLATION));
InFile = TempFile;
}
// ll -> bc Helper
if (action.isSet(OUTPUT_IS_ASM_FLAG)) {
/// The output of the translator is an LLVM Assembly program
/// We need to translate it to bytecode
Action* action = new Action();
action->program.set("llvm-as");
action->args.push_back(InFile.toString());
action->args.push_back("-o");
InFile.appendSuffix("bc");
action->args.push_back(InFile.toString());
actions.push_back(action);
}
}
} else if (finalPhase == TRANSLATION) {
throw cd->langName + " does not support translation";
} else if (action.isSet(REQUIRED_FLAG)) {
throw std::string("Don't know how to translate ") +
cd->langName + " files";
}
// Short-circuit remaining actions if all they want is translation
if (finalPhase == TRANSLATION) { continue; }
/// OPTIMIZATION PHASE
action = cd->Optimizer;
// Get the optimization action, if needed, or error if appropriate
if (!isSet(EMIT_RAW_FLAG)) {
if (!action.program.isEmpty()) {
if (action.isSet(REQUIRED_FLAG) || finalPhase == OPTIMIZATION) {
if (finalPhase == OPTIMIZATION) {
if (Output.isEmpty()) {
OutFile.appendSuffix("o");
actions.push_back(GetAction(cd,InFile,OutFile,OPTIMIZATION));
} else {
actions.push_back(GetAction(cd,InFile,Output,OPTIMIZATION));
}
} else {
sys::Path TempFile(
MakeTempFile(I->first.getBasename(),"opt", &ErrMsg));
if (TempFile.isEmpty())
return 1;
actions.push_back(GetAction(cd,InFile,TempFile,OPTIMIZATION));
InFile = TempFile;
}
// ll -> bc Helper
if (action.isSet(OUTPUT_IS_ASM_FLAG)) {
/// The output of the optimizer is an LLVM Assembly program
/// We need to translate it to bytecode with llvm-as
Action* action = new Action();
action->program.set("llvm-as");
action->args.push_back(InFile.toString());
action->args.push_back("-f");
action->args.push_back("-o");
InFile.appendSuffix("bc");
action->args.push_back(InFile.toString());
actions.push_back(action);
}
}
} else if (finalPhase == OPTIMIZATION) {
throw cd->langName + " does not support optimization";
} else if (action.isSet(REQUIRED_FLAG)) {
throw std::string("Don't know how to optimize ") +
cd->langName + " files";
}
}
// Short-circuit remaining actions if all they want is optimization
if (finalPhase == OPTIMIZATION) { continue; }
/// ASSEMBLY PHASE
action = cd->Assembler;
if (finalPhase == ASSEMBLY) {
// Build either a native compilation action or a disassembly action
Action* action = new Action();
if (isSet(EMIT_NATIVE_FLAG)) {
// Use llc to get the native assembly file
action->program.set("llc");
action->args.push_back(InFile.toString());
action->args.push_back("-f");
action->args.push_back("-o");
if (Output.isEmpty()) {
OutFile.appendSuffix("o");
action->args.push_back(OutFile.toString());
} else {
action->args.push_back(Output.toString());
}
actions.push_back(action);
} else {
// Just convert back to llvm assembly with llvm-dis
action->program.set("llvm-dis");
action->args.push_back(InFile.toString());
action->args.push_back("-f");
action->args.push_back("-o");
if (Output.isEmpty()) {
OutFile.appendSuffix("ll");
action->args.push_back(OutFile.toString());
} else {
action->args.push_back(Output.toString());
}
}
// Put the action on the list
actions.push_back(action);
// Short circuit the rest of the loop, we don't want to link
continue;
}
// Register the result of the actions as a link candidate
LinkageItems.insert(InFile);
} // end while loop over each input file
/// RUN THE COMPILATION ACTIONS
std::vector<Action*>::iterator AI = actions.begin();
std::vector<Action*>::iterator AE = actions.end();
while (AI != AE) {
int ActionResult = DoAction(*AI, ErrMsg);
if (ActionResult != 0)
return ActionResult;
AI++;
}
/// LINKING PHASE
if (finalPhase == LINKING) {
// Insert the platform-specific system libraries to the path list
std::vector<sys::Path> SysLibs;
sys::Path::GetSystemLibraryPaths(SysLibs);
LibraryPaths.insert(LibraryPaths.end(), SysLibs.begin(), SysLibs.end());
// Set up the linking action with llvm-ld
Action* link = new Action();
link->program.set("llvm-ld");
// Add in the optimization level requested
switch (optLevel) {
case OPT_FAST_COMPILE:
link->args.push_back("-O1");
break;
case OPT_SIMPLE:
link->args.push_back("-O2");
break;
case OPT_AGGRESSIVE:
link->args.push_back("-O3");
break;
case OPT_LINK_TIME:
link->args.push_back("-O4");
break;
case OPT_AGGRESSIVE_LINK_TIME:
link->args.push_back("-O5");
break;
case OPT_NONE:
break;
}
// Add in all the linkage items we generated. This includes the
// output from the translation/optimization phases as well as any
// -l arguments specified.
for (PathVector::const_iterator I=LinkageItems.begin(),
E=LinkageItems.end(); I != E; ++I )
link->args.push_back(I->toString());
// Add in all the libraries we found.
for (StringVector::const_iterator I=LibFiles.begin(),
E=LibFiles.end(); I != E; ++I )
link->args.push_back(std::string("-l")+*I);
// Add in all the library paths to the command line
for (PathVector::const_iterator I=LibraryPaths.begin(),
E=LibraryPaths.end(); I != E; ++I)
link->args.push_back( std::string("-L") + I->toString());
// Add in the additional linker arguments requested
for (StringVector::const_iterator I=AdditionalArgs[LINKING].begin(),
E=AdditionalArgs[LINKING].end(); I != E; ++I)
link->args.push_back( *I );
// Add in other optional flags
if (isSet(EMIT_NATIVE_FLAG))
link->args.push_back("-native");
if (isSet(VERBOSE_FLAG))
link->args.push_back("-v");
if (isSet(TIME_PASSES_FLAG))
link->args.push_back("-time-passes");
if (isSet(SHOW_STATS_FLAG))
link->args.push_back("-stats");
if (isSet(STRIP_OUTPUT_FLAG))
link->args.push_back("-s");
if (isSet(DEBUG_FLAG)) {
link->args.push_back("-debug");
link->args.push_back("-debug-pass=Details");
}
// Add in mandatory flags
link->args.push_back("-o");
link->args.push_back(Output.toString());
// Execute the link
int ActionResult = DoAction(link, ErrMsg);
if (ActionResult != 0)
return ActionResult;
}
} catch (std::string& msg) {
cleanup();
throw;
} catch (...) {
cleanup();
throw std::string("Unspecified error");
}
cleanup();
return 0;
}
/// @}
/// @name Data
/// @{
private:
ConfigDataProvider* cdp; ///< Where we get configuration data from
Phases finalPhase; ///< The final phase of compilation
OptimizationLevels optLevel; ///< The optimization level to apply
unsigned Flags; ///< The driver flags
std::string machine; ///< Target machine name
PathVector LibraryPaths; ///< -L options
PathVector IncludePaths; ///< -I options
PathVector ToolPaths; ///< -B options
StringVector Defines; ///< -D options
sys::Path TempDir; ///< Name of the temporary directory.
StringTable AdditionalArgs; ///< The -Txyz options
StringVector fOptions; ///< -f options
StringVector MOptions; ///< -M options
StringVector WOptions; ///< -W options
/// @}
};
}
CompilerDriver::~CompilerDriver() {
}
CompilerDriver::ConfigDataProvider::~ConfigDataProvider() {}
CompilerDriver*
CompilerDriver::Get(ConfigDataProvider& CDP) {
return new CompilerDriverImpl(CDP);
}
CompilerDriver::ConfigData::ConfigData()
: langName()
, PreProcessor()
, Translator()
, Optimizer()
, Assembler()
, Linker()
{
StringVector emptyVec;
for (unsigned i = 0; i < NUM_PHASES; ++i)
opts.push_back(emptyVec);
}
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