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llvm/tools/llvmc/CompilerDriver.cpp
Reid Spencer 3ed469ccd7 For PR786: 
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-02 20:25:50 +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);
}
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,&ErrMsg);
timer.stopTimer();
timer.print(timer,std::cerr);
return resultCode;
}
else
return
sys::Program::ExecuteAndWait(action->program, Args, 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,&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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