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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 <iostream>
using namespace llvm;
namespace {
inline std::string RemoveSuffix(const std::string& fullName) {
size_t dotpos = fullName.rfind('.',fullName.size());
if ( dotpos == std::string::npos ) return fullName;
return fullName.substr(0, dotpos);
}
inline std::string GetSuffix(const std::string& fullName) {
size_t dotpos = fullName.rfind('.',fullName.size());
if ( dotpos = std::string::npos ) return "";
return fullName.substr(dotpos+1);
}
const char OutputSuffix[] = ".o";
}
CompilerDriver::CompilerDriver(ConfigDataProvider& confDatProv )
: cdp(&confDatProv)
, finalPhase(LINKING)
, optLevel(OPT_FAST_COMPILE)
, isDryRun(false)
, isVerbose(false)
, isDebug(false)
, timeActions(false)
, emitRawCode(false)
, emitNativeCode(false)
, machine()
, libPaths()
{
// FIXME: These libraries are platform specific
libPaths.push_back("/lib");
libPaths.push_back("/usr/lib");
}
CompilerDriver::~CompilerDriver() {
cdp = 0;
libPaths.clear();
}
void CompilerDriver::error( const std::string& errmsg ) {
std::cerr << "Error: " << errmsg << ".\n";
exit(1);
}
CompilerDriver::Action* CompilerDriver::GetAction(ConfigData* cd,
const std::string& input,
const std::string& output,
Phases phase)
{
Action* pat = 0;
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");
Action* a = new Action(*pat);
a->args[pat->inputAt] = input;
a->args[pat->outputAt] = output;
return a;
}
void CompilerDriver::WriteAction(Action* a) {
std::cerr << a->program;
std::vector<std::string>::iterator I = a->args.begin();
while (I != a->args.end()) {
std::cerr << " " + *I;
++I;
}
std::cerr << "\n";
}
void CompilerDriver::DoAction(Action*a)
{
if (isVerbose)
WriteAction(a);
if (!isDryRun) {
std::cerr << "execve(\"" << a->program << "\",[\n";
std::vector<std::string>::iterator I = a->args.begin();
while (I != a->args.end()) {
std::cerr << " \"" << *I << "\",\n";
++I;
}
std::cerr << "],ENV);\n";
}
}
int CompilerDriver::execute(const InputList& InpList,
const std::string& Output ) {
// Echo the configuration of options if we're running verbose
if (isDebug)
{
std::cerr << "Compiler Driver Options:\n";
std::cerr << "DryRun = " << isDryRun << "\n";
std::cerr << "Verbose = " << isVerbose << " \n";
std::cerr << "TimeActions = " << timeActions << "\n";
std::cerr << "EmitRawCode = " << emitRawCode << "\n";
std::cerr << "OutputMachine = " << machine << "\n";
std::cerr << "EmitNativeCode = " << emitNativeCode << "\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())
error("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.empty())
error("An output file name must be specified for linker output");
std::vector<Action*> actions;
/// PRE-PROCESSING / TRANSLATION / OPTIMIZATION / ASSEMBLY phases
// for each input item
std::vector<std::string> LinkageItems;
InputList::const_iterator I = InpList.begin();
while ( I != InpList.end() ) {
// Get the suffix of the file name
std::string suffix = GetSuffix(I->first);
// If its a library, bytecode file, or object file, save
// it for linking below and short circuit the
// pre-processing/translation/assembly phases
if (I->second.empty() || suffix == "o" || suffix == "bc") {
// We shouldn't get any of these types of files unless we're
// later going to link. Enforce this limit now.
if (finalPhase != LINKING) {
error("Pre-compiled objects found but linking not requested");
}
LinkageItems.push_back(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)
error(std::string("Files of type '") + I->second +
"' are not recognized." );
// We have valid configuration data, now figure out where the output
// of compilation should end up.
std::string OutFile;
if (finalPhase != LINKING) {
if (InpList.size() == 1 && !Output.empty())
OutFile = Output;
else
OutFile = RemoveSuffix(I->first) + OutputSuffix;
} else {
OutFile = Output;
}
/// PRE-PROCESSING PHASE
if (finalPhase == PREPROCESSING) {
if (cd->PreProcessor.program.empty())
error(cd->langName + " does not support pre-processing");
else
actions.push_back(GetAction(cd,I->first,OutFile,PREPROCESSING));
} else if (cd->PreprocessorNeeded && !cd->TranslatorPreprocesses) {
if (!cd->PreProcessor.program.empty()) {
actions.push_back(GetAction(cd,I->first,OutFile,PREPROCESSING));
}
}
// Short-circuit remaining actions if all they want is pre-processing
if (finalPhase == PREPROCESSING) { ++I; continue; };
/// TRANSLATION PHASE
actions.push_back(GetAction(cd,I->first,OutFile,TRANSLATION));
// Short-circuit remaining actions if all they want is translation
if (finalPhase == TRANSLATION) { ++I; continue; }
/// OPTIMIZATION PHASE
actions.push_back(GetAction(cd,I->first,OutFile,OPTIMIZATION));
// Short-circuit remaining actions if all they want is optimization
if (finalPhase == OPTIMIZATION) { ++I; continue; }
++I;
}
/// LINKING PHASE
/// RUN THE ACTIONS
std::vector<Action*>::iterator aIter = actions.begin();
while (aIter != actions.end()) {
DoAction(*aIter);
aIter++;
}
return 0;
}
// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
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