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#include <iostream>
#ifdef _MSC_VER
#include "getopt.h"
#else
#include <unistd.h>
#endif
#include <llvm/IR/LegacyPassManager.h>
#include <llvm/IR/Verifier.h>
#include <llvm/Support/TargetRegistry.h>
#include <llvm/Support/TargetSelect.h>
#include <llvm/Target/TargetMachine.h>
#include "AsciiTraveler.hh"
#include "Driver.hh"
#include "Log.hh"
#include "Version.hh"
void compile(llvm::Module* module, llvm::raw_pwrite_stream& output,
llvm::CodeGenFileType type, llvm::TargetMachine* machine);
int main(int argc, char* argv[]) {
int rv;
int level = pcc::ToUnderlying(pcc::PCC_WARNING);
std::string OutputFileName;
enum { IR, ASSEMBLY, OBJECT } CompileType = IR;
int OptLevel = 2;
bool AsciiTravel = false;
pcc::SetExecutableName(argv[0]);
while ((rv = getopt(argc, argv, "vVhiScao:O:")) != -1) {
switch (rv) {
case 'v':
level = (level == 0 ? 0 : level - 1);
break;
case 'V':
pcc::ShowVersion();
case 'h':
pcc::ShowHelp();
case 'i':
CompileType = IR;
break;
case 'S':
CompileType = ASSEMBLY;
break;
case 'c':
CompileType = OBJECT;
break;
case 'a':
AsciiTravel = true;
break;
case 'o':
OutputFileName = optarg;
break;
case 'O':
OptLevel = optarg[0] - '0';
if (OptLevel > 3 || OptLevel < 0) {
pcc::Log(pcc::PCC_ERROR, "%c is not a valid optimization level",
optarg[0]);
pcc::ShowHelp();
}
break;
default:
pcc::Log(pcc::PCC_ERROR, "unknown option");
pcc::ShowHelp();
}
}
pcc::SetLogLevel(static_cast<pcc::LogLevel>(level));
llvm::InitializeNativeTarget();
llvm::InitializeNativeTargetAsmParser();
llvm::InitializeNativeTargetAsmPrinter();
std::string triple = llvm::sys::getDefaultTargetTriple();
std::string error;
const llvm::Target* target =
llvm::TargetRegistry::lookupTarget(triple, error);
if (!error.empty()) {
pcc::Log(pcc::PCC_ERROR,
"failed to find target with triple %s, reason %s",
triple.c_str(), error.c_str());
return -1;
}
const llvm::CodeGenOpt::Level optimization[] = {
llvm::CodeGenOpt::None, llvm::CodeGenOpt::Less,
llvm::CodeGenOpt::Default, llvm::CodeGenOpt::Aggressive};
std::string cpu = "generic";
std::string features = "";
llvm::TargetOptions options;
llvm::TargetMachine* machine =
target->createTargetMachine(triple, cpu, features, options, llvm::None,
llvm::None, optimization[OptLevel]);
llvm::DataLayout layout = machine->createDataLayout();
if (optind >= argc) {
pcc::Log(pcc::PCC_ERROR, "no input file specified");
return -1;
}
if (!OutputFileName.empty() && optind != argc - 1) {
pcc::Log(pcc::PCC_WARNING,
"more than one source file specified, the output file name "
"will be ignored");
OutputFileName.clear();
}
for (int i = optind; i < argc; i++) {
pcc::Driver driver(argv[i]);
llvm::Module* module = driver.GetContext()->GetModule();
module->setTargetTriple(triple);
module->setDataLayout(layout);
std::string filename(argv[i]);
std::shared_ptr<pcc::ProgramNode> root = driver.Parse(filename);
if (root != nullptr) {
root->CodeGen();
std::string msg;
llvm::raw_string_ostream MsgStream(msg);
llvm::verifyModule(*module, &MsgStream);
MsgStream.flush();
if (!msg.empty()) {
pcc::Log(pcc::PCC_WARNING, "%s", msg.c_str());
}
} else {
continue;
}
if (OutputFileName.empty()) {
const char* postfix[] = {".ll", ".s", ".o"};
size_t PostfixPos = filename.rfind(".pas");
if (PostfixPos == std::string::npos) {
OutputFileName = filename + postfix[CompileType];
} else {
OutputFileName =
filename.substr(0, PostfixPos) + postfix[CompileType];
}
}
std::error_code ErrorCode;
llvm::raw_fd_ostream output(OutputFileName, ErrorCode);
switch (CompileType) {
case IR:
module->print(output, nullptr);
break;
case ASSEMBLY:
compile(module, output, llvm::CGFT_AssemblyFile, machine);
break;
case OBJECT:
compile(module, output, llvm::CGFT_ObjectFile, machine);
break;
default:
break;
}
pcc::Log(pcc::PCC_INFO, "%s compiled to %s", argv[i],
OutputFileName.c_str());
OutputFileName.clear();
if (AsciiTravel == true) {
pcc::Log(pcc::PCC_INFO, "dumping abstract syntax tree of %s",
argv[i]);
pcc::AsciiTraveler traveler(std::cerr);
root->Travel(traveler);
}
}
return 0;
}
void compile(llvm::Module* module, llvm::raw_pwrite_stream& output,
llvm::CodeGenFileType type, llvm::TargetMachine* machine) {
llvm::legacy::PassManager manager;
machine->addPassesToEmitFile(manager, output, nullptr, type);
manager.run(*module);
}
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