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Move code to initialize LLVM to one place. 

llvm-svn: 265235
This commit is contained in:
Rui Ueyama 2016-04-02 18:18:44 +00:00
parent bfc1d9d976
commit 1fc5d48877
1 changed files with 19 additions and 12 deletions
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31
lld/ELF/Driver.cpp
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@ -142,6 +142,24 @@ void LinkerDriver::addLibrary(StringRef Name) {
addFile(Path);
}
// This function is called on startup. We need this for LTO since
// LTO calls LLVM functions to compile bitcode files to native code.
// Technically this can be delayed until we read bitcode files, but
// we don't bother to do lazily because the initialization is fast.
static void initLLVM(opt::InputArgList &Args) {
InitializeAllTargets();
InitializeAllTargetMCs();
InitializeAllAsmPrinters();
InitializeAllAsmParsers();
// Parse and evaluate -mllvm options.
std::vector<const char *> V;
V.push_back("lld (LLVM option parsing)");
for (auto *Arg : Args.filtered(OPT_mllvm))
V.push_back(Arg->getValue());
cl::ParseCommandLineOptions(V.size(), V.data());
}
// Some command line options or some combinations of them are not allowed.
// This function checks for such errors.
static void checkOptions(opt::InputArgList &Args) {
@ -205,6 +223,7 @@ void LinkerDriver::main(ArrayRef<const char *> ArgsArr) {
return;
}
initLLVM(Args);
readConfigs(Args);
createFiles(Args);
checkOptions(Args);
@ -308,12 +327,6 @@ void LinkerDriver::readConfigs(opt::InputArgList &Args) {
for (auto *Arg : Args.filtered(OPT_undefined))
Config->Undefined.push_back(Arg->getValue());
std::vector<const char *> Argv;
Argv.push_back("lld (LLVM option parsing)");
for (auto *Arg : Args.filtered(OPT_mllvm))
Argv.push_back(Arg->getValue());
cl::ParseCommandLineOptions(Argv.size(), Argv.data());
}
void LinkerDriver::createFiles(opt::InputArgList &Args) {
@ -360,12 +373,6 @@ template <class ELFT> static void initSymbols() {
}
template <class ELFT> void LinkerDriver::link(opt::InputArgList &Args) {
// For LTO
InitializeAllTargets();
InitializeAllTargetMCs();
InitializeAllAsmPrinters();
InitializeAllAsmParsers();
initSymbols<ELFT>();
SymbolTable<ELFT> Symtab;