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Make llvm-link behave a bit more like LTO.

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* Read modules lazily
* Don't treat the first file specially, instead merge all inputs into an empty
  module.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220501 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-10-23 19:40:45 +00:00
parent a1afbd6421
commit e37b00e50b
1 changed files with 5 additions and 13 deletions
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18
tools/llvm-link/llvm-link.cpp
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@ -62,7 +62,7 @@ static std::unique_ptr<Module>
loadFile(const char *argv0, const std::string &FN, LLVMContext &Context) {
SMDiagnostic Err;
if (Verbose) errs() << "Loading '" << FN << "'\n";
std::unique_ptr<Module> Result = parseIRFile(FN, Err, Context);
std::unique_ptr<Module> Result = getLazyIRFileModule(FN, Err, Context);
if (!Result)
Err.print(argv0, errs());
@ -78,19 +78,11 @@ int main(int argc, char **argv) {
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");
unsigned BaseArg = 0;
std::string ErrorMessage;
std::unique_ptr<Module> Composite =
loadFile(argv[0], InputFilenames[BaseArg], Context);
if (!Composite.get()) {
errs() << argv[0] << ": error loading file '"
<< InputFilenames[BaseArg] << "'\n";
return 1;
}
auto Composite = make_unique<Module>("llvm-link", Context);
Linker L(Composite.get(), SuppressWarnings);
for (unsigned i = BaseArg+1; i < InputFilenames.size(); ++i) {
std::string ErrorMessage;
for (unsigned i = 0; i < InputFilenames.size(); ++i) {
std::unique_ptr<Module> M = loadFile(argv[0], InputFilenames[i], Context);
if (!M.get()) {
errs() << argv[0] << ": error loading file '" <<InputFilenames[i]<< "'\n";