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#include <llvm/MC/MCSubtargetInfo.h>
#include <llvm/MC/TargetRegistry.h>
#include <llvm/Support/raw_ostream.h>
#include <llvm/ADT/ArrayRef.h>
#include <llvm/Support/InitLLVM.h>
#include <llvm/Support/TargetSelect.h>
// Dumps the default set of supported features for the given microarch.
int main(int argc, char **argv) {
if (argc < 3) {
llvm::errs() << "Error: first arg should be triple, second should be microarch\n";
return 1;
}
llvm::InitializeAllTargets();
llvm::InitializeAllTargetMCs();
std::string error;
const llvm::Target* target = llvm::TargetRegistry::lookupTarget(argv[1], error);
if (!target) {
llvm::errs() << "Error: " << error << "\n";
return 1;
}
auto STI = target->createMCSubtargetInfo(argv[1], argv[2], "");
std::string plus = "+";
llvm::ArrayRef<llvm::SubtargetFeatureKV> features = STI->getAllProcessorFeatures();
for (const auto& feature : features) {
if (STI->checkFeatures(plus + feature.Key)) {
llvm::outs() << feature.Key << "\n";
}
}
return 0;
}
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