Esempi in C++ (Cpp) per CodeGen::CreateAShr

Esempio n. 1

File: sorter.cpp Progetto: cmu-db/peloton

llvm::Value *Sorter::NumTuples(CodeGen &codegen,
                               llvm::Value *sorter_ptr) const {
  // Pull out start and end (char **)
  auto *start = codegen.Load(SorterProxy::tuples_start, sorter_ptr);
  auto *end = codegen.Load(SorterProxy::tuples_end, sorter_ptr);

  // Convert both to uint64_t
  start = codegen->CreatePtrToInt(start, codegen.Int64Type());
  end = codegen->CreatePtrToInt(end, codegen.Int64Type());

  // Subtract (end - start)
  auto *diff = codegen->CreateSub(end, start);

  // Divide by pointer size (diff >> 3, or div / 8)
  return codegen->CreateAShr(diff, 3, "numTuples", true);
}