title: clang -S -emit-llvm and then compile
body: <p>I want to get exe with clang and llvm with two ways:</p>
  
  <ol>
  <li>clang -O2 1.c -o 1.exe</li>
  <li>clang -S -emit-llvm 1.c <br>
  llc 1.ll -filetype=obj<br>
  link 1.obj -defaultlib: ??? (MSVCRT or libcmt)</li>
  </ol>
  
  <p>but exe files will different and first exe will faster, how to do it equal?
  Or how to see what clang use like defaultlib?</p>
  
  <p>hard: windows 64.</p>