title: Does clang support "-fprofile-generate" and "-fprofile-use"?
body: <p>I am using 3.5 and it doesn't seem to be in there... Am I missing something?</p>
  
  <p>For example, with GCC I can compile a program like this:</p>
  
  <pre><code>gcc -fprofile-generate main.cpp
  </code></pre>
  
  <p>...then I run the program, and after it exits (gracefully) it will generate a set of files (extensions are .gcda I think).  These files contain branching results that can be used to do profile-based optimization like this:</p>
  
  <pre><code>gcc -fprofile-use main.cpp
  </code></pre>
  
  <p>Is there a similar feature in Clang that I have overlooked?</p>
  
  <p>Thanks!</p>