Chris Lattner e42eb31f7d Just because we cannot completely eliminate all uses of a global, we can
still optimize away all of the indirect calls and loads, etc from it.
This turns code like this:

  if (G != 0)
    G();

into
   if (G != 0)
     ActualCallee();

This triggers a couple of times in gcc and libstdc++.

llvm-svn: 16901
2004-10-10 23:14:11 +00:00
..
2004-09-20 04:43:57 +00:00