Justin Bogner a393b70886 Revert "TableGen: Switch from a std::map to a DenseMap in CodeGenSubRegIndex. NFC"
It turns out we iterate over this map a fair amount and the order
matters for clang to be deterministic. See:

  http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20160919/391315.html

This reverts r279875.

llvm-svn: 282040
2016-09-21 00:25:45 +00:00
..
2016-08-11 21:14:05 +00:00