Richard Smith 937a1cfdad Avoid undefined behavior in DenseMap::shrink_and_clear(). Log2_32_Ceil(0)
returns 32. This change mirrors the corresponding code in
SmallDenseMap::shrink_and_clear().

llvm-svn: 161829
2012-08-14 02:56:51 +00:00
..
2012-08-10 18:30:44 +00:00