Dan Gohman d8e0c0438a Really check that the bits that will become zero are actually already zero
before eliminating the operation that zeros them. This fixes rdar://8739316.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121353 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-09 02:52:17 +00:00
..
2010-11-30 23:25:01 +00:00
2010-11-27 04:00:06 +00:00
2010-08-29 14:49:00 +00:00