Owen Anderson 6186c96765 When folding away a (shl (shr)) pair, we need to check that the bits that will BECOME the low
bits are zero, not that the current low bits are zero.  Fixes <rdar://problem/8606771>.

llvm-svn: 117953
2010-11-01 21:08:20 +00:00
..
2010-07-12 14:15:58 +00:00
2010-10-23 17:10:24 +00:00