Andrew Trick 8de329a9fc LSR should avoid redundant edge splitting.
This handles the case in which LSR rewrites an IV user that is a phi and
splits critical edges originating from a switch.
Fixes <rdar://problem/6453893> LSR is not splitting edges "nicely"

llvm-svn: 141059
2011-10-04 03:50:44 +00:00
..
2010-04-07 22:53:17 +00:00
2010-01-19 21:51:51 +00:00