Peter Collingbourne 2a3443c7c5 GVN: If a branch has two identical successors, we cannot declare either dead.
This previously caused miscompilations as a result of phi nodes receiving
undef incoming values from blocks dominated by such successors.

Differential Revision: http://reviews.llvm.org/D10726

llvm-svn: 240670
2015-06-25 18:32:02 +00:00
..
2013-11-11 22:00:23 +00:00