Alexey Bataev 022cc6c41e [SLP] Fix crash on propagate IR flags for undef operands of min/max
reductions.

If both operands of the newly created SelectInst are Undefs the
resulting operation is also Undef, not SelectInst. It may cause crashes
when trying to propagate IR flags because function expects exactly
SelectInst instruction, nothing else.

llvm-svn: 314323
2017-09-27 17:42:49 +00:00
..
2017-06-30 07:09:08 +00:00