DAGCombiner: fix combine of trunc and select

bugzilla:
https://llvm.org/bugs/show_bug.cgi?id=29002
pr29002

Differential Revision: https://reviews.llvm.org/D26449


 



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286938 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed