Revert "InstCombine: Reduce trunc (shl x, K) width."

This reverts commit r272987.

This might be causing crashes on some bots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@272990 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed