Revert "[PatternMatch] Switch to use ValueTracking::matchSelectPattern"

This was breaking the modules build and is being reverted while we reach consensus on the right way to solve this layering problem. This reverts commit r251785.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@252040 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed