Revert "Claim NoAlias if two GEPs index different fields of the same struct"

This reverts commit 2d5d6493f43eb68493a3852b8c226ac9fafdc7eb.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@271422 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed