CodeGenPrepare: Don't match addressing modes through addrspacecast

This was resulting in the addrspacecast being removed and incorrectly
replaced with a ptrtoint when sinking.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238217 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed