Make NaryReassociate pass the address space to isLegalAddressingMode

No test since the kinds of transforms this prevents seem to not really
be relevant for SI's different addressing modes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239261 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed