x86 has eight instructions that are non-temporal.
Only one of which is a load-NT.
Adds a memory access type classification to our LoadSource/StoreResult
helpers.
This lets us explicitly choose Default, TSO, NonTSO, and Stream.
Stream currently just behaves like NonTSO so at some point in the future
we can add non-temporal loadstores to the IR.
Main thing is to move these NT accesses to non-TSO.
Ryan Houdek
4d24b85d57