Make use of IRBuilder::CreateAlignedLoad and IRBuilder::CreateAlignedStore
Make use of IRBuilder::CreateAlignedLoad and IRBuilder::CreateAlignedStore

Also use typed variants of these Create functions, because the untyped
variants will be deprecated and removed at some point.

GPUOpen-Drivers/llpc,googlestadia/llpc,GPUOpen-Drivers/llpc,googlestadia/llpc,GPUOpen-Drivers/llpc,googlestadia/llpc,GPUOpen-Drivers/llpc,GPUOpen-Drivers/llpc,googlestadia/llpc,googlestadia/llpc