…s we need to propagate largeness from destination to source operand

Scope: Fixes a compiler crash in some version of swift-collections
Issue: An instruction whose result type address'ness needs to be
propagated to its operand was not handled.
Risk: Low, this case would have crashed without the change.
Testing: Unit test added. The compiler successfully compiled the project
after this change.
Original PR: swiftlang#80888

rdar://148545382
(cherry picked from commit 370b7e8)