[flang] [clang] [flang] Enable alias tags pass by default (PR #73111)

[Andrzej Warzyński via cfe-commits]

https://github.com/banach-space commented:

Nice!

> Enable by default when optimizing for speed.

Please, can you be more specific and define what qualifies as "optimizing for speed"?

https://github.com/llvm/llvm-project/pull/73111