[llvm] [FMF] Set all bits if needed when setting individual flags. (PR #131321)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

It looks like the current code tries to make a distinction between "fast" and "all bits set individual" from a bitcode upgrade perspective? I think if we're going to change that, it would be better to drop the special -1 value for fast and make it actually equivalent to "all bits set".

https://github.com/llvm/llvm-project/pull/131321