Richard Guenther <richard.guent...@gmail.com> writes: > Or go one step further and deprecate local register variables alltogether > (they IMHO don't make much sense, and rather the targets should provide > a way to properly constrain asm inputs and outputs).
No, local register variables are documented as working and many programs rely on them. They are a straightforward way to get an asm argument in a specific register, and I don't see any reason to break that. > I suggest to amend the documentation for local call-clobbered register > variables to say that the only valid sequence using them is from a > non-inlinable function that contains only direct initializations of the > register variables from constants or parameters. Let's just implement those requirements in the compiler itself. Ian
