From: Nick Desaulniers > Sent: 22 October 2020 20:05 > ... > Passing an `unsigned long` as an `unsigned int` does no such > narrowing: https://godbolt.org/z/TvfMxe (same vice-versa, just tail > calls, no masking instructions). Right but is the called function going to use 32bit ops and/or mask the register? Certainly that is likely on x86-64. I've rather lost track of where the masking is expected to happen. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
