On Wed, Jan 13, 2021 at 08:53:13PM +0100, Fredrik Noring wrote: > > For the archives, no one has said it yet: to just disable the > > optimisation transforming the loop into a memset, you can use > > -fno-tree-loop-distribute-patterns . > > It's a new 32-bit libc (for Atari TOS), and maximum GCC optimisations are > welcome, although I haven't yet figured out exactly where the boundary is > between the GCC built-ins and this libc implementation. There is obviously > some overlap between the two, and I wouldn't want the libc to stand in the > way of GCC's optimisations. You would use this flag only for compiling the memset (etc.) routines themselves. Maybe using a pragma or similar. Segher
