> I see what I missed the first time. Without optimization, we have stack > locals, which get allocated early. With optimization, we have > pseudo-regs which get spilled to the stack, which get allocated late. > So you are right, it is FRAME_GROWS_DOWNWARD that caused the behaviour > you saw. > > However, I would not call this an optimization. This is just how the > toolchain accidentally happens to work.
Without this emergent behaviour, stack slot assignment optimisation would have been much more important. -- Øyvind Harboe http://www.zylin.com
