> There's some discussion about how STACK_POINT_OFFSET shouldn't cause us > to have to align, and postponing that optimization to gcc-4.7. Since > STACK_POINTER_OFFSET should be constant, it ought to be easy enough to > take it into account.
See the "Minor cleanup to allocate_dynamic_stack_space" subthread, I think that the real issue is STACK_DYNAMIC_OFFSET. -- Eric Botcazou