* Richard Guenther: >> If I don't want sign extension, what function should I use instead? >> Should I just call build_int_cst_wide directly? > > You should use a different type, one that is not sign-extended. > Non-canonical constants are not allowed as we share them based on > type and value.
I find it a bit puzzling that GCC deems -1 a canonical constant for an unsigned type (instead of the passed-in positive value), which leads to misoptimizations further down the road. In the meantime, I've realized that I should be using TYPE_MAX_VALUE (size_type_node), so I think this particular matter is resolved.
