Zack Weinberg <[EMAIL PROTECTED]> writes: > I have worked out a tentative plan for replacing most of these macros > with ordinary target hooks, and eliminating REG_OK_STRICT. I propose > to change GO_IF_LEGITIMATE_ADDRESS, GO_IF_MODE_DEPENDENT_ADDRESS, > LEGITIMIZE_ADDRESS, LEGITIMIZE_RELOAD_ADDRESS, REG_OK_FOR_BASE_P, > REG_MODE_OK_FOR_BASE_P, REG_MODE_OK_FOR_REG_BASE_P, > REG_OK_FOR_INDEX_P, CONSTANT_ADDRESS_P, FIND_BASE_TERM, and > LEGITIMATE_CONSTANT_P. The other macros in this section are all > numeric constants and in at least one case are used to size static > arrays, so conversion to hooks doesn't make sense (yet).
Maybe this is going off at too much of a tangent, but I've often thought it would be nice to combine some of these macros. For example, rather than replace both GO_IF_LEGITIMATE_ADDRESS and GO_IF_MODE_DEPENDENT_ ADDRESS with new target hooks, why not have a single target hook in which a mode argument of VOIDmode means "valid for all modes"? A change like that should help to reduce code duplication in backends and ought to fit in with the step-by-step transition. Richard
