DJ Delorie wrote: > For such constraints that are memory operands but not > define_memory_constraint, you need to use '*' to keep reload from > trying to guess a register class from them (it guesses wrong for > rl78). > > I.e. use "*Wfr" instead of "Wfr".
Huh? That seems weird. It should make no difference for purposes of register class preferences whether a constraint is marked as memory constraint or extra constraint: neither contributes to register class preferences at all. If the '*' makes any difference, I guess this can only be because IRA chooses another alternative for the insn to begin with. Do you have an example that shows the problem? Bye, Ulrich -- Dr. Ulrich Weigand GNU/Linux compilers and toolchain ulrich.weig...@de.ibm.com
