Constraints and reload

[Joern Rennecke]

Quoting Jean Christophe Beyler <jean.christophe.beyler@gmail.com>:
> I have an expand_move that rejects anything not accepted, a check_move
> that makes sure everything is ok and the constraints that go with (my
> 'R' constraint).
>
> The instruction generated during greg should normally be refused.
>
> From what you've said, it seems that I did forget to define something
> so I will look at the secondary reload stuff ?

When reload decides if something is suitable for reg_equiv_mem or
only for reg_equiv_address, it uses strict_memory_address_p.

If you don't have patterns that can handle certain addresses in DFmode,
you should reject these addresses in GO_IF_LEGITIMATE_ADDRESS /
TARGET_LEGITIMATE_ADDRESS_P.