https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64110
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |law at gcc dot gnu.org
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Vladimir Makarov from comment #15)
> Jakub, I've checked this particular test and LRA works in the same way as
> reload and as specified in the GCC documentation which mainly says that '!'
> is ignored only when *all* operands satisfy the alternative constraints. In
> this case there is one reload therefore alternative with '!r' is rejected.
> I understand that for this insn the desirable behaviour is to reject
> alternative only when operand with '!r' needs a reload.
>
> I could implement such functionality. The following unreserved special
> characters can be used as such modifier with the new functionality:
> @ $ ^ -
>
> What character would you prefer, Jakub?
No strong opinion, perhaps @ ? Jeff, what would you prefer?
