This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

RE: Help with another constraint


On Wed, 12 Dec 2007, Dave Korn wrote:

> On 12 December 2007 12:14, Revital1 Eres wrote:
>
> > It seems that the pair m and I is missing (which indicate the memory =
> > constant instruction).
>
>   So doesn't the question then become "Why isn't reload reloading the constant
> into a register"?

Yes.  And the answer AFAIK is "because it doesn't see a way to
move a constant into a register; it understands "r", not "p" and
"q".

So bviyer, add an "r" alternative.  See also the "*" and "#"
qualifiers.  No need for bogus 0 -to- memory alternatives.

brgds, H-P


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]