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Re: Help with another constraint


On Sun, Dec 09, 2007 at 11:35:32AM -0500, Balaji V. Iyer wrote:
> Hello Rask,
> 	I am not understanding your response, can you clarify it for me?
> 
> As per the question  about the error message above?
> 
> ../../gcc-4.0.2/gcc/libgcc2.c -o libgcc/./_negdi2.o
> ../../gcc-4.0.2/gcc/libgcc2.c: In function '__negdi2':
> ../../gcc-4.0.2/gcc/libgcc2.c:72: error: insn does not satisfy its
> constraints:

   I think this is misleading you. It seems likely that the problem is with
the predicate and not the constraint.

> (insn 15 13 16 (set (mem:SI (plus:SI (reg/f:SI 2 r2)
                       ^^^

   This has to be a register, doesn't it? If so, use -fdump-rtl-all and look
at the dump files to see where it goes wrong.

>                 (const_int -28 [0xffffffe4])) [0 D.1256+0 S4 A32])
>         (neg:SI (reg:SI 3 r3 [orig:80 D.1255 ] [80]))) 38 {negsi2} (nil)
>     (nil))

   Please also post your negsi2 pattern.

-- 
Rask Ingemann Lambertsen
Danish law requires addresses in e-mail to be logged and stored for a year


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