Re: insn does not satisfy its constraints

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Hi!

Am 04.10.2007 um 15:52 schrieb Rask Ingemann Lambertsen:

The next step would be to check the .greg dump to see why register 101
ends up being assigned to a hard register in class Rx_REGS.

The compiler stops before it can write the .greg file :-( Btw, I use the switch -da to generate all files.


   But register 102 is a pseudo register, isn't it?

Yes, I have 96 hardware registers. They are all in the specification, but most are unused (yet).


A pseudo register must be accepted when !REG_OK_STRICT.

I forgot to accept pseudo-registers in REGNO_OK_FOR_BASE_P(r). Ok, now I can compile
int c; f(void) { c = 4711; }
There are some strange move-instruction, but I  can improve that later.

In my next High Scientific Programming code: int a, b, c; f(void) { c = a + b; } I get everything wrong again - even registers that should not be used at all. I'll check the .greg file and kepp you busy ;-)

Thanks,
Boris


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