Re: [PATCH] KVM: 'asm' operand has impossible constraints

Avi Kivity
2007-01-28T09:41:48Z

Paweł Sikora wrote:
> On Saturday 27 of January 2007 10:05:53 Avi Kivity wrote:
>
>
>> "g" appears to be equivalent to "rmi", if "i" is impossible, gcc is free
>> to use "r" or "m", no?
>>
>
> `r'
> A register operand is allowed provided that it is in a general
> register.
> `g'
> Any register, memory or immediate integer operand is allowed,
> except for registers that are not general registers.
>
> so, it looks like g == !r for registers ( not general vs. general regs ).
>

I read it as g == !!r for registers ("except" and "not" constitute a
double negative).

--
error compiling committee.c: too many arguments to function

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