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Re: "+m" constraints bogus?

On 7/24/07, Jan Hubicka <jh@suse.cz> wrote:
I will try to find the original Jason's problem, does anyone recall? 

well the gimplifier no longer allows "+m" to pass to expand, we always
expoand the constraints.

Take:
int f(int a)
{
 asm("":"+m"(a) );
 return a;
}

The gimplifier produces:
apinski@debian:~$ cat t1212.c.004t.gimple
f (a)
{
 int D.1627;

 __asm__("":"=m" a:"m" a);
 D.1627 = a;
 return D.1627;
}


Thanks,
Andrew Pinski

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