http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44970
--- Comment #99 from dave at hiauly1 dot hia.nrc.ca 2010-11-14 23:12:25 UTC ---
On Sun, 14 Nov 2010, bonzini at gnu dot org wrote:
> Minimized testcase:
>
> int f (unsigned long arg, int *cr)
> {
> int *p = (int *) arg;
> int x = *cr;
> long pu_err = 0;
> if (x)
> asm volatile ("stw %2,0(%1)": "=r" (pu_err): "r" (p), "r" (x));
>
> asm volatile ("stw %2,0(%%sr3,%1)": "=r" (pu_err): "r" (p), "r" (x));
> return pu_err;
> }
>
> Fails at -O2.
Cool! The reduced code no longer makes any sense but it should compile.
I'm sure this was a fair bit of work.
Dave
