On Wed, Mar 30, 2016 at 11:02:41AM +0200, Olivier Hainque wrote:
> void g(int, char *);
>
> void f(int x)
> {
> char big[200000];
> start:
> g(x, big);
> g(x, big);
> register void *p asm("r11") = &&start;
> asm("" : : "r"(p));
> asm("" : : :"r28");
> asm("" : : :"r29");
> asm("" : : :"r30");
> }
>
> I'm getting:
>
> lis 11,.L2@ha
> la 11,.L2@l(11)
>
> lwz 11,0(1)
> lwz 0,4(11)
> lwz 28,-16(11)
>
> mr 1,11
>
> mtlr 0
> lwz 29,-12(11)
> lwz 30,-8(11)
> lwz 31,-4(11)
>
> blr
BTW, the exact sequence you get depends on -mcpu (not surprising), but
yes, I see register restores after the "mr 1,11" too.
--
Alan Modra
Australia Development Lab, IBM
