[Bug tree-optimization/18431] Code for arrays and pointers are not the same

[rakdver at atrey dot karlin dot mff dot cuni dot cz]

------- Additional Comments From rakdver at atrey dot karlin dot mff dot cuni dot cz  2004-11-12 14:48 -------
Subject: Re:  Code for arrays and pointers are not the same

> huh a compiler built with that patch gives:
> L4:
>         slwi r2,r9,1
>         addi r9,r9,1
>         sthx r0,r2,r11
>         bdnz L4
> 
> Also pulling the load manually out loop also produce the same asm as I just produced:
> unsigned short *q;
> #define NOSB 10
> int last;
> void h1()
> {
>  int i;
> unsigned short *q1 = q;
>  for (i=0;i<last+NOSB;i++)
>    {
>      q1[i] = 0;
>    }
> }

not for me:

.L4:
    sth 0,0(9)
    addi 9,9,2
    bdnz .L4

what architecture/flags are you using?

Zdenek


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18431