Re: GCC performance regression - its memset!

[Michel LESPINASSE <walken@zoy.org>]

My test case was actually wrong - the final test should be with
table[62] not table[63]. But, with this correction, it does exhibit
the bug I was mentionning.

Sorry for the mistake :/

On Mon, Apr 22, 2002 at 11:07:09PM -0700, Michel LESPINASSE wrote:
> This option actually generates invalid code for me. Here is a test case:
> ------------------- cut here -----------------
> #include <string.h>
> 
> short table[64];
> 
> int main (void)
> {
>     int i;
> 
>     for (i = 0; i < 64; i++)
>         table[i] = 1234;
> 
>     memset (table, 0, 63 * sizeof(short));
> 
>     return (table[63] != 0);
> }
> ------------------- cut here -----------------
> This code should return 0, however it returns 1 (compiled with -O3
> -minline-all-stringops)

-- 
Michel "Walken" LESPINASSE
Is this the best that god can do ? Then I'm not impressed.