Hi!
You didn't what target you are using. Pentium D can run both 32bit
and 64bit. codes.
This was done with 32bit code. I have opened PR 42376 describing
the issue and added some more information.
Cheers,
Martin
On Mon, Dec 14, 2009 at 3:50 PM, Martin Reinecke
wrote:
> Hi,
>
> I have noticed a big performance decrease in one of my numerical codes
> when switching from gcc 4.4 to gcc 4.5. A small test case is attached.
> When compiling this test case with "gcc -O3 perf.c -lm -std=c99"
> and executing the r
