Then it's filed as PR 30801.
FX
H. J. Lu wrote on 02/14/07 09:22:
Is this the saem as
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30735
No, it isn't.
On Wed, Feb 14, 2007 at 02:34:24PM +0100, Paweł Sikora wrote:
> François-Xavier Coudert napisał(a):
>
> >$ gcc -march=pentium4 -O3 a.c && time ./a.out
> >064069fbc13963b920219c3e939225e38e38e38e3956d81c71c71c71c0ba0f00
> >./a.out 1.81s user 0.00s system 99% cpu 1.818 total
> >$ gcc-4.3 -march=pen
François-Xavier Coudert napisał(a):
$ gcc -march=pentium4 -O3 a.c && time ./a.out
064069fbc13963b920219c3e939225e38e38e38e3956d81c71c71c71c0ba0f00
./a.out 1.81s user 0.00s system 99% cpu 1.818 total
$ gcc-4.3 -march=pentium4 -O3 a.c && time ./a.out
064069fbc13963b920219c3e939225e38e38e38e3956d8
I noticed a performance regression on the following code:
$ cat a.c
#include
#include
void
add256 (uint64_t x[4], const uint64_t y[4])
{
unsigned char carry;
x[0] += y[0];
carry = (x[0] < y[0]);
x[1] += y[1]+carry;
carry = carry ? (x[1] <= y[1]) : (x[1] < y[1]);
x[2] += y[2]+carry;
carr
