[Bug target/25500] REGREGRESSION: SSE2 vectorized code is many times slower on 4.x.x than on 3.4.4

["yuri at tsoft dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #9 from yuri at tsoft dot com  2005-12-20 06:51 -------
Subject: Re:  REGREGRESSION: SSE2 vectorized code is many
 times slower on 4.x.x than on 3.4.4

-----------------------------------
Using built-in specs.
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 3.4.4 [FreeBSD] 20050518
-----------------------------------
g++ -v (4.0.2)
Using built-in specs.
Target: i386-unknown-freebsd6.0
Configured with: ../gcc-4.0.2/configure --prefix=/usr/local/gcc-4.0.2
Thread model: posix
gcc version 4.0.2


pinskia at gcc dot gnu dot org wrote:

>------- Comment #8 from pinskia at gcc dot gnu dot org  2005-12-20 06:36 -------
>Can you show what the output of "gcc -v" for the 3.4 compiler and the 4.0
>compiler?
>
>This looks like just a different using arch by default.
>
>a Compiler compiled for i686 by default gives the good code but code compiled
>for i386 give bad code.
>
>
>  
>


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25500