[Bug tree-optimization/37573] gcc-4.4 regression: incorrect code generation with -O1 -ftree-vectorize

["edwintorok at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #2 from edwintorok at gmail dot com  2008-09-18 17:31 -------
Created an attachment (id=16357)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16357&action=view)
config.log for gcc 4.4

Some more system info:
$ uname -a
Linux debian 2.6.26-1-amd64 #1 SMP Wed Sep 10 15:31:12 UTC 2008 x86_64
GNU/Linux
$ cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9550  @ 2.83GHz
stepping        : 7
cpu MHz         : 2000.000
cache size      : 6144 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2
ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips        : 5669.97
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9550  @ 2.83GHz
stepping        : 7
cpu MHz         : 2000.000
cache size      : 6144 KB
physical id     : 0
siblings        : 4
core id         : 3
cpu cores       : 4
apicid          : 3
initial apicid  : 3
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2
ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips        : 5666.05
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 2
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9550  @ 2.83GHz
stepping        : 7
cpu MHz         : 2000.000
cache size      : 6144 KB
physical id     : 0
siblings        : 4
core id         : 1
cpu cores       : 4
apicid          : 1
initial apicid  : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2
ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips        : 5666.03
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 3
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Quad  CPU   Q9550  @ 2.83GHz
stepping        : 7
cpu MHz         : 2000.000
cache size      : 6144 KB
physical id     : 0
siblings        : 4
core id         : 2
cpu cores       : 4
apicid          : 2
initial apicid  : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm
constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx smx est tm2
ssse3 cx16 xtpr sse4_1 lahf_lm
bogomips        : 5666.03
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37573