Safe Cflags/AMD
From Gentoo Linux Wiki
[edit] K6
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=k6 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] K6-2
vendor_id : AuthenticAMD cpu family : 5 model : 8
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=k6-2 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
processor : 0 vendor_id : AuthenticAMD cpu family : 5 model : 8 model name : AMD-K6(tm) 3D processor stepping : 12 cpu MHz : 451.031 cache size : 64 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr mce cx8 pge mmx syscall 3dnow k6_mtrr up bogomips : 902.84 clflush size : 32
Note: /proc/cpuinfo may be confusing. The model name may say "AMD-K6(tm) 3D Processor" but it is not a AMD K6-3. Rely on the vendor_id, CPU family, and model number.
Note: If you get "Illegal Instruction" errors on compiles (especially long ones), you may be running into a cooling problem, or worse yet, a Sig11 (segmentation fault/bad ram) problem. Bug #24379 has a discussion about it.
[edit] Geode LX
processor : 0 vendor_id : AuthenticAMD cpu family : 5 model : 10 model name : Geode(TM) Integrated Processor by AMD PCS stepping : 2 cpu MHz : 498.044 cache size : 128 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu de pse tsc msr cx8 sep pge cmov clflush mmx mmxext 3dnowext 3dnow bogomips : 996.08 clflush size : 32
CHOST="i486-pc-linux-gnu"
CFLAGS="-march=k6-2 -Os -fno-align-jumps -fno-align-functions -fno-align-labels -fno-align-loops -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
GCC 4.3+:
CHOST="i486-pc-linux-gnu"
CFLAGS="-march=geode -Os -fno-align-jumps -fno-align-functions -fno-align-labels -fno-align-loops -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
Note: While i586-pc-linux-gnu CHOST works fine on a Geode LX, i486-pc-linux-gnu should be a more performant choice right now due to the way Geode LX CPU pipeline and scheduling works. glibc i586 assembler optimized routines are measurably slower than the i486 ones on a Geode LX.
[edit] Geode GX1
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=pentium-mmx -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] K6-3
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=k6-3 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Duron
From 600 to 900 MHz. These models have a tbird-alike core model.
product: AMD Duron(tm) Processor version: 6.3.1
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-tbird -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Mobile Duron
vendor_id : AuthenticAMD cpu family : 6 model : 3 model name : AMD Duron(tm) Processor
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-tbird -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Duron Morgan
From 900 to 1300 MHz. The Morgan Durons are based on the Palomino core, and hence can be treated as Athlon XP's.
vendor_id : AuthenticAMD cpu family : 6 model : 7 model name : AMD Duron(tm) Processor stepping : 1
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Athlon
vendor_id : AuthenticAMD cpu family : 6 model : 8 or 4 or 2 or 1 model name : AMD Athlon(TM)Processor or AMD-K7(TM)Processor stepping : 4 or 2 or 1
Note: This processor is only available as a Slot A processor; if you have a Socket A/462 Athlon, it's a Thunderbird (see below).
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Athlon Thunderbird
vendor_id : AuthenticAMD cpu family : 6 model : 4 model name : AMD Athlon(tm) Processor
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-tbird -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Athlon (Palomino) XP/Duron
vendor_id : AuthenticAMD cpu family : 6 model : 8 model name : AMD Athlon(tm)
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
Sempron 2400+ (2000MHz) is also identified as cpu family:6 model:8 model_name:AMD Sempron(TM) 2400+ (256kB cache). The Duron 1800+ is also included in this list.
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : AMD Sempron(tm) 2400+
stepping : 1
cpu MHz : 1659.979
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp
mmxext 3dnowext 3dnow up ts
bogomips : 3328.55
clflush size : 32
[edit] Athlon 4
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-4 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Athlon XP/Geode NX
vendor_id : AuthenticAMD cpu family : 6 model : 6 or 8 stepping : 2 Some CPUs have also been observed with the following: model : 10 model name : AMD Athlon(tm) XP 2500+ stepping : 0
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 6
model name : AMD Athlon(tm) XP 2000+
stepping : 2
cpu MHz : 1670.597
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall
mmxext 3dnowext 3dnow up ts
bogomips : 3343.54
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 8
model name : AMD Geode NX 1750
stepping : 1
cpu MHz : 1400.115
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mp
mmxext 3dnowext 3dnow up ts fid vid
bogomips : 2801.55
clflush size : 32
[edit] Athlon MP
vendor_id : AuthenticAMD cpu family : 6 model : 10 model name : AMD Sempron(tm) stepping : 0
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-mp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
[edit] Athlon 64
32 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
cpu family :15 model :4 model name :AMD Athlon(tm) 64 Processor 3200+ stepping :8
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 63
model name : AMD Athlon(tm) 64 Processor 3200+
stepping : 2
cpu MHz : 1999.821
cache size : 512 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm
bogomips : 4001.79
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
[edit] Athlon 64 X2
vendor_id: AuthenticAMD cpu family: 15 model: 35, 43, 75 or 107 stepping: 1 or 2 model name: AMD Athlon(tm) 64 X2 Dual Core Processor
32 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Athlon(tm)64 X2 Dual Core Processor 4200+
stepping : 1
cpu MHz : 2200.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm cmp_legacy
bogomips : 4424.71
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 43
model name : AMD Athlon(tm)64 X2 Dual Core Processor 4200+
stepping : 1
cpu MHz : 2200.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow rep_good pni lahf_lm cmp_legacy
bogomips : 4424.71
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
If you have a newer Athlon64("Venice" or "San Diego")/Athlon64-X2("Manchester", "Toledo", or "Windsor") (check for pni in cat /proc/cpuinfo) you can also add -msse3 to your CFLAGS to enable SSE3 support. Any chip using the 90nm process except for the "Winchester" class Athlon64 supports SSE3.
If you're having gcc-4.3+ and "pni" in flags, you may want to use -march=k8-sse3 instead of -march=k8. You can take out the -msse3 by doing this.
Also bear in mind that all Athlon64 X2 and Opteron 165, 170, 175, 180, and 185 processors are dual-core CPUs so make sure that you use MAKEOPTS="-j3" in your make.conf. This doesn't affect the code but might reduce compile times.
All socket AM2 processors are SSE3 capable as well.
There are some socket AM2+ Athlon processors which are Phenom based (Athlon X2 7550, Athlon X2 7750, Athlon X2 7850). Look below.
[edit] 1xx Opteron
vendor_id : AuthenticAMD cpu family : 15 model : 5 model name : AMD Opteron(tm) Processor 1xx stepping : 8
32-bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-O2 -march=opteron -msse3 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64-bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=opteron -O2 -pipe"
CXXFLAGS="${CFLAGS}"
socket 939, single core:
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 39
model name : AMD Opteron(tm) Processor 144
stepping : 1
cpu MHz : 1800.000
cache size : 1024 KB
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
syscall nx mmxext fxsr_opt lm 3dnowext 3dnow up pni lahf_lm
bogomips : 3593.50
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp
socket 939, dual core:
processor : [0 | 1] vendor_id : AuthenticAMD cpu family : 15 model : 35 model name : Dual Core AMD Opteron(tm) Processor 180 stepping : 2 cpu MHz : 1000.000 cache size : 1024 KB physical id : 0 siblings : 2 core id : [0 | 1] cpu cores : 2 apicid : [0 | 1] initial apicid : [0 | 1] fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni lahf_lm cmp_legacy bogomips : 2006.23 clflush size : 64 power management: ts fid vid ttp
[edit] 2xx/8xx Opteron
vendor_id : AuthenticAMD cpu family : 15 model : 5 model name : AMD Opteron(tm) Processor xxx stepping : 8
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=opteron -O2 -pipe"
CXXFLAGS="${CFLAGS}"
[edit] 22xx Dual-Core Opteron
vendor_id : AuthenticAMD cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm) Processor 22xx stepping : 2
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=opteron -O2 -pipe"
CXXFLAGS="${CFLAGS}"
processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm) Processor 2212 HE stepping : 3 cpu MHz : 2010.298 cache size : 1024 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu tsc msr pae mce cx8 apic mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm cr8_legacy bogomips : 4022.18 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc
[edit] 23xx Quad-Core Barcelona
vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : Quad-Core AMD Opteron(tm) Processor 23xx stepping : 10
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
Note: For GCC 4.3+ you may use the -march=barcelona option.
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : Quad-Core AMD Opteron(tm) Processor 2354
stepping : 3
cpu MHz : 2200.000
cache size : 512 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good pni monitor
cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw
ibs
bogomips : 4402.66
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
[edit] 61xx Eight-Core Magny-Cours
vendor_id : AuthenticAMD cpu family : 16 model : 9 model name : AMD Opteron(tm) Processor 61xx stepping : 5
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-mtune=amdfam10 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 9 model name : AMD Opteron(tm) Processor 6128 stepping : 1 cpu MHz : 800.000 cache size : 512 KB physical id : 0 siblings : 8 core id : 0 cpu cores : 8 apicid : 16 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid amd_dcm pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save bogomips : 3999.82 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate
[edit] Athlon X2 7x50, Phenom X3/X4, Phenom II, Athlon II X2/X3/X4
vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) xxxx Triple/Quad-Core Processor stepping : 2/3
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=amdfam10 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
Note: For versions of GCC older than 4.3+ you have to use -march=k8 -msse3 -msse4a to get all processor features (as long as your version of gcc supports them).
processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 6 model name : AMD Athlon(tm) II X2 240 Processor stepping : 2 cpu MHz : 2812.549 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt npt lbrv svm_lock nrip_save bogomips : 5625.09 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 4
model name : AMD Phenom(tm) II X3 720 Processor
stepping : 2
cpu MHz : 2812.378
cache size : 512 KB
physical id : 0
siblings : 3
core id : 0
cpu cores : 3
apicid : 0
initial apicid : 0
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 5
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall
nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc nonstop_tsc pni monitor cx16 lahf_lm cmp_legacy
svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt
bogomips : 5624.75
clflush size : 64
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9950 Quad-Core Processor stepping : 3 cpu MHz : 2808.614 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good pni monitor cx16 lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs bogomips : 5617.22 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management : ts ttp tm stc 100mhzsteps hwpstate
processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 5 model name : AMD Athlon(tm) II X4 630 Processor stepping : 2 cpu MHz : 2800.000 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nonstop_tsc extd_apicid pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt bogomips : 5624.67 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm stc 100mhzsteps hwpstate
[edit] Sempron / Sempron64
- If it is a Socket A (Socket 462) Sempron you can be sure it is neither 64-bit capable nor SSE2/SSE3 capable as it based on the Athlon XP.
- If it is a Socket 754 it depends on the stepping (part number):
- Stepping: CG (Part No.: *AX) or D0 (Part No.: *BA) have neither SSE3 nor AMD64
- Stepping: E3 (Part No.: *BO) has SSE3
- Stepping: E6 (Part No.: *BX) has SSE3 and AMD64
- For other steppings better check the flags.
- Anyway you should check /proc/cpuinfo for pni (SSE3) string before using -msse3.
- Since GCC 4.3.0 you can use -march=k8-sse3 instead -msse3. GCC 4.3.0 - Intel 386 and AMD x86-64 Options
- Also check /proc/cpuinfo for lm (Long mode) to see if supports 64-bit.
- If it is a Socket AM2 Sempron you can be sure it is both 64-bit and SSE3 capable.
- If it is a Socket AM3 Sempron (e.g. Sempron 140), it is based on the AMD Phenom and is thus 64-bit capable and has SSE3 and SSE4a.
vendor_id : AuthenticAMD cpu family : 15 model : 44 model name : AMD Sempron(tm) Processor
32 bit (Socket A):
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit (Socket 754):
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
64 bit (Socket 754/AM2, SSE3 capable):
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -msse3 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
64-bit (Socket AM3):
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=amdfam10 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
[edit] Turion64 / X2 / Ultra
32 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -msse3 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -msse3 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
[edit] Mobile Sempron
vendor_id : AuthenticAMD cpu family : 15 model : 8 model name : Mobile AMD Sempron Processor 2800+
32 bit:
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -msse3 -O2 -pipe -fomit-frame-pointer"
CXXFLAGS="${CFLAGS}"
64 bit:
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=k8 -msse3 -O2 -pipe"
CXXFLAGS="${CFLAGS}"
If you have a Sempron without SSE3 (earlier chips), omit "-msse3". SSE3 is called pni (prescott new instuction) by cpuinfo (cat /proc/cpuinfo).
Check it out, there are many different sempron mobile CPUs on sale, those that work at 1.8GHz are K8 (i.e. AMD SM 3000+), some others, older, aren't yet k8 but they're still k7 so you must specify athlon-xp instead of athlon64, anyway AMD announced in 2006 there will be 64bit Sempron Mobile CPUs so be carefull and pay attention, run a cat /proc/cpuinfo and then ask on AMD forums if you don't know what to do.
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 44
model name : Mobile AMD Sempron(tm) Processor 3000+
stepping : 2
cpu MHz : 1800.000
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2
syscall nx mmxext fxsr_opt 3dnowext 3dnow pni lahf_lm ts fid vid ttp tm stc
bogomips : 3602.19
clflush size : 64
