Safe Cflags/Intel

Pentium
vendor_id : GenuineIntelb cpu family : 5 model : 2 model name : Pentium 75 - 200

CHOST="i586-pc-linux-gnu" CFLAGS="-march=pentium -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Pentium w/ MMX
CHOST="i586-pc-linux-gnu" CFLAGS="-march=pentium-mmx -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Pentium Pro
CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentiumpro -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Pentium II
vendor_id : GenuineIntel cpu family : 6 model : 3, 5

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium2 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

processor      : 0 vendor_id      : GenuineIntel cpu family     : 6 model          : 6 model name     : Mobile Pentium II stepping        : 10 cpu MHz        : 397.082 cache size     : 256 KB fdiv_bug        : no hlt_bug         : no f00f_bug        : no coma_bug        : no fpu             : yes fpu_exception  : yes cpuid level    : 2 wp             : yes flags          : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr bogomips       : 794.75 clflush size   : 32

Celeron (Mendocino), aka Celeron1
vendor_id : GenuineIntel cpu family : 6 model : 6 stepping : 0

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium2 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

processor      : 0 vendor_id      : GenuineIntel cpu family     : 6 model          : 6 model name     : Celeron (Mendocino) stepping       : 0 cpu MHz        : 334.108 cache size     : 128 KB fdiv_bug        : no hlt_bug         : no f00f_bug        : no coma_bug        : no fpu             : yes fpu_exception  : yes cpuid level    : 2 wp             : yes flags          : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr up bogomips        : 686.94 clflush size   : 32

Pentium III/ Mobile Celeron
vendor_id : GenuineIntel cpu family : 6 model : 7, 8, 11

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium3 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

processor      : 0 vendor_id      : GenuineIntel cpu family     : 6 model          : 8 model name     : Pentium III (Coppermine) stepping       : 6 cpu MHz        : 863.934 cache size     : 256 KB fdiv_bug        : no hlt_bug         : no f00f_bug        : no coma_bug        : no fpu             : yes fpu_exception  : yes cpuid level    : 2 wp             : yes flags          : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse bogomips       : 1728.97 clflush size   : 32

Celeron (Coppermine)
vendor_id : GenuineIntel cpu family : 6 model : 8 stepping : 10 (On a Compaq Presario 1800 this number was 1)

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium3 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Celeron (Willamette)
vendor_id : GenuineIntel cpu family : 15 model : 1 model name : Intel(R) Celeron(R) CPU XXXXGHz stepping : 3

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium4 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Pentium M(Centrino)/Celeron M
vendor_id : GenuineIntel cpu family : 6 model : 9 or 13 model name : Intel(R) Pentium(R) M processor XXXXMHz

For gcc 3.3 or older: CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium3 -msse2 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

For gcc 3.4 and later: CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium-m -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

The Celeron M is based on the Pentium M but it has half the L2 cache and does not support the SpeedStep technology. processor      : 0 vendor_id      : GenuineIntel cpu family     : 6 model          : 13 model name     : Intel(R) Pentium(R) M processor 2.00GHz stepping       : 8 cpu MHz        : 800.000 cache size     : 2048 KB fdiv_bug        : no hlt_bug         : no f00f_bug        : no coma_bug        : no fpu             : yes fpu_exception  : yes cpuid level    : 2 wp             : yes flags          : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx up bts est tm2 bogomips       : 1597.70 clflush size   : 64

Mobile Pentium 4-M (Northwood)
vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Mobile Intel(R) Pentium(R) 4 - M CPU X.XXGHz

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium4 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Pentium 4
vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium4 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Pentium 4 (Prescott) / Celeron D
vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU 2.80GHz

32-bit profile (x86): CHOST="i686-pc-linux-gnu" CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

64-bit profile (amd64): CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="${CFLAGS}"

In 2004, Intel started branding processors with the Prescott core as Intel Celeron D.

Pentium D 8xx / 9xx
vendor_id : GenuineIntel cpu family : 15 model : 4, 6 model name : Intel(R) Pentium(R) D CPU x.xxGHz

32-bit profile (x86): CHOST="i686-pc-linux-gnu" CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

64-bit profile (amd64): CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="${CFLAGS}"

Xeon w/o EM64T
vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Xeon(TM) CPU 2.80GHz

CHOST="i686-pc-linux-gnu" CFLAGS="-march=pentium4 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Xeon w/EM64T (also Pentium 4 P6xx or Celeron M 5xx)
vendor_id : GenuineIntel cpu family : 15 model : 4,6 model name : Intel(R) Xeon(R) CPU XXXXMHz model name : Intel(R) Celeron(R) M CPU 5xx @ XXXGHz

32-bit profile (x86): CHOST="i686-pc-linux-gnu" CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

64-bit profile (amd64): CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="${CFLAGS}"

Intel Core Solo/Duo, Pentium Dual-Core T20xx/T21xx
vendor_id : GenuineIntel cpu family : 6 model : 14, 22, 4 model name : Genuine Intel(R) CPU TXXXX @ X.XXGHz model name : Intel(R) Celeron(R) CPU 220 @ 1.20GHz model name : Intel(R) Celeron(R) CPU 4X0 @ X.XXGHz model name : Intel(R) Celeron(R) M CPU 4X0 @ X.XXGHz

CHOST="i686-pc-linux-gnu" CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

Notes:
 * It has been confirmed by hongjiu.lu@intel.com that prescott is the correct microarchitecture to use with this CPU. http://article.gmane.org/gmane.comp.gcc.devel/83870
 * The newer (eg. 420) Celeron-M processors are Core Solo based, not Pentium-M based. If your processor's family and model are 6 and 14, then you should use the -march=prescott option.
 * Both the Celeron 4x0 and 220 run fine with Processor family (Pentium M) selected in the kernel.

Core 2 Duo/Quad, Xeon 51xx/53xx/54xx/3360, Pentium Dual-Core T23xx+/Exxxx, Celeron Dual-Core
vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Dual-core CPU E5700 @ 3.00GHz model name : Intel(R) Core(TM)2 duo CPU E7400 @ 2.80GHz model name : Intel(R) Pentium(R) Dual CPU T23xx @ XXXGHz model name : Intel(R) Xeon(R) CPU X3360

32 bit profile (x86) for < GCC 4.3: CHOST="i686-pc-linux-gnu" CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

32 bit profile (x86) for >= GCC 4.3: CHOST="i686-pc-linux-gnu" CFLAGS="-march=core2 -O2 -pipe -fomit-frame-pointer" CXXFLAGS="${CFLAGS}"

64 bit profile (amd64) for < GCC 4.3 CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="${CFLAGS}"

64 bit profile (amd64) for >= GCC 4.3 CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -O2 -pipe" CXXFLAGS="${CFLAGS}"

Core i7 and Core i5, Xeon 55xx
vendor_id      : GenuineIntel cpu family     : 6 model          : 26 model name     : Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz

vendor_id      : GenuineIntel cpu family     : 6 model          : 37 model name     : Intel(R) Core(TM) i5 CPU         650  @ 3.20GHz / 660 @ 3.33 GHz

vendor_id      : GenuineIntel cpu family     : 6 model          : 42 model name     : Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz stepping       : 7 cpu MHz        : 2394.550 cache size     : 3072 KB

vendor_id      : GenuineIntel cpu family     : 6 model          : 26 model name     : Intel(R) Xeon(R) CPU          X5570  @ 2.93GHz

32 bit profile (x86) CHOST="i686-pc-linux-gnu" CFLAGS="-march=core2 -O2 -fomit-frame-pointer -pipe" CXXFLAGS="${CFLAGS}"

64 bit profile (amd64) for < GCC 4.3 CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="${CFLAGS}"

64 bit profile (amd64) for GCC 4.3 CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -mtune=generic -O2 -pipe" CXXFLAGS="${CFLAGS}"

64 bit profile (amd64) for GCC 4.6 CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=corei7 -O2 -pipe" CXXFLAGS="${CFLAGS}"

Atom 230, Atom 330, Atom N-Series
vendor_id      : GenuineIntel cpu family     : 6 model          : 28 model name     : Intel(R) Atom(TM) CPU  230   @ 1.60GHz stepping       : 2 cpu MHz        : 1596.175 cache size     : 512 KB

vendor_id      : GenuineIntel cpu family     : 6 model          : 38 model name     : Genuine Intel(R) CPU        @ 1.60GHz stepping       : 1 cpu MHz        : 1600.033 cache size     : 512 KB

32 bit profile (x86): CHOST="i686-pc-linux-gnu" CFLAGS="-march=atom -O2 -fomit-frame-pointer -pipe" CXXFLAGS="${CFLAGS}"

32 bit gcc 4.5.3 (x86) CHOST="i686-pc-linux-gnu" CFLAGS="-march=native -O2 -fomit-frame-pointer -pipe -mfpmath=sse" CXXFLAGS="${CFLAGS}"

These more aggressive flags above improve single threaded performance benchmarks (ie nbench) on the atom 330 with GCC 4.5.3 considerably, most notably there is a floating point performance increase of ~20%.

64 bit profile (amd64) for < GCC 4.3: CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=nocona -O2 -pipe" CXXFLAGS="${CFLAGS}"

64 bit profile (amd64) for GCC 4.3 and 4.4: CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -O2 -mtune=generic -pipe" CXXFLAGS="${CFLAGS}"

64 bit profile (amd64) for >= GCC 4.5: CHOST="x86_64-pc-linux-gnu" CFLAGS="-march=atom -O2 -pipe" CXXFLAGS="${CFLAGS}"

Bezpieczne CFLAGS/Intel Güvenli Cflags Değerleri/Intel Safe_Cflags/Intel