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#1 2011-02-13 19:44:45
- graysky
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- Registered: 2008-12-01
- Posts: 10,696
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Intel Atom i686 users - please post the output of...
I read the following on the safe intel cflags wiki page about core2 on 32 bit platforms:
32 bit profile (x86):
CHOST="i686-pc-linux-gnu"
CFLAGS="-march=prescott -O2 -fomit-frame-pointer -pipe"
CXXFLAGS="${CFLAGS}"
Can someone with an atom processor please run the following and post the output?
gcc -c -Q -march=native --help=targetCPU-optimized Linux-ck packages @ Repo-ck • AUR packages • Zsh and other configs
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#2 2011-02-13 19:53:00
- Meyithi
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- From: Wirral, UK
- Registered: 2009-06-21
- Posts: 550
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Re: Intel Atom i686 users - please post the output of...
Atom N450 running i686
The following options are target specific:
-m128bit-long-double [disabled]
-m32 [enabled]
-m3dnow [disabled]
-m3dnowa [disabled]
-m64 [disabled]
-m80387 [enabled]
-m96bit-long-double [enabled]
-mabi=
-mabm [disabled]
-maccumulate-outgoing-args [disabled]
-maes [disabled]
-malign-double [disabled]
-malign-functions=
-malign-jumps=
-malign-loops=
-malign-stringops [enabled]
-march= atom
-masm=
-mavx [disabled]
-mbranch-cost=
-mcld [disabled]
-mcmodel=
-mcrc32 [disabled]
-mcx16 [enabled]
-mfancy-math-387 [enabled]
-mfma [disabled]
-mfma4 [disabled]
-mforce-drap [disabled]
-mfp-ret-in-387 [enabled]
-mfpmath=
-mfused-madd [enabled]
-mglibc [enabled]
-mhard-float [enabled]
-mieee-fp [enabled]
-mincoming-stack-boundary=
-minline-all-stringops [disabled]
-minline-stringops-dynamically [disabled]
-mintel-syntax [disabled]
-mlarge-data-threshold=
-mlwp [disabled]
-mmmx [disabled]
-mmovbe [enabled]
-mms-bitfields [disabled]
-mno-align-stringops [disabled]
-mno-fancy-math-387 [disabled]
-mno-push-args [disabled]
-mno-red-zone [disabled]
-mno-sse4 [enabled]
-momit-leaf-frame-pointer [disabled]
-mpc
-mpclmul [disabled]
-mpopcnt [disabled]
-mpreferred-stack-boundary=
-mpush-args [enabled]
-mrecip [disabled]
-mred-zone [enabled]
-mregparm=
-mrtd [disabled]
-msahf [enabled]
-msoft-float [disabled]
-msse [disabled]
-msse2 [disabled]
-msse2avx [disabled]
-msse3 [disabled]
-msse4 [disabled]
-msse4.1 [disabled]
-msse4.2 [disabled]
-msse4a [disabled]
-msseregparm [disabled]
-mssse3 [disabled]
-mstack-arg-probe [disabled]
-mstackrealign [enabled]
-mstringop-strategy=
-mtls-dialect=
-mtls-direct-seg-refs [enabled]
-mtune= atom
-muclibc [disabled]
-mveclibabi=
-mxop [disabled]Offline
#3 2011-02-13 20:15:43
- graysky
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Re: Intel Atom i686 users - please post the output of...
Thanks Meyithi - I think this means the gentoo wiki is wrong.
CPU-optimized Linux-ck packages @ Repo-ck • AUR packages • Zsh and other configs
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#4 2011-02-13 20:37:20
- Meyithi
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- From: Wirral, UK
- Registered: 2009-06-21
- Posts: 550
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Re: Intel Atom i686 users - please post the output of...
I use march=native in my makepkg.conf, Gentoo wiki confused me as to why you could use native with x64 but not with x86, so I did it anyway!
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#5 2011-02-13 20:56:13
- graysky
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- Registered: 2008-12-01
- Posts: 10,696
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Re: Intel Atom i686 users - please post the output of...
@M - Yeah, it's a bit confusing... I am doing some cross compiling and will need to manually set them which is why I posted 
CPU-optimized Linux-ck packages @ Repo-ck • AUR packages • Zsh and other configs
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#6 2011-02-14 13:06:02
- dieghen89
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- From: Italy
- Registered: 2009-06-24
- Posts: 134
Re: Intel Atom i686 users - please post the output of...
Hi graysky, here my output (N550):
diego@eeepc ~>gcc -c -Q -march=native --help=target
The following options are target specific:
-m128bit-long-double [disabled]
-m32 [enabled]
-m3dnow [disabled]
-m3dnowa [disabled]
-m64 [disabled]
-m80387 [enabled]
-m96bit-long-double [enabled]
-mabi=
-mabm [disabled]
-maccumulate-outgoing-args [disabled]
-maes [disabled]
-malign-double [disabled]
-malign-functions=
-malign-jumps=
-malign-loops=
-malign-stringops [enabled]
-march= atom
-masm=
-mavx [disabled]
-mbranch-cost=
-mcld [disabled]
-mcmodel=
-mcrc32 [disabled]
-mcx16 [enabled]
-mfancy-math-387 [enabled]
-mfma [disabled]
-mfma4 [disabled]
-mforce-drap [disabled]
-mfp-ret-in-387 [enabled]
-mfpmath=
-mfused-madd [enabled]
-mglibc [enabled]
-mhard-float [enabled]
-mieee-fp [enabled]
-mincoming-stack-boundary=
-minline-all-stringops [disabled]
-minline-stringops-dynamically [disabled]
-mintel-syntax [disabled]
-mlarge-data-threshold=
-mlwp [disabled]
-mmmx [disabled]
-mmovbe [enabled]
-mms-bitfields [disabled]
-mno-align-stringops [disabled]
-mno-fancy-math-387 [disabled]
-mno-push-args [disabled]
-mno-red-zone [disabled]
-mno-sse4 [enabled]
-momit-leaf-frame-pointer [disabled]
-mpc
-mpclmul [disabled]
-mpopcnt [disabled]
-mpreferred-stack-boundary=
-mpush-args [enabled]
-mrecip [disabled]
-mred-zone [enabled]
-mregparm=
-mrtd [disabled]
-msahf [enabled]
-msoft-float [disabled]
-msse [disabled]
-msse2 [disabled]
-msse2avx [disabled]
-msse3 [disabled]
-msse4 [disabled]
-msse4.1 [disabled]
-msse4.2 [disabled]
-msse4a [disabled]
-msseregparm [disabled]
-mssse3 [disabled]
-mstack-arg-probe [disabled]
-mstackrealign [enabled]
-mstringop-strategy=
-mtls-dialect=
-mtls-direct-seg-refs [enabled]
-mtune= atom
-muclibc [disabled]
-mveclibabi=
-mxop [disabled]i use this flags:
CFLAGS="-O2 -march=atom -mtune=atom -mssse3 -mfpmath=sse -fomit-frame-pointer -pipe"
CXXFLAGS="$CFLAGS"
MAKEFLAGS="-j4"Last edited by dieghen89 (2011-02-14 13:13:49)
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