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CFLAGS for Sandy i5
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lordalbert
l33t
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Joined: 26 Nov 2006
Posts: 832
Location: Italy

PostPosted: Fri Mar 27, 2015 11:33 am    Post subject: CFLAGS for Sandy i5 Reply with quote

Hi, i'm using CFLAGS="-march=core-avx-i -O2 -pipe" for my i5-2430M (Sandy Bridge) cpu.

Now i'm lookin on this wiki page: https://wiki.gentoo.org/wiki/Safe_CFLAGS#Core_i3.2Fi5.2Fi7_.26_Xeon_E3.2FE5.2FE7

which suggest to use -march=corei7-avx-i

Insted, -march=core-avx-i (which i'm using) is adviced for Ivy Bridge, the successor of my Sandy Bridge.


My question is: Could it give me some problems? Is better to rebuild all the system with the right -march value, or i can continue to use attual settings without any risk/problems?

Thank you!
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krinn
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Joined: 02 May 2003
Posts: 7198

PostPosted: Fri Mar 27, 2015 11:48 am    Post subject: Reply with quote

Just go with native
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