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safe move from -march=prescott to -march=core2?
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mikegpitt
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PostPosted: Wed Aug 05, 2009 1:49 am    Post subject: safe move from -march=prescott to -march=core2? Reply with quote
Quick question, I was using -march=prescott in my CFLAGS, but I think since I recently upgraded to gcc-4.3.2 I can move to -march=core2. Is this true?

This is the output from /proc/cpuinfo
Code:
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Pentium(R) Dual  CPU  T3400  @ 2.16GHz
stepping        : 13


It looks like it should be fine according to this link, but I figured I'd rather be safe than sorry, since it doesn't explicitly list the T34xx chip:
http://en.gentoo-wiki.com/wiki/Safe_Cflags/Intel#Core_2_Duo.2FQuad.2C_Xeon_51xx.2F53xx.2F54xx.2C_Pentium_Dual-Core_T23xx.2B.2FExxxx.2C_Celeron_Dual-Core
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aceFruchtsaft
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PostPosted: Wed Aug 05, 2009 6:40 am    Post subject: Reply with quote
I've done the very same migration back when gcc started supporting -march=core2 and had no problems, IIRC.
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mikegpitt
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PostPosted: Wed Aug 05, 2009 2:21 pm    Post subject: Reply with quote
aceFruchtsaft wrote:
I've done the very same migration back when gcc started supporting -march=core2 and had no problems, IIRC.
Ok thanks for the input. I guess I'll take the dive in :)

Other comments/experiences welcomed...
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