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graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,597

Website

Atom users - identify gcc options of your chips please

I am trying to understand the scope of recent changes in gcc.  If you have gcc installed on your Atom-based Arch box, please post a few things for me:

grep -m 1 -i atom /proc/cpuinfo
gcc -c -Q -march=native --help=target | grep -i 'march=\|mtune='

On my ancient Atom 330:

% grep -m 1 -i atom /proc/cpuinfo
model name	: Intel(R) Atom(TM) CPU  330   @ 1.60GHz

% gcc -c -Q -march=native --help=target | grep -i 'march=\|mtune='
  -march=                     		bonnell
  -mtune=                     		bonnell

Thank you!

Last edited by graysky (2014-06-07 19:58:00)

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CPU-optimized Linux-ck packages @ Repo-ck  • AUR packages • Zsh and other configs

2ManyDogs

Forum Fellow

Registered: 2012-01-15

Posts: 4,645

Re: Atom users - identify gcc options of your chips please

$ grep -m 1 -i atom /proc/cpuinfo
model name      : Intel(R) Atom(TM) CPU D410   @ 1.66GHz

$ gcc -c -Q -march=native --help=target | grep -i 'march=\|mtune='
  -march=                               bonnell
  -mtune=                               bonnell

Last edited by 2ManyDogs (2014-06-07 20:05:29)

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,597

Website

Re: Atom users - identify gcc options of your chips please

Thank you 2md.  This is interesting because the mainline kernel code is calling the deprecated -march=atom optons... I believe gcc will just ignore and default to generic.

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CPU-optimized Linux-ck packages @ Repo-ck  • AUR packages • Zsh and other configs

aesiris

Member

Registered: 2012-02-25

Posts: 97

Re: Atom users - identify gcc options of your chips please

same here with

$ grep -m 1 -i atom /proc/cpuinfo
model name      : Intel(R) Atom(TM) CPU N450   @ 1.66GHz
$ gcc -c -Q -march=native --help=target | grep -i 'march=\|mtune='
  -march=                               bonnell
  -mtune=                               bonnell

Name Taken

Banned

Registered: 2014-04-09

Posts: 113

Re: Atom users - identify gcc options of your chips please

..[root@arch] - [~] - [Sat Jun 07, 06:08]
..[$] <()> grep -m 1 -i atom /proc/cpuinfo
model name	: Intel(R) Atom(TM) CPU N450   @ 1.66GHz
..[root@arch] - [~] - [Sat Jun 07, 06:08]
..[$] <()> gcc -c -Q -march=native --help=target | grep -i 'march=\|mtune='
  -march=                     		bonnell
  -mtune=                     		bonnell

johane

Member

From: Dalarna - Sweden

Registered: 2010-02-05

Posts: 42

Website

Re: Atom users - identify gcc options of your chips please

$ grep -m 1 -i atom /proc/cpuinfo
model name      : Intel(R) Atom(TM) CPU D525   @ 1.80GHz

$ gcc -c -Q -march=native --help=target | grep -i 'march=\|mtune='
  -march=                               bonnell
  -mtune=                               bonnell

Last edited by johane (2014-06-08 21:51:03)