On Tuesday 26 Jul 2011 20:02:05 Paul Hartman wrote:
> On Tue, Jul 26, 2011 at 3:36 PM, Alokat <mailing@alokat.org> wrote:
> > I'm wondering what kind of cpu-type I should use?
> 
> Hi,
> 
> I think, in your case, core2 is the correct one.
> 
> If you run this command:
> gcc -Q --help=target  -march=native
> 
> gcc will tell you what it thinks are the best options for your CPU.

Thanks for this - I better make a note of it!  ;-)

Does this mean that I did not need to have all these flags specified, because 
they're already included?

CFLAGS="-march=core2 -msse4 -mcx16 -msahf -O2 -pipe"

-msse4 -mcx16 -msahf seem to be already enabled:
====================================================
$ gcc -Q --help=target  -march=native
The following options are target specific:
  -m128bit-long-double        		[disabled]
  -m32                        		[disabled]
  -m3dnow                     		[disabled]
  -m3dnowa                    		[disabled]
  -m64                        		[enabled]
  -m80387                     		[enabled]
  -m96bit-long-double         		[enabled]
  -mabm                       		[disabled]
  -maccumulate-outgoing-args  		[disabled]
  -maes                       		[disabled]
  -malign-double              		[disabled]
  -malign-functions=          		
  -malign-jumps=              		
  -malign-loops=              		
  -malign-stringops           		[enabled]
  -march=                     		core2
  -masm=                      		
  -mavx                       		[disabled]
  -mbranch-cost=              		
  -mcld                       		[disabled]
  -mcmodel=                   		
  -mcx16                      		[enabled]
  -mfancy-math-387            		[enabled]
  -mfma                       		[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=     		
  -mmmx                       		[disabled]
  -mms-bitfields              		[disabled]
  -mno-align-stringops        		[disabled]
  -mno-fancy-math-387         		[disabled]
  -mno-fused-madd             		[disabled]
  -mno-push-args              		[disabled]
  -mno-red-zone               		[disabled]
  -mno-sse4                   		[disabled]
  -momit-leaf-frame-pointer   		[disabled]
  -mpc                        		
  -mpclmul                    		[disabled]
  -mpopcnt                    		[enabled]
  -mpreferred-stack-boundary= 		
  -mpush-args                 		[enabled]
  -mrecip                     		[disabled]
  -mred-zone                  		[enabled]
  -mregparm=                  		
  -mrtd                       		[disabled]
  -msahf                      		[enabled]
  -msoft-float                		[disabled]
  -msse                       		[enabled]
  -msse2                      		[enabled]
  -msse2avx                   		[disabled]
  -msse3                      		[enabled]
  -msse4                      		[enabled]
  -msse4.1                    		[enabled]
  -msse4.2                    		[enabled]
  -msse4a                     		[disabled]
  -msse5                      		[disabled]
  -msseregparm                		[disabled]
  -mssse3                     		[enabled]
  -mstack-arg-probe           		[disabled]
  -mstackrealign              		[enabled]
  -mstringop-strategy=        		
  -mtls-dialect=              		
  -mtls-direct-seg-refs       		[enabled]
  -mtune=                     		core2
  -muclibc                    		[disabled]
  -mveclibabi=                		
====================================================
-- 
Regards,
Mick