GCC 4.1: Buildable on GHz machines only?

Mike Stump mrs@apple.com
Tue May 3 08:15:00 GMT 2005


On Apr 29, 2005, at 7:41 AM, Daniel Jacobowitz wrote:
> On Fri, Apr 29, 2005 at 12:49:37PM +0200, Lars Segerlund wrote:
>>  If we do a reasonable comparison of compile times against the  
>> intel compiler or
>>  the portland group or something similar we consistenly find that  
>> gcc is slower
>>  by a couple of times 1x - 3x, ( this is only my impression, not  
>> backed up by
>>  hard data but should be in the ballpark ).
>>
>
> Please don't add additional speculation to this already messy subject.
> Feel free to come back with data.

Finder_FE_v3 on 1GHz G4 PowerBook, 512MB RAM:

10.4 Tiger 8A428 using gcc4.0 (build results window closed), PCH,  
native target, debug on, no optimization, indexing off.
            full build: 574 seconds = 2.25 WarMarks

10.3.4 with Metroworks Code Warrior 9.0 with debug on, no optimization
            full build: 255 seconds

but please, don't let our data get in the way...  mind you, this is  
better than 36x slower, which is where it used to be, but, still  
horrible.  To get a feel for it, drive 30 on the freeway in the fast  
lane.  :-)

For source, try QT, we believe it is representative.



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