Author: Daniel Mehrmannn
Date: 04:02:41 12/20/05
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On December 19, 2005 at 16:00:07, Tord Romstad wrote: >On December 19, 2005 at 14:58:12, Andreas Guettinger wrote: > >>On December 19, 2005 at 11:36:50, Tord Romstad wrote: >> >>>Which compiler flags do you use? I add "-mcpu=G5 -mpowerpc64" >>>to the compiler flags when compiling a G5 optimised Glaurung >>>executable. >> >>Additional flags would be "-mtune=G5" and "-fast" which turns on some PowerPc >>specific optimizations. > >I was about to say that "-mtune" was a deprecated synonym for >"-mcpu", but just before posting I checked, and found to my >surprise that the opposite is true. In other words, "-mcpu=G5" >and "-mtune=G5" should have exactly the same effect, but it >is probably better to get used to using "-mtune". > >I don't use "-fast", because it enforces "-O3", which is slower >than "-O2" for my program (as well as most other programs I >have tried). > >Tord Hi Tord, i'm used your settings: "-mcpu=G5 -mpowerpc64" but with -O3. I will create a new version with -O2 -mtune=G5 and -mpowerpc64. I giving an information here if its ready. I rewrote some parts for the speedup of Windows x64. Such parts are currently disabled if gcc used because i'm not sure if they are correct working. Best, Daniel
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