Hi all,
before I build all the programms from gentoo stage1, I want to get the
optimized CFLAG. I've read the article at
http://www.geocities.com/robm351/lifebook/ and get the CFLAGS below:
gcc 3.x
-O3 -march=i686 -pipe
-fomit-frame-pointer
-mpreferred-stack-boundary=2
-falign-functions=0 -falign-jumps=0
-falign-loops=0
But maybe someone here have used acovea before, here's the result after
9 hours "evlutionary algorithm":
optimistic options:
-foptimize-sibling-calls (1.035)
-fcse-skip-blocks (1.307)
-fexpensive-optimizations (1.307)
-fforce-mem (1.08)
-fschedule-insns (1.261)
-fsched-spec (1.216)
-finline-functions (2.077)
-mieee-fp (1.986)
-malign-double (1.714)
-funsafe-math-optimizations (2.439)
pessimistic options:
-fno-loop-optimize (-1.003)
-fschedule-insns2 (-1.093)
-fregmove (-1.32)
-ffloat-store (-2.09)
-fno-inline (-2.09)
-fnew-ra (-2.09)
-funroll-all-loops (-1.139)
-mfpmath=387 (-1.456)
-mfpmath=sse (-1.501)
-fomit-frame-pointer (-1.275)
I had to use gcc33_pentium3.acovea, because the others all failed. And I
cannot find any acovea file for crusoe.
Any idea here, what CFLAGS should be used?
thank you and merry chrismas ;-)
xue
Received on Wed Dec 22 2004 - 04:58:27 EST
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