compiler optimization? something else?

David Edelsohn dje at watson.ibm.com
Fri Mar 10 03:04:56 EST 2000


>>>>> Franz Sirl writes:

Franz> -O2, -O3, -funroll-loops, -funroll-all-loops, -ffast-math (dunno if this
Franz> one has an effect on PPC at all), -finline-functions, -mcpu=604, -mcpu=750

	-ffast-math does enable use of the FP "fsel" instruction for
conditional moves.  -ffast-math also affects other floating-point
optimizations in the compiler, not just specific architecture features.

David

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