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brian@××××××××××××.com wrote: |
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> Are any of these uncommon or dangerous: |
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> |
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> CFLAGS="-O2 -march=opteron -ffast-math -fomit-frame-pointer -mfpmath=sse -funit- |
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> at-a-time -fpeel-loops -ftracer -funswitch-loops -pipe" |
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I don't recommend -ffast-math on a global basis (or at all), it gets you |
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right where the Pentium fdiv bug brought us some years ago: floating |
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point operations will be faster, but they could get a wrong result in |
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some occasions... |
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