[Bug middle-end/31723] Use reciprocal and reciprocal square root with -ffast-math

[burnus at gcc dot gnu dot org]

------- Comment #1 from burnus at gcc dot gnu dot org  2007-04-27 10:16 -------
Comment by Richard Guenther in the same thread:
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I think that even with -ffast-math 12 bits accuracy is not ok.  There is
the possibility of doing another newton iteration step to improve
accuracy, that would be ok for -ffast-math.  We can, though, add an
extra flag -msserecip or however you'd call it to enable use of the
instructions with less accuracy.


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burnus at gcc dot gnu dot org changed:

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31723