------- Comment #15 from mikpe at it dot uu dot se  2010-07-28 23:31 -------
Richard's proposed fix appears to need the PR44284 fix to avoid regressing
vect-20.c, much like PR44828 also needed PR44284 to not regress vectorization
tests.  Current 4.5 has PR44284 backported, so the PR45034 fix works there.
I did a preliminary backport of the first PR44284 fix to 4.4, and that solved
the vect-20.c regression but caused a couple of regressions of its own.  I'll
try backporting the followup fixes too, but I suspect the rational conclusion
will be to not backport the PR45034 fix, or to backport it with an adjustment
to vect-20.c to expect the reduced vectorization.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45034

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