[Bug tree-optimization/27299] [4.1 Regression] vectorizer generates aligned accesses to unaligned memory

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2006-04-25 11:55 -------
mainline doesn't do vectorization here:

/tmp/t.c:12: note: === vect_analyze_dependences ===
/tmp/t.c:12: note: not vectorized: can't determine dependence between *src.1_24
and *dest.0_23
/tmp/t.c:12: note: bad data dependence. 

while 4.1 peels for alignment (wrongly).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27299