[Bug tree-optimization/34223] missed optimization - complete unrolling pass before the vectorizer

[eres at il dot ibm dot com]

------- Comment #3 from eres at il dot ibm dot com  2007-11-25 14:13 -------
(In reply to comment #2)
> Why is this a shift not supported:
> not vectorized: relevant stmt not supported: D.1652_13 = j_29 << 3
> Is j_29*8 supported (i.e. if you hack this expression to turn it into a
> MULT_EXPR), does the vectorizer work then??

Still the division is not supported... (on altivec).  the thing is that
complete unrolling and ccp can help in such cases.

c.c:12: note: not vectorized: relevant stmt not supported: D.1653_14 =
D.1652_13 / 10


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34223