[Bug tree-optimization/18557] Inefficient code generated by -ftree-vectorize on Alpha

[falk at debian dot org]

------- Additional Comments From falk at debian dot org  2004-11-19 11:29 -------
(In reply to comment #3)
> Can we get some numbers to understand how worse we are behaving?

The code size is inflated by a factor of about 3. Run time difference depends
a lot on how many bytes are actually copied, how predictable the branches are
etc. If I just run the test case on always the same data, which is about the 
best possible case, the vectorized code is 5% slower than f2.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18557