[Bug tree-optimization/28643] redundant phi-node in latch-block prevents vectorization

Daniel Berlin dberlin@dberlin.org
Tue Aug 8 06:14:00 GMT 2006


pinskia at gcc dot gnu dot org wrote:
> ------- Comment #1 from pinskia at gcc dot gnu dot org  2006-08-08 01:47 -------
> SSA copy prop with dce after that should really be the correct way.
> 

Err, SSA copy prop should be enough, actually, since after copy-prop,
the phi will have no users (and they shouldn't care about code with no
uses that doesn't access memory).

Though it's interesting that this redundant phi survives so long. What
is creating it?



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