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[Bug middle-end/36099] [4.4 Regression] early loop unrolling pass prevents vectorization, SLP doesn't do its job
- From: "irar at il dot ibm dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 May 2008 05:54:09 -0000
- Subject: [Bug middle-end/36099] [4.4 Regression] early loop unrolling pass prevents vectorization, SLP doesn't do its job
- References: <bug-36099-12313@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #3 from irar at il dot ibm dot com 2008-05-04 05:54 -------
(In reply to comment #1)
>
> SLP also doesn't handle vectorization of register operations but needs
> memory source and destination operands(?).
Right.
> Likewise SLP shouldn't be
> confused by unvectorizable data types?
SLP does get confused by unvectorizable data types.
Ira
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36099