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[Bug tree-optimization/18438] vectorizer failed for vector matrix multiplication
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 27 Mar 2013 11:27:31 +0000
- Subject: [Bug tree-optimization/18438] vectorizer failed for vector matrix multiplication
- Auto-submitted: auto-generated
- References: <bug-18438-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18438
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-27 11:27:31 UTC ---
The issue is that we cannot use a vector v4sf store to &opoints[i][0]
as opoints[i][4] is not stored to. Such "masked" store (or "interleaved
store with gaps") is not supported by SLP.