https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106922
Richard Biener <rguenth at gcc dot gnu.org> changed:
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Attachment #53597|0 |1
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 53599
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53599&action=edit
candidate patch 2
OK, so I think I know what's going wrong eventually. The following implements
the trick differently. We might eventually be able to use dominance of the
virtual operands to check for the cross-iteration case as further improvement.
